Computer Graphics & Visualization @ufrj.br
Canvas primerCanvas primer IISVG IntroMinimal WebGL ProgramWebGL primer with reglShadertoy style drawingTransformation demoModelview DemoModel, View and Projection DemoWebGL CubeCatmull Clark SubdivisionThree.js basicsPhong Illumination modelHalf-edge data structureIterated Function SystemsRaytracingTextured sphereEnvironment mappingPhysical animation with shape matchingShape matching2D GJK and EPA algorithmsOmohundro balltree construction algorithmsPlatonic Solids PlaygroundElliptic billiards 3-periodics in space-time3D LabyrinthBrush drawingBump mappingFractal TerrainModel viewerKeyframe animationSimple Adaptive Mosaic EffectsWallpaper GroupsRay marchingVolume rendering with slice compositingDisplaying 3D RBFs with ray marchingFunções 2D úteisRandom space-filling curvesGPU-IO3D Apollonian Sphere PackingsCircle inversion fractalsApollonian gasket construction by inversionSmooth PolygonDocument image segmentationB-SplinesStencil bufferNoise LoopsSimplex noise exerciserDeformation with RBFsRandom shapes in a gridHobby curvesLane-Riesenfeld subdivision
Textured plane
image = loadImage(await randomImage(512, 512, 'butterfly'))
texture = {
let tex = new THREE.CanvasTexture(image);
tex.wrapS = tex.wrapT = THREE.RepeatWrapping;
tex.offset.set(uoffset, voffset);
tex.repeat.set(urepeat, vrepeat);
return tex;
}
plane = {
const geometry = new THREE.PlaneGeometry();
const material = new THREE.MeshBasicMaterial({
color: 0xffffff,
side: THREE.DoubleSide,
map: texture
});
const plane = new THREE.Mesh(geometry, material);
return plane;
}
renderer = new THREE.WebGLRenderer({
canvas: html`<canvas width=640 height=480>`
})
camera = {
let camera = new THREE.PerspectiveCamera(60, 4 / 3, 0.1, 100);
camera.position.set(0, 0, 1.5);
return camera;
}
light = {
let light = new THREE.DirectionalLight(0xffffff, 1);
light.position.set(1, 1, 10);
return light;
}
scene = {
let scene = new THREE.Scene();
scene.background = new THREE.Color(0xCCCCCC);
scene.add(plane);
scene.add(light);
return scene;
}
controls = new THREE.OrbitControls(camera, renderer.domElement)
{
for (let frame = 0; ; frame++) {
renderer.render(scene, camera);
yield frame;
}
}
THREE = {
const THREE = (window.THREE = await require('three@0.128'));
await require('three@0.128/examples/js/controls/OrbitControls.js').catch(
() => {}
);
await require('three@0.128/examples/js/controls/TrackballControls.js').catch(
() => {}
);
return THREE;
}
async function randomImage(sizeOrWidth = null, height = sizeOrWidth, term='flower') {
const size = sizeOrWidth ? `/${+sizeOrWidth}x${+height}` : '';
return (await fetch(`https://source.unsplash.com/${+sizeOrWidth}x${+height}/?${term}`, {
method: 'head',
cache: 'no-store',
})).url;
}
function loadImage(src) {
const img = DOM.element('img', { crossorigin: 'anonymous', src });
return img.decode().then(() => img);
}
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.