private bool TryGetElementIdAtPosition(ref Vector3 worldPosition, out Guid elementId)
{
var hitResults = GetAdornerVisualsAtPosition(ref worldPosition) as List <UIRenderFeature.HitTestResult>;
float smallestArea = float.MaxValue;
elementId = default;
for (int i = 0; i < hitResults.Count; i++)
{
UIRenderFeature.HitTestResult hr = hitResults[i];
if (hr.Element.DependencyProperties.TryGetValue(AssociatedElementIdPropertyKey, out var thisElementId))
{
var editor = Controller.Editor;
var partId = new AbsoluteId(editor.Asset.Id, thisElementId);
var element = editor.FindPartViewModel(partId);
var uielement = (element as UIElementViewModel)?.AssetSideUIElement as UIElement;
if (uielement?.IsVisibleInTree ?? false)
{
float mysize = uielement.Width * uielement.Height;
if (mysize < smallestArea)
{
smallestArea = mysize;
elementId = thisElementId;
}
}
}
}
return(smallestArea < float.MaxValue);
}
private bool TryGetElementIdAtPosition(ref Vector3 worldPosition, out Guid elementId)
{
var hitResults = GetAdornerVisualsAtPosition(ref worldPosition) as List <UIRenderFeature.HitTestResult>;
float smallestArea = float.MaxValue;
elementId = default;
var uiComponent = Controller.GetEntityByName(UIEditorController.AdornerEntityName).Get <UIComponent>();
for (int i = 0; i < hitResults.Count; i++)
{
UIRenderFeature.HitTestResult hr = hitResults[i];
if (hr.Element.DependencyProperties.TryGetValue(AssociatedElementIdPropertyKey, out var thisElementId))
{
var editor = Controller.Editor;
var partId = new AbsoluteId(editor.Asset.Id, thisElementId);
var element = editor.FindPartViewModel(partId);
var uielement = (element as UIElementViewModel)?.AssetSideUIElement as UIElement;
if (uielement?.IsVisibleInTree ?? false)
{
// make sure we get a size that isn't NaN
float mysize;
UIElement lookat = uielement;
do
{
mysize = lookat.Width * lookat.Height;
if (float.IsNaN(mysize) == false)
{
break;
}
if (uielement is TextBlock tb)
{
mysize = tb.CalculateTextSize().Area();
break;
}
if (lookat.Parent == null)
{
mysize = uiComponent.Resolution.X * uiComponent.Resolution.Y;
break;
}
lookat = lookat.Parent;
} while (true);
// ok, use this size info to select the smallest element
if (mysize < smallestArea)
{
smallestArea = mysize;
elementId = thisElementId;
}
}
}
}
return(smallestArea < float.MaxValue);
}