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Pomax
2020-09-19 22:51:19 -07:00
parent 4c0e71cd4a
commit d77d3649b6
27 changed files with 97 additions and 61 deletions
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8
docs/chapters/tracing/distance-function.js
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@@ -28,11 +28,15 @@ draw() {
plotDistanceFunction(w, h, len) {
noFill();
// There is no way we're capturing the distance function as a nice
// easy function, so instead we're going to do the next best thing:
// sample the curve at a number of points, and then construct the
// function plot as we walk from one sample to the next.
let LUT = curve.getLUT(this.steps * 10);
let d = 0;
start();
vertex(0,0);
for(let i=1, e=LUT.length, p1, p2; i<e; i++) {
for(let i=1, e=LUT.length, p1, p2, d=0; i<e; i++) {
p1 = LUT[i-1];
p2 = LUT[i];
d += dist(p1.x, p1.y, p2.x, p2.y);