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Peter Cottle 2012-08-13 12:40:14 -07:00
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156
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var Colors = (function(){
var iscolor_re = /#[0-9a-f]{6}/i
var hexrgb_re = /#(..)(..)(..)/
var d2h = function(d){
// decimal to hex
var s=d.toString(16);
return (s.length==2) ? s : '0'+s
}
var h2d = function(h){
// hex to decimal
return parseInt(h,16);
}
var _isRGB = function(color){
if (!color || typeof color!='object') return false
var components = objkeys(color).sort().join("")
if (components == 'abgr') return true
}
// var _isHSB = function(color){
// if (!color || typeof cssOrHex!='object') return false
// var components = objkeys(color).sort().join("")
// if (components == 'hsb') return true
// }
var that = {
CSS:{aliceblue:"#f0f8ff", antiquewhite:"#faebd7", aqua:"#00ffff", aquamarine:"#7fffd4", azure:"#f0ffff", beige:"#f5f5dc", bisque:"#ffe4c4", black:"#000000", blanchedalmond:"#ffebcd", blue:"#0000ff", blueviolet:"#8a2be2", brown:"#a52a2a", burlywood:"#deb887", cadetblue:"#5f9ea0", chartreuse:"#7fff00", chocolate:"#d2691e", coral:"#ff7f50", cornflowerblue:"#6495ed", cornsilk:"#fff8dc", crimson:"#dc143c", cyan:"#00ffff", darkblue:"#00008b", darkcyan:"#008b8b", darkgoldenrod:"#b8860b", darkgray:"#a9a9a9", darkgrey:"#a9a9a9", darkgreen:"#006400", darkkhaki:"#bdb76b", darkmagenta:"#8b008b", darkolivegreen:"#556b2f", darkorange:"#ff8c00", darkorchid:"#9932cc", darkred:"#8b0000", darksalmon:"#e9967a", darkseagreen:"#8fbc8f", darkslateblue:"#483d8b", darkslategray:"#2f4f4f", darkslategrey:"#2f4f4f", darkturquoise:"#00ced1", darkviolet:"#9400d3", deeppink:"#ff1493", deepskyblue:"#00bfff", dimgray:"#696969", dimgrey:"#696969", dodgerblue:"#1e90ff", firebrick:"#b22222", floralwhite:"#fffaf0", forestgreen:"#228b22", fuchsia:"#ff00ff", gainsboro:"#dcdcdc", ghostwhite:"#f8f8ff", gold:"#ffd700", goldenrod:"#daa520", gray:"#808080", grey:"#808080", green:"#008000", greenyellow:"#adff2f", honeydew:"#f0fff0", hotpink:"#ff69b4", indianred:"#cd5c5c", indigo:"#4b0082", ivory:"#fffff0", khaki:"#f0e68c", lavender:"#e6e6fa", lavenderblush:"#fff0f5", lawngreen:"#7cfc00", lemonchiffon:"#fffacd", lightblue:"#add8e6", lightcoral:"#f08080", lightcyan:"#e0ffff", lightgoldenrodyellow:"#fafad2", lightgray:"#d3d3d3", lightgrey:"#d3d3d3", lightgreen:"#90ee90", lightpink:"#ffb6c1", lightsalmon:"#ffa07a", lightseagreen:"#20b2aa", lightskyblue:"#87cefa", lightslategray:"#778899", lightslategrey:"#778899", lightsteelblue:"#b0c4de", lightyellow:"#ffffe0", lime:"#00ff00", limegreen:"#32cd32", linen:"#faf0e6", magenta:"#ff00ff", maroon:"#800000", mediumaquamarine:"#66cdaa", mediumblue:"#0000cd", mediumorchid:"#ba55d3", mediumpurple:"#9370d8", mediumseagreen:"#3cb371", mediumslateblue:"#7b68ee", mediumspringgreen:"#00fa9a", mediumturquoise:"#48d1cc", mediumvioletred:"#c71585", midnightblue:"#191970", mintcream:"#f5fffa", mistyrose:"#ffe4e1", moccasin:"#ffe4b5", navajowhite:"#ffdead", navy:"#000080", oldlace:"#fdf5e6", olive:"#808000", olivedrab:"#6b8e23", orange:"#ffa500", orangered:"#ff4500", orchid:"#da70d6", palegoldenrod:"#eee8aa", palegreen:"#98fb98", paleturquoise:"#afeeee", palevioletred:"#d87093", papayawhip:"#ffefd5", peachpuff:"#ffdab9", peru:"#cd853f", pink:"#ffc0cb", plum:"#dda0dd", powderblue:"#b0e0e6", purple:"#800080", red:"#ff0000", rosybrown:"#bc8f8f", royalblue:"#4169e1", saddlebrown:"#8b4513", salmon:"#fa8072", sandybrown:"#f4a460", seagreen:"#2e8b57", seashell:"#fff5ee", sienna:"#a0522d", silver:"#c0c0c0", skyblue:"#87ceeb", slateblue:"#6a5acd", slategray:"#708090", slategrey:"#708090", snow:"#fffafa", springgreen:"#00ff7f", steelblue:"#4682b4", tan:"#d2b48c", teal:"#008080", thistle:"#d8bfd8", tomato:"#ff6347", turquoise:"#40e0d0", violet:"#ee82ee", wheat:"#f5deb3", white:"#ffffff", whitesmoke:"#f5f5f5", yellow:"#ffff00", yellowgreen:"#9acd32"},
