Added GardenPatchGenerator, GroundScatterFunction.

/pumpkins now uses the new classes.

src/main/java/com/sk89q/worldedit/operation/GroundScatterFunction.java

@@ -0,0 +1,70 @@
+/*
+ * 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.operation;
+
+import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.blocks.BaseBlock;
+import com.sk89q.worldedit.generator.GroundGenerator;
+
+/**
+ * Randomly applies the given {@link RegionFunction} onto random ground blocks.
+ * <p>
+ * This class can be used to generate a structure randomly over an area.
+ */
+public class GroundScatterFunction extends GroundGenerator {
+
+    private RegionFunction function;
+
+    /**
+     * Create a new instance.
+     *
+     * @param editSession the edit session
+     * @param function the function
+     */
+    public GroundScatterFunction(EditSession editSession, RegionFunction function) {
+        super(editSession);
+        this.function = function;
+    }
+
+    /**
+     * Get the function to apply.
+     *
+     * @return the region function
+     */
+    public RegionFunction getFunction() {
+        return function;
+    }
+
+    /**
+     * Set the function to apply.
+     *
+     * @param function the region function
+     */
+    public void setFunction(RegionFunction function) {
+        this.function = function;
+    }
+
+    @Override
+    protected boolean apply(Vector position, BaseBlock block) throws WorldEditException {
+        return function.apply(position);
+    }
+}