Changed the clipboard so it doesn't store min/max anymore, just origin and offset. Added /editrotate.

src/CuboidClipboard.java

@@ -25,30 +25,52 @@ import java.util.ArrayList;
 import com.sk89q.worldedit.*;
 
 /**
+ * The clipboard remembers the state of a cuboid region.
  *
- * @author Albert
+ * @author sk89q
  */
 public class CuboidClipboard {
     private int[][][] data;
-    private Vector min;
-    private Vector max;
+    private Vector offset;
     private Vector origin;
+    private Vector size;
 
     /**
-     * Constructs the region instance. The minimum and maximum points must be
-     * the respective minimum and maximum numbers!
-     * 
-     * @param min
-     * @param max
+     * Constructs the clipboard.
+     *
+     * @param size
+     */
+    public CuboidClipboard(Vector size) {
+        this.size = size;
+        data = new int[size.getBlockX()][size.getBlockY()][size.getBlockZ()];
+        origin = new Vector();
+        offset = new Vector();
+    }
+
+    /**
+     * Constructs the clipboard.
+     *
+     * @param size
      * @param origin
      */
-    public CuboidClipboard(Vector min, Vector max, Vector origin) {
-        this.min = min;
-        this.max = max;
+    public CuboidClipboard(Vector size, Vector origin) {
+        this.size = size;
+        data = new int[size.getBlockX()][size.getBlockY()][size.getBlockZ()];
         this.origin = origin;
-        data = new int[(int)((max.getX()) - min.getX() + 1)]
-            [(int)(max.getY() - min.getY() + 1)]
-            [(int)(max.getZ() - min.getZ() + 1)];
+        offset = new Vector();
+    }
+
+    /**
+     * Constructs the clipboard.
+     *
+     * @param size
+     * @param origin
+     */
+    public CuboidClipboard(Vector size, Vector origin, Vector offset) {
+        this.size = size;
+        data = new int[size.getBlockX()][size.getBlockY()][size.getBlockZ()];
+        this.origin = origin;
+        this.offset = offset;
     }
 
     /**
@@ -57,7 +79,7 @@ public class CuboidClipboard {
      * @return width
      */
     public int getWidth() {
-        return (int)(max.getX() - min.getX() + 1);
+        return size.getBlockX();
     }
 
     /**
@@ -66,7 +88,7 @@ public class CuboidClipboard {
      * @return length
      */
     public int getLength() {
-        return (int)(max.getZ() - min.getZ() + 1);
+        return size.getBlockZ();
     }
 
     /**
@@ -75,7 +97,47 @@ public class CuboidClipboard {
      * @return height
      */
     public int getHeight() {
-        return (int)(max.getY() - min.getY() + 1);
+        return size.getBlockY();
+    }
+
+    /**
+     * Rotate the clipboard in 2D. It can only rotate by angles divisible by 90.
+     * 
+     * @param angle in degrees
+     */
+    public void rotate2D(int angle) {
+        angle = angle % 360;
+        if (angle % 90 != 0) { // Can only rotate 90 degrees at the moment
+            return;
+        }
+
+        int width = getWidth();
+        int length = getLength();
+        int height = getHeight();
+        int newWidth = angle % 180 == 0 ? width : length;
+        int newLength = angle % 180 == 0 ? length : width;
+        Vector sizeRotated = size.transform2D(angle, 0, 0, 0, 0);
+        int shiftX = sizeRotated.getX() < 0 ? newWidth - 1 : 0;
+        int shiftZ = sizeRotated.getZ() < 0 ? newLength - 1: 0;
+
+        int newData[][][] = new int[newWidth][getHeight()][newLength];
+
+        for (int x = 0; x < width; x++) {
+            for (int z = 0; z < length; z++) {
+                int newX = (new Vector(x, 0, z)).transform2D(angle, 0, 0, 0, 0)
+                        .getBlockX();
+                int newZ = (new Vector(x, 0, z)).transform2D(angle, 0, 0, 0, 0)
+                        .getBlockZ();
+                for (int y = 0; y < height; y++) {
+                    newData[shiftX + newX][y][shiftZ + newZ] = data[x][y][z];
+                }
+            }
+        }
+
+        data = newData;
+        size = new Vector(newWidth, getHeight(), newLength);
+        offset = offset.transform2D(angle, 0, 0, 0, 0)
+                .subtract(shiftX, 0, shiftZ);
     }
 