// possible invocations:
// decode(1,2,3,.4) -> {r:1, g:2, b:3, a:0.4}
// decode(128, .7) -> {r:128, g:128, b:128, a:0.7}
// decode("#ff0000") -> {r:255, g:0, b:0, a:1}
// decode("#ff0000",.5) -> {r:255, g:0, b:0, a:0.5}
// decode("white") -> {r:255, g:255, b:255, a:1}
// decode({r:0,g:0,b:0}) -> {r:0, g:0, b:0, a:1}
decode:function(clr){
var argLen = arguments.length
for (var i=argLen-1; i>=0; i--) if (arguments[i]===undefined) argLen--
var args = arguments
if (!clr) return null
if (argLen==1 && _isRGB(clr)) return clr
var rgb = null
if (typeof clr=='string'){
var alpha = 1
if (argLen==2) alpha = args[1]
var nameMatch = that.CSS[clr.toLowerCase()]
if (nameMatch!==undefined){
clr = nameMatch
}
var hexMatch = clr.match(iscolor_re)
if (hexMatch){
vals = clr.match(hexrgb_re)
// trace(vals)
if (!vals || !vals.length || vals.length!=4) return null
rgb = {r:h2d(vals[1]), g:h2d(vals[2]), b:h2d(vals[3]), a:alpha}
}
}else if (typeof clr=='number'){
if (argLen>=3){
rgb = {r:args[0], g:args[1], b:args[2], a:1}
if (argLen>=4) rgb.a *= args[3]
}else if(argLen>=1){
rgb = {r:args[0], g:args[0], b:args[0], a:1}
if (argLen==2) rgb.a *= args[1]
}
}
// if (!rgb) trace("<null color>")
// else trace(nano("<r:{r} g:{g} b:{b} a:{a}>",rgb))
//
// if (arguments.length==1){
// if (_isRGB(clr)) return clr
// if (!clr || typeof clr!='string') return null
//
// var nameMatch = that.CSS[clr.toLowerCase()]
// if (nameMatch!==undefined){
// clr = nameMatch
// }
// var hexMatch = clr.match(iscolor_re)
// if (hexMatch){
// vals = clr.match(hexrgb_re)
// if (!vals || !vals.length || vals.length!=4) return null
// var rgb = {r:h2d(vals[1]), g:h2d(vals[2]), b:h2d(vals[3])}
// return rgb
// }
// }
return rgb
},
validate:function(str){
if (!str || typeof str!='string') return false
if (that.CSS[str.toLowerCase()] !== undefined) return true
if (str.match(iscolor_re)) return true
return false
},
// transform
mix:function(color1, color2, proportion){
var c1 = that.decode(color1)
var c2 = that.decode(color2)
// var mixed = ... should this be a triplet or a string?
},
blend:function(rgbOrHex, alpha){
alpha = (alpha!==undefined) ? Math.max(0,Math.min(1,alpha)) : 1
var rgb = that.decode(rgbOrHex)
if (!rgb) return null
if (alpha==1) return rgbOrHex
var rgb = rgbOrHex
if (typeof rgbOrHex=='string') rgb = that.decode(rgbOrHex)
var blended = objcopy(rgb)
blended.a *= alpha
return nano("rgba({r},{g},{b},{a})", blended)
},
// output
encode:function(rgb){
if (!_isRGB(rgb)){
rgb = that.decode(rgb)
if (!_isRGB(rgb)) return null
}
if (rgb.a==1){
return nano("#{r}{g}{b}", {r:d2h(rgb.r), g:d2h(rgb.g), b:d2h(rgb.b)} )
}else{
return nano("rgba({r},{g},{b},{a})", rgb)
}
// encoding = encoding || "hex"
// if (!_isRGB(rgb)) return null
// switch(encoding){
// case "hex":
// return nano("#{r}{g}{b}", {r:d2h(rgb.r), g:d2h(rgb.g), b:d2h(rgb.b)} )
// break
//
// case "rgba":
// return nano("rgba({r},{g},{b},{alpha})", rgb)
// break
// }
// // if (rgb===undefined || !rgb.length || rgb.length!=3) return null
// // return '#'+$.map(rgb, function(c){return d2h(c)}).join("")
}
}
return that
})()

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//
// graphics.js
//
// Created by Christian Swinehart on 2010-12-07.
