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surface_normal

oxiphysics_geometry::implicit_surfaces

Function surface_normal 

Source 
pub fn surface_normal(
    sdf: &dyn ImplicitSurface,
    p: [f64; 3],
    eps: f64,
) -> [f64; 3]
Expand description

Estimate the outward unit normal of an implicit surface at p using central differences with step size eps.

§Arguments

  • sdf — implicit surface
  • p — query point (should be near or on the surface)
  • eps — finite difference step (typical: 1e-4 to 1e-6)