private static bool TraverseAndStream(QtNode <GrassPatch> node, TraversalData data)
{
Vector3 position = To3D(node.GetCenter());
position.y = node.Value.Height;
bool isInRange = Vector3.SqrMagnitude(data.SubjectPosition - position) <= data.LodRanges[node.Depth];
// Todo: save memory by only assigning values to nodes that will actually carry a payload; the leaves
if (!node.HasChildren)
{
if (isInRange)
{
data.LoadRequests.Add(node);
}
else
{
data.UnloadRequests.Add(node);
}
}
bool stateChange = node.Value.WasInRange != isInRange;
node.Value.WasInRange = isInRange;
return(isInRange || stateChange);
}
private static bool TraverseAndDrawGizmos(QtNode <GrassPatch> node, TraversalData data)
{
if (node.Value.State != NodeState.Unloaded)
{
Vector3 position = To3D(node.GetCenter());
position.y = node.Value.Height;
Gizmos.color = NodeStateColors[(int)node.Value.State];
Gizmos.DrawWireCube(position, new Vector3(node.Size, 1f, node.Size));
}
return(node.Value.WasInRange);
}
