Updated Math package with upstream and formatted code

worldedit-core/src/main/java/com/sk89q/worldedit/math/BitMath.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;

worldedit-core/src/main/java/com/sk89q/worldedit/math/BlockVector2.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;
@@ -37,8 +37,10 @@ public class BlockVector2 {
      * A comparator for BlockVector2ds that orders the vectors by rows, with x as the
      * column and z as the row.
      *
+     * <p>
      * For example, if x is the horizontal axis and z is the vertical axis, it
      * sorts like so:
+     * </p>
      *
      * <pre>
      * 0123
@@ -67,14 +69,18 @@ public class BlockVector2 {
                     return ONE;
                 }
                 break;
+            default:
+                break;
         }
         */
         return new BlockVector2(x, z);
     }
 
-    protected int x, z;
+    protected int x;
+    protected int z;
 
-    protected BlockVector2(){}
+    protected BlockVector2(){
+    }
 
     /**
      * Construct an instance.
@@ -221,7 +227,8 @@ public class BlockVector2 {
      * @return a new vector
      */
     public BlockVector2 add(BlockVector2... others) {
-        int newX = x, newZ = z;
+        int newX = x;
+        int newZ = z;
 
         for (BlockVector2 other : others) {
             newX += other.x;
@@ -262,7 +269,8 @@ public class BlockVector2 {
      * @return a new vector
      */
     public BlockVector2 subtract(BlockVector2... others) {
-        int newX = x, newZ = z;
+        int newX = x;
+        int newZ = z;
 
         for (BlockVector2 other : others) {
             newX -= other.x;
@@ -300,7 +308,8 @@ public class BlockVector2 {
      * @return a new vector
      */
     public BlockVector2 multiply(BlockVector2... others) {
-        int newX = x, newZ = z;
+        int newX = x;
+        int newZ = z;
 
         for (BlockVector2 other : others) {
             newX *= other.x;
@@ -371,6 +380,7 @@ public class BlockVector2 {
     public BlockVector2 shr(int n) {
         return shr(n, n);
     }
+
     /**
      * Get the length of the vector.
      *
@@ -520,8 +530,8 @@ public class BlockVector2 {
      */
     public BlockVector2 getMinimum(BlockVector2 v2) {
         return new BlockVector2(
-                Math.min(x, v2.x),
+            Math.min(x, v2.x),
-                Math.min(z, v2.z)
+            Math.min(z, v2.z)
         );
     }
 
@@ -533,8 +543,8 @@ public class BlockVector2 {
      */
     public BlockVector2 getMaximum(BlockVector2 v2) {
         return new BlockVector2(
-                Math.max(x, v2.x),
+            Math.max(x, v2.x),
-                Math.max(z, v2.z)
+            Math.max(z, v2.z)
         );
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/math/BlockVector3.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;
@@ -67,6 +67,8 @@ public abstract class BlockVector3 {
                     return ONE;
                 }
                 break;
+            default:
+                break;
         }
         */
         return new BlockVector3Imp(x, y, z);
@@ -80,9 +82,9 @@ public abstract class BlockVector3 {
     }
 
     public static boolean isLongPackable(BlockVector3 location) {
-        return isHorizontallyInBounds(location.getX()) &&
+        return isHorizontallyInBounds(location.getX())
-            isHorizontallyInBounds(location.getZ()) &&
+            && isHorizontallyInBounds(location.getZ())
-            0 <= location.getY() && location.getY() <= WORLD_Y_MAX;
+            && 0 <= location.getY() && location.getY() <= WORLD_Y_MAX;
     }
 
     public static void checkLongPackable(BlockVector3 location) {
@@ -110,6 +112,7 @@ public abstract class BlockVector3 {
      *
      * <p>
      * Useful for sorting by chunk block storage order.
+     * </p>
      */
     public static Comparator<BlockVector3> sortByCoordsYzx() {
         return YzxOrderComparator.YZX_ORDER;
@@ -125,7 +128,7 @@ public abstract class BlockVector3 {
 
     public long toLongPackedForm() {
         checkLongPackable(this);
-        return (getX() & BITS_26) | ((getZ() & BITS_26) << 26) | (((getY() & (long) BITS_12) << (26 + 26)));
+        return (getX() & BITS_26) | ((getZ() & BITS_26) << 26) | (((getY() & BITS_12) << (26 + 26)));
     }
 
     public MutableBlockVector3 mutX(double x) {
@@ -264,7 +267,9 @@ public abstract class BlockVector3 {
      * @return a new vector
      */
     public BlockVector3 add(BlockVector3... others) {
-        int newX = getX(), newY = getY(), newZ = getZ();
+        int newX = getX();
+        int newY = getY();
+        int newZ = getZ();
 
         for (BlockVector3 other : others) {
             newX += other.getX();
@@ -307,7 +312,9 @@ public abstract class BlockVector3 {
      * @return a new vector
      */
     public BlockVector3 subtract(BlockVector3... others) {
-        int newX = getX(), newY = getY(), newZ = getZ();
+        int newX = getX();
+        int newY = getY();
+        int newZ = getZ();
 
         for (BlockVector3 other : others) {
             newX -= other.getX();
@@ -347,7 +354,9 @@ public abstract class BlockVector3 {
      * @return a new vector
      */
     public BlockVector3 multiply(BlockVector3... others) {
-        int newX = getX(), newY = getY(), newZ = getZ();
+        int newX = getX();
+        int newY = getY();
+        int newZ = getZ();
 
         for (BlockVector3 other : others) {
             newX *= other.getX();
@@ -766,8 +775,7 @@ public abstract class BlockVector3 {
     }
 
     public final boolean equals(BlockVector3 other) {
-        return other.getX() == this.getX() && other.getY() == this.getY() && other.getZ() == this
+        return other.getX() == this.getX() && other.getY() == this.getY() && other.getZ() == this.getZ();
-            .getZ();
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/math/BlockVector3Imp.java

