volume-brush

Volumetric brush implementation, heavily inspired by (and adapted from) toxiclibs.

Installation

npm i volume-brush

Usage

const createVolume = require("volume-brush");

// create volume to work with
const volume = createVolume([128, 128, 128], [100, 100, 100]);

// leave a mark in 3d space of size `10`
volume.brush([50, 50, 50], 10);

// do something with the mesh
const mesh = volume.calculateMesh();

Running Examples

1. git clone this repo
2. cd examples
3. npm install && npm start
4. open http://localhost:3000

Examples can also generate OBJ files by using npm run export.

API

const volume = createVolume(dims, [size])

Creates the sparse voxel octree, params:

• dims - 3d vector describing the actual voxel octree dimensions
• size - scaled size that can be used with brush, defaults to dims if not provided

volume.brush(position, radius, [density], [brushMode])

• position - 3d vector describing center of the brush, uses size coords provided to createVolume
• radius - radius of the brush-sphere
• density - optional - density of the volume, values less than 0.0 will "carve out" volume, defaults to 1.0
• brushMode - one of three brush modes, (defaults to "additive"):
  • "additive"
  • "peak"
  • "replace"

volume.calculateMesh()

Calculates simplicial complex from current volume. Returns { cells, positions }.