Computer Graphics & Visualization @ufrj.br
Canvas primerCanvas primer IISVG IntroMinimal WebGL ProgramShadertoy 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 animationTextured planeSimple 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
WebGL primer with regl
createRegl = require("regl")
canvas = html`<canvas width=300 height=200>`
regl = createRegl(canvas)
drawTriangle = regl({
// In a draw call, we can pass the shaders source code to regl
frag: `
precision mediump float;
uniform vec4 color;
void main () {
gl_FragColor = color;
}`,
vert: `
attribute vec2 position;
void main () {
gl_Position = vec4(position, 0, 1);
}`,
// These are the vertex attributes that will be passed
// on to the vertex shader
attributes: {
position: [
[-1, 0],
[0, -1],
[1, 1]
]
},
// These are the uniforms, i.e., global shader variables that are set
// from inside the host (CPU) program
uniforms: {
color: [1, 0, 0, 1]
},
// Total number of vertices to be fed into the pipeline
count: 3
})
draw = {
// First clear the frame buffer
regl.clear({
color: [0, 0, 0, 1]
})
// And then draw the triangle
drawTriangle()
}
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.