Android开发从入门到精通（随书光盘）【源码】第13章

package dfzy.aabb; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import javax.microedition.khronos.egl.EGLConfig; import javax.microedition.khronos.opengles.GL10; import dfzy.aabb.R; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.opengl.GLSurfaceView; import android.opengl.GLU; import android.opengl.GLUtils; public class ddd extends GLSurfaceView{ private SceneRenderer mRenderer;//场景渲染器 float cx=0;//摄像机x位置 float cy=10;//摄像机y位置 float cz=10;//摄像机z位置 float tx=0;////目标点x位置 float ty=0;//目标点y位置 float tz=0;//目标点z位置 final float UNIT_Z=2.0f;//移动坐标系的位置 final float UNIT_OFFSET_X=4.0f;//椎体X轴位置 final float UNIT_OFFSET_Y=5.0f;//椎体Y轴位置 final float UNIT_OFFSET_Z=0.5f;//椎体Z轴位置 ArrayList<ConAABB> al;//椎体控制列表 Threadaabb gt;//运动线程 public ddd(Context context) { super(context); // TODO Auto-generated constructor stub 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 al=new ArrayList<ConAABB>();//创建对象 } private class SceneRenderer implements GLSurfaceView.Renderer { int ZTId;//椎体纹理ID int ZTId_T;//2椎体纹理ID Zhui zhuiTi;//声明椎体 Zhui zhuiTi_T;//声明另一个椎体 ConAABB ct;//控制椎体运动 @Override public void onDrawFrame(GL10 gl) { // TODO Auto-generated method stub //设置为打开背面剪裁 gl.glEnable(GL10.GL_CULL_FACE); //设置着色模型为平滑着色 gl.glShadeModel(GL10.GL_SMOOTH); //清除颜色缓存于深度缓存 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(); //设置camera位置 GLU.gluLookAt ( gl, cx, //摄像机的X位置 cy, //摄像机的Y位置 cz, //摄像机的Z位置 tx, //目标点X ty, //目标点Y tz, //目标点Z 0, //UP位置 1, 0 ); gl.glPushMatrix(); gl.glTranslatef(0, 0, -UNIT_Z); for(int i=0;i<al.size();i++) { al.get(i).drawSelf(gl);//绘制椎体 } gl.glPopMatrix(); } @Override public void onSurfaceChanged(GL10 gl, int width, int height) { // TODO Auto-generated method stub //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); } @Override public void onSurfaceCreated(GL10 gl, EGLConfig config) { // TODO Auto-generated method stub //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(0.8f,0.8f,0.8f,0.8f); //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); ZTId=initTexture(gl,R.drawable.gr);//初始化纹理ID ZTId_T=initTexture(gl,R.drawable.bottom); zhuiTi=new Zhui(ZTId,1,2,1);//创建椎体 zhuiTi_T=new Zhui(ZTId_T,1,1,1);//创建椎体 // ct=new Control(zhuiTi,0,0,-7*UNIT_OFFSET_Z,0.0f,0.0f,0.0f);//Z轴上的障碍物 // al.add(ct); ct=new ConAABB(zhuiTi_T,UNIT_OFFSET_X,0,-UNIT_OFFSET_Z,0.0f,0.0f,0.0f);//X轴上的障碍物 al.add(ct); // ct=new Control(zhuiTi,0,UNIT_OFFSET_Y,-UNIT_OFFSET_Z,0.0f,0.0f,0.0f);//Y轴上的障碍物 // al.add(ct); ct=new ConAABB(zhuiTi_T,0,0,-UNIT_OFFSET_Z,1.0f,0.0f,0.0f);//创建椎体 al.add(ct);//加入列表中 ct=new ConAABB(zhuiTi_T,-UNIT_OFFSET_X,0,-UNIT_OFFSET_Z,0.0f,0.0f,0.0f);//X轴上的障碍物 al.add(ct); // ct=new Control(zhuiTi,0,-UNIT_OFFSET_Y,-UNIT_OFFSET_Z,0.0f,0.0f,0.0f);//Y轴上的障碍物 // al.add(ct); // ct=new Control(zhuiTi,0,0,4*UNIT_OFFSET_Z,0.0f,0.0f,0.0f);//Z轴上的障碍物 // al.add(ct);//加入列表中 gt=new Threadaabb(al);//创建运动线程对象 gt.start();//开启线程 } } //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);//提供未使用的纹理对象名称 int textureId=textures[0]; gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId);//创建和使用纹理对象 gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER,GL10.GL_NEAREST);//指定放大缩小过滤方法 gl.glTexParameterf(GL10.GL_TEXTURE_2D,GL10.GL_TEXTURE_MAG_FILTER,GL10.GL_LINEAR); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S,GL10.GL_CLAMP_TO_EDGE); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T,GL10.GL_CLAMP_TO_EDGE); InputStream is = this.getResources().openRawResource(drawableId); Bitmap bitmapTmp; try { bitmapTmp = BitmapFactory.decodeStream(is); } finally { try { is.close(); } catch(IOException e) { e.printStackTrace(); } } GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmapTmp, 0);//定义二维纹理 bitmapTmp.recycle(); return textureId; } }