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brush widget UI: don't allow 0 width or height

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sheaf 2024-05-28 10:36:26 +02:00
parent 56939ce01a
commit 7bb28f8c96
1 changed files with 8 additions and 5 deletions
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13
src/metabrushes/MetaBrush/Brush/Widget.hs
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@ -122,13 +122,16 @@ widgetUpdate widget mode ( oldPt, newPt ) ( MkR oldFlds ) =
| ℝ3 w h θ <- oldFlds
-> case mode of
ScaleAction whatScale ->
let T ( ℝ2 w' h' ) = rotate ( cos -θ ) ( sin -θ ) newPt
let T ( ℝ2 w0 h0 ) = rotate ( cos -θ ) ( sin -θ ) newPt
-- Don't allow width/height to become 0.
w' = max 1e-6 ( abs w0 )
h' = max 1e-6 ( abs h0 )
in case whatScale of
ScaleXY -> MkR $ ℝ3 ( abs w' ) ( abs h' ) θ
ScaleX -> MkR $ ℝ3 ( abs w' ) h θ
ScaleY -> MkR $ ℝ3 w ( abs h' ) θ
ScaleXY -> MkR $ ℝ3 w' h' θ
ScaleX -> MkR $ ℝ3 w' h θ
ScaleY -> MkR $ ℝ3 w h' θ
RotateAction {}
| norm newPt < 1e-5
| norm newPt < 1e-6
-> MkR oldFlds
| otherwise
->