private string GetCandidateName(SceneElement element)
{
if (element == null)
{
return(string.Empty);
}
SceneNode root = element.StoryboardContainer as SceneNode ?? this.view.ViewModel.RootNode;
SceneNodeIDHelper sceneNodeIdHelper = new SceneNodeIDHelper(element.ViewModel, root);
string namePrefix = SceneNodeIDHelper.DefaultNamePrefixForType((ITypeId)element.Type);
return(sceneNodeIdHelper.GetValidElementID((SceneNode)element, namePrefix));
}
private SceneElement GroupElements()
{
ReadOnlyCollection <SceneElement> selection = this.SceneViewModel.ElementSelectionSet.Selection;
if (selection[0] is BaseFrameworkElement)
{
return((SceneElement)null);
}
if (!(selection[0] is Base3DElement))
{
return((SceneElement)null);
}
SceneElement primarySelection = this.SceneViewModel.ElementSelectionSet.PrimarySelection;
this.SceneViewModel.ElementSelectionSet.Clear();
List <SceneElement> list = new List <SceneElement>((IEnumerable <SceneElement>)selection);
Base3DElement base3Delement1 = (Base3DElement)null;
int num = int.MaxValue;
Viewport3DElement viewport = ((Base3DElement)list[0]).Viewport;
foreach (Base3DElement base3Delement2 in list)
{
if (base3Delement2.Viewport == viewport)
{
int depthFromViewport3D = base3Delement2.DepthFromViewport3D;
if (depthFromViewport3D < num)
{
base3Delement1 = base3Delement2;
num = depthFromViewport3D;
}
}
}
SceneElement parentElement = base3Delement1.ParentElement;
Matrix3D matrix3D = Matrix3D.Identity;
if (parentElement is Base3DElement)
{
matrix3D = ((Base3DElement)parentElement).GetComputedTransformFromViewport3DToElement();
matrix3D.Invert();
}
Base3DElement parent = (Base3DElement)null;
if (list[0] is Model3DElement)
{
Model3DGroup model3Dgroup = new Model3DGroup();
Model3DCollection model3Dcollection = new Model3DCollection();
model3Dgroup.Children = model3Dcollection;
parent = (Base3DElement)this.SceneViewModel.CreateSceneNode((object)model3Dgroup);
}
else if (list[0] is Visual3DElement)
{
parent = (Base3DElement)this.SceneViewModel.CreateSceneNode((object)new ModelVisual3D());
}
SceneNodeIDHelper sceneNodeIdHelper = new SceneNodeIDHelper(this.SceneViewModel, (SceneNode)this.SceneViewModel.ActiveSceneInsertionPoint.SceneElement.StoryboardContainer);
string validElementId = sceneNodeIdHelper.GetValidElementID((SceneNode)parent, "group3D");
sceneNodeIdHelper.SetLocalName((SceneNode)parent, validElementId);
using (this.SceneViewModel.ForceBaseValue())
{
Matrix3D[] matrix3DArray = new Matrix3D[list.Count];
for (int index = 0; index < list.Count; ++index)
{
matrix3DArray[index] = ((Base3DElement)list[index]).GetComputedTransformFromViewport3DToElement();
}
foreach (Base3DElement base3Delement2 in list)
{
if (base3Delement2 != primarySelection)
{
base3Delement2.Remove();
}
}
int insertAt = primarySelection.GetCollectionContainer().IndexOf((SceneNode)primarySelection);
primarySelection.Remove();
if (parentElement is Viewport3DElement)
{
GroupCommandHelpers.InsertElement(parentElement, (SceneNode)parent, insertAt);
}
else
{
GroupCommandHelpers.InsertElement(this.SceneViewModel, (Base3DElement)parentElement, (SceneNode)parent, new int?(insertAt));
}
for (int index = 0; index < list.Count; ++index)
{
GroupCommandHelpers.InsertElement(this.SceneViewModel, parent, (SceneNode)list[index], new int?());
((Base3DElement)list[index]).Transform = (Transform3D) new CanonicalTransform3D(matrix3DArray[index] * matrix3D);
}
}
return((SceneElement)parent);
}