Description

Flipping faces on a brush affects all other brushes

Subtractive brushes will have their internal faces show if enough additive brush faces are flipped.

If the faces of a subtractive brush are flipped the faces become visible. However, if this box is moved over an additive brush with its faces flipped internally, the additive brush will act similarly to a subtractive brush. If a subtractive brush normally interacts with an additive brush flipped internally, it will build onto the additive brush.

Steps to Reproduce

1. Open editor (any project)
2. Create an additive brush
3. Create a subtractive brush
4. Go to geometry editing mode
5. Select all faces of additive brush
6. Flip the faces using the "flip" button in Geometry Editing mode
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Repro steps from UE-30681:

  1. Open a Default New Level
  2. Create an add geometry object
  3. Create another add geometry object
  4. Create a subtract geometry object
  5. Navigate to the Geometry Editing Tab
  6. Select any geometry object
  7. Select the Flip button under Geometry Editing
    Result : Faces of add or subtract geometry flip even when not selected.

Alternate Repro

  1. Open a Default New Level
  2. Create an add geometry object
  3. Navigate to the Geometry Editing Tab
  4. Select the geometry object you added
  5. Select Flip
  6. Navigate to Place and then geometry
  7. Create an add geometry object
    Result: The second geometry object added will be subtract instead of add

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ComponentTools - BSP
Affects Versions4.7.54.144.204.23
CreatedApr 9, 2015
UpdatedMay 7, 2019