Code example for GL10

Methods: gluPerspectiveglLoadIdentityglMatrixModeglViewport

    public static void onSurfaceChanged(GL10 gl, int width, int height) {
        if (height == 0) height = 1;   // To prevent divide by zero
        float aspect = (float) width / (float) height;
        // Set the viewport (display area) to cover the entire window 
        gl.glViewport(0, 0, width, height);
        // Setup perspective projection, with aspect ratio matches viewport 
        gl.glMatrixMode(GL10.GL_PROJECTION); // Select projection matrix
        gl.glLoadIdentity();                 // Reset projection matrix
        // Use perspective projection 
        GLU.gluPerspective(gl, 45, aspect, 0.1f, 100.f);
        gl.glMatrixMode(GL10.GL_MODELVIEW);  // Select model-view matrix
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