This README should be updated as the code changes. Replace this placeholder text and use this README as a design journal to record your process. Be sure to use complete sentences, and you can reference your sketch which will appear above. The explanation should be short but complete, roughly 100 words.
Also update both images keeping their original sizes: preview.jpg (960x500) and thumbnail.png (230x120).
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.1/p5.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.1/addons/p5.dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/seedrandom/2.4.3/seedrandom.min.js""></script>
<script src="https://d3js.org/d3-random.v1.min.js"></script>
<script language="javascript" type="text/javascript" src="z_purview_helper.js"></script>
<script language="javascript" type="text/javascript" src="sketch.js"></script>
<style>
body { padding: 0; margin: 0; }
.inner { position: absolute; }
#controls {
font: 300 12px "Helvetica Neue";
padding: 5;
margin: 5;
background: #f0f0f0;
opacity: 0.0;
-webkit-transition: opacity 0.2s ease;
-moz-transition: opacity 0.2s ease;
-o-transition: opacity 0.2s ease;
-ms-transition: opacity 0.2s ease;
}
#controls:hover { opacity: 0.9; }
</style>
</head>
<body style="background-color:white">
<div class="outer">
<div class="inner">
<div id="canvasContainer"></div>
</div>
<div class="inner" id="controls" height="500px">
<table>
<tr>
<td>(future interface here)</td>
<td id="selector1Container"></td>
</tr>
</table>
</div>
</div>
</table>
</body>
const canvasWidth = 960;
const canvasHeight = 500;
function setup () {
// create the drawing canvas, save the canvas element
main_canvas = createCanvas(canvasWidth, canvasHeight);
// position each element on the page
main_canvas.parent('canvasContainer');
// rotation in degrees
angleMode(DEGREES);
}
// global variables for colors
const bg_color = "#c6bdab";
const fg_color1 = "#5b412a";
const fg_color2 = "#7b611a";
const stroke_color = "#c78a5b";
function draw () {
// background color
background(bg_color);
// stroke color
stroke(stroke_color)
// move to position1, rotate, draw "head" ellipse
push();
translate(960/4, 500/2);
rotate(4);
fill(fg_color1);
ellipse(0, 0, 300, 400);
// set fill to match background color
fill(bg_color);
// draw two eyes
ellipse(-50, -80, 50, 30);
ellipse( 50, -80, 50, 30);
// set fill back to foreground for eyeballs
fill(fg_color1);
ellipse(-60, -80, 20, 20);
ellipse( 40, -80, 20, 20);
// mouth-hole with background color
fill(bg_color);
ellipse( 0, 70, 150, 20);
pop();
// move to position2, rotate, draw "head" ellipse
push();
translate(3*960/4, 500/2);
rotate(30);
fill(fg_color2);
ellipse(0, 0, 300, 400);
// set fill to match background color
fill(bg_color);
// draw two eyes
ellipse(-50, -80, 50, 30);
ellipse( 50, -80, 50, 30);
// set fill back to foreground for eyeballs
fill(fg_color2);
ellipse(-60, -80, 20, 20);
ellipse( 40, -80, 20, 20);
// mouth-hole with background color
fill(bg_color);
ellipse( 0, 70, 150, 20);
pop();
}
function keyTyped() {
if (key == '!') {
saveBlocksImages();
}
else if (key == '@') {
saveBlocksImages(true);
}
}
// 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);
// call this function after 1 second
setTimeout(function(){
p5.prototype.downloadFile(imageData, 'thumbnail.png', 'png');
}, 1000);
}