@@ -38,7 +38,9 @@ public final class BlockVector3Imp extends BlockVector3 {
         return new BlockVector3Imp(x, y, z);
     }
 
-    private final int x, y, z;
+    private final int x;
+    private final int y;
+    private final int z;
 
     /**
      * Construct an instance.

worldedit-core/src/main/java/com/sk89q/worldedit/math/MathUtils.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;
@@ -63,14 +63,16 @@ public final class MathUtils {
                 dInt += 360;
             }
             switch (dInt) {
-            case 0:
+                case 0:
-                return 1.0;
+                    return 1.0;
-            case 90:
+                case 90:
-                return 0.0;
+                    return 0.0;
-            case 180:
+                case 180:
-                return -1.0;
+                    return -1.0;
-            case 270:
+                case 270:
-                return 0.0;
+                    return 0.0;
+                default:
+                    break;
             }
         }
         return Math.cos(Math.toRadians(degrees));
@@ -92,14 +94,16 @@ public final class MathUtils {
                 dInt += 360;
             }
             switch (dInt) {
-            case 0:
+                case 0:
-                return 0.0;
+                    return 0.0;
-            case 90:
+                case 90:
-                return 1.0;
+                    return 1.0;
-            case 180:
+                case 180:
-                return 0.0;
+                    return 0.0;
-            case 270:
+                case 270:
-                return -1.0;
+                    return -1.0;
+                default:
+                    break;
             }
         }
         return Math.sin(Math.toRadians(degrees));
@@ -109,7 +113,9 @@ public final class MathUtils {
      * Returns the rounded double of the given value, rounding to the
      * nearest integer value away from zero on ties.
      *
+     * <p>
      * This behavior is the same as {@link java.math.RoundingMode#HALF_UP}.
+     * </p>
      *
      * @param value the value
      * @return the rounded value

worldedit-core/src/main/java/com/sk89q/worldedit/math/MutableBlockVector2.java

@@ -8,7 +8,8 @@ public class MutableBlockVector2 extends BlockVector2 {
         return MUTABLE_CACHE.get().setComponents(x, z);
     }
 
-    public MutableBlockVector2() {}
+    public MutableBlockVector2() {
+    }
 
     public MutableBlockVector2(int x, int z) {
         super(x, z);

worldedit-core/src/main/java/com/sk89q/worldedit/math/MutableBlockVector3.java

@@ -16,7 +16,8 @@ public class MutableBlockVector3 extends BlockVector3 {
         return FaweCache.IMP.MUTABLE_BLOCKVECTOR3.get().setComponents(x, y, z);
     }
 
-    public MutableBlockVector3() {}
+    public MutableBlockVector3() {
+    }
 
     public MutableBlockVector3(BlockVector3 other) {
         this(other.getX(), other.getY(), other.getZ());
@@ -26,7 +27,9 @@ public class MutableBlockVector3 extends BlockVector3 {
         return setComponents(other.getBlockX(), other.getBlockY(), other.getBlockZ());
     }
 
-    private int x,y,z;
+    private int x;
+    private int y;
+    private int z;
 
     public MutableBlockVector3(int x, int y, int z) {
         this.x = x;

worldedit-core/src/main/java/com/sk89q/worldedit/math/MutableVector3.java

@@ -4,7 +4,9 @@ import com.boydti.fawe.FaweCache;
 
 public class MutableVector3 extends Vector3 {
 
-    private double x, y, z;
+    private double x;
+    private double y;
+    private double z;
 
     public MutableVector3() {
     }

worldedit-core/src/main/java/com/sk89q/worldedit/math/RegionOptimizedChunkComparator.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;

worldedit-core/src/main/java/com/sk89q/worldedit/math/RegionOptimizedComparator.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;

worldedit-core/src/main/java/com/sk89q/worldedit/math/Vector2.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;
@@ -44,11 +44,14 @@ public final class Vector2 {
                     return ONE;
                 }
                 break;
+            default:
+                break;
         }
         return new Vector2(x, z);
     }
 
-    private final double x, z;
+    private final double x;
+    private final double z;
 
     /**
      * Construct an instance.
@@ -128,7 +131,8 @@ public final class Vector2 {
      * @return a new vector
      */
     public Vector2 add(Vector2... others) {
-        double newX = x, newZ = z;
+        double newX = x;
+        double newZ = z;
 
         for (Vector2 other : others) {
             newX += other.x;
@@ -169,7 +173,8 @@ public final class Vector2 {
      * @return a new vector
      */
     public Vector2 subtract(Vector2... others) {
-        double newX = x, newZ = z;
+        double newX = x;
+        double newZ = z;
 
         for (Vector2 other : others) {
             newX -= other.x;
@@ -207,7 +212,8 @@ public final class Vector2 {
      * @return a new vector
      */
     public Vector2 multiply(Vector2... others) {
-        double newX = x, newZ = z;
+        double newX = x;
+        double newZ = z;
 
         for (Vector2 other : others) {
             newX *= other.x;

worldedit-core/src/main/java/com/sk89q/worldedit/math/Vector3.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math;
@@ -54,6 +54,8 @@ public abstract class Vector3 {
                     return ONE;
                 }
                 break;
+            default:
+                break;
         }
         */
         return new Vector3Impl(x, y, z);
@@ -75,6 +77,7 @@ public abstract class Vector3 {
      *
      * <p>
      * Useful for sorting by chunk block storage order.
+     * </p>
      */
     public static Comparator<Vector3> sortByCoordsYzx() {
         return YzxOrderComparator.YZX_ORDER;
@@ -209,7 +212,9 @@ public abstract class Vector3 {
      * @return a new vector
      */
     public Vector3 add(Vector3... others) {
-        double newX = getX(), newY = getY(), newZ = getZ();
+        double newX = getX();
+        double newY = getY();
+        double newZ = getZ();
 
