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harmony.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Harmony - Procedural drawing tool</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
<style type="text/css">
* { color: #444; font-family:Monospace; font-size:12px; }
body { background-color: #fff; margin: 0px; overflow: hidden; }
#menu { position: absolute; width: 280px; background-color: #eee; margin: auto; padding: 5px 10px; text-align: center; text-transform: uppercase; visibility: hidden; }
input, select { text-transform: uppercase; text-align:center; }
#picker {
visibility: hidden;
position: absolute;
border: 1px solid #666;
width: 220px;
height:206px;
left: 300px;
top: -100px;
background-color: #fff;
}
#picker .yui-picker-controls,
#picker .yui-picker-swatch,
#picker .yui-picker-websafe-swatch {
display: none;
}
#picker-header {
background-color: #eee;
text-align: right;
}
#picker-content{
position: relative;
margin: 0;
padding: 0;
}
#closelink {
text-decoration: none;
}
#colorlinks{
padding: 2px;
}
#colorlinks a {
text-decoration: none;
border: 1px solid #666;
font-size: 16px;
margin: 4px
}
#strokelink {
background-color: #000;
}
#filllink {
background-color: #fff;
}
</style>
<script src="http://yui.yahooapis.com/3.1.0pr2/build/yui/yui-min.js"></script>
</head>
<body>
<div id="menu">Brush:</a>
<select id="selector"></select>
<input id="save" type="button" value="Save">
<input id="clear" type="button" value="Clear">
<div id="colorlinks">Stroke Color:<a href="#" id="strokelink"> </a> Fill Color:<a href="#" id="filllink"> </a></div>
</div>
<div id="container"></div>
<div id="picker">
<div id="picker-header"><a href="#" id="closelink">x<a><div>
<div id="picker-content"><div>
</div>
<script type="text/javascript">
YUI().use('yui2-colorpicker', function (Y) {
// This is a lightly modified version of the harmony sketching application
// created by Ricardo Cabello. It adds a color picker for setting stroke
// and fill colors
// http://mrdoob.com/projects/harmony/
// Sketchy, Shaded, Chrome, Fur, LongFur and Web are variations of the idea of connecting neightbour points
// first implemented (afaik) by Ze Frank's The Scribbler (http://www.zefrank.com/scribbler/)
// This code uses the MIT license:
// http://www.opensource.org/licenses/mit-license.php
var container, menu, selector, saveButton, clearButton, canvas, context, style, picker,
STYLES = ["sketchy", "shaded", "chrome", "fur", "longfur", "web", "", "squares", "ribbon", "", "circles", "grid"],
STYLE_MAP = {};
DEFAULT_STYLE = "sketchy",
SCREEN_WIDTH = window.innerWidth,
SCREEN_HEIGHT = window.innerHeight,
mouseX = 0,
mouseY = 0,
isMenuMouseOver = false,
isMouseDown = false,
colorTarget = 'stroke',
YAHOO = Y.YUI2,
Event = YAHOO.util.Event,
Dom = YAHOO.util.Dom;
Event.onAvailable('picker', function() {
var div = Dom.get('picker'),
pickerUp = false,
openPicker = function(e, what) {
if (pickerUp) {
closePicker(e);
} else {
colorTarget = what;
var xy = Dom.getXY(this)
xy[0] += 2;
xy[1] += 22;
Dom.setStyle(div, 'visibility', 'visible');
Dom.setXY(div, xy);
Event.stopEvent(e);
pickerUp = true;
}
},
closePicker = function(e) {
if (pickerUp) {
Dom.setStyle(div, 'visibility', 'hidden');
Dom.setY(div, -100);
Event.stopEvent(e);
pickerUp = false;
}
};
picker = new YAHOO.widget.ColorPicker("picker-content", {
showhsvcontrols: true,
showhexcontrols: true,
images: {
PICKER_THUMB: "http://yui.yahooapis.com/2.8.0r4/build/colorpicker/assets/picker_thumb.png",
HUE_THUMB: "http://yui.yahooapis.com/2.8.0r4/build/colorpicker/assets/hue_thumb.png"
}
});
picker.setValue([0, 0, 0], false);
picker.on("rgbChange", function(o) {
var newValue = o.newValue;
context.r = newValue[0];
context.g = newValue[1];
context.b = newValue[2];
if (colorTarget == 'fill') {
