It should be made easy to flip things by using negative scales. This may "just work" with rendering (since we don't do any back face culling), but for collisions (at least), we'll need to check for a negative determinant and reverse the winding order when detected.
It should be made easy to flip things by using negative scales. This may "just work" with rendering (since we don't do any back face culling), but for collisions (at least), we'll need to check for a negative determinant and reverse the winding order when detected.