         for (Vector3 other : others) {
             newX += other.getX();
@@ -252,7 +257,9 @@ public abstract class Vector3 {
      * @return a new vector
      */
     public Vector3 subtract(Vector3... others) {
-        double newX = getX(), newY = getY(), newZ = getZ();
+        double newX = getX();
+        double newY = getY();
+        double newZ = getZ();
 
         for (Vector3 other : others) {
             newX -= other.getX();
@@ -292,7 +299,9 @@ public abstract class Vector3 {
      * @return a new vector
      */
     public Vector3 multiply(Vector3... others) {
-        double newX = getX(), newY = getY(), newZ = getZ();
+        double newX = getX();
+        double newY = getY();
+        double newZ = getZ();
 
         for (Vector3 other : others) {
             newX *= other.getX();

worldedit-core/src/main/java/com/sk89q/worldedit/math/Vector3Impl.java

@@ -1,7 +1,9 @@
 package com.sk89q.worldedit.math;
 
 public class Vector3Impl extends Vector3 {
-    private final double x,y,z;
+    private final double x;
+    private final double y;
+    private final double z;
 
     public Vector3Impl(double x, double y, double z) {
         this.x = x;

worldedit-core/src/main/java/com/sk89q/worldedit/math/convolution/GaussianKernel.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.convolution;
@@ -25,7 +25,7 @@ package com.sk89q.worldedit.math.convolution;
 public class GaussianKernel extends Kernel {
 
     /**
-     * Constructor of the kernel
+     * Constructor of the kernel.
      *
      * @param radius the resulting diameter will be radius * 2 + 1
      * @param sigma controls 'flatness'

worldedit-core/src/main/java/com/sk89q/worldedit/math/convolution/HeightMap.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.convolution;
@@ -46,14 +46,14 @@ public class HeightMap {
     private final boolean layers;
     private int[] data;
     private boolean[] invalid;
-    private int width;
+    private final int width;
-    private int height;
+    private final int height;
 
-    private Region region;
+    private final Region region;
-    private EditSession session;
+    private final EditSession session;
 
     /**
-     * Constructs the HeightMap
+     * Constructs the HeightMap.
      *
      * @param session an edit session
      * @param region the region
@@ -106,10 +106,11 @@ public class HeightMap {
             int yTmp = 255;
             for (int z = 0; z < height; ++z) {
                 for (int x = 0; x < width; ++x, index++) {
-                    if (mask != null)
+                    if (mask != null) {
                         yTmp = session.getNearestSurfaceTerrainBlock(x + minX, z + minZ, yTmp, minY, maxY, Integer.MIN_VALUE, Integer.MAX_VALUE, mask);
-                    else
+                    } else {
                         yTmp = session.getNearestSurfaceTerrainBlock(x + minX, z + minZ, yTmp, minY, maxY, Integer.MIN_VALUE, Integer.MAX_VALUE);
+                    }
                     switch (yTmp) {
                         case Integer.MIN_VALUE:
                             yTmp = minY;
@@ -145,8 +146,8 @@ public class HeightMap {
      * @param filter the filter
      * @param iterations the number of iterations
      * @return number of blocks affected
+     * @throws MaxChangedBlocksException if the maximum block change limit is exceeded
      */
-
     public int applyFilter(HeightMapFilter filter, int iterations) throws MaxChangedBlocksException {
         checkNotNull(filter);
 
@@ -182,7 +183,9 @@ public class HeightMap {
         for (int z = 0; z < height; ++z) {
             int zr = z + originZ;
             for (int x = 0; x < width; ++x) {
-                if (this.invalid != null && this.invalid[index]) continue;
+                if (this.invalid != null && this.invalid[index]) {
+                    continue;
+                }
                 int curHeight = this.data[index];
 
                 //Clamp newHeight within the selection area
@@ -204,7 +207,9 @@ public class HeightMap {
                         // Grow -- start from 1 below top replacing airblocks
                         for (int setY = newBlock - 1, getY = curBlock; setY >= curBlock; --setY, getY--) {
                             BlockStateHolder<BlockState> get = session.getBlock(xr, getY, zr);
-                            if (get != BlockTypes.AIR.getDefaultState()) tmpBlock = get;
+                            if (get != BlockTypes.AIR.getDefaultState()) {
+                                tmpBlock = get;
+                            }
                             session.setBlock(xr, setY, zr, tmpBlock);
                             ++blocksChanged;
                         }
@@ -244,17 +249,18 @@ public class HeightMap {
     }
 
     /**
-     * Apply a raw heightmap to the region
+     * Apply a raw heightmap to the region.
      *
      * @param data the data
      * @return number of blocks affected
+     * @throws MaxChangedBlocksException if the maximum block change limit is exceeded
      */
-
     public int apply(int[] data) throws MaxChangedBlocksException {
         checkNotNull(data);
 
         BlockVector3 minY = region.getMinimumPoint();
         int originX = minY.getBlockX();
+        int originY = minY.getBlockY();
         int originZ = minY.getBlockZ();
 
         int maxY = region.getMaximumPoint().getBlockY();
@@ -268,7 +274,9 @@ public class HeightMap {
         for (int z = 0; z < height; ++z) {
             int zr = z + originZ;
             for (int x = 0; x < width; ++x, index++) {
-                if (this.invalid != null && this.invalid[index]) continue;
+                if (this.invalid != null && this.invalid[index]) {
+                    continue;
+                }
 
                 int curHeight = this.data[index];
 
