npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

haar-3d

v1.0.1

Published

Fills holes in meshes, interpolates point clouds, adaptively contours octrees, voxelization and much more

Downloads

14

Readme

haar-tree-3d

This module is an implementation of a sparse 3-dimensional Haar wavelet basis. You can use it to do the following:

  • Voxelize boundary representations (polygons, meshes, etc.)
  • Fill holes in meshes
  • Smooth or clean up noisy data

The rasterization technique is based on the following paper:

J. Manson, S. Schaefer. (2011) "Wavelet Rasterization", Computer Graphics Forum

Install

npm i haar-tree-3d

Example

const bunny = require('bunny')
const rasterize = require('haar-tree-3d/rasterize-cells')
const contour = require('haar-tree-3d/contour')

// renders the bunny mesh into a wavelet basis
const tree = rasterize(bunny.cells, bunny.positions, {depth: 6})

// extracts an isosurface mesh contour
const isomesh = contour(tree)

Usage

Rasterization

var tree = require('haar-tree-3d/rasterize-cells)(cells, positions[, options])

Rasterizes a triangular mesh into a sparse wavelet representation

  • cells cells are the faces of the mesh
  • positions positions are the locations of the vertices of the mesh
  • options
    • options.depth depth is the depth of the octree

Returns A sparse wavelet tree encoding the meshes

Sampling

var value = require('haar-tree-3d/sample')(tree, x, y, z)

Samples the Haar wavelet tree at a specific point (x, y, z) in 3D space

  • tree is the Haar tree
  • x,y,z are the coordinates of the point

var array = require('haar-tree-3d/to-ndarray')(tree[, options])

Converts the Haar tree into an ndarray. Note that this representation is not very efficient.

  • tree is the Haar tree

Contouring

var mesh = require('haar-tree-3d/contour')(tree)

Extracts a contour from a mesh field

  • tree is a Haar tree

Credits

Development supported by Standard Cyborg.

(c) 2017- Mikola Lysenko