Struct ManifoldBackend 

pub struct ManifoldBackend;

Manifold C++ kernel CSG backend.

Trait Implementations

impl CsgBackend for ManifoldBackend

type CsgType = ManifoldSolid

3D solid type produced by this backend.

type SketchType = CrossSection

2D sketch / cross-section type produced by this backend.

fn empty_csg() -> ManifoldSolid

fn empty_sketch() -> CrossSection

fn union(a: ManifoldSolid, b: ManifoldSolid) -> ManifoldSolid

fn difference(a: ManifoldSolid, b: ManifoldSolid) -> ManifoldSolid

fn intersection(a: ManifoldSolid, b: ManifoldSolid) -> ManifoldSolid

fn xor(a: ManifoldSolid, b: ManifoldSolid) -> ManifoldSolid

fn union_2d(a: CrossSection, b: CrossSection) -> CrossSection

fn difference_2d(a: CrossSection, b: CrossSection) -> CrossSection

fn intersection_2d(a: CrossSection, b: CrossSection) -> CrossSection

fn xor_2d(a: CrossSection, b: CrossSection) -> CrossSection

fn translate(csg: ManifoldSolid, offset: DVec3) -> ManifoldSolid

fn rotate(csg: ManifoldSolid, angles: DVec3) -> ManifoldSolid

fn scale(csg: ManifoldSolid, factors: DVec3) -> ManifoldSolid

fn mirror(csg: ManifoldSolid, axes: DVec3) -> ManifoldSolid

fn translate_2d(sketch: CrossSection, offset: DVec3) -> CrossSection

fn rotate_2d(sketch: CrossSection, angles: DVec3) -> CrossSection

fn scale_2d(sketch: CrossSection, factors: DVec3) -> CrossSection

fn mirror_2d(sketch: CrossSection, axes: DVec3) -> CrossSection

fn color(csg: ManifoldSolid, color: [f32; 4]) -> ManifoldSolid

fn color_2d(sketch: CrossSection, _color: [f32; 4]) -> CrossSection

fn extrude( sketch: CrossSection, height: f64, twist: f64, scale: f64, slices: usize, ) -> ManifoldSolid

fn revolve( sketch: CrossSection, angle_degrees: f64, segments: usize, ) -> ManifoldSolid

Revolve a sketch about its local Y axis (OpenSCAD rotate_extrude).

impl CsgToMesh for ManifoldBackend

Available on crate feature bevy only.

fn to_bevy_mesh(solid: &ManifoldSolid) -> Mesh

impl CsgToStl for ManifoldBackend

fn write_stl_binary(solid: &ManifoldSolid, writer: &mut dyn Write) -> Result<()>

fn write_stl_ascii(solid: &ManifoldSolid, writer: &mut dyn Write) -> Result<()>

impl DynamicBackend for ManifoldBackend

fn cube(size: [f64; 3]) -> ManifoldSolid

fn sphere(radius: f64, segments: usize, _stacks: usize) -> ManifoldSolid

stacks is advisory; backends with a single tessellation knob ignore it.

fn cylinder(radius: f64, height: f64, segments: usize) -> ManifoldSolid

fn cone(radius: f64, height: f64, segments: usize) -> ManifoldSolid

fn circle(radius: f64, segments: usize) -> CrossSection

fn square(size: [f64; 2]) -> CrossSection

fn polygon(points: &[[f64; 2]]) -> CrossSection

fn sketch(loops: &[Vec<DVec2>]) -> CrossSection

Build a profile from winding-normalized loops (CCW outers, CW holes) as produced by rscad_core::sketch::profile_loops.

fn offset( sketch: CrossSection, delta: f64, round: bool, chamfer: bool, segments: usize, ) -> CrossSection

2D polygon offset (offset(delta=…) / offset(r=…)). Default passes the profile through unchanged — for backends without polygon offsetting (BSP, the documented 2D outlier). round wins over chamfer.

fn union_all(items: Vec<ManifoldSolid>) -> ManifoldSolid

N-ary union; override when the backend has a batch operation.

fn union_all_2d(items: Vec<CrossSection>) -> CrossSection

const SKETCH_IS_CSG: bool = false

true when the backend uses one type for 2D and 3D (BSP): bare 2D nodes keep their geometry in 3D context and vice versa, via the two bridge hooks. When false (Manifold), out-of-context nodes are empty and the hooks are never called.

fn sketch_as_csg(_sketch: Self::SketchType) -> Self::CsgType

Bare 2D geometry appearing in 3D context. Only called when SKETCH_IS_CSG is true.

fn csg_as_sketch(_csg: Self::CsgType) -> Self::SketchType

3D geometry appearing in 2D context. Only called when SKETCH_IS_CSG is true.

impl ToCsg<ManifoldBackend> for Cube

fn to_csg(&self) -> ManifoldSolid

impl ToCsg<ManifoldBackend> for Cylinder

fn to_csg(&self) -> ManifoldSolid

impl ToCsg<ManifoldBackend> for Sphere

fn to_csg(&self) -> ManifoldSolid

impl ToSketch<ManifoldBackend> for Circle

fn to_sketch(&self) -> CrossSection

impl<T: Object + ToSketch<ManifoldBackend>> ToSketch<ManifoldBackend> for Offset<T>

fn to_sketch(&self) -> CrossSection

impl<const N: usize> ToSketch<ManifoldBackend> for Polygon<N>

fn to_sketch(&self) -> CrossSection

impl ToSketch<ManifoldBackend> for PolygonDynamic

fn to_sketch(&self) -> CrossSection

impl ToSketch<ManifoldBackend> for Square

fn to_sketch(&self) -> CrossSection