koobas.hobune.stream
Detect vertex hit and its neighbors by RaycastHit??
Is it possible to detect the vertex hit and its neighbors by RaycastHit?
Loius is almost right. It's the triangle index. By multiplying it by 3 you get the index of the first vertex index. It should be like this:
// Should work in C# and UnityScript
// ...
var MC = hit.collider as MeshCollider;
if (MC != null)
{
var mesh = MC.sharedMesh;
var index = hit.triangleIndex * 3;
var hit1 = mesh.vertices[mesh.triangles[index ]];
var hit2 = mesh.vertices[mesh.triangles[index + 1]];
var hit3 = mesh.vertices[mesh.triangles[index + 2]];
}
Those are the 3 vertices that surround the hit point.
Keep in mind that hit.triangleIndex only works with a MeshCollider. No other collider will give you that information since they are pure mathematical colliders which are not based on triangles.
RaycastHit has a property called triangleIndex that tells you what the index of the triangle that was hit. I can't be much more concrete about this since I still couldn't even "hit" my procedural mesh, but that's other story. When I have some success, if you are still doubting about this I will try to be more helpful.
That would be an index into the mesh.vertices array:
hit1 = mesh.vertices[triangleIndex*3];
hit2 = mesh.vertices[triangleIndex*3+1];
hit3 = mesh.vertices[triangleIndex*3+2];
did you add meshcolliders to your procedural mesh? - what do you mean you can't get a hit?