     /**
@@ -84,11 +146,11 @@ public class CuboidClipboard {
      * @param editSession
      */
     public void copy(EditSession editSession) {
-        for (int x = (int)min.getX(); x <= (int)max.getX(); x++) {
-            for (int y = (int)min.getY(); y <= (int)max.getY(); y++) {
-                for (int z = (int)min.getZ(); z <= (int)max.getZ(); z++) {
-                    data[x - (int)min.getX()][y - (int)min.getY()][z - (int)min.getZ()] =
-                        editSession.getBlock(x, y, z);
+        for (int x = 0; x < size.getBlockX(); x++) {
+            for (int y = 0; y < size.getBlockY(); y++) {
+                for (int z = 0; z < size.getBlockZ(); z++) {
+                    data[x][y][z] =
+                        editSession.getBlock(new Vector(x, y, z).add(origin));
                 }
             }
         }
@@ -104,76 +166,31 @@ public class CuboidClipboard {
      */
     public void paste(EditSession editSession, Vector newOrigin, boolean noAir)
             throws MaxChangedBlocksException {
-        int offsetX = (int)(min.getX() - origin.getX() + newOrigin.getX());
-        int offsetY = (int)(min.getY() - origin.getY() + newOrigin.getY());
-        int offsetZ = (int)(min.getZ() - origin.getZ() + newOrigin.getZ());
-
-        place(editSession, offsetX, offsetY, offsetZ, noAir);
+        place(editSession, newOrigin.add(offset), noAir);
     }
 
     /**
      * Places the blocks in a position from the minimum corner.
      * 
      * @param editSession
-     * @param offsetX
-     * @param offsetY
-     * @param offsetZ
+     * @param pos
      * @param noAir
      * @throws MaxChangedBlocksException
      */
-    public void place(EditSession editSession, int offsetX,
-            int offsetY, int offsetZ, boolean noAir)
+    public void place(EditSession editSession, Vector pos, boolean noAir)
             throws MaxChangedBlocksException {
-        int xs = getWidth();
-        int ys = getHeight();
-        int zs = getLength();
-
-        for (int x = 0; x < xs; x++) {
-            for (int y = 0; y < ys; y++) {
-                for (int z = 0; z < zs; z++) {
-                    if (noAir && data[x][y][z] == 0) { continue; }
-
-                    editSession.setBlock(x + offsetX, y + offsetY, z + offsetZ,
-                                         data[x][y][z]);
+        for (int x = 0; x < size.getBlockX(); x++) {
+            for (int y = 0; y < size.getBlockY(); y++) {
+                for (int z = 0; z < size.getBlockZ(); z++) {
+                    if (noAir && data[x][y][z] == 0) continue;
+                    
+                    editSession.setBlock(new Vector(x, y, z).add(pos),
+                            data[x][y][z]);
                 }
             }
         }
     }
 
-    /**
-     * Stack the clipboard in a certain direction a certain number of
-     * times.
-     *
-     * @param editSession
-     * @param xm
-     * @param ym
-     * @param zm
-     * @param count
-     * @param noAir
-     * @param moveOrigin move the origin
-     * @throws MaxChangedBlocksException
-     */
-    public void stack(EditSession editSession, int xm, int ym, int zm, short count,
-            boolean noAir, boolean moveOrigin) throws MaxChangedBlocksException {
-        int xs = getWidth();
-        int ys = getHeight();
-        int zs = getLength();
-        int offsetX = (int)min.getX();
-        int offsetY = (int)min.getY();
-        int offsetZ = (int)min.getZ();
-
-        for (short i = 1; i <= count; i++) {
-            place(editSession, offsetX + xm * xs, offsetY + ym * ys,
-                    offsetZ + zm * zs, noAir);
-        }
-
-        if (moveOrigin) {
-            min = new Vector((int)offsetX + xm * count,
-                            (int)offsetY + ym * count,
-                            (int)offsetZ + zm * count);
-        }
-    }
-
     /**
      * Saves the clipboard data to a .schematic-format file.
      *
@@ -182,32 +199,32 @@ public class CuboidClipboard {
      * @throws SchematicException
      */
     public void saveSchematic(String path) throws IOException, SchematicException {
-        int xs = getWidth();
-        int ys = getHeight();
-        int zs = getLength();
+        int width = getWidth();
+        int height = getHeight();
+        int length = getLength();
 