context.setFill(null, o.newValue);
} else {
context.setStroke(null, o.newValue);
}
Dom.setStyle(colorTarget + 'link', 'background-color', '#' + this.get('hex'));
});
Event.on('strokelink', 'click', openPicker, 'stroke');
Event.on('filllink', 'click', openPicker, 'fill');
Event.on('container', 'mousedown', closePicker);
Event.on('closelink', 'click', closePicker);
});
function randomColor() {
return Math.floor(Math.random() * 255);
};
Event.onAvailable('container', function () {
container = document.getElementById('container');
menu = document.getElementById('menu');
menu.style.left = ((SCREEN_WIDTH - menu.offsetWidth) / 2) + 'px';
menu.style.visibility = 'visible';
menu.addEventListener('mouseover', onMenuMouseOver, false);
menu.addEventListener('mouseout', onMenuMouseOut, false);
canvas = document.createElement("canvas");
canvas.width = SCREEN_WIDTH;
canvas.height = SCREEN_HEIGHT;
canvas.style.cursor = 'crosshair';
container.appendChild(canvas);
context = canvas.getContext("2d");
context.fillStyle = "rgb(255, 255, 255)";
context.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
/////////////////////////////////////////////////////////////////
// global state to persist color choice
context.state = {
stroke: {
rgb: [0, 0, 0],
alpha: 0.1
},
fill: {
rgb: [255, 255, 255],
alpha: 1
}
};
// updates the global state
context.rgba = function(state, alpha, rgb) {
if (alpha) {
state.alpha = alpha;
}
if (rgb) {
state.rgb = rgb;
}
return 'rgba(' + state.rgb.join() + ', ' + state.alpha + ')';
};
// sets the global stroke state
context.setStroke = function(alpha, rgb) {
this.strokeStyle = this.rgba(this.state.stroke, alpha, rgb);
};
// sets the global fill state
context.setFill = function(alpha, rgb) {
this.fillStyle = this.rgba(this.state.fill, alpha, rgb);
};
//////////////////////////////////////////////////////////////////
saveButton = document.getElementById('save');
saveButton.addEventListener('click', save, false);
clearButton = document.getElementById('clear');
clearButton.addEventListener('click', clear, false);
selector = document.getElementById('selector');
selector.addEventListener('change', onSelectorChange, false);
for (var i = 0; i < STYLES.length; i++)
{
var option = document.createElement("option");
option.id = i;
option.innerHTML = STYLES[i].toUpperCase();
selector.appendChild(option);
}
if (window.location.hash)
{
var hash = window.location.hash.substr(1,window.location.hash.length);
for (var i = 0; i < STYLES.length; i++)
{
if (hash == STYLES[i])
{
style = eval("new " + STYLES[i] + "(context)");
selector.selectedIndex = i;
break;
}
}
}
if (!style)
{
style = eval("new " + STYLES[0] + "(context)");
}
document.onmousedown = onDocumentMouseDown;
document.onmouseout = onCanvasMouseUp;
canvas.onmousedown = onCanvasMouseDown;
canvas.onmouseup = onCanvasMouseUp;
canvas.onmousemove = onCanvasMouseMove;
canvas.ontouchstart = onCanvasTouchStart;
canvas.ontouchend = onCanvasTouchEnd;
canvas.ontouchmove = onCanvasTouchMove;
});
function onDocumentMouseDown(e)
{
return isMenuMouseOver;
}
function onSelectorChange(e)
{
if (STYLES[selector.selectedIndex] == "")
return;
style.destroy();
style = eval("new " + STYLES[selector.selectedIndex] + "(context)");
window.location.hash = STYLES[selector.selectedIndex];
}
function onMenuMouseOver(e)
{
isMenuMouseOver = true;
}
function onMenuMouseOut(e)
{
isMenuMouseOver = false;
}
function ondocumentMouseDown(e)
{
return !isMenuMouseOver;
}
function onCanvasMouseDown(e)
{
isMouseDown = true;
style.strokeStart( mouseX, mouseY );
}
function onCanvasMouseUp(e)
{
isMouseDown = false;
style.strokeEnd( mouseX, mouseY );
}
function onCanvasMouseMove(e)
{
if (!e) var e = window.event;
mouseX = e.clientX;
mouseY = e.clientY;
if (!isMouseDown)
return;
