Struct SculptEngine 

pub struct SculptEngine;

Implementations

impl SculptEngine

pub fn apply_add( model: &mut ParticleModel, hit_pos: Vec3, surface_normal: Vec3, params: &BrushParams, character: char, color: Vec4, symmetry: &SymmetryMode, )

Add particles at hit_pos using Poisson disk sampling within brush footprint.

pub fn poisson_disk_sample_disk( center: Vec3, normal: Vec3, radius: f32, density: f32, ) -> Vec<Vec3>

Poisson disk sampling on a disk surface.

pub fn apply_remove( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, symmetry: &SymmetryMode, )

Remove particles within brush radius using smooth falloff.

pub fn apply_smooth( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Smooth: Laplacian smoothing — move each particle toward neighborhood centroid.

pub fn apply_inflate( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Inflate: move particles outward along average normal.

pub fn apply_pinch( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Pinch: attract particles toward brush center.

pub fn apply_color( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Color brush: paint color onto particles with falloff.

pub fn apply_char( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Char brush: replace glyph within radius.

pub fn apply_flatten( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Flatten: project particles onto best-fit plane. Uses PCA via covariance matrix to find the plane normal.

pub fn apply_crease( model: &mut ParticleModel, hit_pos: Vec3, params: &BrushParams, )

Crease: push particles toward nearest crease line.

pub fn apply_clone( model: &mut ParticleModel, source_pos: Vec3, target_pos: Vec3, params: &BrushParams, )

Clone brush: stamp particles from source area to target area.