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.g3d; 18 19 import com.badlogic.gdx.Gdx; 20 import com.badlogic.gdx.graphics.Camera; 21 import com.badlogic.gdx.graphics.Color; 22 import com.badlogic.gdx.graphics.GL20; 23 import com.badlogic.gdx.graphics.PerspectiveCamera; 24 import com.badlogic.gdx.graphics.Texture; 25 import com.badlogic.gdx.graphics.VertexAttributes.Usage; 26 import com.badlogic.gdx.graphics.g3d.Material; 27 import com.badlogic.gdx.graphics.g3d.Model; 28 import com.badlogic.gdx.graphics.g3d.ModelBatch; 29 import com.badlogic.gdx.graphics.g3d.ModelInstance; 30 import com.badlogic.gdx.graphics.g3d.attributes.BlendingAttribute; 31 import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute; 32 import com.badlogic.gdx.graphics.g3d.attributes.TextureAttribute; 33 import com.badlogic.gdx.graphics.g3d.utils.MeshPartBuilder; 34 import com.badlogic.gdx.graphics.g3d.utils.ModelBuilder; 35 import com.badlogic.gdx.math.Vector3; 36 import com.badlogic.gdx.tests.utils.GdxTest; 37 38 public class MaterialTest extends GdxTest { 39 40 float angleY = 0; 41 42 Model model, backModel; 43 ModelInstance modelInstance; 44 ModelInstance background; 45 ModelBatch modelBatch; 46 47 TextureAttribute textureAttribute; 48 ColorAttribute colorAttribute; 49 BlendingAttribute blendingAttribute; 50 51 Material material; 52 53 Texture texture; 54 55 Camera camera; 56 57 @Override create()58 public void create () { 59 texture = new Texture(Gdx.files.internal("data/badlogic.jpg"), true); 60 61 // Create material attributes. Each material can contain x-number of attributes. 62 textureAttribute = new TextureAttribute(TextureAttribute.Diffuse, texture); 63 colorAttribute = new ColorAttribute(ColorAttribute.Diffuse, Color.ORANGE); 64 blendingAttribute = new BlendingAttribute(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA); 65 66 ModelBuilder builder = new ModelBuilder(); 67 model = builder.createBox(1, 1, 1, new Material(), Usage.Position | Usage.Normal | Usage.TextureCoordinates); 68 model.manageDisposable(texture); 69 modelInstance = new ModelInstance(model); 70 modelInstance.transform.rotate(Vector3.X, 45); 71 72 material = modelInstance.materials.get(0); 73 74 builder.begin(); 75 MeshPartBuilder mpb = builder.part("back", GL20.GL_TRIANGLES, Usage.Position | Usage.TextureCoordinates, new Material( 76 textureAttribute)); 77 mpb.rect(-2, -2, -2, 2, -2, -2, 2, 2, -2, -2, 2, -2, 0, 0, 1); 78 backModel = builder.end(); 79 background = new ModelInstance(backModel); 80 81 modelBatch = new ModelBatch(); 82 83 camera = new PerspectiveCamera(45, 4, 4); 84 camera.position.set(0, 0, 3); 85 camera.direction.set(0, 0, -1); 86 camera.update(); 87 88 Gdx.input.setInputProcessor(this); 89 } 90 91 private float counter = 0.f; 92 93 @Override render()94 public void render () { 95 counter = (counter + Gdx.graphics.getDeltaTime()) % 1.f; 96 blendingAttribute.opacity = 0.25f + Math.abs(0.5f - counter); 97 98 Gdx.gl.glViewport(0, 0, Gdx.graphics.getBackBufferWidth(), Gdx.graphics.getBackBufferHeight()); 99 Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT); 100 101 modelInstance.transform.rotate(Vector3.Y, 30 * Gdx.graphics.getDeltaTime()); 102 modelBatch.begin(camera); 103 modelBatch.render(background); 104 modelBatch.render(modelInstance); 105 modelBatch.end(); 106 } 107 108 @Override touchUp(int screenX, int screenY, int pointer, int button)109 public boolean touchUp (int screenX, int screenY, int pointer, int button) { 110 111 if (!material.has(TextureAttribute.Diffuse)) 112 material.set(textureAttribute); 113 else if (!material.has(ColorAttribute.Diffuse)) 114 material.set(colorAttribute); 115 else if (!material.has(BlendingAttribute.Type)) 116 material.set(blendingAttribute); 117 else 118 material.clear(); 119 120 return super.touchUp(screenX, screenY, pointer, button); 121 } 122 123 @Override dispose()124 public void dispose () { 125 model.dispose(); 126 backModel.dispose(); 127 modelBatch.dispose(); 128 } 129 } 130
