From 77071211f258b2e99dda2a83ffb803f52f0082f9 Mon Sep 17 00:00:00 2001
From: sk89q <the.sk89q@gmail.com>
Date: Fri, 28 Mar 2014 16:48:53 -0700
Subject: [PATCH] Added RegionOffset and FlatRegionOffset.

---
 .../function/util/FlatRegionOffset.java       | 71 ++++++++++++++++++
 .../worldedit/function/util/RegionOffset.java | 72 +++++++++++++++++++
 2 files changed, 143 insertions(+)
 create mode 100644 src/main/java/com/sk89q/worldedit/function/util/FlatRegionOffset.java
 create mode 100644 src/main/java/com/sk89q/worldedit/function/util/RegionOffset.java

diff --git a/src/main/java/com/sk89q/worldedit/function/util/FlatRegionOffset.java b/src/main/java/com/sk89q/worldedit/function/util/FlatRegionOffset.java
new file mode 100644
index 000000000..a51b2800d
--- /dev/null
+++ b/src/main/java/com/sk89q/worldedit/function/util/FlatRegionOffset.java
@@ -0,0 +1,71 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * 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 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.function.util;
+
+import com.sk89q.worldedit.Vector2D;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.function.FlatRegionFunction;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Offsets the position parameter by adding a given offset vector.
+ */
+public class FlatRegionOffset implements FlatRegionFunction {
+
+    private Vector2D offset;
+    private final FlatRegionFunction function;
+
+    /**
+     * Create a new instance.
+     *
+     * @param offset the offset
+     * @param function the function that is called with the offset position
+     */
+    public FlatRegionOffset(Vector2D offset, FlatRegionFunction function) {
+        checkNotNull(function);
+        setOffset(offset);
+        this.function = function;
+    }
+
+    /**
+     * Get the offset that is added to the position.
+     *
+     * @return the offset
+     */
+    public Vector2D getOffset() {
+        return offset;
+    }
+
+    /**
+     * Set the offset that is added to the position.
+     *
+     * @param offset the offset
+     */
+    public void setOffset(Vector2D offset) {
+        checkNotNull(offset);
+        this.offset = offset;
+    }
+
+    @Override
+    public boolean apply(Vector2D position) throws WorldEditException {
+        return function.apply(position.add(offset));
+    }
+}
diff --git a/src/main/java/com/sk89q/worldedit/function/util/RegionOffset.java b/src/main/java/com/sk89q/worldedit/function/util/RegionOffset.java
new file mode 100644
index 000000000..b9d063d62
--- /dev/null
+++ b/src/main/java/com/sk89q/worldedit/function/util/RegionOffset.java
@@ -0,0 +1,72 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * 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 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.function.util;
+
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.function.RegionFunction;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Offsets the position parameter by adding a given offset vector.
+ */
+public class RegionOffset implements RegionFunction {
+
+    private Vector offset;
+    private final RegionFunction function;
+
+    /**
+     * Create a new instance.
+     *
+     * @param offset the offset
+     * @param function the function that is called with the offset position
+     */
+    public RegionOffset(Vector offset, RegionFunction function) {
+        checkNotNull(function);
+        setOffset(offset);
+        this.function = function;
+    }
+
+    /**
+     * Get the offset that is added to the position.
+     *
+     * @return the offset
+     */
+    public Vector getOffset() {
+        return offset;
+    }
+
+    /**
+     * Set the offset that is added to the position.
+     *
+     * @param offset the offset
+     */
+    public void setOffset(Vector offset) {
+        checkNotNull(offset);
+        this.offset = offset;
+    }
+
+    @Override
+    public boolean apply(Vector position) throws WorldEditException {
+        return function.apply(position.add(offset));
+    }
+
+}