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prevent crash in draw

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This commit is contained in:
Lars Brubaker 2021-03-08 17:41:11 -08:00
parent 6cd84f7de4
commit 3c9a9d75f3
1 changed files with 2 additions and 1 deletions
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3
MatterControlLib/PartPreviewWindow/View3D/Gui3D/MoveInZControl.cs
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@ -234,7 +234,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
IntersectInfo info = hitPlane.GetClosestIntersection(mouseEvent3D.MouseRay);
if (info != null
&& selectedItem != null)
&& selectedItem != null
&& mouseDownSelectedBounds != null)
{
var delta = info.HitPosition.Z - initialHitPosition.Z;