// Initialize _model.
private void BuildSceneGraph()
{
var root = BuildSceneGraph(_input, null);
if (root == null)
{
// Just for safety. (Should not occur in practice.)
throw new InvalidOperationException("Invalid root node.");
}
_model = new DRModelNodeContent();
// In most cases the root node is an empty node, which can be ignored.
if (root.GetType() == typeof(DRSceneNodeContent) &&
root.PoseLocal == Pose.Identity &&
root.ScaleLocal == Vector3F.One &&
root.UserData == null)
{
// Throw away root, only use children.
if (root.Children != null)
{
_model.Children = root.Children;
foreach (var child in _model.Children)
{
child.Parent = _model;
}
}
}
else
{
_model.Children = new List <DRSceneNodeContent> {
root
};
root.Parent = _model;
}
// Go through scene graph and update PoseWorld from the root to the leaves.
_model.PoseWorld = _model.PoseLocal;
foreach (var node in _model.GetDescendants())
{
node.PoseWorld = node.Parent.PoseWorld * node.PoseLocal;
}
}
// Initialize _model.
private void BuildSceneGraph()
{
var root = BuildSceneGraph(_input, null);
if (root == null)
{
// Just for safety. (Should not occur in practice.)
throw new InvalidOperationException("Invalid root node.");
}
_model = new DRModelNodeContent();
// In most cases the root node is an empty node, which can be ignored.
if (root.GetType() == typeof(DRSceneNodeContent)
&& root.PoseLocal == Pose.Identity
&& root.ScaleLocal == Vector3F.One
&& root.UserData == null)
{
// Throw away root, only use children.
if (root.Children != null)
{
_model.Children = root.Children;
foreach (var child in _model.Children)
child.Parent = _model;
}
}
else
{
_model.Children = new List<DRSceneNodeContent> { root };
root.Parent = _model;
}
// Go through scene graph and update PoseWorld from the root to the leaves.
_model.PoseWorld = _model.PoseLocal;
foreach (var node in _model.GetDescendants())
node.PoseWorld = node.Parent.PoseWorld * node.PoseLocal;
}
