I hereby claim:
- I am postspectacular on github.
- I am toxi (https://keybase.io/toxi) on keybase.
- I have a public key ASChmJFjwANWhFE5SMqUl6TX65dPobiDLv4CtgE0WgIxIQo
To claim this, I am signing this object:
postspectacular
/ 00-sigmoid-approx.ts
Last active
November 2, 2019 20:31
Sigmoid versions (AssemblyScript)
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| // uses Math.exp() approximation from: | |
| // https://www.musicdsp.org/en/latest/Other/222-fast-exp-approximations.html | |
| // @ts-ignore: decorator | |
| @inline | |
| function fastexp9(x: f64): f64 { | |
| // prettier-ignore | |
| return (362880+x*(362880+x*(181440+x*(60480+x*(15120+x*(3024+x*(504+x*(72+x*(9+x)))))))))*2.75573192e-6; | |
| } |
postspectacular
/ accessors.ts
Last active
October 14, 2019 15:25
Super slow numeric property accessors - why is [0] / [1] access 110x slower than .x/.y?
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| import { bench } from "@thi.ng/bench"; | |
| import { map, range } from "@thi.ng/transducers"; | |
| export class Vec2 { | |
| buf: Float32Array; | |
| constructor(buf: ArrayBuffer, off: number) { | |
| this.buf = new Float32Array(buf, off, 2); | |
| } |
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| function tokenizeSexpr(src) { | |
| let curr = ""; | |
| const scopes = [[]]; | |
| const $word = () => { | |
| if (curr) { | |
| scopes[scopes.length - 1].push(curr); | |
| curr = ""; | |
| } | |
| }; | |
| for(let i = 0; i < src.length; i++) { |
postspectacular
/ petecory.ts
Last active
July 29, 2019 22:22
https://demo.thi.ng/umbrella/geom-convex-hull/ (Refactored & simplified version of code from: http://www.petecorey.com/blog/2019/07/29/clipping-convex-hulls-with-thing/)
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| import { | |
| area, | |
| centroid, | |
| clipConvex, | |
| convexHull, | |
| points, | |
| polygon, | |
| rect, | |
| scatter, | |
| withAttribs |
postspectacular
/ hello-ast.js
Last active
June 14, 2019 02:15
@thi.ng/shader-ast WIP codegen example w/ multiple output targets (GLSL & JS)
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| // // // // | |
| // ///// // //// // //// ///// //// ///// ////// | |
| // // ///// // ///// // // // // ////// // // // | |
| // //// // // ///// // // ////// // ///// //// // | |
| // // // // // // // // // // // // // // | |
| // ///// // // ///// ///// //// // ///// ///// /// | |
| // | |
| // Head over to thi.ng/shader-ast for more details | |
| const ast = require("@thi.ng/shader-ast"); |
postspectacular
/ deform.vex
Last active
May 8, 2019 14:45
Code for comment: http://www.entagma.com/analytical-foam/#comment-40052
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| // deform code | |
| vector4 planes[] = point(1, "planes", @id); | |
| foreach(vector4 plane; planes) { | |
| vector n = set(plane.x, plane.y, plane.z); | |
| float d = dot(n, @P) + plane.w; | |
| // check if point is "above" intersection plane | |
| // since the plane normal always points away from each sphere's center | |
| // this will select all points intersecting a neighbor sphere | |
| if (d > 0) { |
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| import { DisjointSet } from "@thi.ng/adjacency"; | |
| import { cosineColor, GRADIENTS } from "@thi.ng/color"; | |
| import { identity, partial } from "@thi.ng/compose"; | |
| import { serialize } from "@thi.ng/hiccup"; | |
| import { rect, svg, text } from "@thi.ng/hiccup-svg"; | |
| import { fitClamped, wrap } from "@thi.ng/math"; | |
| import { IRandom, Smush32 } from "@thi.ng/random"; | |
| import { | |
| buildKernel2d, | |
| comp, |
postspectacular
/ wolfram.js
Created
March 10, 2019 15:18
Transducer based, branch-less 1D Wolfram automata (textmode)
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| const tx = require("@thi.ng/transducers"); | |
| const txb = require("@thi.ng/transducers-binary"); | |
| // ANSI clear screen esc seq | |
| const CLEAR = "\x1b[2J\x1b[;H"; | |
| // CA dimensions | |
| const WIDTH = 72; | |
| const HEIGHT = 24; |
postspectacular
/ rulegen.ts
Last active
March 4, 2018 19:25
@thi.ng/hiccup-css example to generate tachyons.css width & height rules incl. their media query versions
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| import * as fs from "fs"; | |
| import * as css from "@thi.ng/hiccup-css"; | |
| const mediaQueries = [ | |
| [""], | |
| ["-ns", "--breakpoint-no-small"], | |
| ["-m", "--breakpoint-medium"], | |
| ["-l", "--breakpoint-large"] | |
| ]; |
postspectacular
/ keybase.md
Created
April 9, 2017 20:37