看了几天3D这些天才弄懂些画图，现在弄这个纹理烦得很，半懂半不懂的，这个例子是我到网站下载的，感觉不错，先给大家看看，下期我再和大家讨论讨论。
 
package wyf.sj;import android.app.Activity;import android.os.Bundle;import android.widget.CompoundButton;import android.widget.LinearLayout;import android.widget.ToggleButton;import android.widget.CompoundButton.OnCheckedChangeListener;public class Sample6_2 extends Activity {    /** Called when the activity is first created. */ MySurfaceView mGLSurfaceView;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        mGLSurfaceView = new MySurfaceView(this);        mGLSurfaceView.requestFocus();//获取焦点        mGLSurfaceView.setFocusableInTouchMode(true);//设置为可触控                LinearLayout ll=(LinearLayout)findViewById(R.id.main_liner);         ll.addView(mGLSurfaceView);                ToggleButton tb=(ToggleButton)this.findViewById(R.id.ToggleButton01);        tb.setOnCheckedChangeListener(            new OnCheckedChangeListener()            {     @Override     public void onCheckedChanged(CompoundButton buttonView,boolean isChecked)      {      mGLSurfaceView.setSmoothFlag(!mGLSurfaceView.isSmoothFlag());
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private boolean smoothFlag=true;//是否进行平滑着色private int lightAngleGreen=0;//绿光灯的当前角度private int lightAngleRed=90;//红光灯的当前角度int textureId;//纹理名称IDpublic 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   } @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.ball.mAngleX += dy * TOUCH_SCALE_FACTOR;//设置沿x轴旋转角度            mRenderer.ball.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;    }    public void setSmoothFlag(boolean smoothFlag) {this.smoothFlag = smoothFlag;}public boolean isSmoothFlag() {return smoothFlag;}private class SceneRenderer implements GLSurfaceView.Renderer {   Ball ball;public SceneRenderer(){        //开启一个线程自动旋转球体        new Thread()        {        public void run()        {      try            {            Thread.sleep(1000);//休息1000ms再开始绘制            }            catch(Exception e)            {            e.printStackTrace();            }         while(true)        {      lightAngleGreen+=5;//转动绿灯      lightAngleRed+=5;//转动红灯                requestRender();//重绘画面                try                {                Thread.sleep(50);//休息10ms再重绘                }                catch(Exception e)                {                e.printStackTrace();                }                  }        }        }.start();}    public void onDrawFrame(GL10 gl) {                if(smoothFlag)    {//进行平滑着色    gl.glShadeModel(GL10.GL_SMOOTH);    }    else    {//不进行平滑着色    gl.glShadeModel(GL10.GL_FLAT);    }        //设定绿色光源的位置    float lxGreen=(float)(7*Math.cos(Math.toRadians(lightAngleGreen)));    float lzGreen=(float)(7*Math.sin(Math.toRadians(lightAngleGreen)));    float[] positionParamsGreen={lxGreen,0,lzGreen,1};//最后的1表示使用定位光        gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, positionParamsGreen,0);                 //设定红色光源的位置        float lyRed=(float)(7*Math.cos(Math.toRadians(lightAngleRed)));    float lzRed=(float)(7*Math.sin(Math.toRadians(lightAngleRed)));        float[] positionParamsRed={0,lyRed,lzRed,1};//最后的1表示使用定位光        gl.glLightfv(GL10.GL_LIGHT1, GL10.GL_POSITION, positionParamsRed,0);                //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, -1.8f);                  gl.glPushMatrix();//保护变换矩阵现场        ball.drawSelf(gl);//绘制球        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, ratio, -1, 1, 1, 10);    }    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);//GL10.GL_SMOOTH  GL10.GL_FLAT        //启用深度测试        gl.glEnable(GL10.GL_DEPTH_TEST);                gl.glEnable(GL10.GL_LIGHTING);//允许光照                    initGreenLight(gl);//初始化绿色灯        initRedLight(gl);//初始化红色灯        initMaterial(gl);//初始化材质                textureId=initTexture(gl,R.drawable.duke);//初始化纹理        ball=new Ball(4,textureId);    }}//初始化绿色灯private void initGreenLight(GL10 gl){    gl.glEnable(GL10.GL_LIGHT0);//打开0号灯          //环境光设置    float[] ambientParams={0.1f,0.1f,0.1f,1.0f};//光参数 RGBA    gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, ambientParams,0);                    //散射光设置    float[] diffuseParams={0f,1f,0f,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,1f,1.0f};//光参数 RGBA    gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_SPECULAR, specularParams,0);     }//初始化红色灯private void initRedLight(GL10 gl){        gl.glEnable(GL10.GL_LIGHT1);//打开1号灯          //环境光设置    float[] ambientParams={0.2f,0.2f,0.2f,1.0f};//光参数 RGBA    gl.glLightfv(GL10.GL_LIGHT1, GL10.GL_AMBIENT, ambientParams,0);                    //散射光设置    float[] diffuseParams={1f,0f,0f,1.0f};//光参数 RGBA    gl.glLightfv(GL10.GL_LIGHT1, GL10.GL_DIFFUSE, diffuseParams,0);         //反射光设置    float[] specularParams={1f,1f,1f,1.0f};//光参数 RGBA    gl.glLightfv(GL10.GL_LIGHT1, GL10.GL_SPECULAR, specularParams,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[] = {1.0f, 1.0f, 1.0f, 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);    gl.glMaterialf(GL10.GL_FRONT_AND_BACK, GL10.GL_SHININESS, 100.0f);}public int initTexture(GL10 gl,int textureId)//textureId{int[] textures = new int[1];gl.glGenTextures(1, textures, 0);    int currTextureId=textures[0];    gl.glBindTexture(GL10.GL_TEXTURE_2D, currTextureId);gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER,GL10.GL_NEAREST);    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_REPEAT);    gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T,GL10.GL_REPEAT);        InputStream is = this.getResources().openRawResource(textureId);    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);    bitmapTmp.recycle();         return currTextureId;}}

