Struct MeshFactory 

pub struct MeshFactory;

Procedural mesh constructors.

Notes:

• The shapes here are intentionally simple and low-poly.
• Winding order: We return counter-clockwise triangles in object space for “front faces”.

Implementations

impl MeshFactory

pub fn triangle_2d() -> CpuMesh

2D equilateral triangle centered at origin.

pub fn quad_2d() -> CpuMesh

2D quad (square) as two triangles.

pub fn cube() -> CpuMesh

Unit-ish cube centered at origin.

This is a cube with per-face vertices (24 vertices, 12 triangles) so normals are flat.

pub fn wireframe_box(thickness: f32) -> CpuMesh

Unit wireframe box centered at the origin, represented by twelve solid edge prisms.

thickness is relative to the unit box dimensions and is clamped to (0, 1]. Using triangles instead of line primitives keeps the geometry compatible with the normal mesh rendering path and gives the edges visible thickness from every view direction.

pub fn tetrahedron() -> CpuMesh

Simple tetrahedron (4 vertices, 4 faces).

pub fn icosahedron(tessellations: u32, sphericalness: f32) -> CpuMesh

Icosahedron with optional recursive tessellation and spherical blending.

tessellations is the number of recursive 4-way triangle splits. sphericalness blends from planar face subdivision (0.0) to an icosphere (1.0).

pub fn sphere() -> CpuMesh

UV sphere centered at origin.

Radius is 0.5 to match the unit-ish cube extents.

pub fn cone(number_of_segments: u32) -> CpuMesh

Cone centered at origin, axis-aligned along +Z.

Geometry:

• height = 1.0 (z in [-0.5, +0.5])
• base radius = 0.5 (at z = -0.5)

number_of_segments controls radial tessellation.

pub fn circle_2d( inner_radius: f32, outer_radius: f32, number_of_segments: u32, ) -> CpuMesh

2D ring/annulus in the XY plane (normal +Z).

inner_radius and outer_radius are in object-space units.

pub fn partial_annulus_2d( inner_radius: f32, outer_radius: f32, start_angle_radians: f32, sweep_angle_radians: f32, number_of_segments: u32, ) -> CpuMesh

2D partial ring/annulus in the XY plane (normal +Z).

start_angle_radians is the arc start angle in standard polar coordinates. sweep_angle_radians is the angular span; negative values are accepted and are normalized to the equivalent positive arc.

pub fn star( points: u32, inner_radius_fraction: f32, outer_bevel_segments: u32, inner_bevel_segments: u32, ) -> CpuMesh

2D filled star centered at the origin in the XY plane (normal +Z).

pub fn heart(number_of_segments: u32) -> CpuMesh

2D filled heart centered near the origin in the XY plane (normal +Z).