@@ -293,7 +301,9 @@ public class HeightMap {
                             } else {
                                 get = BlockTypes.AIR.getDefaultState();
                             }
-                            if (get != BlockTypes.AIR.getDefaultState()) tmpBlock = get;
+                            if (get != BlockTypes.AIR.getDefaultState()) {
+                                tmpBlock = get;
+                            }
                             session.setBlock(xr, setY, zr, tmpBlock);
                             ++blocksChanged;
                         }

worldedit-core/src/main/java/com/sk89q/worldedit/math/convolution/HeightMapFilter.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.convolution;
@@ -53,14 +53,14 @@ public class HeightMapFilter {
     }
 
     /**
-     * @return the kernel
+     * Get the kernel.
      */
     public Kernel getKernel() {
         return kernel;
     }
 
     /**
-     * Set Kernel
+     * Set the kernel.
      *
      * @param kernel the kernel
      */
@@ -71,7 +71,7 @@ public class HeightMapFilter {
     }
 
     /**
-     * Filter with a 2D kernel
+     * Filter with a 2D kernel.
      *
      * @param inData the data
      * @param width the width
@@ -107,7 +107,9 @@ public class HeightMapFilter {
                     int matrixOffset = ky * kw;
                     for (int kx = 0; kx < kw; ++kx) {
                         float f = matrix[matrixOffset + kx];
-                        if (f == 0) continue;
+                        if (f == 0) {
+                            continue;
+                        }
 
                         int offsetX = x + kx - kox;
                         // Clamp coordinates inside data

worldedit-core/src/main/java/com/sk89q/worldedit/math/convolution/Kernel.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.convolution;
@@ -27,11 +27,11 @@ package com.sk89q.worldedit.math.convolution;
  */
 public class Kernel {
 
-    private int width;
+    private final int width;
-    private int height;
+    private final int height;
-    private int xOrigin;
+    private final int xOrigin;
-    private int yOrigin;
+    private final int yOrigin;
-    private float[] data;
+    private final float[] data;
 
     public Kernel(int width, int height, float[] data) {
         this.width = width;

worldedit-core/src/main/java/com/sk89q/worldedit/math/convolution/LinearKernel.java

@@ -3,24 +3,26 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.convolution;
 
+import java.util.Arrays;
+
 /**
- * A linear Kernel generator (all cells weight the same)
+ * A linear Kernel generator (all cells weigh the same).
  */
 public class LinearKernel extends Kernel {
 
@@ -32,7 +34,7 @@ public class LinearKernel extends Kernel {
         int diameter = radius * 2 + 1;
         float[] data = new float[diameter * diameter];
 
-        for (int i = 0; i < data.length; data[i++] = 1.0f / data.length);
+        Arrays.fill(data, 1.0f / data.length);
 
         return data;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/math/geom/Polygons.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.geom;
@@ -31,7 +31,6 @@ import java.util.List;
 public final class Polygons {
 
     private Polygons() {
-        
     }
 
     /**
@@ -43,7 +42,7 @@ public final class Polygons {
      * @return a list of {@link BlockVector2} which resemble the shape as a polygon
      */
     public static List<BlockVector2> polygonizeCylinder(BlockVector2 center, Vector2 radius, int maxPoints) {
-        int nPoints = (int) Math.ceil(Math.PI*radius.length());
+        int nPoints = (int) Math.ceil(Math.PI * radius.length());
 
         // These strange semantics for maxPoints are copied from the selectSecondary method.
         if (maxPoints >= 0 && nPoints >= maxPoints) {

worldedit-core/src/main/java/com/sk89q/worldedit/math/interpolation/Interpolation.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 // $Id$
@@ -26,7 +26,7 @@ import com.sk89q.worldedit.math.Vector3;
 import java.util.List;
 
 /**
- * Represents an arbitrary function in &#8477; &rarr; &#8477;<sup>3</sup>
+ * Represents an arbitrary function in &#8477; &rarr; &#8477;<sup>3</sup>.
  */
 public interface Interpolation {
 
@@ -39,7 +39,7 @@ public interface Interpolation {
     void setNodes(List<Node> nodes);
 
     /**
-     * Gets the result of f(position)
+     * Gets the result of f(position).
      *
      * @param position the position to interpolate
      * @return the result

worldedit-core/src/main/java/com/sk89q/worldedit/math/interpolation/KochanekBartelsInterpolation.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 // $Id$
@@ -43,10 +43,10 @@ public class KochanekBartelsInterpolation implements Interpolation {
     private Vector3[] coeffC;
     private Vector3[] coeffD;
     private double scaling;
-    private MutableBlockVector3 mutable = new MutableBlockVector3();
+    private final MutableBlockVector3 mutable = new MutableBlockVector3();
 
     public KochanekBartelsInterpolation() {
-        setNodes(Collections.<Node>emptyList());
+        setNodes(Collections.emptyList());
     }
 
     @Override
@@ -64,8 +64,9 @@ public class KochanekBartelsInterpolation implements Interpolation {
         coeffC = new Vector3[nNodes];
         coeffD = new Vector3[nNodes];
 
-        if (nNodes == 0)
+        if (nNodes == 0) {
             return;
+        }
 
         Node nodeB = nodes.get(0);
         double tensionB = nodeB.getTension();
@@ -84,14 +85,14 @@ public class KochanekBartelsInterpolation implements Interpolation {
             }
 
             // Kochanek-Bartels tangent coefficients
-            final double ta = (1-tensionA)*(1+biasA)*(1+continuityA)/2; // Factor for lhs of d[i]
+            final double ta = (1 - tensionA) * (1 + biasA) * (1 + continuityA) / 2; // Factor for lhs of d[i]
-            final double tb = (1-tensionA)*(1-biasA)*(1-continuityA)/2; // Factor for rhs of d[i]
+            final double tb = (1 - tensionA) * (1 - biasA) * (1 - continuityA) / 2; // Factor for rhs of d[i]
-            final double tc = (1-tensionB)*(1+biasB)*(1-continuityB)/2; // Factor for lhs of d[i+1]
+            final double tc = (1 - tensionB) * (1 + biasB) * (1 - continuityB) / 2; // Factor for lhs of d[i+1]
-            final double td = (1-tensionB)*(1-biasB)*(1+continuityB)/2; // Factor for rhs of d[i+1]
+            final double td = (1 - tensionB) * (1 - biasB) * (1 + continuityB) / 2; // Factor for rhs of d[i+1]
 
