void SelectObjectsHirarchy(ISceneNode root, Ray ray, ref ISelectable output_selectedNode, ref float bestDistance)
{
if (root.IsVisible)
{
if (root is ISelectable selectableNode && selectableNode.IsSelectable)
{
var distance = GeometryIntersection.IntersectObject(ray, selectableNode.Geometry, selectableNode.ModelMatrix);
if (distance != null)
{
if (distance < bestDistance)
{
bestDistance = distance.Value;
output_selectedNode = selectableNode;
}
}
}
bool isUnselectableGroup = root is GroupNode groupNode && groupNode.IsLockable == true && groupNode.IsSelectable == false;
if (!isUnselectableGroup)
{
foreach (var child in root.Children)
{
SelectObjectsHirarchy(child, ray, ref output_selectedNode, ref bestDistance);
}
}
}
}
void SelectObjectsHirarchy(ISceneNode root, BoundingFrustum frustrum, List <ISelectable> output_selectedNodes)
{
if (root.IsVisible)
{
if (root is ISelectable selectableNode && selectableNode.IsSelectable)
{
if (GeometryIntersection.IntersectObject(frustrum, selectableNode.Geometry, selectableNode.ModelMatrix))
{
output_selectedNodes.Add(selectableNode);
}
}
bool isUnselectableGroup = root is GroupNode groupNode && groupNode.IsLockable == true && groupNode.IsSelectable == false;
if (!isUnselectableGroup)
{
foreach (var child in root.Children)
{
SelectObjectsHirarchy(child, frustrum, output_selectedNodes);
}
}
}
}