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Toggle Rects
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| height: 400 |
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| <script async src=https://CDN.JSDelivr.net/npm/p5></script> | |
| <script defer src=sketch.js></script> |
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| /** | |
| * Toggle Rects (v1.1.3) | |
| * GoToLoop (2017-Dec-26) | |
| * | |
| * Forum.Processing.org/two/discussion/25722/click-event-on-rect-object#Item_2 | |
| * | |
| * Bl.ocks.org/GoSubRoutine/78bcd2ae59f6db72d5e6736589d2856b | |
| * Alpha.Editor.p5js.org/zusamarehan/sketches/B1GpXWlQf | |
| */ | |
| "use strict"; | |
| const ROWS = 3, COLS = 3, GRID = ROWS*COLS, rects = Array(GRID); | |
| function setup() { | |
| createCanvas(400, 400).mousePressed(toggleRect); | |
| rectMode(CORNER).colorMode(RGB).noLoop(); | |
| stroke(Rect.STROKE).strokeWeight(Rect.BOLD); | |
| createRectGrid(rects); | |
| } | |
| function draw() { | |
| background(Rect.BG); | |
| for (const b of rects) b.display(); | |
| } | |
| function toggleRect() { | |
| //function toggleRect(evt) { | |
| // _onmousedown(evt); // workaround for mouseButton, mouseX & mouseY! | |
| // evt.preventDefault(); | |
| // evt.stopPropagation(); | |
| switch (mouseButton) { | |
| case RIGHT: // clear all | |
| for (const b of rects) b.fills = false; | |
| return redraw(); | |
| case CENTER: // toggle all | |
| for (const b of rects) b.fills ^= true; | |
| return redraw(); | |
| default: // toggle clicked at | |
| for (const b of rects) if (b.isMouseInside()) return redraw(b.fills ^= true); | |
| } | |
| } | |
| function createRectGrid(arr=Array(GRID)) { | |
| for (let idx = 0, y = 0; y < ROWS; ++y) for (let x = 0; x < COLS; ++x, ++idx) | |
| arr[idx] = new Rect(x*Rect.W, y*Rect.H); | |
| return arr; | |
| } | |
| class Rect { | |
| static get BG() { | |
| delete this.BG; | |
| return this.BG = color(0); | |
| } | |
| static get ON() { | |
| delete this.ON; | |
| return this.ON = color('lime'); | |
| } | |
| static get OFF() { | |
| delete this.OFF; | |
| return this.OFF = color(0o340); | |
| } | |
| static get STROKE() { | |
| delete this.STROKE; | |
| return this.STROKE = color(150); | |
| } | |
| static get BOLD() { | |
| delete this.BOLD; | |
| return this.BOLD = 5; | |
| } | |
| static get W() { | |
| delete this.W; | |
| return this.W = width/3 | 0; | |
| } | |
| static get H() { | |
| delete this.H; | |
| return this.H = height>>2; | |
| } | |
| constructor(x=0, y=0) { | |
| this.x = x, this.y = y, this.fills = false; | |
| } | |
| display() { | |
| const {x, y, fills} = this, {W, H, ON, OFF} = this.constructor; | |
| fill(fills && ON || OFF).rect(x, y, W, H); | |
| return this; | |
| } | |
| isMouseInside() { | |
| const {x, y} = this, {W, H} = this.constructor; | |
| return mouseX >= x && mouseX < x+W && mouseY >= y && mouseY < y+H; | |
| } | |
| } |
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