-            coeffA[i] = linearCombination(i,  -ta,    ta-  tb-tc+2,    tb+tc-td-2,  td);
+            coeffA[i] = linearCombination(i, -ta, ta - tb - tc + 2, tb + tc - td - 2, td);
-            coeffB[i] = linearCombination(i, 2*ta, -2*ta+2*tb+tc-3, -2*tb-tc+td+3, -td);
+            coeffB[i] = linearCombination(i, 2 * ta, -2 * ta + 2 * tb + tc - 3, -2 * tb - tc + td + 3, -td);
-            coeffC[i] = linearCombination(i,  -ta,    ta-  tb     ,    tb        ,   0);
+            coeffC[i] = linearCombination(i, -ta, ta - tb, tb, 0);
             //coeffD[i] = linearCombination(i,    0,               1,             0,   0);
             coeffD[i] = retrieve(i); // this is an optimization
         }
@@ -125,11 +126,13 @@ public class KochanekBartelsInterpolation implements Interpolation {
      * @return nodes[clamp(0, nodes.length-1)]
      */
     private Vector3 retrieve(int index) {
-        if (index < 0)
+        if (index < 0) {
             return fastRetrieve(0);
+        }
 
-        if (index >= nodes.size())
+        if (index >= nodes.size()) {
-            return fastRetrieve(nodes.size()-1);
+            return fastRetrieve(nodes.size() - 1);
+        }
 
         return fastRetrieve(index);
     }
@@ -140,11 +143,13 @@ public class KochanekBartelsInterpolation implements Interpolation {
 
     @Override
     public Vector3 getPosition(double position) {
-        if (coeffA == null)
+        if (coeffA == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (position > 1)
+        if (position > 1) {
             return null;
+        }
 
         position *= scaling;
 
@@ -166,11 +171,13 @@ public class KochanekBartelsInterpolation implements Interpolation {
 
     @Override
     public Vector3 get1stDerivative(double position) {
-        if (coeffA == null)
+        if (coeffA == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (position > 1)
+        if (position > 1) {
             return null;
+        }
 
         position *= scaling;
 
@@ -181,16 +188,18 @@ public class KochanekBartelsInterpolation implements Interpolation {
         final Vector3 b = coeffB[index];
         final Vector3 c = coeffC[index];
 
-        return a.multiply(1.5*position - 3.0*index).add(b).multiply(2.0*position).add(a.multiply(1.5*index).subtract(b).multiply(2.0*index)).add(c).multiply(scaling);
+        return a.multiply(1.5 * position - 3.0 * index).add(b).multiply(2.0 * position).add(a.multiply(1.5 * index).subtract(b).multiply(2.0 * index)).add(c).multiply(scaling);
     }
 
     @Override
     public double arcLength(double positionA, double positionB) {
-        if (coeffA == null)
+        if (coeffA == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (positionA > positionB)
+        if (positionA > positionB) {
             return arcLength(positionB, positionA);
+        }
 
         positionA *= scaling;
         positionB *= scaling;
@@ -205,23 +214,21 @@ public class KochanekBartelsInterpolation implements Interpolation {
     }
 
     /**
-     * Assumes a < b
+     * Assumes a < b.
      */
     private double arcLengthRecursive(int indexLeft, double remainderLeft, int indexRight, double remainderRight) {
         switch (indexRight - indexLeft) {
-        case 0:
+            case 0:
-            return arcLengthRecursive(indexLeft, remainderLeft, remainderRight);
+                return arcLengthRecursive(indexLeft, remainderLeft, remainderRight);
 
-        case 1:
+            case 1:
-            // This case is merely a speed-up for a very common case
+                // This case is merely a speed-up for a very common case
-            return
+                return arcLengthRecursive(indexLeft, remainderLeft, 1.0)
-                    arcLengthRecursive(indexLeft, remainderLeft, 1.0) +
+                    + arcLengthRecursive(indexRight, 0.0, remainderRight);
-                    arcLengthRecursive(indexRight, 0.0, remainderRight);
 
-        default:
+            default:
-            return
+                return arcLengthRecursive(indexLeft, remainderLeft, indexRight - 1, 1.0)
-                    arcLengthRecursive(indexLeft, remainderLeft, indexRight - 1, 1.0) +
+                    + arcLengthRecursive(indexRight, 0.0, remainderRight);
-                    arcLengthRecursive(indexRight, 0.0, remainderRight);
         }
     }
 
@@ -233,9 +240,9 @@ public class KochanekBartelsInterpolation implements Interpolation {
         final int nPoints = 8;
 
         double accum = a.multiply(remainderLeft).add(b).multiply(remainderLeft).add(c).length() / 2.0;
-        for (int i = 1; i < nPoints-1; ++i) {
+        for (int i = 1; i < nPoints - 1; ++i) {
             double t = ((double) i) / nPoints;
-            t = (remainderRight-remainderLeft)*t + remainderLeft;
+            t = (remainderRight - remainderLeft) * t + remainderLeft;
             accum += a.multiply(t).add(b).multiply(t).add(c).length();
         }
 
@@ -245,11 +252,13 @@ public class KochanekBartelsInterpolation implements Interpolation {
 
