static UnityEngine.Mesh CreateReferenceMesh(PrimitiveType type)
{
GameObject refGo = GameObject.CreatePrimitive(type);
UnityEngine.Mesh mesh = refGo.GetComponent <MeshFilter>().sharedMesh;
Destroy(refGo);
return(mesh);
}
static UnityEngine.Mesh GetReferenceMesh(ref UnityEngine.Mesh cache, PrimitiveType type)
{
if (cache == null)
{
cache = CreateReferenceMesh(type);
}
return(cache);
}
private static void AppendConvex(ref ConvexHull hull, RigidTransform worldFromCollider, ref List <DisplayResult> results)
{
int totalNumVertices = 0;
for (int f = 0; f < hull.NumFaces; f++)
{
totalNumVertices += hull.Faces[f].NumVertices + 1;
}
Vector3[] vertices = new Vector3[totalNumVertices];
Vector3[] normals = new Vector3[totalNumVertices];
int[] triangles = new int[(totalNumVertices - hull.NumFaces) * 3];
int startVertexIndex = 0;
int curTri = 0;
for (int f = 0; f < hull.NumFaces; f++)
{
Vector3 avgFace = Vector3.zero;
Vector3 faceNormal = hull.Planes[f].Normal;
for (int fv = 0; fv < hull.Faces[f].NumVertices; fv++)
{
int origV = hull.FaceVertexIndices[hull.Faces[f].FirstIndex + fv];
vertices[startVertexIndex + fv] = hull.Vertices[origV];
normals[startVertexIndex + fv] = faceNormal;
Vector3 v = hull.Vertices[origV];
avgFace += v;
triangles[curTri * 3 + 0] = startVertexIndex + fv;
triangles[curTri * 3 + 1] = startVertexIndex + (fv + 1) % hull.Faces[f].NumVertices;
triangles[curTri * 3 + 2] = startVertexIndex + hull.Faces[f].NumVertices;
curTri++;
}
avgFace *= 1.0f / hull.Faces[f].NumVertices;
vertices[startVertexIndex + hull.Faces[f].NumVertices] = avgFace;
normals[startVertexIndex + hull.Faces[f].NumVertices] = faceNormal;
startVertexIndex += hull.Faces[f].NumVertices + 1;
}
UnityEngine.Mesh mesh = new UnityEngine.Mesh();
mesh.vertices = vertices;
mesh.normals = normals;
mesh.triangles = triangles;
results.Add(new DisplayResult
{
Mesh = mesh,
Scale = Vector3.one,
Position = worldFromCollider.pos,
Orientation = worldFromCollider.rot
});
}
