Unity creates a cube like collider when selecting "convex" for a complete different looking mesh created with MeshFilter. How can I fix this?

Questions & Answers
1

,Hey guys,

I’m creating a Mesh out of a curve of points and a straight line of points (both the curve and the line have the same number of points) via script.

189550-interpol3.jpg
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I need the mesh created as a trigger in the end, but I can’t use it in a correct way, since the mesh has to be convex to be a trigger (for a mesh collider). When I tick the option “convex” in the inspector of that collider it creates a box like collider which I can’t use for the precise collision i need.

189551-interpol4.jpg
189551-interpol4.jpg963×618 142 KB

Is there any way to get a convex mesh in the form (or very similar) I need?

More Information for interested People:
I connect all vertices in a rectangle like manner: First I connect the top left point, the bottom left point and the point right next to the bottom one. After that I connect both bottom points with the second point of the top points. It goes on like that.
The curve in the top is interpolated through the the red points.

2

I found a solution myself:
Since my mesh was flat, it wasn’t convex by itself and unity has a weird way to create a convex new mesh out of that (for the collider). I just copied the mesh and moved it a bit under the initial mesh. Then I combined the meshes.
Since the mesh isn’t flat anymore, unity will create a convex collider, that fits exactly to the mesh.