     @Override
     public int getSegment(double position) {
-        if (coeffA == null)
+        if (coeffA == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (position > 1)
+        if (position > 1) {
             return Integer.MAX_VALUE;
+        }
 
         position *= scaling;
 

worldedit-core/src/main/java/com/sk89q/worldedit/math/interpolation/LinearInterpolation.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 // $Id$
@@ -43,11 +43,13 @@ public class LinearInterpolation implements Interpolation {
 
     @Override
     public Vector3 getPosition(double position) {
-        if (nodes == null)
+        if (nodes == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (position > 1)
+        if (position > 1) {
             return null;
+        }
 
         position *= nodes.size() - 1;
 
@@ -77,11 +79,13 @@ public class LinearInterpolation implements Interpolation {
 
     @Override
     public Vector3 get1stDerivative(double position) {
-        if (nodes == null)
+        if (nodes == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (position > 1)
+        if (position > 1) {
             return null;
+        }
 
         position *= nodes.size() - 1;
 
@@ -95,11 +99,13 @@ public class LinearInterpolation implements Interpolation {
 
     @Override
     public double arcLength(double positionA, double positionB) {
-        if (nodes == null)
+        if (nodes == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (positionA > positionB)
+        if (positionA > positionB) {
             return arcLength(positionB, positionA);
+        }
 
         positionA *= nodes.size() - 1;
         positionB *= nodes.size() - 1;
@@ -118,19 +124,17 @@ public class LinearInterpolation implements Interpolation {
      */
     private double arcLengthRecursive(int indexA, double remainderA, int indexB, double remainderB) {
         switch (indexB - indexA) {
-        case 0:
+            case 0:
-            return arcLengthRecursive(indexA, remainderA, remainderB);
+                return arcLengthRecursive(indexA, remainderA, remainderB);
 
-        case 1:
+            case 1:
-            // This case is merely a speed-up for a very common case
+                // This case is merely a speed-up for a very common case
-            return
+                return arcLengthRecursive(indexA, remainderA, 1.0)
-                    arcLengthRecursive(indexA, remainderA, 1.0) +
+                    + arcLengthRecursive(indexB, 0.0, remainderB);
-                    arcLengthRecursive(indexB, 0.0, remainderB);
 
-        default:
+            default:
-            return
+                return arcLengthRecursive(indexA, remainderA, indexB - 1, 1.0)
-                    arcLengthRecursive(indexA, remainderA, indexB - 1, 1.0) +
+                    + arcLengthRecursive(indexB, 0.0, remainderB);
-                    arcLengthRecursive(indexB, 0.0, remainderB);
         }
     }
 
@@ -143,11 +147,13 @@ public class LinearInterpolation implements Interpolation {
 
     @Override
     public int getSegment(double position) {
-        if (nodes == null)
+        if (nodes == null) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (position > 1)
+        if (position > 1) {
             return Integer.MAX_VALUE;
+        }
 
         position *= nodes.size() - 1;
 

worldedit-core/src/main/java/com/sk89q/worldedit/math/interpolation/Node.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 // $Id$

worldedit-core/src/main/java/com/sk89q/worldedit/math/interpolation/ReparametrisingInterpolation.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 // $Id$
@@ -67,16 +67,18 @@ public class ReparametrisingInterpolation implements Interpolation {
 
     @Override
     public Vector3 getPosition(double position) {
-        if (position > 1)
+        if (position > 1) {
             return null;
+        }
 
         return baseInterpolation.getPosition(arcToParameter(position));
     }
 
     @Override
     public Vector3 get1stDerivative(double position) {
-        if (position > 1)
+        if (position > 1) {
             return null;
+        }
 
         return baseInterpolation.get1stDerivative(arcToParameter(position)).normalize().multiply(totalArcLength);
     }
@@ -87,10 +89,13 @@ public class ReparametrisingInterpolation implements Interpolation {
     }
 
     private double arcToParameter(double arc) {
-        if (cache.isEmpty())
+        if (cache.isEmpty()) {
             throw new IllegalStateException("Must call setNodes first.");
+        }
 
-        if (arc > 1) arc = 1;
+        if (arc > 1) {
+            arc = 1;
+        }
         arc *= totalArcLength;
 
         Entry<Double, Double> floorEntry = cache.floorEntry(arc);
@@ -140,8 +145,7 @@ public class ReparametrisingInterpolation implements Interpolation {
                 // search between left and mid
                 rightArc = midArc;
                 rightParameter = midParameter;
-            }
+            } else {
-            else {
                 // search between mid and right
                 leftArc = midArc;
                 leftParameter = midParameter;
@@ -152,8 +156,9 @@ public class ReparametrisingInterpolation implements Interpolation {
 
     @Override
     public int getSegment(double position) {
-        if (position > 1)
+        if (position > 1) {
             return Integer.MAX_VALUE;
+        }
 
         return baseInterpolation.getSegment(arcToParameter(position));
     }

worldedit-core/src/main/java/com/sk89q/worldedit/math/noise/JLibNoiseGenerator.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.noise;

worldedit-core/src/main/java/com/sk89q/worldedit/math/noise/NoiseGenerator.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.noise;

worldedit-core/src/main/java/com/sk89q/worldedit/math/noise/PerlinNoise.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.noise;

worldedit-core/src/main/java/com/sk89q/worldedit/math/noise/RandomNoise.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.noise;

worldedit-core/src/main/java/com/sk89q/worldedit/math/noise/RidgedMultiFractalNoise.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.noise;

worldedit-core/src/main/java/com/sk89q/worldedit/math/noise/VoronoiNoise.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.noise;

worldedit-core/src/main/java/com/sk89q/worldedit/math/transform/AffineTransform.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.transform;
@@ -34,15 +34,13 @@ import java.io.Serializable;
  */
 public class AffineTransform implements Transform, Serializable {
 
-    private AffineTransform inverse;
-
     /**
      * coefficients for x coordinate.
      */
     private final double m00;
     private final double m01;
     private final double m02;
-    private double m03;
+    private final double m03;
 
