Plex-FAWE/src/main/java/com/sk89q/worldedit/regions/EllipsoidRegion.java
TomyLobo 616f9a2360 Added support for ellipsoid and sphere selections.
//sel ellipsoid, //sel sphere.
2011-12-30 12:02:15 +01:00

294 lines
6.9 KiB
Java

// $Id$
/*
* WorldEdit
* Copyright (C) 2010 sk89q <http://www.sk89q.com> 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.regions;
import com.sk89q.worldedit.BlockVector;
import com.sk89q.worldedit.LocalWorld;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.Vector2D;
import com.sk89q.worldedit.data.ChunkStore;
import java.util.Iterator;
import java.util.Set;
import java.util.HashSet;
/**
*
* @author TomyLobo
*/
public class EllipsoidRegion implements Region {
/**
* Stores the center.
*/
private Vector center;
/**
* Stores the radiuses plus 0.5 on each axis.
*/
private Vector radius;
/**
* Stores the world.
*/
private LocalWorld world;
/**
* Construct a new instance of this ellipsoid region.
*
* @param pos1
* @param pos2
*/
public EllipsoidRegion(Vector pos1, Vector pos2) {
this(null, pos1, pos2);
}
/**
* Construct a new instance of this ellipsoid region.
*
* @param world
* @param center
* @param radius
*/
public EllipsoidRegion(LocalWorld world, Vector center, Vector radius) {
this.world = world;
this.center = center;
this.radius = radius;
}
public EllipsoidRegion(EllipsoidRegion ellipsoidRegion) {
this(ellipsoidRegion.world, ellipsoidRegion.center, ellipsoidRegion.radius);
}
/**
* Get the lower point of the ellipsoid.
*
* @return min point
*/
public Vector getMinimumPoint() {
return center.subtract(getRadius());
}
/**
* Get the upper point of the ellipsoid.
*
* @return max point
*/
public Vector getMaximumPoint() {
return center.add(getRadius());
}
/**
* Get the number of blocks in the region.
*
* @return number of blocks
*/
public int getArea() {
return (int) Math.floor((4.0 / 3.0) * Math.PI * radius.getX() * radius.getY() * radius.getZ());
}
/**
* Get X-size.
*
* @return width
*/
public int getWidth() {
return (int) (2 * radius.getX());
}
/**
* Get Y-size.
*
* @return height
*/
public int getHeight() {
return (int) (2 * radius.getY());
}
/**
* Get Z-size.
*
* @return length
*/
public int getLength() {
return (int) (2 * radius.getZ());
}
/**
* Expands the ellipsoid in a direction.
*
* @param change
*/
public void expand(Vector change) {
}
/**
* Contracts the ellipsoid in a direction.
*
* @param change
*/
public void contract(Vector change) {
}
/**
* Get the center.
*
* @return center
*/
public Vector getCenter() {
return center;
}
/**
* Set the center.
*
* @param center
*/
public void setCenter(Vector center) {
this.center = center;
}
/**
* Get the radiuses.
*
* @return radiuses
*/
public Vector getRadius() {
return radius.subtract(0.5, 0.5, 0.5);
}
/**
* Set radiuses.
*
* @param radiuses
*/
public void setRadius(Vector radius) {
this.radius = radius.add(0.5, 0.5, 0.5);
}
/**
* Get a list of chunks that this region is within.
*
* @return
*/
public Set<Vector2D> getChunks() {
Set<Vector2D> chunks = new HashSet<Vector2D>();
Vector min = getMinimumPoint();
Vector max = getMaximumPoint();
for (int x = min.getBlockX(); x <= max.getBlockX(); ++x) {
for (int y = min.getBlockY(); y <= max.getBlockY(); ++y) {
for (int z = min.getBlockZ(); z <= max.getBlockZ(); ++z) {
Vector pt = new Vector(x, y, z);
chunks.add(ChunkStore.toChunk(pt));
}
}
}
return chunks;
}
/**
* Returns true based on whether the region contains the point,
*
* @param pt
*/
public boolean contains(Vector pt) {
return pt.subtract(center).divide(radius).lengthSq() <= 1;
}
/**
* Get the iterator.
*
* @return iterator of points inside the region
*/
public Iterator<BlockVector> iterator() {
return new Iterator<BlockVector>() {
private Vector min = getMinimumPoint();
private Vector max = getMaximumPoint();
private int nextX = min.getBlockX();
private int nextY = min.getBlockY();
private int nextZ = min.getBlockZ();
{
forward();
}
public boolean hasNext() {
return (nextX != Integer.MIN_VALUE);
}
private void forward() {
while (hasNext() && !contains(new BlockVector(nextX, nextY, nextZ))) {
forwardOne();
}
}
public BlockVector next() {
if (!hasNext()) throw new java.util.NoSuchElementException();
BlockVector answer = new BlockVector(nextX, nextY, nextZ);
forwardOne();
forward();
return answer;
}
private void forwardOne() {
if (++nextX <= max.getBlockX()) {
return;
}
nextX = min.getBlockX();
if (++nextY <= max.getBlockY()) {
return;
}
nextY = min.getBlockY();
if (++nextZ <= max.getBlockZ()) {
return;
}
nextX = Integer.MIN_VALUE;
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
/**
* Returns string representation in the format
* "(centerX, centerY, centerZ) - (radiusX, radiusY, radiusZ)".
*
* @return string
*/
@Override
public String toString() {
return center + " - " + getRadius();
}
public LocalWorld getWorld() {
return world;
}
public void setWorld(LocalWorld world) {
this.world = world;
}
public void extendRadius(Vector minRadius) {
setRadius(Vector.getMaximum(minRadius, getRadius()));
}
}