public void OnSurfaceChanged(IGL10 gl, int width, int height)
{
gl.GlViewport(0, 0, width, height);
mViewportWidth = width;
mViewportHeight = height;
float ratio = (float)width / height;
mViewRect.Top = 1.0f;
mViewRect.Bottom = -1.0f;
mViewRect.Left = -ratio;
mViewRect.Right = ratio;
UpdatePageRects();
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity();
if (USE_PERSPECTIVE_PROJECTION)
{
GLU.GluPerspective(gl, 20f, (float)width / height, .1f, 100f);
}
else
{
GLU.GluOrtho2D(gl, mViewRect.Left, mViewRect.Right,
mViewRect.Bottom, mViewRect.Top);
}
gl.GlMatrixMode(GL10.GlModelview);
gl.GlLoadIdentity();
}