private static void EnsureClockwiseWinding(List <int> indices, List <Vector3> vertices)
{
if (indices == null || indices.Count < 3)
{
return;
}
if (vertices == null || vertices.Count < 1)
{
return;
}
for (var i = 0; i < indices.Count; i += 3)
{
var vert0 = vertices[indices[i + 0]];
var vert1 = vertices[indices[i + 1]];
var vert2 = vertices[indices[i + 2]];
if (!GeometryHelpers.IsCounterClockwiseXY(vert0, vert1, vert2))
{
continue;
}
var temp = indices[i + 1];
indices[i + 1] = indices[i + 2];
indices[i + 2] = temp;
}
}