style.stroke( mouseX, mouseY );
}
function onCanvasTouchStart(e)
{
if(e.touches.length == 1)
{
var touch = e.touches[0];
style.strokeStart( touch.pageX, touch.pageY );
}
return false;
}
function onCanvasTouchEnd(e)
{
if(e.touches.length == 1)
{
var touch = e.touches[0];
style.strokeEnd( touch.pageX, touch.pageY );
}
}
function onCanvasTouchMove(e)
{
if(e.touches.length == 1)
{
var touch = e.touches[0];
style.stroke( touch.pageX, touch.pageY );
}
}
function save()
{
window.open(canvas.toDataURL("image/png"),'mywindow');
}
function clear()
{
context.globalCompositeOperation = 'source-over';
context.fillStyle = "rgb(255, 255, 255)";
context.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
style = eval("new " + STYLES[selector.selectedIndex] + "(context)");
points = new Array();
count = 0;
}
// SAVING MY POOR SERVER :S (These classes are supposed to be on external files)
function chrome( context )
{
this.init( context );
}
chrome.prototype =
{
context: null,
prevMouseX: null, prevMouseY: null,
points: null, count: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
if (RegExp(" AppleWebKit/").test(navigator.userAgent))
this.context.globalCompositeOperation = 'darker';
this.points = new Array();
this.count = 0;
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
stroke: function( mouseX, mouseY )
{
this.points.push( [ mouseX, mouseY ] );
this.context.setStroke(0.1);
this.context.beginPath();
this.context.moveTo(this.prevMouseX, this.prevMouseY);
this.context.lineTo(mouseX, mouseY);
this.context.stroke();
for (var i = 0; i < this.points.length; i++)
{
var size = 0.2;
var dx = this.points[i][0] - this.points[this.count][0];
var dy = this.points[i][1] - this.points[this.count][1];
var d = dx * dx + dy * dy;
if (d < 1000)
{
this.context.setStroke(0.1, [randomColor(), randomColor(), randomColor()]);
this.context.beginPath();
this.context.moveTo( this.points[this.count][0] + (dx * size), this.points[this.count][1] + (dy * size));
this.context.lineTo( this.points[i][0] - (dx * size), this.points[i][1] - (dy * size));
this.context.stroke();
}
}
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
this.count ++;
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function circles( context )
{
this.init( context );
}
circles.prototype =
{
context: null,
prevMouseX: null, prevMouseY: null,
points: null, count: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
this.context.globalCompositeOperation = 'source-over';
this.points = new Array();
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
stroke: function( mouseX, mouseY )
{
this.points.push( [ mouseX, mouseY ] );
var dx = mouseX - this.prevMouseX;
var dy = mouseY - this.prevMouseY;
var d = Math.sqrt(dx * dx + dy * dy) * 2;
var d_half = d / 2;
var cx = Math.floor(mouseX / 100) * 100 + 50;
var cy = Math.floor(mouseY / 100) * 100 + 50;
var steps = Math.floor( Math.random() * 10 );
var step_delta = d / steps;
for (var i = 0; i < steps; i++)
{
this.context.setStroke(0.1);
this.context.beginPath();
this.context.arc( cx, cy, (steps - i) * step_delta, 0, Math.PI*2, true);
this.context.stroke();
}
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function fur( context )
{
this.init( context );
}
fur.prototype =
{
context: null,
prevMouseX: null, prevMouseY: null,
points: null, count: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
this.points = new Array();
this.count = 0;
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
stroke: function( mouseX, mouseY )
{
this.points.push( [ mouseX, mouseY ] );
this.context.setStroke(0.1);
this.context.beginPath();
this.context.moveTo(this.prevMouseX, this.prevMouseY);
this.context.lineTo(mouseX, mouseY);
this.context.stroke();
for (var i = 0; i < this.points.length; i++)
{
var size = 0.5;
