getTriangleNormals method
Get the three vertices for triangle i.
Implementation
void getTriangleNormals(int i, Vector3 a, Vector3 b, Vector3 c) {
final i3 = i * 3;
getIndicesNormal(indices[i3], a);
getIndicesNormal(indices[i3 + 1], b);
getIndicesNormal(indices[i3 + 2], c);
}