Simulate with complex geometries and complex physics
mirror{
generalized mirroring across a plane
Given a point (X,Y,Z) and a unit normal (NormalX, NormalY, NormalZ)
or a normal (NormalX, NormalY, NormalZ) that is scaled to NormalLength ,
this operation mirrors the geometry across the plane through (X,Y,Z)
perpendicular to its normal (NormalX, NormalY, NormalZ).
Examples:
The generalized behavior for non-unit length \( L\) of the normal
would move each node \( P\) of the geometry to \( P + L^2(P_\text{mirrored} - P)\).