-        if (xs > 65535) {
+        if (width > 65535) {
             throw new SchematicException("Width of region too large for a .schematic");
         }
-        if (ys > 65535) {
+        if (height > 65535) {
             throw new SchematicException("Height of region too large for a .schematic");
         }
-        if (zs > 65535) {
+        if (length > 65535) {
             throw new SchematicException("Length of region too large for a .schematic");
         }
 
         HashMap<String,Tag> schematic = new HashMap<String,Tag>();
-        schematic.put("Width", new ShortTag("Width", (short)xs));
-        schematic.put("Length", new ShortTag("Length", (short)zs));
-        schematic.put("Height", new ShortTag("Height", (short)ys));
+        schematic.put("Width", new ShortTag("Width", (short)width));
+        schematic.put("Length", new ShortTag("Length", (short)length));
+        schematic.put("Height", new ShortTag("Height", (short)height));
         schematic.put("Materials", new StringTag("Materials", "Alpha"));
 
         // Copy blocks
-        byte[] blocks = new byte[xs * ys * zs];
-        for (int x = 0; x < xs; x++) {
-            for (int y = 0; y < ys; y++) {
-                for (int z = 0; z < zs; z++) {
-                    int index = y * xs * zs + z * xs + x;
+        byte[] blocks = new byte[width * height * length];
+        for (int x = 0; x < width; x++) {
+            for (int y = 0; y < height; y++) {
+                for (int z = 0; z < length; z++) {
+                    int index = y * width * length + z * width + x;
                     blocks[index] = (byte)data[x][y][z];
                 }
             }
@@ -215,7 +232,7 @@ public class CuboidClipboard {
         schematic.put("Blocks", new ByteArrayTag("Blocks", blocks));
 
         // Current data is not supported
-        byte[] data = new byte[xs * ys * zs];
+        byte[] data = new byte[width * height * length];
         schematic.put("Data", new ByteArrayTag("Data", data));
 
         // These are not stored either
@@ -238,7 +255,7 @@ public class CuboidClipboard {
      * @throws SchematicException
      * @throws IOException
      */
-    public static CuboidClipboard loadSchematic(String path, Vector origin)
+    public static CuboidClipboard loadSchematic(String path)
             throws SchematicException, IOException {
         FileInputStream stream = new FileInputStream(path);
         NBTInputStream nbtStream = new NBTInputStream(stream);
@@ -250,27 +267,23 @@ public class CuboidClipboard {
         if (!schematic.containsKey("Blocks")) {
             throw new SchematicException("Schematic file is missing a \"Blocks\" tag");
         }
-        short xs = (Short)getChildTag(schematic, "Width", ShortTag.class).getValue();
-        short zs = (Short)getChildTag(schematic, "Length", ShortTag.class).getValue();
-        short ys = (Short)getChildTag(schematic, "Height", ShortTag.class).getValue();
+        short width = (Short)getChildTag(schematic, "Width", ShortTag.class).getValue();
+        short length = (Short)getChildTag(schematic, "Length", ShortTag.class).getValue();
+        short height = (Short)getChildTag(schematic, "Height", ShortTag.class).getValue();
         String materials = (String)getChildTag(schematic, "Materials", StringTag.class).getValue();
         if (!materials.equals("Alpha")) {
             throw new SchematicException("Schematic file is not an Alpha schematic");
         }
         byte[] blocks = (byte[])getChildTag(schematic, "Blocks", ByteArrayTag.class).getValue();
 
