邢台县建设局网站,网站流量查询最准的,冬奥会建设官方网站,网站开发需要的技术国内的libGDX文章很少#xff0c;特别是libGDX实现灯光效果#xff0c;所以就开始总结灯光效果的实现 绿色的框 是为了方便看到Body位置#xff0c;使用Box2DDebugRenderer渲染的 工欲善其事#xff0c;必先利其器#xff0c;工具集合 gdx-setup.jar
1. 从libGDX官网下载…国内的libGDX文章很少特别是libGDX实现灯光效果所以就开始总结灯光效果的实现 绿色的框 是为了方便看到Body位置使用Box2DDebugRenderer渲染的 工欲善其事必先利其器工具集合 gdx-setup.jar
1. 从libGDX官网下载项目生成工具
https://libgdx.com/wiki/start/setup
2.配置项目 Output folder和Android SDK设置自己的扩展库选择Box2d和Box2dlights,然后生成项目
3.配置ApplicationConfiguration初始化ApplicationListener
由于是演示项目所以直接使用系统创建好的Activity实现类
public class AndroidLauncher extends AndroidApplication {Overrideprotected void onCreate (Bundle savedInstanceState) {super.onCreate(savedInstanceState);AndroidApplicationConfiguration config new AndroidApplicationConfiguration();config.a 8;config.r 8;config.g 8;config.b 8;initialize(new MyGdxGame(), config);}
}4.创建物理模拟环境
public class MyGdxGame extends ApplicationAdapter {private World mWorld;private Box2DDebugRenderer mWorldDebugger;private ArrayList bodys new ArrayListBody();private OrthographicCamera camera;private ExtendViewport viewport;private float accumulator 0f;private RayHandler rayHandler;private Body body;private static final float TIME_STEP 1 / 120f;private static final int VELOCITY_ITERATIONS 6;private static final int POSITION_ITERATIONS 2;private int viewportWidth;private int viewportHeight;Overridepublic void create() {super.create();// 1.创建worldmWorld new World(new Vector2(0f, -10f), true);// 2.创建窗口大小给camera用viewportWidth Gdx.graphics.getWidth();viewportHeight Gdx.graphics.getHeight();// 3.初始化正交投影相机initCamera();// 这个是为了查看bodymWorldDebugger new Box2DDebugRenderer();// 创建Body为了让点光源依附于他(可以不设置点光源可以单独存在)makeBody();// 创建灯光处理核心rayHandler new RayHandler(mWorld);makePointLight();}private void makePointLight() {// 创建点光源 // rays100 越大约逼真但是会降低性能// distance150 光照扩展的范围PointLight light new PointLight(rayHandler, 100, Color.RED, 150f, 0, 0);light.setSoftnessLength(0); //关闭软阴影light.attachToBody(body, 0.5f, 0.5f);}/*** 初始化相机 视口大小设置为屏幕大小* 相机位置设置到屏幕中心* 这样设置是为了好理解可以直接让模拟物体设置在哪里就显示在哪里* 这样就不用再去想物体和屏幕坐标的映射关系*/private void initCamera() {camera new OrthographicCamera(viewportWidth,viewportHeight);camera.position.x Gdx.graphics.getWidth() / 2f;camera.position.y Gdx.graphics.getHeight() / 2f;camera.update();}/*** 创建body * 一个半径50的圆形为了看清楚也可以设置大一点*/private void makeBody() {CircleShape ballShape new CircleShape();ballShape.setRadius(50f);FixtureDef fixtureDef new FixtureDef();fixtureDef.shape ballShape;BodyDef bodyDef new BodyDef();bodyDef.type BodyDef.BodyType.StaticBody;// 这里也是把这个圆形放到屏幕中心了圆形是以圆心为绘制起点画圆bodyDef.position.x viewportWidth / 2f;bodyDef.position.y viewportHeight / 2f;body mWorld.createBody(bodyDef);body.createFixture(fixtureDef);ballShape.dispose();}}5.render
public class MyGdxGame extends ApplicationAdapter {Overridepublic void render() {super.render();// 1.更新相机camera.update();// 2.清理绘制区域ScreenUtils.clear(Color.CLEAR);Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);// 3.时间步模拟(也可以按照官网的做固定时间步 1/60)doPhysicsStep(Gdx.graphics.getDeltaTime());// 4.给rayHandler设置matrixrayHandler.setCombinedMatrix(camera);// 5.渲染灯光rayHandler.updateAndRender();// 6.渲染body(非必须)mWorldDebugger.render(mWorld, camera.combined);}private void doPhysicsStep(float deltaTime) {// fixed time step// max frame time to avoid spiral of death (on slow devices)float frameTime Math.min(deltaTime, 0.25f);accumulator frameTime;while (accumulator TIME_STEP) {mWorld.step(TIME_STEP,VELOCITY_ITERATIONS,POSITION_ITERATIONS);accumulator - TIME_STEP;}}
}这样一个点光源就做好了我的demo是让他附着在Body上这样Body移动他就可以跟着动