     /**
      * coefficients for y coordinate.
@@ -50,7 +48,7 @@ public class AffineTransform implements Transform, Serializable {
     private final double m10;
     private final double m11;
     private final double m12;
-    private double m13;
+    private final double m13;
 
     /**
      * coefficients for z coordinate.
@@ -58,13 +56,13 @@ public class AffineTransform implements Transform, Serializable {
     private final double m20;
     private final double m21;
     private final double m22;
-    private double m23;
+    private final double m23;
 
     // ===================================================================
     // constructors
 
     /**
-     * Creates a new affine transform3D set to identity.
+     * Creates a new affine transform3D set to the identity.
      */
     public AffineTransform() {
         // init to identity matrix
@@ -85,6 +83,7 @@ public class AffineTransform implements Transform, Serializable {
             m20 = coefs[6];
             m21 = coefs[7];
             m22 = coefs[8];
+            m03 = m13 = m23 = 0;
         } else if (coefs.length == 12) {
             m00 = coefs[0];
             m01 = coefs[1];
@@ -99,11 +98,14 @@ public class AffineTransform implements Transform, Serializable {
             m22 = coefs[10];
             m23 = coefs[11];
         } else {
-            throw new IllegalArgumentException("Input array must have 9 or 12 elements");
+            throw new IllegalArgumentException(
+                    "Input array must have 9 or 12 elements");
         }
     }
 
-    public AffineTransform(double xx, double yx, double zx, double tx, double xy, double yy, double zy, double ty, double xz, double yz, double zz, double tz) {
+    public AffineTransform(double xx, double yx, double zx, double tx,
+                           double xy, double yy, double zy, double ty, double xz, double yz,
+                           double zz, double tz) {
         m00 = xx;
         m01 = yx;
         m02 = zx;
@@ -123,40 +125,10 @@ public class AffineTransform implements Transform, Serializable {
 
     @Override
     public boolean isIdentity() {
-        if (m00 != 1) {
+        return m00 == m11 && m11 == m22 && m22 == 1
-            return false;
+            && m01 == m02 && m02 == m03 && m03 == 0
-        }
+            && m10 == m12 && m12 == m13 && m13 == 0
-        if (m11 != 1) {
+            && m20 == m21 && m21 == m23 && m23 == 0;
-            return false;
-        }
-        if (m22 != 1) {
-            return false;
-        }
-        if (m01 != 0) {
-            return false;
-        }
-        if (m02 != 0) {
-            return false;
-        }
-        if (m03 != 0) {
-            return false;
-        }
-        if (m10 != 0) {
-            return false;
-        }
-        if (m12 != 0) {
-            return false;
-        }
-        if (m13 != 0) {
-            return false;
-        }
-        if (m20 != 0) {
-            return false;
-        }
-        if (m21 != 0) {
-            return false;
-        }
-        return m23 == 0;
     }
 
     /**
@@ -164,20 +136,7 @@ public class AffineTransform implements Transform, Serializable {
      * 12 double.
      */
     public double[] coefficients() {
-        return new double[] {
+        return new double[]{m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23};
-            m00,
-            m01,
-            m02,
-            m03,
-            m10,
-            m11,
-            m12,
-            m13,
-            m20,
-            m21,
-            m22,
-            m23
-        };
     }
 
     public boolean isOffAxis() {
@@ -198,8 +157,8 @@ public class AffineTransform implements Transform, Serializable {
      * @return the determinant of the transform.
      */
     private double determinant() {
-        return m00 * (m11 * m22 - m12 * m21) - m01 * (m10 * m22 - m20 * m12) + m02 * (m10 * m21
+        return m00 * (m11 * m22 - m12 * m21) - m01 * (m10 * m22 - m20 * m12)
-            - m20 * m11);
+                + m02 * (m10 * m21 - m20 * m11);
     }
 
     /**
@@ -207,26 +166,23 @@ public class AffineTransform implements Transform, Serializable {
      */
     @Override
     public AffineTransform inverse() {
-        if (inverse != null) {
-            return inverse;
-        }
         double det = this.determinant();
         return new AffineTransform(
-            (m11 * m22 - m21 * m12) / det,
+                (m11 * m22 - m21 * m12) / det,
-            (m21 * m02 - m01 * m22) / det,
+                (m21 * m02 - m01 * m22) / det,
-            (m01 * m12 - m11 * m02) / det,
+                (m01 * m12 - m11 * m02) / det,
-            (m01 * (m22 * m13 - m12 * m23) + m02 * (m11 * m23 - m21 * m13) - m03 * (m11 * m22
+                (m01 * (m22 * m13 - m12 * m23) + m02 * (m11 * m23 - m21 * m13)
-                - m21 * m12)) / det,
+                        - m03 * (m11 * m22 - m21 * m12)) / det,
-            (m20 * m12 - m10 * m22) / det,
+                (m20 * m12 - m10 * m22) / det,
-            (m00 * m22 - m20 * m02) / det,
+                (m00 * m22 - m20 * m02) / det,
-            (m10 * m02 - m00 * m12) / det,
+                (m10 * m02 - m00 * m12) / det,
-            (m00 * (m12 * m23 - m22 * m13) - m02 * (m10 * m23 - m20 * m13) + m03 * (m10 * m22
+                (m00 * (m12 * m23 - m22 * m13) - m02 * (m10 * m23 - m20 * m13)
-                - m20 * m12)) / det,
+                        + m03 * (m10 * m22 - m20 * m12)) / det,
-            (m10 * m21 - m20 * m11) / det,
+                (m10 * m21 - m20 * m11) / det,
-            (m20 * m01 - m00 * m21) / det,
+                (m20 * m01 - m00 * m21) / det,
-            (m00 * m11 - m10 * m01) / det,
+                (m00 * m11 - m10 * m01) / det,
-            (m00 * (m21 * m13 - m11 * m23) + m01 * (m10 * m23 - m20 * m13) - m03 * (m10 * m21
+                (m00 * (m21 * m13 - m11 * m23) + m01 * (m10 * m23 - m20 * m13)
-                - m20 * m11)) / det);
+                        - m03 * (m10 * m21 - m20 * m11)) / det);
     }
 
