AddFaces3 method
Implementation
void AddFaces3(int n, [bool reverse = false]) {
assert(pointsOnly == false, "pointsOnly must be false");
int v = vertices.length;
for (int i = 0; i < n; i++, v += 3) {
AddFace3(v + 0, v + 1, v + 2, reverse);
}
}