KubeRendererpublic class KubeRenderer extends Object implements GLSurfaceView.Renderer| Example of how to use OpenGL|ES in a custom view |
| Fields Summary |
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| private GLWorld | mWorld | | private AnimationCallback | mCallback | | private float | mAngle |
| Constructors Summary |
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public KubeRenderer(GLWorld world, AnimationCallback callback)
mWorld = world;
mCallback = callback;
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| Methods Summary |
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| public float | getAngle()
return mAngle;
| | public void | onDrawFrame(javax.microedition.khronos.opengles.GL10 gl)
if (mCallback != null) {
mCallback.animate();
}
/*
* 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(). However we must make sure to set the scissor
* correctly first. The scissor is always specified in window
* coordinates:
*/
gl.glClearColor(0.5f,0.5f,0.5f,1);
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
/*
* Now we're ready to draw some 3D object
*/
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -3.0f);
gl.glScalef(0.5f, 0.5f, 0.5f);
gl.glRotatef(mAngle, 0, 1, 0);
gl.glRotatef(mAngle*0.25f, 1, 0, 0);
gl.glColor4f(0.7f, 0.7f, 0.7f, 1.0f);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
gl.glEnable(GL10.GL_CULL_FACE);
gl.glShadeModel(GL10.GL_SMOOTH);
gl.glEnable(GL10.GL_DEPTH_TEST);
mWorld.draw(gl);
| | public void | onSurfaceChanged(javax.microedition.khronos.opengles.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, 2, 12);
/*
* 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);
gl.glActiveTexture(GL10.GL_TEXTURE0);
| | public void | onSurfaceCreated(javax.microedition.khronos.opengles.GL10 gl, javax.microedition.khronos.egl.EGLConfig config)
// Nothing special, don't have any textures we need to recreate.
| | public void | setAngle(float angle)
mAngle = angle;
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