How to get a normal "plagiotropous" at the vertices of the two faces?

[sinkinthesea]

Emm, in these pictures, normal is different in diffrent physics.
I used Api : ShapeCast with a CapsuleShape.
If i want a normal like picture 2, is there some way easy?

[jrouwe]

The algorithm used during CastShape (GJK) does not return a terribly accurate normal, you can however improve the results:

If the capsule in this picture collides at the start of the sweep and you want an accurate normal you'll need to set ShapeCastSettings::mReturnDeepestPoint = true, this will cost some performance but gives you a more accurate normal.

If the capsule in this picture collides somewhere between the start and end of the sweep you can try setting ShapeCastSettings::mUseShrunkenShapeAndConvexRadius = true.

[sinkinthesea]

Thank you very much ~ ^_^