     // ===================================================================
@@ -252,7 +208,10 @@ public class AffineTransform implements Transform, Serializable {
         double n21 = m20 * that.m01 + m21 * that.m11 + m22 * that.m21;
         double n22 = m20 * that.m02 + m21 * that.m12 + m22 * that.m22;
         double n23 = m20 * that.m03 + m21 * that.m13 + m22 * that.m23 + m23;
-        return new AffineTransform(n00, n01, n02, n03, n10, n11, n12, n13, n20, n21, n22, n23);
+        return new AffineTransform(
+                n00, n01, n02, n03,
+                n10, n11, n12, n13,
+                n20, n21, n22, n23);
     }
 
     /**
@@ -275,7 +234,10 @@ public class AffineTransform implements Transform, Serializable {
         double n21 = that.m20 * m01 + that.m21 * m11 + that.m22 * m21;
         double n22 = that.m20 * m02 + that.m21 * m12 + that.m22 * m22;
         double n23 = that.m20 * m03 + that.m21 * m13 + that.m22 * m23 + that.m23;
-        return new AffineTransform(n00, n01, n02, n03, n10, n11, n12, n13, n20, n21, n22, n23);
+        return new AffineTransform(
+                n00, n01, n02, n03,
+                n10, n11, n12, n13,
+                n20, n21, n22, n23);
     }
 
     public AffineTransform translate(Vector3 vec) {
@@ -293,19 +255,31 @@ public class AffineTransform implements Transform, Serializable {
     public AffineTransform rotateX(double theta) {
         double cot = MathUtils.dCos(theta);
         double sit = MathUtils.dSin(theta);
-        return concatenate(new AffineTransform(1, 0, 0, 0, 0, cot, -sit, 0, 0, sit, cot, 0));
+        return concatenate(
+                new AffineTransform(
+                        1, 0, 0, 0,
+                        0, cot, -sit, 0,
+                        0, sit, cot, 0));
     }
 
     public AffineTransform rotateY(double theta) {
         double cot = MathUtils.dCos(theta);
         double sit = MathUtils.dSin(theta);
-        return concatenate(new AffineTransform(cot, 0, sit, 0, 0, 1, 0, 0, -sit, 0, cot, 0));
+        return concatenate(
+                new AffineTransform(
+                        cot, 0, sit, 0,
+                        0, 1, 0, 0,
+                        -sit, 0, cot, 0));
     }
 
     public AffineTransform rotateZ(double theta) {
         double cot = MathUtils.dCos(theta);
         double sit = MathUtils.dSin(theta);
-        return concatenate(new AffineTransform(cot, -sit, 0, 0, sit, cot, 0, 0, 0, 0, 1, 0));
+        return concatenate(
+                new AffineTransform(
+                        cot, -sit, 0, 0,
+                        sit, cot, 0, 0,
+                        0, 0, 1, 0));
     }
 
     public AffineTransform scale(double s) {
@@ -361,13 +335,20 @@ public class AffineTransform implements Transform, Serializable {
     }
 
     /**
-     * Returns if this affine transform is representing a horizontal flip.
+     * Returns if this affine transform represents a horizontal flip.
      */
     public boolean isHorizontalFlip() {
         // use the determinant of the x-z submatrix to check if this is a horizontal flip
         return m00 * m22 - m02 * m20 < 0;
     }
 
+    /**
+     * Returns if this affine transform represents a vertical flip.
+     */
+    public boolean isVerticalFlip() {
+        return m11 < 0;
+    }
+
     @Override
     public String toString() {
         return String.format("Affine[%g %g %g %g, %g %g %g %g, %g %g %g %g]}", m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23);

worldedit-core/src/main/java/com/sk89q/worldedit/math/transform/CombinedTransform.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.transform;

worldedit-core/src/main/java/com/sk89q/worldedit/math/transform/Identity.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.transform;

worldedit-core/src/main/java/com/sk89q/worldedit/math/transform/RoundedTransform.java

@@ -2,7 +2,7 @@ package com.sk89q.worldedit.math.transform;
 
 import com.sk89q.worldedit.math.Vector3;
 
-public class RoundedTransform implements Transform{
+public class RoundedTransform implements Transform {
     private final Transform transform;
 
     public RoundedTransform(Transform transform) {
@@ -17,7 +17,8 @@ public class RoundedTransform implements Transform{
     @Override
     public Vector3 apply(Vector3 input) {
         Vector3 val = transform.apply(input);
-        return Vector3.at(Math.floor(val.getX() + 0.5), Math.floor(val.getY() + 0.5), Math.floor(val.getY() + 0.5));
+        return Vector3.at(Math.floor(val.getX() + 0.5), Math.floor(val.getY() + 0.5), Math
+            .floor(val.getY() + 0.5));
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/math/transform/Transform.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.transform;

worldedit-core/src/main/java/com/sk89q/worldedit/math/transform/Transforms.java

@@ -3,18 +3,18 @@
  * Copyright (C) sk89q <http://www.sk89q.com>
  * Copyright (C) WorldEdit team and contributors
  *
- * This program is free software: you can redistribute it and/or modify it
+ * This program is free software: you can redistribute it and/or modify
- * under the terms of the GNU Lesser General Public License as published by the
+ * it under the terms of the GNU General Public License as published by
- * Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
+ * This program is distributed in the hope that it will be useful,
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Lesser General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package com.sk89q.worldedit.math.transform;