internal IEnumerable <SceneObjectBatch> GetGeometries(State.GraphicsStateSet currentState)
{
if (_GeometryInstances.Count > 0)
{
foreach (Geometry sceneObjectBatch in _GeometryInstances)
{
State.GraphicsStateSet geometryState;
if (sceneObjectBatch.State != null)
{
geometryState = currentState.Push();
geometryState.Merge(sceneObjectBatch.State);
}
else
{
geometryState = currentState;
}
yield return(new SceneObjectBatch(
sceneObjectBatch.VertexArray ?? VertexArray,
geometryState,
sceneObjectBatch.Program ?? Program
));
}
}
else
{
yield return(new SceneObjectBatch(VertexArray, currentState, Program));
}
}
internal IEnumerable <SceneObjectBatch> GetGeometries(State.GraphicsStateSet currentState, IEnumerable <Plane> clippingPlanes, IMatrix4x4 viewModel)
{
if (_GeometryInstances.Count > 0)
{
foreach (Geometry sceneObjectBatch in _GeometryInstances)
{
IBoundingVolume instanceVolume = sceneObjectBatch.BoundingVolume ?? _BoundingVolume;
if (instanceVolume != null && instanceVolume.IsClipped(clippingPlanes, viewModel))
{
continue;
}
State.GraphicsStateSet geometryState;
if (sceneObjectBatch.State != null)
{
geometryState = currentState.Push();
geometryState.Merge(sceneObjectBatch.State);
}
else
{
geometryState = currentState;
}
yield return(new SceneObjectBatch(
sceneObjectBatch.VertexArray ?? VertexArray,
geometryState,
sceneObjectBatch.Program ?? Program
));
}
}
else
{
if (_BoundingVolume != null && _BoundingVolume.IsClipped(clippingPlanes, viewModel))
{
yield break;
}
yield return(new SceneObjectBatch(VertexArray, currentState, Program));
}
}
