mirror of
https://github.com/plexusorg/Plex-FAWE.git
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431 lines
12 KiB
Java
431 lines
12 KiB
Java
/*
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* WorldEdit, a Minecraft world manipulation toolkit
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* Copyright (C) sk89q <http://www.sk89q.com>
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* Copyright (C) WorldEdit team and contributors
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.sk89q.worldedit.regions;
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import static com.google.common.base.Preconditions.checkNotNull;
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import com.boydti.fawe.beta.implementation.filter.block.ChunkFilterBlock;
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import com.boydti.fawe.beta.Filter;
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import com.boydti.fawe.beta.IChunk;
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import com.boydti.fawe.beta.IChunkGet;
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import com.boydti.fawe.beta.IChunkSet;
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import com.sk89q.worldedit.extent.Extent;
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import com.sk89q.worldedit.math.BlockVector2;
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import com.sk89q.worldedit.math.BlockVector3;
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import com.sk89q.worldedit.math.Vector2;
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import com.sk89q.worldedit.math.Vector3;
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import com.sk89q.worldedit.math.geom.Polygons;
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import com.sk89q.worldedit.regions.iterator.FlatRegion3DIterator;
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import com.sk89q.worldedit.regions.iterator.FlatRegionIterator;
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import com.sk89q.worldedit.world.World;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.util.Iterator;
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import java.util.List;
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/**
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* Represents a cylindrical region.
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*/
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public class CylinderRegion extends AbstractRegion implements FlatRegion {
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private BlockVector2 center;
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private Vector2 radius;
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private Vector2 radiusInverse;
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private int minY;
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private int maxY;
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private boolean hasY = false;
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/**
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* Construct the region
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*/
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public CylinderRegion() {
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this((World) null);
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}
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/**
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* Construct the region.
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*
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* @param world the world
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*/
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public CylinderRegion(World world) {
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this(world, BlockVector3.ZERO, Vector2.ZERO, 0, 0);
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hasY = false;
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}
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/**
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* Construct the region.
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*
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* @param world the world
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* @param center the center position
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* @param radius the radius along the X and Z axes
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* @param minY the minimum Y, inclusive
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* @param maxY the maximum Y, inclusive
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*/
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public CylinderRegion(World world, BlockVector3 center, Vector2 radius, int minY, int maxY) {
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super(world);
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setCenter(center.toBlockVector2());
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setRadius(radius);
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this.minY = minY;
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this.maxY = maxY;
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hasY = true;
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}
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/**
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* Construct the region.
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*
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* @param center the center position
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* @param radius the radius along the X and Z axes
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* @param minY the minimum Y, inclusive
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* @param maxY the maximum Y, inclusive
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*/
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public CylinderRegion(BlockVector3 center, Vector2 radius, int minY, int maxY) {
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super(null);
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setCenter(center.toBlockVector2());
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setRadius(radius);
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this.minY = minY;
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this.maxY = maxY;
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hasY = true;
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}
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public CylinderRegion(CylinderRegion region) {
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this(region.world, region.getCenter().toBlockPoint(), region.getRadius(), region.minY, region.maxY);
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hasY = region.hasY;
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}
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@Override
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public Vector3 getCenter() {
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return center.toVector3((maxY + minY) / 2);
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}
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/**
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* Sets the main center point of the region
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*
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* @param center the center point
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*/
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public void setCenter(BlockVector2 center) {
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this.center = center;
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}
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/**
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* Returns the radius of the cylinder
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*
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* @return the radius along the X and Z axes
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*/
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public Vector2 getRadius() {
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return radius.subtract(0.5, 0.5);
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}
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/**
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* Sets the radius of the cylinder
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*
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* @param radius the radius along the X and Z axes
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*/
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public void setRadius(Vector2 radius) {
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this.radius = radius.add(0.5, 0.5);
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this.radiusInverse = Vector2.ONE.divide(radius);
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}
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/**
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* Extends the radius to be at least the given radius
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*
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* @param minRadius the minimum radius
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*/
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public void extendRadius(Vector2 minRadius) {
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setRadius(minRadius.getMaximum(getRadius()));
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}
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/**
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* Set the minimum Y.
