/*
* 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.command;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.extent.Extent;
import com.sk89q.worldedit.extent.clipboard.Clipboard;
import com.sk89q.worldedit.extent.transform.BlockTransformExtent;
import com.sk89q.worldedit.function.operation.ForwardExtentCopy;
import com.sk89q.worldedit.function.operation.Operation;
import com.sk89q.worldedit.math.transform.AffineTransform;
import com.sk89q.worldedit.math.transform.CombinedTransform;
import com.sk89q.worldedit.math.transform.Transform;
import com.sk89q.worldedit.regions.CuboidRegion;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.world.registry.WorldData;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Helper class to 'bake' a transform into a clipboard.
*
* <p>This class needs a better name and may need to be made more generic.</p>
*
* @see Clipboard
* @see Transform
*/
class FlattenedClipboardTransform {
private final Clipboard original;
private final Transform transform;
private final WorldData worldData;
/**
* Create a new instance.
*
* @param original the original clipboard
* @param transform the transform
* @param worldData the world data instance
*/
private FlattenedClipboardTransform(Clipboard original, Transform transform, WorldData worldData) {
checkNotNull(original);
checkNotNull(transform);
checkNotNull(worldData);
this.original = original;
this.transform = transform;
this.worldData = worldData;
}
/**
* Get the transformed region.
*
* @return the transformed region
*/
public Region getTransformedRegion() {
Region region = original.getRegion();
Vector minimum = region.getMinimumPoint();
Vector maximum = region.getMaximumPoint();
Transform transformAround =
new CombinedTransform(
new AffineTransform().translate(original.getOrigin().multiply(-1)),
transform,
new AffineTransform().translate(original.getOrigin()));
Vector[] corners = new Vector[] {
minimum,
maximum,
minimum.setX(maximum.getX()),
minimum.setY(maximum.getY()),
minimum.setZ(maximum.getZ()),
maximum.setX(minimum.getX()),
maximum.setY(minimum.getY()),
maximum.setZ(minimum.getZ()) };
for (int i = 0; i < corners.length; i++) {
corners[i] = transformAround.apply(corners[i]);
}
Vector newMinimum = corners[0];
Vector newMaximum = corners[0];
for (int i = 1; i < corners.length; i++) {
newMinimum = Vector.getMinimum(newMinimum, corners[i]);
newMaximum = Vector.getMaximum(newMaximum, corners[i]);
}
// After transformation, the points may not really sit on a block,
// so we should expand the region for edge cases
newMinimum = newMinimum.setX(Math.floor(newMinimum.getX()));
newMinimum = newMinimum.setY(Math.floor(newMinimum.getY()));
newMinimum = newMinimum.setZ(Math.floor(newMinimum.getZ()));
newMaximum = newMaximum.setX(Math.ceil(newMaximum.getX()));
newMaximum = newMaximum.setY(Math.ceil(newMaximum.getY()));
newMaximum = newMaximum.setZ(Math.ceil(newMaximum.getZ()));
return new CuboidRegion(newMinimum, newMaximum);
}
/**
* Create an operation to copy from the original clipboard to the given extent.
*
* @param target the target
* @return the operation
*/
public Operation copyTo(Extent target) {
BlockTransformExtent extent = new BlockTransformExtent(original, transform, worldData.getBlockRegistry());
ForwardExtentCopy copy = new ForwardExtentCopy(extent, original.getRegion(), original.getOrigin(), target, original.getOrigin());
copy.setTransform(transform);
return copy;
}
/**
* Create a new instance to bake the transform with.
*
* @param original the original clipboard
* @param transform the transform
* @param worldData the world data instance
* @return a builder
*/
public static FlattenedClipboardTransform transform(Clipboard original, Transform transform, WorldData worldData) {
return new FlattenedClipboardTransform(original, transform, worldData);
}
}