var dx = this.points[i][0] - this.points[this.count][0];
var dy = this.points[i][1] - this.points[this.count][1];
var d = dx * dx + dy * dy;
if (d < 2000 && Math.random() > d / 2000)
{
this.context.setStroke(0.1);
this.context.beginPath();
this.context.moveTo( mouseX + (dx * size), mouseY + (dy * size));
this.context.lineTo( mouseX - (dx * size), mouseY - (dy * size));
this.context.stroke();
}
}
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
this.count ++;
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function grid( context )
{
this.init( context );
}
grid.prototype =
{
context: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
if (RegExp(" AppleWebKit/").test(navigator.userAgent))
this.context.globalCompositeOperation = 'darker';
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY ) {
this.context.setStroke(0.01);
},
stroke: function( mouseX, mouseY )
{
var cx = Math.round(mouseX / 100) * 100;
var cy = Math.round(mouseY / 100) * 100;
var dx = (cx - mouseX) * 10;
var dy = (cy - mouseY) * 10;
for (var i = 0; i < 50; i++)
{
this.context.beginPath();
this.context.moveTo( cx, cy );
this.context.quadraticCurveTo(mouseX + Math.random() * dx, mouseY + Math.random() * dy, cx, cy);
this.context.stroke();
}
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function longfur( context )
{
this.init( context );
}
longfur.prototype =
{
context: null,
points: null, count: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
this.context.globalCompositeOperation = 'source-over';
this.context.setStroke(0.05);
this.points = new Array();
this.count = 0;
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
},
stroke: function( mouseX, mouseY )
{
this.points.push( [ mouseX, mouseY ] );
for (var i = 0; i < this.points.length; i++)
{
var size = -Math.random();
var dx = this.points[i][0] - this.points[this.count][0];
var dy = this.points[i][1] - this.points[this.count][1];
var d = dx * dx + dy * dy;
if (d < 4000 && Math.random() > d / 4000)
{
this.context.beginPath();
this.context.moveTo( this.points[this.count][0] + (dx * size), this.points[this.count][1] + (dy * size));
this.context.lineTo( this.points[i][0] - (dx * size) + Math.random() * 2, this.points[i][1] - (dy * size) + Math.random() * 2);
this.context.stroke();
}
}
this.count ++;
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function ribbon( context )
{
this.init( context );
}
ribbon.prototype =
{
context: null,
mouseX: null, mouseY: null,
painters: null,
interval: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
// this.context.strokeStyle = "rgba( 0, 0, 0, 0.05 )";
// moved to strokeStart
this.context.globalCompositeOperation = 'source-over';
this.mouseX = SCREEN_WIDTH / 2;
this.mouseY = SCREEN_HEIGHT / 2;
this.painters = new Array();
for (var i = 0; i < 50; i++)
{
this.painters.push({ dx: SCREEN_WIDTH / 2, dy: SCREEN_HEIGHT / 2, ax: 0, ay: 0, div: 0.1, ease: Math.random() * 0.2 + 0.6 });
}
this.isDrawing = false;
this.interval = setInterval( bargs( function( _this ) { _this.update(); return false; }, this ), 1000/60 );
},
destroy: function()
{
clearInterval(this.interval);
},
strokeStart: function( mouseX, mouseY ) {
this.context.setStroke(0.05);
this.mouseX = mouseX;
this.mouseY = mouseY
for (var i = 0; i < this.painters.length; i++)
{
this.painters[i].dx = mouseX;
this.painters[i].dy = mouseY;
}
this.shouldDraw = true;
},
stroke: function( mouseX, mouseY )
{
this.mouseX = mouseX;
this.mouseY = mouseY;
},
strokeEnd: function( mouseX, mouseY )
{
},
update: function()
{
for (var i = 0; i < this.painters.length; i++)
{
this.context.beginPath();
this.context.moveTo(this.painters[i].dx, this.painters[i].dy);
this.painters[i].dx -= this.painters[i].ax = (this.painters[i].ax + (this.painters[i].dx - this.mouseX) * this.painters[i].div) * this.painters[i].ease;
