3D android_地球源代码

package wyf.sj; import java.io.IOException; import java.io.InputStream; import javax.microedition.khronos.egl.EGLConfig; import javax.microedition.khronos.opengles.GL10; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.opengl.GLSurfaceView; import android.opengl.GLUtils; import android.view.MotionEvent; public class MySurfaceView extends GLSurfaceView{ private final float TOUCH_SCALE_FACTOR = 180.0f/320;//角度缩放比例 private SceneRenderer mRenderer;//场景渲染器 private float mPreviousY;//上次的触控位置Y坐标 private float mPreviousX;//上次的触控位置Y坐标 public int earthTextureId;//纹理名称ID public int moonTextureId;//纹理名称ID public MySurfaceView(Context context) { super(context); mRenderer = new SceneRenderer(); //创建场景渲染器 setRenderer(mRenderer); //设置渲染器 setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY);//设置渲染模式为主动渲染 } //触摸事件回调方法 @Override public boolean onTouchEvent(MotionEvent e) { float y = e.getY(); float x = e.getX(); switch (e.getAction()) { case MotionEvent.ACTION_MOVE: float dy = y - mPreviousY;//计算触控笔Y位移 float dx = x - mPreviousX;//计算触控笔Y位移 mRenderer.earth.mAngleX += dy * TOUCH_SCALE_FACTOR;//设置沿x轴旋转角度 mRenderer.earth.mAngleZ += dx * TOUCH_SCALE_FACTOR;//设置沿z轴旋转角度 requestRender();//重绘画面 } mPreviousY = y;//记录触控笔位置 mPreviousX = x;//记录触控笔位置 return true; } private class SceneRenderer implements GLSurfaceView.Renderer { Ball earth; Ball moon; Celestial celestialSmall;//小星星星空半球 Celestial celestialBig;//大星星星空半球 public void onDrawFrame(GL10 gl) { //清除颜色缓存 gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); //设置当前矩阵为模式矩阵 gl.glMatrixMode(GL10.GL_MODELVIEW); //设置当前矩阵为单位矩阵 gl.glLoadIdentity(); gl.glTranslatef(0, 0f, -3.6f); gl.glEnable(GL10.GL_LIGHTING);//允许光照 gl.glPushMatrix();//保护变换矩阵现场 gl.glMaterialf(GL10.GL_FRONT_AND_BACK, GL10.GL_SHININESS, 3.5f); earth.drawSelf(gl);//绘制地球 gl.glTranslatef(0, 0f, 1.5f); gl.glMaterialf(GL10.GL_FRONT_AND_BACK, GL10.GL_SHININESS, 1.0f); moon.drawSelf(gl);//绘制月球 gl.glPopMatrix();//恢复变换矩阵现场 gl.glDisable(GL10.GL_LIGHTING);//不允许光照 //绘制星空 gl.glPushMatrix();//保护变换矩阵现场 gl.glTranslatef(0, -8.0f, 0.0f); celestialSmall.drawSelf(gl); celestialBig.drawSelf(gl); gl.glPopMatrix();//恢复变换矩阵现场 } public void onSurfaceChanged(GL10 gl, int width, int height) { //设置视窗大小及位置 gl.glViewport(0, 0, width, height); //设置当前矩阵为投影矩阵 gl.glMatrixMode(GL10.GL_PROJECTION); //设置当前矩阵为单位矩阵 gl.glLoadIdentity(); //计算透视投影的比例 float ratio = (float) width / height; //调用此方法计算产生透视投影矩阵 gl.glFrustumf(-ratio*0.5f, ratio*0.5f, -0.5f, 0.5f, 1, 100); } public void onSurfaceCreated(GL10 gl, EGLConfig config) { //关闭抗抖动 gl.glDisable(GL10.GL_DITHER); //设置特定Hint项目的模式，这里为设置为使用快速模式 gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT,GL10.GL_FASTEST); //设置屏幕背景色黑色RGBA gl.glClearColor(0,0,0,0); //设置着色模型为平滑着色 gl.glShadeModel(GL10.GL_SMOOTH); //启用深度测试 gl.glEnable(GL10.GL_DEPTH_TEST); //设置为打开背面剪裁 gl.glEnable(GL10.GL_CULL_FACE); gl.glEnable(GL10.GL_LIGHTING);//允许光照 initSunLight(gl);//初始化太阳光源 initMaterial(gl);//初始化材质 //初始化纹理 earthTextureId=initTexture(gl,R.drawable.earth); moonTextureId=initTexture(gl,R.drawable.moon); earth=new Ball(6,earthTextureId); moon=new Ball(2,moonTextureId); //创建星空 celestialSmall=new Celestial(0,0,1,0,750); celestialBig=new Celestial(0,0,2,0,200); //开启一个线程自动旋转地球与月球 new Thread() { public void run() { while(true) { mRenderer.earth.mAngleY+=2*TOUCH_SCALE_FACTOR;//球沿Y轴转动 mRenderer.moon.mAngleY+=2*TOUCH_SCALE_FACTOR;//球沿Y轴转动 requestRender();//重绘画面 try { Thread.sleep(50);//休息10ms再重绘 } catch(Exception e) { e.printStackTrace(); } } } }.start(); new Thread() {//定时转动星空的线程 public void run() { while(true) { celestialSmall.yAngle+=0.5; if(celestialSmall.yAngle>=360) { celestialSmall.yAngle=0; } celestialBig.yAngle+=0.5; if(celestialBig.yAngle>=360) { celestialBig.yAngle=0; } try { Thread.sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } } } }.start(); } } //初始化太阳光源 private void initSunLight(GL10 gl) { gl.glEnable(GL10.GL_LIGHT0);//打开0号灯 //环境光设置 float[] ambientParams={0.05f,0.05f,0.025f,1.0f};//光参数 RGBA gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, ambientParams,0); //散射光设置 float[] diffuseParams={1f,1f,0.5f,1.0f};//光参数 RGBA gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, diffuseParams,0); //反射光设置 float[] specularParams={1f,1f,0.5f,1.0f};//光参数 RGBA gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_SPECULAR, specularParams,0); //设定光源的位置 float[] positionParamsGreen={-14.14f,8.28f,6f,0};//最后的0表示使用定向光 gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, positionParamsGreen,0); } //初始化材质 private void initMaterial(GL10 gl) {//材质为白色时什么颜色的光照在上面就将体现出什么颜色 //环境光为白色材质 float ambientMaterial[] = {0.7f, 0.7f, 0.7f, 1.0f}; gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, ambientMaterial,0); //散射光为白色材质 float diffuseMaterial[] = {1.0f, 1.0f, 1.0f, 1.0f}; gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, diffuseMaterial,0); //高光材质为白色 float specularMaterial[] = {1f, 1f, 1f, 1.0f}; gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_SPECULAR, specularMaterial,0); } //初始化纹理 public int initTexture(GL10 gl,int drawableId) { //生成纹理ID int[] textures = new int[1]; gl.glGenTextures(1, textures, 0); int textureId=textures[0]; gl.glBindTexture(GL10.GL_TEXT