Plex-FAWE/src/main/java/com/sk89q/worldedit/function/block/ExtentBlockCopy.java

/*
 * 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 Lesser 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.sk89q.worldedit.function.block;

import com.sk89q.worldedit.extent.Extent;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.WorldEditException;
import com.sk89q.worldedit.blocks.BaseBlock;
import com.sk89q.worldedit.function.RegionFunction;
import com.sk89q.worldedit.math.transform.Transform;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Copies blocks from one extent to another.
 */
public class ExtentBlockCopy implements RegionFunction {

    private final Extent source;
    private final Extent destination;
    private final Vector from;
    private final Vector to;
    private final Transform transform;

    /**
     * Make a new copy.
     *
     * @param source the source extent
     * @param from the source offset
     * @param destination the destination extent
     * @param to the destination offset
     * @param transform a transform to apply to positions (after source offset, before destination offset)
     */
    public ExtentBlockCopy(Extent source, Vector from, Extent destination, Vector to, Transform transform) {
        checkNotNull(source);
        checkNotNull(from);
        checkNotNull(destination);
        checkNotNull(to);
        checkNotNull(transform);
        this.source = source;
        this.from = from;
        this.destination = destination;
        this.to = to;
        this.transform = transform;
    }

    @Override
    public boolean apply(Vector position) throws WorldEditException {
        BaseBlock block = source.getBlock(position);
        return destination.setBlock(transform.apply(position.subtract(from)).add(to), block);
    }

}