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*
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* @param y the y
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*/
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public void setMinimumY(int y) {
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hasY = true;
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minY = y;
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}
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/**
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* Se the maximum Y.
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*
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* @param y the y
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*/
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public void setMaximumY(int y) {
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hasY = true;
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maxY = y;
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}
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@Override
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public BlockVector3 getMinimumPoint() {
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return center.toVector2().subtract(getRadius()).toVector3(minY).toBlockPoint();
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}
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@Override
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public BlockVector3 getMaximumPoint() {
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return center.toVector2().add(getRadius()).toVector3(maxY).toBlockPoint();
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}
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@Override
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public int getMaximumY() {
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int worldMax = world != null ? world.getMaxY() - 1 : 255;
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if (maxY > worldMax) {
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return maxY = worldMax;
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}
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return maxY;
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}
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@Override
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public int getMinimumY() {
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if (minY < 0) {
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return minY = 0;
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}
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return minY;
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}
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private static final BigDecimal PI = BigDecimal.valueOf(Math.PI);
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@Override
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public long getVolume() {
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return BigDecimal.valueOf(radius.getX())
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.multiply(BigDecimal.valueOf(radius.getZ()))
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.multiply(PI)
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.multiply(BigDecimal.valueOf(getHeight()))
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.setScale(0, RoundingMode.FLOOR)
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.longValue();
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}
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@Override
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public int getWidth() {
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return (int) (2 * radius.getX());
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}
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@Override
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public int getHeight() {
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return maxY - minY + 1;
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}
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@Override
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public int getLength() {
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return (int) (2 * radius.getZ());
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}
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private BlockVector2 calculateDiff2D(BlockVector3... changes) throws RegionOperationException {
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BlockVector2 diff = BlockVector2.ZERO;
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for (BlockVector3 change : changes) {
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diff = diff.add(change.toBlockVector2());
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}
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if ((diff.getBlockX() & 1) + (diff.getBlockZ() & 1) != 0) {
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throw new RegionOperationException("Cylinders changes must be even for each horizontal dimensions.");
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}
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return diff.divide(2).floor();
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}
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private BlockVector2 calculateChanges2D(BlockVector3... changes) {
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BlockVector2 total = BlockVector2.ZERO;
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for (BlockVector3 change : changes) {
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total = total.add(change.toBlockVector2().abs());
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}
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return total.divide(2).floor();
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}
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/**
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* Expand the region.
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* Expand the region.
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*
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* @param changes array/arguments with multiple related changes
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* @throws RegionOperationException
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*/
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@Override
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public void expand(BlockVector3... changes) throws RegionOperationException {
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center = center.add(calculateDiff2D(changes));
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radius = radius.add(calculateChanges2D(changes).toVector2());
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this.radiusInverse = Vector2.ONE.divide(radius);
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for (BlockVector3 change : changes) {
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int changeY = change.getBlockY();
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if (changeY > 0) {
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maxY += changeY;
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} else {
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minY += changeY;
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}
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}
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}
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/**
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* Contract the region.
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*
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* @param changes array/arguments with multiple related changes
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* @throws RegionOperationException
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*/
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@Override
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public void contract(BlockVector3... changes) throws RegionOperationException {
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center = center.subtract(calculateDiff2D(changes));
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Vector2 newRadius = radius.subtract(calculateChanges2D(changes).toVector2());
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radius = Vector2.at(1.5, 1.5).getMaximum(newRadius);
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this.radiusInverse = Vector2.ONE.divide(radius);
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for (BlockVector3 change : changes) {
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int height = maxY - minY;
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int changeY = change.getBlockY();
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if (changeY > 0) {
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minY += Math.min(height, changeY);
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} else {
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maxY += Math.max(-height, changeY);
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}
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}
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}
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@Override
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public void shift(BlockVector3 change) throws RegionOperationException {
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center = center.add(change.toBlockVector2());
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int changeY = change.getBlockY();
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maxY += changeY;
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minY += changeY;
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}
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/**
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* Checks to see if a point is inside this region.
