Module functions 

Auto-generated module

🤖 Generated with SplitRS

Traits

Sdf

Signed distance function trait.

Functions

count_surface_cells

Count the number of grid cells that straddle the zero isosurface.

extract_isosurface

Extract the zero isosurface from an SdfGrid using Marching Cubes.

fbm_noise

Fractal (octaved) value noise: fBm with octaves levels.

ray_march

March a ray defined by origin + t * direction through an SDF.

ray_march_relaxed

Ray march with over-relaxation for faster convergence.

sdf_ambient_occlusion

Estimate ambient occlusion at surface point p with normal n from an SDF.

sdf_closest_point

Project point p to the nearest surface point of the SDF using gradient descent on the absolute distance.

sdf_contact_manifold

Generate a contact manifold between a convex set of sample points and an SDF.

sdf_gradient

Estimate the gradient of an SDF at p via central finite differences.

sdf_mean_curvature

Mean curvature of an SDF at p estimated from the Laplacian of the SDF.

sdf_normal

Compute the unit outward surface normal at p by finite-difference gradient.

sdf_point_query

Test whether point p is inside the SDF and return contact data.

sdf_smooth_difference

Polynomial smooth-difference kernel (subtract b from a).

sdf_smooth_intersection

Polynomial smooth-intersection kernel.

sdf_smooth_union

Polynomial smooth-union kernel (Quilez).

sdf_soft_shadow

Estimate a soft-shadow factor for a point p toward a light at light_pos.

sdf_sphere_sweep

Simple swept-sphere vs SDF collision proxy.