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Damper Balls
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| height: 150 |
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| <script defer src=http://cdn.JsDelivr.net/npm/p5></script> | |
| <script defer src=sketch.js></script> |
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| /** | |
| * Damper Balls (v1.1) | |
| * KristianP89 (2017-Jun-05) | |
| * Modded GoToLoop | |
| * | |
| * Forum.Processing.org/two/discussion/22925/ | |
| * p5-easing-how-can-i-do-easing-with-a-function-value-duration- | |
| * instead-of-creating-new-variables#Item_5 | |
| * | |
| * Bl.ocks.org/GoSubRoutine/fa085945d45152786698f44a9523ccac | |
| */ | |
| "use strict"; | |
| const DAMPERS = 6, BOLD = 1.5, HEIGHT = 150, CY = HEIGHT >> 1, | |
| dampers = new Set; | |
| let bg; | |
| function setup() { | |
| windowResized(); | |
| colorMode(HSL).ellipseMode(CENTER); | |
| strokeWeight(BOLD).stroke(0).frameRate(60); | |
| bg = color(100, 50, 90); | |
| for (let x = width/DAMPERS, c = 360/DAMPERS | 0, i = 0; i < DAMPERS; ++i) | |
| dampers.add(new Damper(x * (i + 1), CY, color(c*i, 50, 50))); | |
| } | |
| function draw() { | |
| background(bg); | |
| let x = mouseX; | |
| for (const d of dampers) ( { x } = d.update(x).display() ); | |
| } | |
| function windowResized() { | |
| const { marginLeft, marginRight } = getComputedStyle(canvas.parentElement), | |
| w = windowWidth - round(float(marginLeft) + float(marginRight)); | |
| resizeCanvas(w, HEIGHT, true); | |
| } | |
| class Damper { | |
| static get FACTOR() { return .05; } | |
| static get DIAM() { return CY; } | |
| constructor(x = 0, y = 0, col = 0) { this.x = x, this.y = y, this.c = col; } | |
| update(x = 0) { this.x += Damper.FACTOR * (x - this.x); return this; } | |
| display() { fill(this.c).ellipse(this.x, this.y, Damper.DIAM); return this; } | |
| } |
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