Sample9_4.zip_sample9_拾取_模型贴图

package com.bn.Sample9_4; import java.io.IOException; import java.io.InputStream; import android.opengl.GLSurfaceView; import android.opengl.GLES20; import android.opengl.GLUtils; import android.opengl.Matrix; import android.view.MotionEvent; import javax.microedition.khronos.egl.EGLConfig; import javax.microedition.khronos.opengles.GL10; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; 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 boolean first=true; private int w=0,h=0; private float mPreviousY;//上次的触控位置Y坐标 private float mPreviousX;//上次的触控位置X坐标 int textureId1=0;//系统分配的纹理id public MySurfaceView(Context context) { super(context); this.setEGLContextClientVersion(2); //设置使用OPENGL ES2.0 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(); System.out.printf("the vertex you touch is \n", null); System.out.printf("%f %f \n", x,y); 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X位移 mRenderer.xAngl += dy * TOUCH_SCALE_FACTOR;//设置沿z轴旋转角度 if(mRenderer.xAngl>90&&mRenderer.xAngl<270) mRenderer.yAngle += dx * TOUCH_SCALE_FACTOR;//设置沿x轴旋转角 else mRenderer.yAngle -= dx * TOUCH_SCALE_FACTOR;//设置沿x轴旋转角 if(mRenderer.yAngle>360) mRenderer.yAngle-=360; else if(mRenderer.yAngle<0) mRenderer.yAngle+=360; if(mRenderer.xAngl >360) mRenderer.xAngl -=360; else if(mRenderer.xAngl<0) mRenderer.xAngl+=360; 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 { float yAngle=0;//绕Y轴旋转的角度 float xAngl=0; //从指定的obj文件中加载对象 LoadedObjectVertexNormalTexture lovo; NewVertexs nv;//拾取点的结构 public void onDrawFrame(GL10 gl) { //清除深度缓冲与颜色缓冲 GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT); double xAn = Math.toRadians(xAngl); double yAn=Math.toRadians(yAngle); float x=(float)(30*Math.cos(xAn)*Math.sin(yAn)); float y=(float)(30*Math.sin(xAn)); float z=(float)(30*Math.cos(xAn)*Math.cos(yAn)); //System.out.print("jkl"); // float yy=(float)(Math.sin((double)xAngl));30**30*Math.cos((double)xAngl // System.out.printf("%f/n", xx); // System.out.printf("%f %f %f %f \n", xAngl,yAngle,xx,yy); //坐标系推远 if(xAngl>90&&xAngl<270) MatrixState.setCamera(x, y, z, 0, 0, 0, 0, -1, 0); else MatrixState.setCamera(x, y, z, 0, 0, 0, 0, 1, 0); MatrixState.pushMatrix(); //MatrixState.translate(0, 0, 0f); //ch.obj //绕Y轴、Z轴旋转 // MatrixState.rotate(xAngl, 1, 0, 0); // MatrixState.rotate(yAngle, 0, 1, 0); //若加载的物体部位空则绘制物体 //System.out.printf("**%f %f %f %f \n",aa[12],aa[13],aa[14],aa[15]); /* int h=Constant.size/3; * */ // System.out.printf("the width and height is :\n", null); // System.out.printf("%d %d \n ", w,h); // System.out.printf("*****%f %d \n", Constant.vertex1[3*i-1]); System.out.printf("****\n", null); if(lovo!=null) { float []aa=new float[16]; float []bb=new float[4]; float []cc=new float[4]; aa=MatrixState.getFinalMatrix(); int i=0; int h=Constant.size/3; for(int j=0;j<h;j++) { bb[0]=aa[0]*Constant.vertex[3*j]+aa[1]*Constant.vertex[3*j+1]+aa[2]*Constant.vertex[3*j+2]+aa[3]; bb[1]=aa[4]*Constant.vertex[3*j]+aa[5]*Constant.vertex[3*j+1]+aa[6]*Constant.vertex[3*j+2]+aa[7]; bb[2]=aa[8]*Constant.vertex[3*j]+aa[9]*Constant.vertex[3*j+1]+aa[10]*Constant.vertex[3*j+2]+aa[11]; bb[3]=aa[12]*Constant.vertex[3*j]+aa[13]*Constant.vertex[3*j+1]+aa[14]*Constant.vertex[3*j+2]+aa[15]; // Matrix.multiplyMM(cc, 0, aa, 0, bb, 0); //System.out.printf("**%f %f %f \n",Constant.vertex[j],Constant.vertex[j+1],Constant.vertex[j+2]); // System.out.printf("**%f %f %f %f \n",bb[0],bb[1],bb[2],bb[3]); if(bb[0]/bb[3]<0&&bb[1]/bb[3]<0) { Constant.vertex1[3*i]=Constant.vertex[3*j]; Constant.vertex1[3*i+1]=Constant.vertex[3*j+1]; Constant.vertex1[3*i+2]=Constant.vertex[3*j+2]; i++; } } Constant.size1 = 3*i; nv = new NewVertexs(MySurfaceView.this); // System.out.printf("%f \n", Constant.vertex1[3*i-1]); nv.drawSelf(); } else System.out.printf("%d \n", 3); MatrixState.popMatrix(); } public void onSurfaceChanged(GL10 gl, int width, int height) { w=width; h=height; //设置视窗大小及位置 GLES20.glViewport(0, 0, width,height); //System.out.printf("zhe jiu shi \n", null); //System.out.printf("%d %d \n", width,height); //计算GLSurfaceView的宽高比 float ratio = (float) width / height; //调用此方法计算产生透视投影矩阵 MatrixState.setProjectFrustum(-ratio, ratio, -1, 1, 2, 100); //调用此方法产生摄像机9参数位置矩阵 MatrixState.setCamera(0,0,30,0f,0f,0f,0f,1.0f,0.0f); } public void onSurfaceCreated(GL10 gl, EGLConfig config) { //设置屏幕背景色RGBA GLES20.glClearColor(0.0f,0.0f,0.0f,1.0f); //打开深度检测 GLES20.glEnable(GLES20.GL_DEPTH_TEST); //打开背面剪裁 GLES20.glEnable(GLES20.GL_CULL_FACE); //初始化变换矩阵 MatrixState.setInitStack(); //初始化光源位置'' // MatrixState.setLightLocation(40, 10, 20); //加载要绘制的物体 lovo=LoadUtil.loadFromFile("ch_t.obj", MySurfaceView.this.getResources(),MySurfaceView.this); // if(Constant.CURR_DRAW_MODE==3) //加载纹理 // textureId=initTexture(R.drawable.texture3); // else if(Constant.CURR_DRAW_MODE==4) // textureId1=initTexture(R.drawable.texture1); } /* public int initTexture(int drawableId)//textureId { //生成纹理ID int[] textures = new int[1]; GLES20.glGenTextures ( 1, //产生的纹理id的数量 textures, //纹理id的数组 0 //偏移量 ); int textureId=textures[0]; GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId); GLES20.glTexParameterf