pub fn reflect_lines(
model: &Model,
shape: &Shape,
light: Vector,
tol: Tolerances,
) -> OgeomResult<Vec<Silhouette>>Expand description
The reflect lines of a shape under a light: where the surface turns away from the light rather than from the eye.
The same locus as a silhouette, asked of a different direction, which is what a reflect line is, and why the two share a construction. A surface inspected this way shows its own creases: the lines move a long way for a small change in curvature.
ยงErrors
As silhouettes.