public static IEnumerable <(Face face, double distanceFromOrign)> GetPlanerFaces(this Mesh mesh, Vector3 normal, double distanceFromOrigin, double normalTolerance = 0, double distanceTolerance = 0)
{
var normalToleranceSquared = normalTolerance * normalTolerance;
foreach (var facePlane in mesh.FacePlanes())
{
if (Math.Abs(facePlane.distanceFromOrigin - distanceFromOrigin) <= distanceTolerance &&
(facePlane.face.Normal - normal).LengthSquared <= normalToleranceSquared)
{
yield return(facePlane);
}
}
}
