/*
* 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.*;
import com.sk89q.worldedit.extension.platform.Actor;
import com.sk89q.worldedit.internal.cui.CUIRegion;
import com.sk89q.worldedit.internal.cui.SelectionMinMaxEvent;
import com.sk89q.worldedit.internal.cui.SelectionPoint2DEvent;
import com.sk89q.worldedit.internal.cui.SelectionShapeEvent;
import com.sk89q.worldedit.regions.Polygonal2DRegion;
import com.sk89q.worldedit.regions.Region;
import com.sk89q.worldedit.regions.RegionSelector;
import com.sk89q.worldedit.regions.selector.limit.SelectorLimits;
import com.sk89q.worldedit.world.World;
import javax.annotation.Nullable;
import java.util.Collections;
import java.util.List;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Creates a {@code Polygonal2DRegion} from a user's selections.
*/
public class Polygonal2DRegionSelector extends com.sk89q.worldedit.regions.Polygonal2DRegionSelector implements RegionSelector, CUIRegion {
private transient BlockVector pos1;
private transient Polygonal2DRegion region;
/**
* Create a new selector with a {@code null} world.
*/
public Polygonal2DRegionSelector() {
this((World) null);
}
/**
* Create a new selector with the given world.
*
* @param world the world
*/
public Polygonal2DRegionSelector(@Nullable World world) {
region = new Polygonal2DRegion(world);
}
/**
* Create a new selector from another one.
*
* @param oldSelector the old selector
*/
public Polygonal2DRegionSelector(RegionSelector oldSelector) {
this(checkNotNull(oldSelector).getIncompleteRegion().getWorld());
if (oldSelector instanceof Polygonal2DRegionSelector) {
final Polygonal2DRegionSelector polygonal2DRegionSelector = (Polygonal2DRegionSelector) oldSelector;
pos1 = polygonal2DRegionSelector.pos1;
region = new Polygonal2DRegion(polygonal2DRegionSelector.region);
} else {
final Region oldRegion;
try {
oldRegion = oldSelector.getRegion();
} catch (IncompleteRegionException e) {
return;
}
final int minY = oldRegion.getMinimumPoint().getBlockY();
final int maxY = oldRegion.getMaximumPoint().getBlockY();
List<BlockVector2D> points = oldRegion.polygonize(Integer.MAX_VALUE);
pos1 = points.get(0).toVector(minY).toBlockVector();
region = new Polygonal2DRegion(oldRegion.getWorld(), points, minY, maxY);
}
}
/**
* @deprecated cast {@code world} to {@link World}
*/
@Deprecated
public Polygonal2DRegionSelector(@Nullable LocalWorld world, List<BlockVector2D> points, int minY, int maxY) {
this((World) world, points, minY, maxY);
}
/**
* Create a new selector.
*
* @param world the world
* @param points a list of points
* @param minY the minimum Y
* @param maxY the maximum Y
*/
public Polygonal2DRegionSelector(@Nullable World world, List<BlockVector2D> points, int minY, int maxY) {
checkNotNull(points);
final BlockVector2D pos2D = points.get(0);
pos1 = new BlockVector(pos2D.getX(), minY, pos2D.getZ());
region = new Polygonal2DRegion(world, points, minY, maxY);
}
@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) {
if (position.equals(pos1)) {
return false;
}
pos1 = position.toBlockVector();
region = new Polygonal2DRegion(region.getWorld());
region.addPoint(position);
region.expandY(position.getBlockY());
return true;
}
@Override
public boolean selectSecondary(Vector position, SelectorLimits limits) {
if (region.size() > 0) {
final List<BlockVector2D> points = region.getPoints();
final BlockVector2D lastPoint = points.get(region.size() - 1);
if (lastPoint.getBlockX() == position.getBlockX() && lastPoint.getBlockZ() == position.getBlockZ()) {
return false;
}
Optional<Integer> vertexLimit = limits.getPolygonVertexLimit();
if (vertexLimit.isPresent() && points.size() > vertexLimit.get()) {
return false;
}
}
region.addPoint(position);
region.expandY(position.getBlockY());
return true;
}
@Override
public void explainPrimarySelection(Actor player, LocalSession session, Vector pos) {
player.print("Starting a new polygon at " + pos + ".");
session.dispatchCUIEvent(player, new SelectionShapeEvent(getTypeID()));
session.dispatchCUIEvent(player, new SelectionPoint2DEvent(0, pos, getArea()));
session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMinimumY(), region.getMaximumY()));
}
@Override
public void explainSecondarySelection(Actor player, LocalSession session, Vector pos) {
player.print("Added point #" + region.size() + " at " + pos + ".");
session.dispatchCUIEvent(player, new SelectionPoint2DEvent(region.size() - 1, pos, getArea()));
session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMinimumY(), region.getMaximumY()));
}
@Override
public void explainRegionAdjust(Actor player, LocalSession session) {
session.dispatchCUIEvent(player, new SelectionShapeEvent(getTypeID()));
describeCUI(session, player);
}
@Override
public BlockVector getPrimaryPosition() throws IncompleteRegionException {
if (pos1 == null) {
throw new IncompleteRegionException();
}
return pos1;
}
@Override
public Polygonal2DRegion getRegion() throws IncompleteRegionException {
if (!isDefined()) {
throw new IncompleteRegionException();
}
return region;
}
@Override
public Polygonal2DRegion getIncompleteRegion() {
return region;
}
@Override
public boolean isDefined() {
return region.size() > 2;
}
@Override
public void learnChanges() {
BlockVector2D pt = region.getPoints().get(0);
pos1 = new BlockVector(pt.getBlockX(), region.getMinimumPoint().getBlockY(), pt.getBlockZ());
}
@Override
public void clear() {
pos1 = null;
region = new Polygonal2DRegion(region.getWorld());
}
@Override
public String getTypeName() {
return "2Dx1D polygon";
}
@Override
public List<String> getInformationLines() {
return Collections.singletonList("# points: " + region.size());
}
@Override
public int getArea() {
return region.getArea();
}
/**
* Get the number of points.
*
* @return the number of points
*/
@Override
public int getPointCount() {
return region.getPoints().size();
}
@Override
public void describeCUI(LocalSession session, Actor player) {
final List<BlockVector2D> points = region.getPoints();
for (int id = 0; id < points.size(); id++) {
session.dispatchCUIEvent(player, new SelectionPoint2DEvent(id, points.get(id), getArea()));
}
session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.getMinimumY(), region.getMaximumY()));
}
@Override
public void describeLegacyCUI(LocalSession session, Actor player) {
describeCUI(session, player);
}
@Override
public int getProtocolVersion() {
return 0;
}
@Override
public String getTypeID() {
return "polygon2d";
}
@Override
public String getLegacyTypeID() {
return "polygon2d";
}
}