-        Vector min = origin;
-        Vector max = new Vector(
-                origin.getX() + xs - 1,
-                origin.getY() + ys - 1,
-                origin.getZ() + zs - 1
-                );
-        CuboidClipboard clipboard = new CuboidClipboard(min, max, origin);
+        Vector size = new Vector(width, height, length);
 
-        for (int x = 0; x < xs; x++) {
-            for (int y = 0; y < ys; y++) {
-                for (int z = 0; z < zs; z++) {
-                    int index = y * xs * zs + z * xs + x;
+        CuboidClipboard clipboard = new CuboidClipboard(size);
+
+        for (int x = 0; x < width; x++) {
+            for (int y = 0; y < height; y++) {
+                for (int z = 0; z < length; z++) {
+                    int index = y * width * length + z * width + x;
                     clipboard.data[x][y][z] = blocks[index];
                 }
             }
@@ -279,6 +292,15 @@ public class CuboidClipboard {
         return clipboard;
     }
 
+    /**
+     * Get child tag of a NBT structure.
+     * 
+     * @param items
+     * @param key
+     * @param expected
+     * @return child tag
+     * @throws SchematicException
+     */
     private static Tag getChildTag(Map<String,Tag> items, String key, Class expected)
             throws SchematicException {
         if (!items.containsKey(key)) {

src/WorldEdit.java

@@ -94,6 +94,7 @@ public class WorldEdit {
         commands.put("/editlimit", "[Num] - See documentation");
         commands.put("/editexpand", "<Dir> [Num] - Expands the selection");
         commands.put("/editcontract", "<Dir> [Num] - Contracts the selection");
+        commands.put("/editrotate", "[Angle] - Rotate the clipboard");
         commands.put("/forestgen", "<Size> - Make an ugly pine tree forest");
         commands.put("/unstuck", "Go up to the first free spot");
         commands.put("/ascend", "Go up one level");
@@ -303,15 +304,11 @@ public class WorldEdit {
         // Paste
         } else if (split[0].equalsIgnoreCase("/editpasteair") ||
                    split[0].equalsIgnoreCase("/editpaste")) {
-            if (session.getClipboard() == null) {
-                player.printError("Nothing is in your clipboard.");
-            } else {
-                Vector pos = player.getBlockIn();
-                session.getClipboard().paste(editSession, pos,
-                    split[0].equalsIgnoreCase("/editpaste"));
-                player.findFreePosition();
-                player.print("Pasted. Undo with /editundo");
-            }
+            Vector pos = player.getBlockIn();
+            session.getClipboard().paste(editSession, pos,
+                split[0].equalsIgnoreCase("/editpaste"));
+            player.findFreePosition();
+            player.print("Pasted. Undo with /editundo");
 
             return true;
 
@@ -363,8 +360,7 @@ public class WorldEdit {
                 if (!filePath.substring(0, dirPath.length()).equals(dirPath)) {
                     player.printError("Schematic could not read or it does not exist.");
                 } else {
-                    Vector origin = player.getBlockIn();
-                    session.setClipboard(CuboidClipboard.loadSchematic(filePath, origin));
+                    session.setClipboard(CuboidClipboard.loadSchematic(filePath));
                     logger.log(Level.INFO, player.getName() + " loaded " + filePath);
                     player.print(filename + " loaded.");
                 }
@@ -377,12 +373,7 @@ public class WorldEdit {
             return true;
 
         // Save clipboard to .schematic
-        } else if (split[0].equalsIgnoreCase("/editsave")) {
-            if (session.getClipboard() == null) {
-                player.printError("Nothing is in your clipboard.");
-                return true;
-            }
-            
+        } else if (split[0].equalsIgnoreCase("/editsave")) {            
             checkArgs(split, 1, 1, split[0]);
             String filename = split[1].replace("\0", "") + ".schematic";
             File dir = new File("schematics");
@@ -488,7 +479,9 @@ public class WorldEdit {
             Vector max = region.getMaximumPoint();
             Vector pos = player.getBlockIn();
 
