kchapelier

Schlick's Approximation of the fresnel factor

https://en.wikipedia.org/wiki/Schlick%27s_approximation

http://filmicworlds.com/blog/everything-has-fresnel/

float NdotL = max( 0.0, dot( PixelNormal, LightDir ) );
float fresnelFactor = SpecularColor + ( 1.0 - SpecularColor ) * pow( ( 1.0 - NdotL ), 5.0 );

kchapelier

http://graphics.stanford.edu/data/3Dscanrep/
https://www.cc.gatech.edu/projects/large_models/
https://gumroad.com/l/xAQxj
https://www.myminifactory.com/scantheworld/
https://sketchfab.com/britishmuseum
http://lincoln3dscans.co.uk/

kchapelier

//Return random directions, spherical angle pairs theta [0,PI) and phi [0,TWO_PI), distributed uniformly over a sphere
//Pairs generated with theta=random(PI) and phi=random(TWO_PI) have a higher density around the poles.
//See spherical coordinates: https://en.wikipedia.org/wiki/Spherical_coordinate_system
//Optimalization by Dan Gries

//https://pastebin.com/7uPYaA8G

function randomThetaPhi () {
    "use strict";
    

kchapelier

// based on https://warpycode.wordpress.com/2009/04/13/computing-a-1d-gaussian-kernel/
// see http://www.stat.wisc.edu/~mchung/teaching/MIA/reading/diffusion.gaussian.kernel.pdf.pdf for more info

var gaussianKernel1d = (function () {
    var sqr2pi = Math.sqrt(2 * Math.PI);

    return function gaussianKernel1d (size, sigma) {
        "use strict";

        // ensure size is even and prepare variables

kchapelier

/**
 * Combine indexed and non-indexed BufferGeometry into a new indexed BufferGeometry. All missing uniforms are set to 0.
 * @param {array} geometries Array of THREE.BufferGeometry instances
 * @returns {BufferGeometry}
 */
function mergeBufferGeometries (geometries) {
    var indexLength = 0,
        verticesLength = 0,
        attributesInfos = {},
        geometriesInfos = [],

kchapelier

Things to read... and properly assimilate

The presence of a link here doesn't imply endorsement.

PBR stuff:

• http://www.pbr-book.org/
• http://blog.selfshadow.com/publications/
• https://learnopengl.com/#!PBR/Theory
• https://www.marmoset.co/posts/basic-theory-of-physically-based-rendering/

kchapelier

/***
Undoing the hacks of https://www.exif.co/ with unsophisticated javascript.
 
As an artist, the best way to protect your work is to approach sharing technologies and third party services with a healthy dose of scepticism and to always clearly specify the license under which your work is made available on the Internet. 
***/

// click on an image served by exif.co to replace it with a canvas containing the full image
document.body.addEventListener('click', function (e) {
  if(e.target.parentNode && e.target.parentNode.classList.contains('js-exif-image')) {
    var element = e.target.parentNode,

kchapelier

// executed directly on https://en.wikipedia.org/wiki/Unicode_block

var planes = [],
    blocks = [],
    plane,
    pos;
    
var planesFirstLine = document.querySelectorAll('#collapsibleTable3 tr:nth-of-type(3) th');
var planesSecondLine = document.querySelectorAll('#collapsibleTable3 tr:nth-of-type(5) th');

kchapelier

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kchapelier

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