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Last active September 26, 2016 14:46
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Digital Suede w/Pixi
Raw
DigitalSuede.md
Raw
index.html
<html>
<head>
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/4.0.0/pixi.min.js"></script>
<link rel="stylesheet" type="text/css" href="main.css">
</head>
<body>
</body>
<script src="victor.js"></script>
<script src="index.js"></script>
</html>
Raw
index.js
(function() {
function random(a, b) {
return Math.floor(Math.random()*(b-a+1)+a);
}
var SIZE = [1080, 1920];
var HEIGHT;
var WIDTH;
var RATIO = SIZE[0] / SIZE[1];
var RENDERER = PIXI.autoDetectRenderer(SIZE[0], SIZE[1], {
backgroundColor: 0xFF4968
});
var STAGE = new PIXI.Container(0xFFFFFF, true);
// var ROOT_DIRECTION = new Victor(random(-20, 20), random(-20, 20));
var ROOT_DIRECTION = new Victor(0.5, -1);
function initialize() {
document.body.appendChild(RENDERER.view);
window.STAGE = STAGE;
STAGE.interactive = true;
var circle = new PIXI.Graphics();
STAGE.addChild(circle);
var interactionManager = new PIXI.interaction.InteractionManager(RENDERER);
var isMousedown;
var previousX = 0;
var previousY = 0;
function onDown() {
isMousedown = true;
previousX = this.eventData.data.global.x;
previousY = this.eventData.data.global.y;
};
function onMove() {
if(isMousedown) {
var newX = this.eventData.data.global.x;
var newY = this.eventData.data.global.y;
var deltaX = newX - previousX;
var deltaY = newY - previousY;
if(Math.abs(deltaX) > 10 || Math.abs(deltaY) > 10) {
var direction = new Victor(newX - previousX, newY - previousY).normalize();
var angle = ROOT_DIRECTION.angle() - direction.angle();
var color;
if(Math.abs(angle) < 0.75) { // erase
color = 0xFF4968;
var brush = PIXI.Sprite.fromImage('suedebrush.png');
brush.tint = color;
brush.position.x = newX;
brush.position.y = newY;
brush.anchor.x = 0.5;
brush.anchor.y = 0.5;
brush.alpha = angle + 0.5;
brush.rotation = random(1, 3);
STAGE.addChild(brush);
} else { // paint
color = 0xDC3E59;
var brush = PIXI.Sprite.fromImage('suedebrush.png');
brush.tint = color;
brush.position.x = newX;
brush.position.y = newY;
brush.anchor.x = 0.5;
brush.anchor.y = 0.5;
brush.rotation = random(1, 3);
STAGE.addChild(brush);
}
}
previousX = newX;
previousY = newY;
}
};
function onUp() {
isMousedown = false;
};
interactionManager
.on('mousedown', onDown)
.on('mousemove', onMove)
.on('mouseup', onUp)
.on('touchstart', onDown)
.on('touchmove', onMove)
.on('touchend', onUp);
var modifierX = window.devicePixelRatio * 2;
var modifierY;
if(window.devicePixelRatio == 1) {
modifierY = window.devicePixelRatio * 0.9;
} else if(window.devicePixelRatio == 2 || window.devicePixelRatio < 3) {
modifierY = 2.5;
} else if(window.devicePixelRatio >= 3) {
modifierY = 2.3;
}
for(var i=0; i<500; i++) {
var brush = PIXI.Sprite.fromImage('suedebrush.png');
var color = 0xDC3E59;
brush.tint = color;
brush.position.x = random(0, WIDTH * modifierX);
brush.position.y = random(HEIGHT * 0.1 * window.devicePixelRatio, HEIGHT * modifierY);
brush.anchor.x = 0.5;
brush.anchor.y = 0.5;
brush.rotation = random(1, 16);
STAGE.addChild(brush);
}
};
function animate() {
requestAnimationFrame(animate);
RENDERER.render(STAGE);
};
animate();
function resize() {
if(window.innerWidth / window.innerHeight >= RATIO) {
WIDTH = window.innerHeight * RATIO;
HEIGHT = window.innerHeight;
} else {
WIDTH = window.innerWidth;
HEIGHT = window.innerWidth / RATIO;
}
RENDERER.view.style.width = WIDTH + 'px';
RENDERER.view.style.height = HEIGHT + 'px';
};
window.onresize = resize;
resize();
initialize();
})();
Raw
main.css
body {
margin: 0;
background: #3a3a3a;
text-align: center;
display: flex;
align-items: center;
-webkit-transform: translate3d(0,0,0);
-moz-transform: translate3d(0,0,0);
transform: translate3d(0,0,0);
}
canvas {
margin: 0 auto;
}
Raw
victor.js
/*!
MIT License
Copyright (c) 2011 Max Kueng, George Crabtree
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
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