On Apr 26, 7:24 am, CMF <manf...@gmail.com> wrote:
> Hi all, I would like to ask how to add a static background to the kube
> from the ApiDemo
There are two ways that immediately occur to me. First, make it
translucent and put it on top of a view containing your background
image. See
com.example.android.apis.graphics.TranslucentGLSurfaceViewActivity for
an example.
> I have created a sqaure behind the Kube, but it will rotate as the
> kube does
And this is the other approach. To make the cube rotate independently
of your background, you should be able to restore the unrotated model-
view matrix before your background-rendering code. Something like
this:
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -3.0f);
gl.glScalef(0.5f, 0.5f, 0.5f);
gl.glPushMatrix(); // This saves the unrotated matrix
gl.glRotatef(mAngle, 0, 1, 0);
gl.glRotatef(mAngle*0.25f, 1, 0, 0);
mWorld.draw(gl);
gl.glPopMatrix(); // This restores the unrotated matrix
// Put your background-drawing code here
I haven't tested the above code (it was written on the fly for this
response) but that's the basic idea. I use that technique in a couple
of places in various OpenGL apps.
String
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