protected void drawSetup() {
// View frustrum
if (_scene.camera().frustum.isDirty()) {
updateViewFrustrum();
}
// Camera
_gl.glMatrixMode(GL10.GL_MODELVIEW);
_gl.glLoadIdentity();
GLU.gluLookAt(
_gl,
_scene.camera().position.x,
_scene.camera().position.y,
_scene.camera().position.z,
_scene.camera().target.x,
_scene.camera().target.y,
_scene.camera().target.z,
_scene.camera().upAxis.x,
_scene.camera().upAxis.y,
_scene.camera().upAxis.z);
// Background color
if (_scene.backgroundColor().isDirty()) {
if (_scene.backgroundTransparent() == true) _gl.glClearColor(0, 0, 0, 0);
else
_gl.glClearColor(
(float) _scene.backgroundColor().r() / 255f,
(float) _scene.backgroundColor().g() / 255f,
(float) _scene.backgroundColor().b() / 255f,
(float) _scene.backgroundColor().a() / 255f);
_scene.backgroundColor().clearDirtyFlag();
}
_gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
drawSetupLights();
// Always on:
_gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
}
protected void updateViewFrustrum() {
FrustumManaged vf = _scene.camera().frustum;
float n = vf.shortSideLength() / 2f;
float lt, rt, btm, top;
lt = vf.horizontalCenter() - n * _surfaceAspectRatio;
rt = vf.horizontalCenter() + n * _surfaceAspectRatio;
btm = vf.verticalCenter() - n * 1;
top = vf.verticalCenter() + n * 1;
if (_surfaceAspectRatio > 1) {
lt *= 1f / _surfaceAspectRatio;
rt *= 1f / _surfaceAspectRatio;
btm *= 1f / _surfaceAspectRatio;
top *= 1f / _surfaceAspectRatio;
}
_gl.glMatrixMode(GL10.GL_PROJECTION);
_gl.glLoadIdentity();
_gl.glFrustumf(lt, rt, btm, top, vf.zNear(), vf.zFar());
vf.clearDirtyFlag();
}