1 /******************************************************************************* 2 * Copyright 2011 See AUTHORS file. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 ******************************************************************************/ 16 17 package com.badlogic.gdx.tests; 18 19 import java.util.Random; 20 21 import com.badlogic.gdx.Gdx; 22 import com.badlogic.gdx.Input.Keys; 23 import com.badlogic.gdx.graphics.Camera; 24 import com.badlogic.gdx.graphics.Color; 25 import com.badlogic.gdx.graphics.GL20; 26 import com.badlogic.gdx.graphics.PerspectiveCamera; 27 import com.badlogic.gdx.graphics.Texture; 28 import com.badlogic.gdx.graphics.g2d.BitmapFont; 29 import com.badlogic.gdx.graphics.g2d.SpriteBatch; 30 import com.badlogic.gdx.graphics.g2d.TextureRegion; 31 import com.badlogic.gdx.graphics.g3d.Model; 32 import com.badlogic.gdx.graphics.g3d.ModelBatch; 33 import com.badlogic.gdx.graphics.g3d.ModelInstance; 34 import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute; 35 import com.badlogic.gdx.graphics.g3d.loader.ObjLoader; 36 import com.badlogic.gdx.math.Vector3; 37 import com.badlogic.gdx.tests.utils.GdxTest; 38 39 public class ProjectTest extends GdxTest { 40 41 Model sphere; 42 Camera cam; 43 SpriteBatch batch; 44 BitmapFont font; 45 ModelInstance[] instances = new ModelInstance[100]; 46 ModelBatch modelBatch; 47 Vector3 tmp = new Vector3(); 48 TextureRegion logo; 49 50 @Override 51 public void create () { 52 ObjLoader objLoader = new ObjLoader(); 53 sphere = objLoader.loadModel(Gdx.files.internal("data/sphere.obj")); 54 sphere.materials.get(0).set(new ColorAttribute(ColorAttribute.Diffuse, Color.WHITE)); 55 cam = new PerspectiveCamera(45, Gdx.graphics.getWidth(), Gdx.graphics.getHeight()); 56 cam.far = 200; 57 Random rand = new Random(); 58 for (int i = 0; i < instances.length; i++) { 59 instances[i] = new ModelInstance(sphere, rand.nextFloat() * 100 - rand.nextFloat() * 100, rand.nextFloat() * 100 60 - rand.nextFloat() * 100, rand.nextFloat() * -100 - 3); 61 } 62 batch = new SpriteBatch(); 63 font = new BitmapFont(); 64 logo = new TextureRegion(new Texture(Gdx.files.internal("data/badlogicsmall.jpg"))); 65 modelBatch = new ModelBatch(); 66 } 67 68 @Override 69 public void render () { 70 71 Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT); 72 Gdx.gl.glEnable(GL20.GL_DEPTH_TEST); 73 74 cam.update(); 75 76 modelBatch.begin(cam); 77 78 int visible = 0; 79 for (int i = 0; i < instances.length; i++) { 80 instances[i].transform.getTranslation(tmp); 81 if (cam.frustum.sphereInFrustum(tmp, 1)) { 82 ((ColorAttribute)instances[i].materials.get(0).get(ColorAttribute.Diffuse)).color.set(Color.WHITE); 83 visible++; 84 } else { 85 ((ColorAttribute)instances[i].materials.get(0).get(ColorAttribute.Diffuse)).color.set(Color.RED); 86 } 87 modelBatch.render(instances[i]); 88 } 89 modelBatch.end(); 90 91 if (Gdx.input.isKeyPressed(Keys.A)) cam.rotate(20 * Gdx.graphics.getDeltaTime(), 0, 1, 0); 92 if (Gdx.input.isKeyPressed(Keys.D)) cam.rotate(-20 * Gdx.graphics.getDeltaTime(), 0, 1, 0); 93 94 Gdx.gl.glDisable(GL20.GL_DEPTH_TEST); 95 batch.begin(); 96 for (int i = 0; i < instances.length; i++) { 97 instances[i].transform.getTranslation(tmp); 98 cam.project(tmp); 99 if (tmp.z < 0) continue; 100 batch.draw(logo, tmp.x, tmp.y); 101 } 102 batch.end(); 103 } 104 } 105
