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Raymarching based renderer for volume visualization

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README.md

raymarch

A basic ray marching volume rendering module.

Install

npm install raymarch

Example

View this demo in your browser right now

var createVolumeRenderer = require("raymarch")
var shell = require("gl-now")()
var camera = require("game-shell-orbit-camera")(shell)
var glm = require("gl-matrix")
var voxelize = require("voxelize")
var bunny = require("bunny")
var ops = require("ndarray-ops")

camera.lookAt([3,0,0], [0,0,0], [0,1,0])

var viewer

shell.on("gl-init", function() {
  var voxels = voxelize(bunny.cells, bunny.positions, 0.1).voxels
  ops.mulseq(voxels, 255)
  viewer = createVolumeRenderer(shell.gl, voxels)
})

shell.on("gl-render", function() {
  viewer.projection = glm.mat4.perspective(new Float32Array(16), Math.PI/4.0, shell.width/shell.height, 0.01, 1000.0)
  viewer.view = camera.view()
  viewer.draw()
})

API

var createVolumeViewer = require("raymarch")

Constructor

viewer = createVolumeViewer(gl, array)

Creates a volume viewer object

Methods

viewer.model

The current model matrix for the viewer

viewer.view

The current view matrix for the viewer

viewer.projection

The current projection matrix for the viewer

viewer.draw()

Draws the current volume to the screen

viewer.dispose()

Releases all resources associated with this viewer.

Credits

(c) 2013 Mikola Lysenko. MIT License

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