README.md

three.js

Javascript 3D Engine

The aim of this project is to create a lightweight 3D engine with a very low level of abstraction — in other words, for dummies. The engine can render using <canvas>, <svg> and WebGL.

API Reference — be aware that the API may change from revision to revision breaking backwards compatibility.

More? #three.js on irc.freenode.net

Examples

WebGL (Context 3D)

Canvas (Context 2D)

Featured projects

Usage

Download the minified library and include it in your html.

<script src="js/Three.js"></script>

This code creates a camera, then creates a scene object, adds a bunch of random particles in it, creates a <canvas> renderer and adds its viewport in the document.body element.

<script>

	var camera, scene, renderer;

	init();
	animate();

	function init() {

		camera = new THREE.Camera( 75, window.innerWidth / window.innerHeight, 1, 10000 );
		camera.position.z = 1000;

		scene = new THREE.Scene();

		for ( var i = 0; i < 1000; i ++ ) {

			var particle = new THREE.Particle( new THREE.ParticleCircleMaterial( { color: Math.random() * 0xffffff } ) );
			particle.position.x = Math.random() * 2000 - 1000;
			particle.position.y = Math.random() * 2000 - 1000;
			particle.position.z = Math.random() * 2000 - 1000;
			particle.scale.x = particle.scale.y = Math.random() * 10 + 5;
			scene.addObject( particle );

		}

		renderer = new THREE.CanvasRenderer();
		renderer.setSize( window.innerWidth, window.innerHeight );

		document.body.appendChild( renderer.domElement );

	}

	function animate() {

		// Include examples/js/RequestAnimationFrame.js for cross-browser compatibility.
		requestAnimationFrame( animate );
		render();

	}

	function render() {

		renderer.render( scene, camera );

	}

</script>

Change Log

2011 02 26 - r33 (184.605 KB, gzip: 45.481 KB)

• Added ParticleSystem object to WebGLRenderer (alteredq)
• Added Line support to WebGLRenderer (alteredq)
• Added vertex colors support to WebGLRenderer (alteredq)
• Added Ribbon object. (alteredq)
• Added updateable textures support to WebGLRenderer (alteredq)
• Added Sound object and SoundRenderer. (empaempa)
• LOD, Bone, SkinnedMesh objects and hierarchy being developed. (empaempa)
• Changed build setup (Three.js now includes everything. Three*.js inside build/custom folder) (mrdoob)
• Many internal changes.

2010 12 31 - r32 (89.301 KB, gzip: 21.351 KB)

• Scene now supports Fog and FogExp2. WebGLRenderer only right now. (alteredq)
• Added setClearColor( hex, opacity ) to WebGLRenderer and CanvasRenderer (alteredq & mrdoob)
• WebGLRenderer shader system refactored improving performance. (alteredq)
• Projector now does frustum culling of all the objects using their sphereBoundingBox. (thx errynp)
• material property changed to materials globaly.

2010 12 06 - r31 (79.479 KB, gzip: 18.788 KB)

• Minor Materials API change (mappings). (alteredq & mrdoob)
• Added Filters to WebGLRenderer
• python build.py --includes generates includes string

2010 11 30 - r30 (77.809 KB, gzip: 18.336 KB)

• Reflection and Refraction materials support in WebGLRenderer (alteredq)
• SmoothShading support on CanvasRenderer/MeshLambertMaterial
• MeshShaderMaterial for WebGLRenderer (alteredq)
• Removed RenderableFace4 from Projector/CanvasRenderer (maybe just temporary).
• Added extras folder with GeometryUtils, ImageUtils, SceneUtils and ShaderUtils (alteredq & mrdoob)
• Blender 2.5x Slim now the default exporter (old exporter removed).

2010 11 17 - r29 (69.563 KB)

• New materials API Still work in progress, but mostly there. (alteredq & mrdoob)
• Line clipping in CanvasRenderer (julianwa)
• Refactored CanvasRenderer and SVGRenderer. (mrdoob)
• Switched to Closure compiler.

2010 11 04 - r28 (62.802 KB)

• Loader class allows load geometry asynchronously at runtime. (alteredq)
• MeshPhongMaterial working with WebGLRenderer. (alteredq)
• Support for huge objects. Max 500k polys and counting. (alteredq)
• Projector.unprojectVector and Ray class to check intersections with faces (based on mindlapse work)
• Fixed Projector z-sorting (not as jumpy anymore).
• Fixed Orthographic projection (was y-inverted).
• Hmmm.. lib file size starting to get too big...