this.painters[i].dy -= this.painters[i].ay = (this.painters[i].ay + (this.painters[i].dy - this.mouseY) * this.painters[i].div) * this.painters[i].ease;
this.context.lineTo(this.painters[i].dx, this.painters[i].dy);
this.context.stroke();
}
}
}
function bargs( _fn )
{
var args = [];
for( var n = 1; n < arguments.length; n++ )
args.push( arguments[ n ] );
return function () { return _fn.apply( this, args ); };
}
function shaded( context )
{
this.init( context );
}
shaded.prototype =
{
context: null,
prevMouseX: null, prevMouseY: null,
points: null, count: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
this.context.globalCompositeOperation = 'source-over';
this.points = new Array();
this.count = 0;
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
stroke: function( mouseX, mouseY )
{
this.points.push( [ mouseX, mouseY ] );
for (var i = 0; i < this.points.length; i++)
{
var size = 0.3;
var dx = this.points[i][0] - this.points[this.count][0];
var dy = this.points[i][1] - this.points[this.count][1];
var d = dx * dx + dy * dy;
if (d < 1000)
{
this.context.setStroke((1 - (d / 1000)) * 0.1);
this.context.beginPath();
this.context.moveTo( this.points[this.count][0], this.points[this.count][1]);
this.context.lineTo( this.points[i][0], this.points[i][1]);
this.context.stroke();
}
}
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
this.count ++;
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function sketchy( context )
{
this.init( context );
}
sketchy.prototype =
{
context: null,
prevMouseX: null, prevMouseY: null,
points: null, count: null,
init: function( context )
{
this.context = context;
this.context.lineWidth = 1;
this.context.globalCompositeOperation = 'source-over';
this.points = new Array();
this.count = 0;
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
stroke: function( mouseX, mouseY )
{
var context = this.context;
this.points.push( [ mouseX, mouseY ] );
context.strokeStyle = "rgba(0, 0, 0, 0.05)";
context.setStroke(0.05);
context.beginPath();
context.moveTo(this.prevMouseX, this.prevMouseY);
context.lineTo(mouseX, mouseY);
context.stroke();
context.setStroke(0.05);
for (var i = 0; i < this.points.length; i++)
{
var dx = this.points[i][0] - this.points[this.count][0];
var dy = this.points[i][1] - this.points[this.count][1];
var d = dx * dx + dy * dy;
if (d < 4000 && Math.random() > d / 2000) {
context.beginPath();
context.moveTo( this.points[this.count][0] + (dx * 0.3), this.points[this.count][1] + (dy * 0.3));
context.lineTo( this.points[i][0] - (dx * 0.3), this.points[i][1] - (dy * 0.3));
context.stroke();
}
}
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
this.count ++;
},
strokeEnd: function( mouseX, mouseY )
{
}
}
function squares( context )
{
this.init( context );
}
squares.prototype =
{
context: null,
prevMouseX: null, prevMouseY: null,
init: function( context )
{
this.context = context;
this.context.globalCompositeOperation = 'source-over';
this.context.lineWidth = 1;
},
destroy: function()
{
},
strokeStart: function( mouseX, mouseY )
{
this.context.setStroke(1);
this.context.setFill();
this.prevMouseX = mouseX;
this.prevMouseY = mouseY;
},
stroke: function( mouseX, mouseY )
{
var dx = mouseX - this.prevMouseX;
var dy = mouseY - this.prevMouseY;
var angle = 1.57079633;
var px = Math.cos(angle) * dx - Math.sin(angle) * dy;
var py = Math.sin(angle) * dx + Math.cos(angle) * dy ;
this.context.beginPath();
this.context.moveTo(this.prevMouseX - px, this.prevMouseY - py);
this.context.lineTo(this.prevMouseX + px, this.prevMouseY + py);
this.context.lineTo(mouseX + px, mouseY + py);
this.context.lineTo(mouseX - px, mouseY - py);
this.context.lineTo(this.prevMouseX - px, this.prevMouseY - py);
this.context.fill();
this.context.stroke();