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*/
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/* Slow and unnecessary
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@Override
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public boolean contains(BlockVector3 position) {
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final int blockY = position.getBlockY();
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if (blockY < minY || blockY > maxY) {
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return false;
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}
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return position.toBlockVector2().subtract(center).toVector2().divide(radius).lengthSq() <= 1;
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}
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*/
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/**
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* Checks to see if a point is inside this region.
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*/
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@Override
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public boolean contains(int x, int y, int z) {
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if (y < minY || y > maxY) {
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return false;
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}
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return contains(x, z);
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}
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@Override
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public boolean contains(int x, int z) {
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double dx = Math.abs(x - center.getBlockX()) * radiusInverse.getX();
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double dz = Math.abs(z - center.getBlockZ()) * radiusInverse.getZ();
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return dx * dx + dz * dz <= 1;
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}
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@Override
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public boolean contains(BlockVector3 position) {
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return contains(position.getX(), position.getY(), position.getZ());
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}
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/**
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* Sets the height of the cylinder to fit the specified Y.
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*
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* @param y the y value
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* @return true if the area was expanded
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*/
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public boolean setY(int y) {
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if (!hasY) {
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minY = y;
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maxY = y;
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hasY = true;
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return true;
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} else if (y < minY) {
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minY = y;
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return true;
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} else if (y > maxY) {
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maxY = y;
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return true;
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}
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return false;
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}
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@Override
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public Iterator<BlockVector3> iterator() {
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return new FlatRegion3DIterator(this);
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}
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@Override
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public Iterable<BlockVector2> asFlatRegion() {
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return () -> new FlatRegionIterator(CylinderRegion.this);
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}
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/**
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* Returns string representation in the format
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* "(centerX, centerZ) - (radiusX, radiusZ) - (minY, maxY)"
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*
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* @return string
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*/
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@Override
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public String toString() {
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return center + " - " + radius + "(" + minY + ", " + maxY + ")";
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}
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@Override
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public CylinderRegion clone() {
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return (CylinderRegion) super.clone();
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}
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@Override
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public List<BlockVector2> polygonize(int maxPoints) {
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return Polygons.polygonizeCylinder(center, radius, maxPoints);
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}
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/**
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* Return a new instance with the given center and radius in the X and Z
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* axes with a Y that extends from the bottom of the extent to the top
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* of the extent.
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*
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* @param extent the extent
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* @param center the center position
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* @param radius the radius in the X and Z axes
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* @return a region
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*/
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public static CylinderRegion createRadius(Extent extent, BlockVector3 center, double radius) {
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checkNotNull(extent);
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checkNotNull(center);
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Vector2 radiusVec = Vector2.at(radius, radius);
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int minY = extent.getMinimumPoint().getBlockY();
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int maxY = extent.getMaximumPoint().getBlockY();
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return new CylinderRegion(center, radiusVec, minY, maxY);
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}
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@Override
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public void filter(final IChunk chunk, final Filter filter, final ChunkFilterBlock block,
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final IChunkGet get, final IChunkSet set, boolean full) {
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int bcx = chunk.getX() >> 4;
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int bcz = chunk.getZ() >> 4;
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int tcx = bcx + 15;
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int tcz = bcz + 15;
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if (contains(bcx, bcz) && contains(tcx, tcz)) {
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filter(chunk, filter, block, get, set, minY, maxY, full);
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return;
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}
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super.filter(chunk, filter, block, get, set, full);
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}
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}
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