2010 10 28 - r25 (54.480 KB)

• WebGLRenderer now up to date with other renderers! (alteredq)
• .obj to .js python converter (alteredq)
• Blender 2.54 exporter
• Added MeshFaceMaterial (multipass per face)
• Reworked CanvasRenderer and SVGRenderer material handling

2010 10 06 - r18 (44.420 KB)

• Added PointLight
• CanvasRenderer and SVGRenderer basic lighting support (ColorStroke/ColorFill only)
• Renderer > Projector. CanvasRenderer, SVGRenderer and DOMRenderer do not extend anymore
• Added computeCentroids method to Geometry

2010 09 17 - r17 (39.487 KB)

• Added Light, AmbientLight and DirectionalLight (philogb)
• WebGLRenderer basic lighting support (philogb)
• Memory optimisations

2010 08 21 - r16 (35.592 KB)

• Workaround for Opera bug (clearRect not working with context with negative scale)
• Additional Matrix4 and Vector3 methods

2010 07 23 - r15 (32.440 KB)

• Using new object UV instead of Vector2 where it should be used
• Added Mesh.flipSided boolean (false by default)
• CanvasRenderer was handling UVs at 1,1 as bitmapWidth, bitmapHeight (instead of bitmapWidth - 1, bitmapHeight - 1)
• ParticleBitmapMaterial.offset added
• Fixed gap when rendering Face4 with MeshBitmapUVMappingMaterial

2010 07 17 - r14 (32.144 KB)

• Refactored CanvasRenderer (more duplicated code, but easier to handle)
• Face4 now supports MeshBitmapUVMappingMaterial
• Changed order of *StrokeMaterial parameters. Now it's color, opacity, lineWidth.
• BitmapUVMappingMaterial > MeshBitmapUVMappingMaterial
• ColorFillMaterial > MeshColorFillMaterial
• ColorStrokeMaterial > MeshColorStrokeMaterial
• FaceColorFillMaterial > MeshFaceColorFillMaterial
• FaceColorStrokeMaterial > MeshFaceColorStrokeMaterial
• ColorStrokeMaterial > LineColorMaterial
• Rectangle.instersects returned false with rectangles with 0px witdh or height

2010 07 12 - r13 (29.492 KB)

• Added ParticleCircleMaterial and ParticleBitmapMaterial
• Particle now use ParticleCircleMaterial instead of ColorFillMaterial
• Particle.size > Particle.scale.x and Particle.scale.y
• Particle.rotation.z for rotating the particle
• SVGRenderer currently out of sync

2010 07 07 - r12 (28.494 KB)

• First version of the WebGLRenderer (ColorFillMaterial and FaceColorFillMaterial by now)
• Matrix4.lookAt fix (CanvasRenderer and SVGRenderer now handle the -Y)
• Color now using 0-1 floats instead of 0-255 integers

2010 07 03 - r11 (23.541 KB)

• Blender 2.5 exporter (utils/export_threejs.py) now exports UV and normals (Thx kikko)
• Scene.add > Scene.addObject
• Enabled Scene.removeObject

2010 06 22 - r10 (23.959 KB)

• Changed Camera system. (Thx Paul Brunt)
• Object3D.overdraw = true to enable CanvasRenderer screen space point expansion hack.

2010 06 20 - r9 (23.753 KB)

• JSLinted.
• autoClear property for renderers.
• Removed SVG rgba() workaround for WebKit. (WebKit now supports it)
• Fixed matrix bug. (transformed objects outside the x axis would get infinitely tall :S)

2010 06 06 - r8 (23.496 KB)

• Moved UVs to Geometry.
• CanvasRenderer expands screen space points (workaround for antialias gaps).
• CanvasRenderer supports BitmapUVMappingMaterial.

2010 06 05 - r7 (22.387 KB)

• Added Line Object.
• Workaround for WebKit not supporting rgba() in SVG yet.
• No need to call updateMatrix(). Use .autoUpdateMatrix = false if needed. (Thx Gregory Athons).

2010 05 17 - r6 (21.003 KB)

• 2d clipping on CanvasRenderer and SVGRenderer
• clearRect optimisations on CanvasRenderer

2010 05 16 - r5 (19.026 KB)

• Removed Class.js dependency
• Added THREE namespace
• Camera.x -> Camera.position.x
• Camera.target.x > Camera.target.position.x
• ColorMaterial > ColorFillMaterial
• FaceColorMaterial > FaceColorFillMaterial
• Materials are now multipass (use array)
• Added ColorStrokeMaterial and FaceColorStrokeMaterial
• geometry.faces.a are now indexes instead of references

2010 04 26 - r4 (16.274 KB)

• SVGRenderer Particle rendering
• CanvasRenderer uses context.setTransform to avoid extra calculations

2010 04 24 - r3 (16.392 KB)

• Fixed incorrect rotation matrix transforms
• Added Plane and Cube primitives

2010 04 24 - r2 (15.724 KB)

• Improved Color handling

2010 04 24 - r1 (15.25 KB)

• First alpha release