/*
* 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.regions.selector;
import com.google.common.base.Optional;
import com.sk89q.worldedit.BlockVector;
import com.sk89q.worldedit.BlockVector2D;
import com.sk89q.worldedit.IncompleteRegionException;
import com.sk89q.worldedit.LocalSession;
import com.sk89q.worldedit.Vector;
import com.sk89q.worldedit.extension.platform.Actor;
import com.sk89q.worldedit.internal.cui.CUIRegion;
import com.sk89q.worldedit.internal.cui.SelectionPointEvent;
import com.sk89q.worldedit.internal.cui.SelectionPolygonEvent;
import com.sk89q.worldedit.regions.ConvexPolyhedralRegion;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.regions.RegionSelector;
import com.sk89q.worldedit.regions.polyhedron.Triangle;
import com.sk89q.worldedit.regions.selector.limit.SelectorLimits;
import com.sk89q.worldedit.world.World;
import javax.annotation.Nullable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Creates a {@code ConvexPolyhedralRegion} from a user's selections.
*/
public class ConvexPolyhedralRegionSelector extends com.sk89q.worldedit.regions.ConvexPolyhedralRegionSelector implements RegionSelector, CUIRegion {
private final transient ConvexPolyhedralRegion region;
private transient BlockVector pos1;
/**
* Create a new selector with a {@code null} world.
*/
public ConvexPolyhedralRegionSelector() {
this((World) null);
}
/**
* Create a new selector.
*
* @param world the world, which may be {@code null}
*/
public ConvexPolyhedralRegionSelector(@Nullable World world) {
region = new ConvexPolyhedralRegion(world);
}
/**
* Create a new selector.
*
* @param oldSelector the old selector
*/
public ConvexPolyhedralRegionSelector(RegionSelector oldSelector) {
checkNotNull(oldSelector);
if (oldSelector instanceof ConvexPolyhedralRegionSelector) {
final ConvexPolyhedralRegionSelector convexPolyhedralRegionSelector = (ConvexPolyhedralRegionSelector) oldSelector;
pos1 = convexPolyhedralRegionSelector.pos1;
region = new ConvexPolyhedralRegion(convexPolyhedralRegionSelector.region);
} else {
final Region oldRegion;
try {
oldRegion = oldSelector.getRegion();
} catch (IncompleteRegionException e) {
region = new ConvexPolyhedralRegion(oldSelector.getIncompleteRegion().getWorld());
return;
}
final int minY = oldRegion.getMinimumPoint().getBlockY();
final int maxY = oldRegion.getMaximumPoint().getBlockY();
region = new ConvexPolyhedralRegion(oldRegion.getWorld());
for (final BlockVector2D pt : new ArrayList<BlockVector2D>(oldRegion.polygonize(Integer.MAX_VALUE))) {
region.addVertex(pt.toVector(minY));
region.addVertex(pt.toVector(maxY));
}
learnChanges();
}
}
@Nullable
@Override
public World getWorld() {
return region.getWorld();
}
@Override
public void setWorld(@Nullable World world) {
region.setWorld(world);
}
@Override
public boolean selectPrimary(Vector position, SelectorLimits limits) {
checkNotNull(position);
clear();
pos1 = position.toBlockVector();
return region.addVertex(position);
}
@Override
public boolean selectSecondary(Vector position, SelectorLimits limits) {
checkNotNull(position);
Optional<Integer> vertexLimit = limits.getPolyhedronVertexLimit();
if (vertexLimit.isPresent() && region.getVertices().size() > vertexLimit.get()) {
return false;
}
return region.addVertex(position);
}
@Override
public BlockVector getPrimaryPosition() throws IncompleteRegionException {
return pos1;
}
@Override
public Region getRegion() throws IncompleteRegionException {
if (!region.isDefined()) {
throw new IncompleteRegionException();
}
return region;
}
@Override
public Region getIncompleteRegion() {
return region;
}
@Override
public boolean isDefined() {
return region.isDefined();
}
@Override
public int getArea() {
return region.getArea();
}
@Override
public void learnChanges() {
pos1 = region.getVertices().iterator().next().toBlockVector();
}
@Override
public void clear() {
region.clear();
}
@Override
public String getTypeName() {
return "Convex Polyhedron";
}
@Override
public List<String> getInformationLines() {
List<String> ret = new ArrayList<String>();
ret.add("Vertices: "+region.getVertices().size());
ret.add("Triangles: "+region.getTriangles().size());
return ret;
}
@Override
public void explainPrimarySelection(Actor player, LocalSession session, Vector pos) {
checkNotNull(player);
checkNotNull(session);
checkNotNull(pos);
session.describeCUI(player);
player.print("Started new selection with vertex "+pos+".");
}
@Override
public void explainSecondarySelection(Actor player, LocalSession session, Vector pos) {
checkNotNull(player);
checkNotNull(session);
checkNotNull(pos);
session.describeCUI(player);
player.print("Added vertex " + pos + " to the selection.");
}
@Override
public void explainRegionAdjust(Actor player, LocalSession session) {
checkNotNull(player);
checkNotNull(session);
session.describeCUI(player);
}
@Override
public int getProtocolVersion() {
return 3;
}
@Override
public String getTypeID() {
return "polyhedron";
}
@Override
public void describeCUI(LocalSession session, Actor player) {
checkNotNull(player);
checkNotNull(session);
Collection<Vector> vertices = region.getVertices();
Collection<Triangle> triangles = region.getTriangles();
Map<Vector, Integer> vertexIds = new HashMap<Vector, Integer>(vertices.size());
int lastVertexId = -1;
for (Vector vertex : vertices) {
vertexIds.put(vertex, ++lastVertexId);
session.dispatchCUIEvent(player, new SelectionPointEvent(lastVertexId, vertex, getArea()));
}
for (Triangle triangle : triangles) {
final int[] v = new int[3];
for (int i = 0; i < 3; ++i) {
v[i] = vertexIds.get(triangle.getVertex(i));
}
session.dispatchCUIEvent(player, new SelectionPolygonEvent(v));
}
}
@Override
public String getLegacyTypeID() {
return "cuboid";
}
@Override
public void describeLegacyCUI(LocalSession session, Actor player) {
checkNotNull(player);
checkNotNull(session);
if (isDefined()) {
session.dispatchCUIEvent(player, new SelectionPointEvent(0, region.getMinimumPoint(), getArea()));
session.dispatchCUIEvent(player, new SelectionPointEvent(1, region.getMaximumPoint(), getArea()));
}
}
}