The aim of this project is to create a lightweight 3D engine with a very low level of abstraction (aka for dummies). Currently there is no documentation available but feel free to use the examples as a reference and/or read the source code. However, be aware that the API may change from revision to revision breaking compatibility.

The engine can render using <canvas>, <svg> and WebGL.

More info...

Other <canvas> based engines: pre3d, pvjs, jsgl, k3d, ... WebGL based: WebGLU, GLGE, C3DL, Copperlicht, SpiderGL, SceneJS, ...

Materials

Particles

Download the minified library and include it in your html.

<script type="text/javascript" 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 type="text/javascript">

	var camera, scene, renderer;

	init();
	setInterval( loop, 1000 / 60 );

	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() * 0x808008 + 0x808080 } ) );
			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 loop() {

		renderer.render( scene, camera );

	}

</script>

For creating a customised version of the library, including the source files in this order would be a good way to start:

<script type="text/javascript" src="../src/Three.js"></script>
<script type="text/javascript" src="../src/core/Color.js"></script>
<script type="text/javascript" src="../src/core/Vector2.js"></script>
<script type="text/javascript" src="../src/core/Vector3.js"></script>
<script type="text/javascript" src="../src/core/Vector4.js"></script>
<script type="text/javascript" src="../src/core/Ray.js"></script>
<script type="text/javascript" src="../src/core/Rectangle.js"></script>
<script type="text/javascript" src="../src/core/Matrix3.js"></script>
<script type="text/javascript" src="../src/core/Matrix4.js"></script>
<script type="text/javascript" src="../src/core/Vertex.js"></script>
<script type="text/javascript" src="../src/core/Face3.js"></script>
<script type="text/javascript" src="../src/core/Face4.js"></script>
<script type="text/javascript" src="../src/core/UV.js"></script>
<script type="text/javascript" src="../src/core/Geometry.js"></script>
<script type="text/javascript" src="../src/cameras/Camera.js"></script>
<script type="text/javascript" src="../src/lights/Light.js"></script>
<script type="text/javascript" src="../src/lights/AmbientLight.js"></script>
<script type="text/javascript" src="../src/lights/DirectionalLight.js"></script>
<script type="text/javascript" src="../src/lights/PointLight.js"></script>
<script type="text/javascript" src="../src/objects/Object3D.js"></script>
<script type="text/javascript" src="../src/objects/Mesh.js"></script>
<script type="text/javascript" src="../src/objects/Particle.js"></script>
<script type="text/javascript" src="../src/objects/Line.js"></script>
<script type="text/javascript" src="../src/materials/Material.js"></script>
<script type="text/javascript" src="../src/materials/LineBasicMaterial.js"></script>
<script type="text/javascript" src="../src/materials/MeshBasicMaterial.js"></script>
<script type="text/javascript" src="../src/materials/MeshLambertMaterial.js"></script>
<script type="text/javascript" src="../src/materials/MeshPhongMaterial.js"></script>
<script type="text/javascript" src="../src/materials/MeshDepthMaterial.js"></script>
<script type="text/javascript" src="../src/materials/MeshNormalMaterial.js"></script>
<script type="text/javascript" src="../src/materials/MeshFaceMaterial.js"></script>
<script type="text/javascript" src="../src/materials/ParticleBasicMaterial.js"></script>
<script type="text/javascript" src="../src/materials/ParticleCircleMaterial.js"></script>
<script type="text/javascript" src="../src/materials/textures/Texture.js"></script>
<script type="text/javascript" src="../src/scenes/Scene.js"></script>
<script type="text/javascript" src="../src/renderers/Projector.js"></script>
<script type="text/javascript" src="../src/renderers/CanvasRenderer.js"></script>
<script type="text/javascript" src="../src/renderers/SVGRenderer.js"></script>
<script type="text/javascript" src="../src/renderers/WebGLRenderer.js"></script>
<script type="text/javascript" src="../src/renderers/renderables/RenderableFace3.js"></script>
<script type="text/javascript" src="../src/renderers/renderables/RenderableFace4.js"></script>
<script type="text/javascript" src="../src/renderers/renderables/RenderableParticle.js"></script>
<script type="text/javascript" src="../src/renderers/renderables/RenderableLine.js"></script>

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