/// <summary>
/// Creates a new scene hints object with the specified source hintable.
/// </summary>
/// <param name="source">Source hintable</param>
public SceneHints(IHintable source)
{
_source = source;
_cullHint = CullHint.Inherit;
_lightHint = LightCombineHint.Inherit;
_transHint = TransparencyType.Default;
_pickHint = PickingHint.Inherit;
_orthoOrder = 0;
}
/// <summary>
/// Deserializes this SceneHints.
/// </summary>
/// <param name="input">Input to read from</param>
public void Read(ISavableReader input)
{
_cullHint = input.ReadEnum <CullHint>();
_pickHint = input.ReadEnum <PickingHint>();
_lightHint = input.ReadEnum <LightCombineHint>();
_transHint = input.ReadEnum <TransparencyType>();
_bucketType = input.ReadEnum <RenderBucketType>();
_orthoOrder = input.ReadInt();
}
/// <summary>
/// Checks if the Spatial should be culled, if the Spatial is
/// visible then Draw() will be called.
/// </summary>
/// <param name="renderer">BaseRenderer used to draw</param>
public void OnDraw(IRenderer renderer)
{
CullHint hint = _sceneHints.CullHint;
//Do trivial check
if (hint == CullHint.Always)
{
_frustumIntersect = ContainmentType.Outside;
return;
}
else if (hint == CullHint.Never)
{
_frustumIntersect = ContainmentType.Intersects;
Draw(renderer);
return;
}
//If dynamic, now check the frustum
ICamera cam = renderer.CurrentCamera;
//Set what our parent was, if any
if (Parent != null)
{
_frustumIntersect = _parent.LastFrustumIntersect;
}
else
{
_frustumIntersect = ContainmentType.Intersects;
}
//If our parent intersects with the frustum, we need to check this Spatial since it may
//be outside. If the parent was inside, then we are guaranteed to be contained as well.
if (hint == CullHint.Dynamic && _frustumIntersect == ContainmentType.Intersects)
{
_frustumIntersect = cam.Contains(_worldBounding);
}
//If intersecting/inside, draw
if (_frustumIntersect != ContainmentType.Outside)
{
Draw(renderer);
}
}