1 package com.mygdx.game;
 2
 3 import com.badlogic.gdx.ApplicationAdapter;
 4 import com.badlogic.gdx.Gdx;
 5 import com.badlogic.gdx.graphics.*;
 6 import com.badlogic.gdx.graphics.g3d.*;
 7 import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute;
 8 import com.badlogic.gdx.graphics.g3d.environment.DirectionalLight;
 9 import com.badlogic.gdx.graphics.g3d.utils.CameraInputController;
10 import com.badlogic.gdx.graphics.g3d.utils.ModelBuilder;
11
12 public class MyGdxGame extends ApplicationAdapter {
13     public Environment environment;//可以包含点光源集合和线光源集合
14     public PerspectiveCamera cam;//3D视角
15     public Model model;//模型
16     public ModelInstance instance;//模型实例
17     public ModelBatch modelBatch;
18
19     public CameraInputController camController;//视角控制器
20
21     @Override
22     public void create () {
23         environment = new Environment();
24         environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f));//环境光
25         environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));//直线光源
26
27         modelBatch = new ModelBatch();
28         cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());//67可以理解成一个定值，视角宽度（67度）
29         cam.position.set(10f, 10f, 10f);
30         cam.lookAt(0,0,0);
31         cam.near = 1f;
32         cam.far = 300f;
33         cam.update();
34
35         camController = new CameraInputController(cam);
36         Gdx.input.setInputProcessor(camController);
37
38         ModelBuilder modelBuilder = new ModelBuilder();//Helper class
39         model = modelBuilder.createBox(5f, 5f, 5f,
40                 new Material(ColorAttribute.createDiffuse(Color.GREEN)),
41                 VertexAttributes.Usage.Position | VertexAttributes.Usage.Normal);
42         instance = new ModelInstance(model);
43
44
45
46     }
47
48     @Override
49     public void render () {
50         camController.update();
51         Gdx.gl.glViewport(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
52         Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
53
54         modelBatch.begin(cam);
55         modelBatch.render(instance,environment);
56         modelBatch.end();
57     }
58
59     @Override
60     public void dispose() {
61         model.dispose();
62         super.dispose();
63     }
64 }