koobas.hobune.stream
Finding the vertices of each edge of a mesh face found by a raycast hit
I am firing a raycast at a mesh and hitting one face. From that hit.point, I want to find the four vertices that would surround that object.
Initially I considered something along the lines of:
int array of 4 of closest vertex indexes
for each vertex
for each close indice
is the distance closer than the current closest vertex
yes - move this and every array member after up and make this the new indice and break from close indice for loop
no - carry on
return the int array
But I don't think this will work for meshes that are thin and have an abnormal shape to them, like a thin width cube with a vertex in the centre of each face.
I'm sort of lost, as most mesh tutorials online only cover the basics; what a vertex is, normals, uvs. Could anyone advise me a direction for getting a solution to this issue?
I'm thinking I could solve this issue by comparing the UV coordinates of the four mesh indices. If they are not (0,0)(1,0)(0,1) and (1,1), they wouldn't be the correct ones surrounding the face. I don't plan to use the UV coordinates for anything else, either.