-            CuboidClipboard clipboard = new CuboidClipboard(min, max, pos);
+            CuboidClipboard clipboard = new CuboidClipboard(
+                    max.subtract(min).add(new Vector(1, 1, 1)),
+                    min, min.subtract(pos));
             clipboard.copy(editSession);
             session.setClipboard(clipboard);
             
@@ -543,7 +536,7 @@ public class WorldEdit {
 
             return true;
 
-        // Expand
+        // Contract
         } else if (split[0].equalsIgnoreCase("/editcontract")) {
             checkArgs(split, 1, 2, split[0]);
             Vector dir;
@@ -563,6 +556,20 @@ public class WorldEdit {
             int newSize = region.getSize();
             player.print("Region contracted " + (oldSize - newSize) + " blocks.");
 
+            return true;
+
+        // Rotate
+        } else if (split[0].equalsIgnoreCase("/editrotate")) {
+            checkArgs(split, 1, 1, split[0]);
+            int angle = Integer.parseInt(split[1]);
+            if (angle % 90 == 0) {
+                CuboidClipboard clipboard = session.getClipboard();
+                clipboard.rotate2D(angle);
+                player.print("Clipboard rotated by " + angle + " degrees.");
+            } else {
+                player.printError("Angles must be divisible by 90 degrees.");
+            }
+
             return true;
         }
 

src/WorldEditSMListener.java

@@ -161,6 +161,8 @@ public class WorldEditSMListener extends PluginListener {
             modPlayer.sendMessage(Colors.Rose + "Unknown direction: " + ue.getDirection());
         } catch (InsufficientArgumentsException e6) {
             modPlayer.sendMessage(Colors.Rose + e6.getMessage());
+        } catch (EmptyClipboardException ec) {
+            modPlayer.sendMessage(Colors.Rose + "Your clipboard is empty.");
         } catch (WorldEditException e7) {
             modPlayer.sendMessage(Colors.Rose + e7.getMessage());
         }

src/WorldEditSession.java

@@ -172,12 +172,16 @@ public class WorldEditSession {
     }
 
     /**
-     * Get the region. May return null. If you change the region, you should
+     * Get the region. If you change the region, you should
      * call learnRegionChanges().
      * 
      * @return region
+     * @throws IncompleteRegionException
      */
-    public Region getRegion() {
+    public Region getRegion() throws IncompleteRegionException {
+        if (region == null) {
+            throw new IncompleteRegionException();
+        }
         return region;
     }
 
@@ -185,8 +189,12 @@ public class WorldEditSession {
      * Gets the clipboard.
      * 
      * @return clipboard, may be null
+     * @throws EmptyClipboardException
      */
-    public CuboidClipboard getClipboard() {
+    public CuboidClipboard getClipboard() throws EmptyClipboardException {
+        if (clipboard == null) {
+            throw new EmptyClipboardException();
+        }
         return clipboard;
     }
 

src/com/sk89q/worldedit/EmptyClipboardException.java

@@ -0,0 +1,28 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * 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 ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit;
+
+/**
+ *
+ * @author Albert
+ */
+public class EmptyClipboardException extends WorldEditException {
+
+}

src/com/sk89q/worldedit/Vector.java

@@ -356,6 +356,29 @@ public class Vector {
                 Math.pow(pt.z - z, 2));
     }
 
+    /**
+     * 2D transformation.
+     * 
+     * @param vec
+     * @param angle in degrees
+     * @param aboutX
+     * @param aboutY
+     * @param translateX
+     * @param translateY
+     * @return
+     */
+    public Vector transform2D(double angle,
+            double aboutX, double aboutZ, double translateX, double translateZ) {
+        angle = Math.toRadians(angle);
+        double x = this.x;
+        double z = this.z;
+        double x2 = x * Math.cos(angle) - z * Math.sin(angle);
+        double z2 = x * Math.sin(angle) + z * Math.cos(angle);
+        return new Vector(x2 + aboutX + translateX,
+                          y,
+                          z2 + aboutZ + translateZ);
+    }
+
     /**
      * Get a block point from a point.
      *