OpenGL.zip_Android opengl_Android实例代码_android_opengl_opengl andr

package com.Android.GL; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.nio.IntBuffer; import javax.microedition.khronos.opengles.GL10; import android.app.Activity; import android.content.Context; import android.graphics.Canvas; import android.opengl.GLU; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.os.SystemClock; import android.view.View; import java.lang.Object; import javax.microedition.khronos.opengles.*; import javax.microedition.khronos.egl.*; import android.graphics.Bitmap; import android.opengl.*; class Cube { public Cube() { int one = 0x10000; int vertices[] = { -one, -one, -one, //0 one, -one, -one, //1 one, one, -one, //2 -one, one, -one, //3 -one, -one, one, //4 one, -one, one, //5 one, one, one, //6 -one, one, one, //7 }; int colors[] = { 0, 0, 0, one, //0 black one, 0, 0, one, //1 red one, one, 0, one, //2 yellow 0, one, 0, one, //3 green 0, 0, one, one, //4 blue one, 0, one, one, //5 magneta one, one, one, one, //6 white 0, one, one, one, //7 cyan }; byte indices[] = { 0, 4, 5, 0, 5, 1, 1, 5, 6, 1, 6, 2, 2, 6, 7, 2, 7, 3, 3, 7, 4, 3, 4, 0, 4, 7, 6, 4, 6, 5, 3, 0, 1, 3, 1, 2 }; // Buffers to be passed to gl*Pointer() functions // must be direct, i.e., they must be placed on the // native heap where the garbage collector cannot // move them. // // Buffers with multi-byte datatypes (e.g., short, int, float) // must have their byte order set to native order ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length*4); vbb.order(ByteOrder.nativeOrder()); mVertexBuffer = vbb.asIntBuffer(); mVertexBuffer.put(vertices); mVertexBuffer.position(0); ByteBuffer cbb = ByteBuffer.allocateDirect(colors.length*4); cbb.order(ByteOrder.nativeOrder()); mColorBuffer = cbb.asIntBuffer(); mColorBuffer.put(colors); mColorBuffer.position(0); mIndexBuffer = ByteBuffer.allocateDirect(indices.length); mIndexBuffer.put(indices); mIndexBuffer.position(0); } public void draw(GL10 gl) { gl.glDisable(GL10.GL_TEXTURE_2D); gl.glFrontFace(GL10.GL_CW); gl.glVertexPointer(3, GL10.GL_FIXED, 0, mVertexBuffer); gl.glColorPointer(4, GL10.GL_FIXED, 0, mColorBuffer); gl.glDrawElements(GL10.GL_TRIANGLES, 36, GL10.GL_UNSIGNED_BYTE, mIndexBuffer); } private IntBuffer mVertexBuffer; private IntBuffer mColorBuffer; private ByteBuffer mIndexBuffer; } class GLView implements GLSurfaceView.Renderer { public Cube mCube=new Cube(); public void onSurfaceCreated(GL10 gl, EGLConfig config) { gl.glDisable(GL10.GL_DITHER); /* * Some one-time OpenGL initialization can be made here * probably based on features of this particular context */ gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST); gl.glClearColor(1,1,1,1); gl.glEnable(GL10.GL_CULL_FACE); gl.glShadeModel(GL10.GL_SMOOTH); gl.glEnable(GL10.GL_DEPTH_TEST); } public void onSurfaceChanged(GL10 gl, int w, int h) { gl.glViewport(0, 0, w, h); /* * Set our projection matrix. This doesn't have to be done * each time we draw, but usually a new projection needs to * be set when the viewport is resized. */ float ratio = (float) w / h; gl.glMatrixMode(GL10.GL_PROJECTION); gl.glLoadIdentity(); gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10); } /** * Draw the view content * * @see android.view.View#onDraw(android.graphics.Canvas) */ public void onDrawFrame(GL10 gl) { //一般的opengl程序，首先要做的就是清屏 gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); //紧接着设置模型视图矩阵 gl.glMatrixMode(GL10.GL_MODELVIEW); gl.glLoadIdentity();//清空矩阵 GLU.gluLookAt(gl, 0, 0, 3, 0, 0, 0, 0, 1, 0);//视点变换，将相机位置设置为(0, 0, 3)，同时指向(0, 0, 0)点 //设置模型位置旋转及缩放信息 gl.glTranslatef(0.0f, 0.0f, -1.0f);//将模型位置设置为(0, 0, -1) float angle = 30.0f; gl.glRotatef(angle, 0, 1, 0);//绕模型自身Y轴旋转30度 gl.glRotatef(angle, 1, 0, 0);//绕模型自身X轴旋转30度 gl.glScalef(1.2f, 1.2f, 1.2f);//设置三方向的缩放系数 //设置颜色 gl.glColor4f(1.0f, 0.0f, 0.0f, 0.0f); //渲染立方体 gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glEnableClientState(GL10.GL_COLOR_ARRAY); mCube.draw(gl); } } class CubeRenderer implements GLSurfaceView.Renderer { public CubeRenderer(boolean useTranslucentBackground) { mTranslucentBackground = useTranslucentBackground; mCube = new Cube(); } public void onDrawFrame(GL10 gl) { /* * Usually, the first thing one might want to do is to clear * the screen. The most efficient way of doing this is to use * glClear(). */ gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); /* * Now we're ready to draw some 3D objects */ gl.glMatrixMode(GL10.GL_MODELVIEW); gl.glLoadIdentity(); gl.glTranslatef(0, 0, -3.0f); gl.glRotatef(mAngle, 0, 1, 0); gl.glRotatef(mAngle*0.25f, 1, 0, 0); gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glEnableClientState(GL10.GL_COLOR_ARRAY); mCube.draw(gl); gl.glRotatef(mAngle*2.0f, 0, 1, 1); gl.glTranslatef(0.5f, 0.5f, 0.5f); mCube.draw(gl); mAngle += 1.2f; } public void onSurfaceChanged(GL10 gl, int width, int height) { gl.glViewport(0, 0, width, height); /* * Set our projection matrix. This doesn't have to be done * each time we draw, but usually a new projection needs to * be set when the viewport is resized. */ float ratio = (float) width / height; gl.glMatrixMode(GL10.GL_PROJECTION); gl.glLoadIdentity(); gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10); } public void onSurfaceCreated(GL10 gl, EGLConfig config) { /* * By default, OpenGL enables features that improve quality * but reduce performance. One might want to tweak that * especially on software renderer. */ gl.glDisable(GL10.GL_DITHER); /* * Some one-time OpenGL initialization can be made here * probably based on features of this particular context */ gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST); if (mTranslucentBackground) { gl.glClearColor(0,0,0,0); } else { gl.glClearColor(1,1,1,1); } gl.glEnable(GL10.GL_CULL_FACE); gl.glShadeModel(GL10.GL_SMOOTH); gl.glEnable(GL10.GL_DEPTH_TEST); } private boolean mTranslucentBackground; private Cube mCube; private float mAngle; } public class DGL extends Activity { /** Called when the activity is first created. */ private GLSurfaceView mGLView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mGLView = new GLSurfaceView(this); mGLView.setRenderer(new CubeRenderer(false)); //mGLView.setRenderer(new GLView()); setContentView(mGLView); } @Override p