Crate fidget_mesh 

Octree construction and meshing

This module implements Manifold Dual Contouring, to generate a triangle mesh from an implicit surface (or anything implementing Shape).

The resulting meshes should be

• Manifold
• Watertight
• Preserving sharp features (corners / edges)

However, they may contain self-intersections, and are not guaranteed to catch thin features (below the sampling grid resolution).

The resulting Mesh objects can be written out as STL files.

Here’s a full example, meshing a sphere:

use fidget_core::{
    context::Tree,
    vm::VmShape
};
use fidget_mesh::{Octree, Settings};

let radius_squared = Tree::x().square()
    + Tree::y().square()
    + Tree::z().square();
let tree: Tree = radius_squared.sqrt() - 0.6;
let shape = VmShape::from(tree);
let settings = Settings {
    depth: 4,
    ..Default::default()
};
let o = Octree::build(&shape, &settings).unwrap();
let mesh = o.walk_dual();

// Open a file to write, e.g.
// let mut f = std::fs::File::create("out.stl")?;
mesh.write_stl(&mut f)?;

Structs

Mesh

An indexed 3D mesh

Octree

Octree storing occupancy and vertex positions for Manifold Dual Contouring

Settings

Settings when building an octree and mesh