Java tutorial
/******************************************************************************* * Copyright 2014 Rafael Garcia Moreno. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. ******************************************************************************/ package com.bladecoder.engineeditor.scneditor; import java.util.ArrayList; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.GL20; import com.badlogic.gdx.graphics.OrthographicCamera; import com.badlogic.gdx.graphics.glutils.ShapeRenderer; import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType; import com.badlogic.gdx.math.Matrix4; import com.badlogic.gdx.math.Polygon; import com.badlogic.gdx.math.Rectangle; import com.bladecoder.engine.model.AnchorActor; import com.bladecoder.engine.model.BaseActor; import com.bladecoder.engine.model.InteractiveActor; import com.bladecoder.engine.model.ObstacleActor; import com.bladecoder.engine.model.Scene; import com.bladecoder.engine.model.SpriteActor; import com.bladecoder.engine.model.World; import com.bladecoder.engine.polygonalpathfinder.NavNodePolygonal; import com.bladecoder.engine.util.EngineLogger; public class CanvasDrawer { public static final float CORNER_DIST = 20; private static final Color MOUSESELECTION_FILL_COLOR = new Color(0.2f, 0.2f, 0.8f, 0.4f); private static final Color MOUSESELECTION_STROKE_COLOR = new Color(0.2f, 0.2f, 0.8f, 1f); private final ShapeRenderer drawer = new ShapeRenderer(); private OrthographicCamera camera; public CanvasDrawer() { } public void setCamera(OrthographicCamera camera) { this.camera = camera; } public void drawBBoxActors(Scene scn) { drawer.setProjectionMatrix(camera.combined); drawer.setTransformMatrix(new Matrix4()); drawer.begin(ShapeType.Line); for (BaseActor a : scn.getActors().values()) { Polygon p = a.getBBox(); if (p == null) { EngineLogger.error("ERROR DRAWING BBOX FOR: " + a.getId()); } // Rectangle r = a.getBBox().getBoundingRectangle(); if (a instanceof ObstacleActor) { drawer.setColor(Scene.OBSTACLE_COLOR); drawer.polygon(p.getTransformedVertices()); } else if (a instanceof InteractiveActor) { InteractiveActor iActor = (InteractiveActor) a; if (!scn.getLayer(iActor.getLayer()).isVisible()) continue; drawer.setColor(Scene.ACTOR_BBOX_COLOR); if (p.getTransformedVertices().length > 2) drawer.polygon(p.getTransformedVertices()); } else if (a instanceof AnchorActor) { drawer.setColor(Scene.ANCHOR_COLOR); drawer.line(p.getX() - Scene.ANCHOR_RADIUS, p.getY(), p.getX() + Scene.ANCHOR_RADIUS, p.getY()); drawer.line(p.getX(), p.getY() - Scene.ANCHOR_RADIUS, p.getX(), p.getY() + Scene.ANCHOR_RADIUS); } // drawer.rect(r.getX(), r.getY(), r.getWidth(), r.getHeight()); } drawer.end(); } public void drawBBoxWalkZone(Scene scn, boolean lineOfSight) { if (scn.getPolygonalNavGraph() != null) { drawer.setProjectionMatrix(camera.combined); drawer.setTransformMatrix(new Matrix4()); drawer.begin(ShapeType.Line); drawer.setColor(Scene.WALKZONE_COLOR); drawer.polygon(scn.getPolygonalNavGraph().getWalkZone().getTransformedVertices()); // DRAW LINEs OF SIGHT if (lineOfSight) { drawer.setColor(Color.WHITE); ArrayList<NavNodePolygonal> nodes = scn.getPolygonalNavGraph().getGraphNodes(); for (NavNodePolygonal n : nodes) { for (NavNodePolygonal n2 : n.neighbors) { drawer.line(n.x, n.y, n2.x, n2.y); } } } drawer.end(); } } public void drawSelectedActor(BaseActor selectedActor) { // Gdx.gl20.glLineWidth(3); Gdx.gl20.glEnable(GL20.GL_BLEND); // Gdx.gl20.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA); drawer.setProjectionMatrix(camera.combined); // drawer.setTransformMatrix(new Matrix4()); if (selectedActor instanceof AnchorActor) { drawer.begin(ShapeRenderer.ShapeType.Line); drawer.setColor(MOUSESELECTION_STROKE_COLOR); drawer.rect(selectedActor.getX() - Scene.ANCHOR_RADIUS, selectedActor.getY() - Scene.ANCHOR_RADIUS, Scene.ANCHOR_RADIUS * 2, Scene.ANCHOR_RADIUS * 2); drawer.end(); } else { Rectangle rect = selectedActor.getBBox().getBoundingRectangle(); drawer.begin(ShapeRenderer.ShapeType.Filled); drawer.setColor(MOUSESELECTION_FILL_COLOR); drawer.rect(rect.x, rect.y, rect.width, rect.height); drawer.end(); drawer.begin(ShapeRenderer.ShapeType.Line); drawer.setColor(MOUSESELECTION_STROKE_COLOR); drawer.rect(rect.x, rect.y, rect.width, rect.height); // DRAW SELECTION BOUNDS if ((!(selectedActor instanceof SpriteActor) || !((SpriteActor) selectedActor).isBboxFromRenderer()) && !(selectedActor instanceof AnchorActor)) { float verts[] = selectedActor.getBBox().getTransformedVertices(); for (int i = 0; i < verts.length; i += 2) drawer.rect(verts[i] - CORNER_DIST / 2, verts[i + 1] - CORNER_DIST / 2, CORNER_DIST, CORNER_DIST); } drawer.end(); } } public void drawBGBounds() { // Gdx.gl20.glEnable(GL20.GL_BLEND); // Gdx.gl20.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA); drawer.setProjectionMatrix(camera.combined); drawer.setTransformMatrix(new Matrix4()); drawer.begin(ShapeRenderer.ShapeType.Line); drawer.setColor(Color.MAGENTA); drawer.rect(0, 0, World.getInstance().getWidth(), World.getInstance().getHeight()); drawer.end(); } public void drawPolygonVertices(Polygon p, Color c) { float verts[] = p.getTransformedVertices(); drawer.setProjectionMatrix(camera.combined); drawer.setTransformMatrix(new Matrix4()); drawer.begin(ShapeRenderer.ShapeType.Line); drawer.setColor(c); for (int i = 0; i < verts.length; i += 2) drawer.rect(verts[i] - CORNER_DIST / 2, verts[i + 1] - CORNER_DIST / 2, CORNER_DIST, CORNER_DIST); drawer.end(); } }