package wyf.sj;import java.nio.ByteBuffer;import java.nio.ByteOrder;import java.nio.FloatBuffer;import java.nio.IntBuffer;import java.util.ArrayList;import javax.microedition.khronos.opengles.GL10;public class Ball {private IntBuffer   mVertexBuffer;//顶点坐标数据缓冲private IntBuffer   mNormalBuffer;//顶点法向量数据缓冲    private FloatBuffer mTextureBuffer;//顶点纹理数据缓冲    public float mAngleX;//沿x轴旋转角度    public float mAngleY;//沿y轴旋转角度     public float mAngleZ;//沿z轴旋转角度     int vCount=0;//顶点数量    int textureId;//纹理ID        public Ball(int scale,int textureId)    {    this.textureId=textureId;    final int UNIT_SIZE=10000;            //实际顶点坐标数据的初始化================begin============================        ArrayList alVertix=new ArrayList();//存放顶点坐标的ArrayList    final int angleSpan=18;//将球进行单位切分的角度        for(int vAngle=-90;vAngle<=90;vAngle=vAngle+angleSpan)//垂直方向angleSpan度一份        {        for(int hAngle=0;hAngle<360;hAngle=hAngle+angleSpan)//水平方向angleSpan度一份        {//纵向横向各到一个角度后计算对应的此点在球面上的坐标        double xozLength=scale*UNIT_SIZE*Math.cos(Math.toRadians(vAngle));        int x=(int)(xozLength*Math.cos(Math.toRadians(hAngle)));        int z=(int)(xozLength*Math.sin(Math.toRadians(hAngle)));        int y=(int)(scale*UNIT_SIZE*Math.sin(Math.toRadians(vAngle)));        //将计算出来的XYZ坐标加入存放顶点坐标的ArrayList        alVertix.add(x);alVertix.add(y);alVertix.add(z);        }        }         vCount=alVertix.size()/3;//顶点的数量为坐标值数量的1/3，因为一个顶点有3个坐标            //将alVertix中的坐标值转存到一个int数组中        int vertices[]=new int[vCount*3];    for(int i=0;i alTexture=new ArrayList();//纹理                  int row=(180/angleSpan)+1;//球面切分的行数        int col=360/angleSpan;//球面切分的列数        for(int i=0;i0&&i   
 } } ); } @Override protected void onResume() { super.onResume(); mGLSurfaceView.onResume(); } @Override protected void onPause() { super.onPause(); mGLSurfaceView.onPause(); } }   
   
   








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