Sundials are always right side up. What if they were upside-down. You Just like the movie.
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July 26, 2018 02:08
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CC2 Assignment 1: Clock
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const CANVAS_WIDTH = 960; | |
const CANVAS_HEIGHT = 500; | |
function setup () { | |
// create the drawing canvas, save the canvas element | |
let main_canvas = createCanvas(CANVAS_WIDTH, CANVAS_HEIGHT); | |
main_canvas.parent('canvasContainer'); | |
// you can optionally add your own code here if you also have setup code | |
} | |
// Update this function to draw you own maeda clock | |
function draw () { | |
background(204); // light gray background | |
strokeWeight(8); // Stroke weight to 8 pixels | |
ellipse(480, 250, 190, 190); | |
// The rectangle draws on top of the ellipse | |
// because it comes after in the code | |
rect(500, 280, 260, 20); | |
quad(158, 55, 199, 14, 392, 66, 351, 107); | |
} | |
// do not alter or remove this function | |
function keyTyped() { | |
if (key == '!') { | |
saveBlocksImages(); | |
} | |
else if (key == '@') { | |
saveBlocksImages(true); | |
} | |
} |
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<head> | |
<script src="http://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.0/p5.js"></script> | |
<script src="http://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.0/addons/p5.dom.js"></script> | |
<script language="javascript" type="text/javascript" src="z_purview_helper.js"></script> | |
<script language="javascript" type="text/javascript" src="clock1.js"></script> | |
</head> | |
<body style="background-color:white"> | |
<div class="outer"> | |
<div class="inner"> | |
<div id="canvasContainer"></div> | |
</div> | |
</div> | |
</table> | |
</body> |
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// note: this file is poorly named - it can generally be ignored. | |
// helper functions below for supporting blocks/purview | |
function saveBlocksImages(doZoom) { | |
if(doZoom == null) { | |
doZoom = false; | |
} | |
// generate 960x500 preview.jpg of entire canvas | |
// TODO: should this be recycled? | |
var offscreenCanvas = document.createElement('canvas'); | |
offscreenCanvas.width = 960; | |
offscreenCanvas.height = 500; | |
var context = offscreenCanvas.getContext('2d'); | |
// background is flat white | |
context.fillStyle="#FFFFFF"; | |
context.fillRect(0, 0, 960, 500); | |
context.drawImage(this.canvas, 0, 0, 960, 500); | |
// save to browser | |
var downloadMime = 'image/octet-stream'; | |
var imageData = offscreenCanvas.toDataURL('image/jpeg'); | |
imageData = imageData.replace('image/jpeg', downloadMime); | |
p5.prototype.downloadFile(imageData, 'preview.jpg', 'jpg'); | |
// generate 230x120 thumbnail.png centered on mouse | |
offscreenCanvas.width = 230; | |
offscreenCanvas.height = 120; | |
// background is flat white | |
context = offscreenCanvas.getContext('2d'); | |
context.fillStyle="#FFFFFF"; | |
context.fillRect(0, 0, 230, 120); | |
if(doZoom) { | |
// pixelDensity does the right thing on retina displays | |
var pd = this._pixelDensity; | |
var sx = pd * mouseX - pd * 230/2; | |
var sy = pd * mouseY - pd * 120/2; | |
var sw = pd * 230; | |
var sh = pd * 120; | |
// bounds checking - just displace if necessary | |
if (sx < 0) { | |
sx = 0; | |
} | |
if (sx > this.canvas.width - sw) { | |
sx = this.canvas.width - sw; | |
} | |
if (sy < 0) { | |
sy = 0; | |
} | |
if (sy > this.canvas.height - sh) { | |
sy = this.canvas.height - sh; | |
} | |
// save to browser | |
context.drawImage(this.canvas, sx, sy, sw, sh, 0, 0, 230, 120); | |
} | |
else { | |
// now scaledown | |
var full_width = this.canvas.width; | |
var full_height = this.canvas.height; | |
context.drawImage(this.canvas, 0, 0, full_width, full_height, 0, 0, 230, 120); | |
} | |
imageData = offscreenCanvas.toDataURL('image/png'); | |
imageData = imageData.replace('image/png', downloadMime); | |
p5.prototype.downloadFile(imageData, 'thumbnail.png', 'png'); | |
} |
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