// Copyright (c) 2011 Samizdat Drafting Co. All rights reserved.
//
var Graphics = function(canvas){
var dom = $(canvas)
var ctx = $(dom).get(0).getContext('2d')
var _bounds = null
var _colorMode = "rgb" // vs hsb
var _coordMode = "origin" // vs "center"
var _drawLibrary = {}
var _drawStyle = {background:null,
fill:null,
stroke:null,
width:0}
var _fontLibrary = {}
var _fontStyle = {font:"sans-serif",
size:12,
align:"left",
color:Colors.decode("black"),
alpha:1,
baseline:"ideographic"}
var _lineBuffer = [] // calls to .lines sit here until flushed by .drawlines
///MACRO:primitives-start
var primitives = Primitives(ctx, _drawStyle, _fontStyle)
var _Oval = primitives._Oval
var _Rect = primitives._Rect
var _Color = primitives._Color
var _Path = primitives._Path
///MACRO:primitives-end
// drawStyle({background:"color" or {r,g,b,a},
// fill:"color" or {r,g,b,a},
// stroke:"color" or {r,g,b,a},
// alpha:<number>,
// weight:<number>})
var that = {
init:function(){
if (!ctx) return null
return that
},
// canvas-wide settings
size:function(width,height){
if (!isNaN(width) && !isNaN(height)){
dom.attr({width:width,height:height})
// if (_drawStyle.fill!==null) that.fill(_drawStyle.fill)
// if (_drawStyle.stroke!==null) that.stroke(_drawStyle.stroke)
// that.textStyle(_fontStyle)
// trace(_drawStyle,_fontStyle)
}
return {width:dom.attr('width'), height:dom.attr('height')}
},
clear:function(x,y,w,h){
if (arguments.length<4){
x=0; y=0
w=dom.attr('width')
h=dom.attr('height')
}
ctx.clearRect(x,y,w,h)
if (_drawStyle.background!==null){
ctx.save()
ctx.fillStyle = Colors.encode(_drawStyle.background)
ctx.fillRect(x,y,w,h)
ctx.restore()
}
},
background:function(a,b,c,d){
if (a==null){
_drawStyle.background = null
return null
}
var fillColor = Colors.decode(a,b,c,d)
if (fillColor){
_drawStyle.background = fillColor
that.clear()
}
},
// drawing to screen
noFill:function(){
_drawStyle.fill = null
},
fill:function(a,b,c,d){
if (arguments.length==0){
return _drawStyle.fill
}else if (arguments.length>0){
var fillColor = Colors.decode(a,b,c,d)
_drawStyle.fill = fillColor
ctx.fillStyle = Colors.encode(fillColor)
}
},
noStroke:function(){
_drawStyle.stroke = null
ctx.strokeStyle = null
},
stroke:function(a,b,c,d){
if (arguments.length==0 && _drawStyle.stroke!==null){
return _drawStyle.stroke
}else if (arguments.length>0){
var strokeColor = Colors.decode(a,b,c,d)
_drawStyle.stroke = strokeColor
ctx.strokeStyle = Colors.encode(strokeColor)
}
},
strokeWidth:function(ptsize){
if (ptsize===undefined) return ctx.lineWidth
ctx.lineWidth = _drawStyle.width = ptsize
},
Color:function(clr){
return new _Color(clr)
},
// Font:function(fontName, pointSize){
// return new _Font(fontName, pointSize)
// },
// font:function(fontName, pointSize){
// if (fontName!==undefined) _fontStyle.font = fontName
// if (pointSize!==undefined) _fontStyle.size = pointSize
// ctx.font = nano("{size}px {font}", _fontStyle)
// },
drawStyle:function(style){
// without arguments, show the current state
if (arguments.length==0) return objcopy(_drawStyle)
// if this is a ("stylename", {style}) invocation, don't change the current
// state but add it to the library
if (arguments.length==2){
var styleName = arguments[0]
var styleDef = arguments[1]
if (typeof styleName=='string' && typeof styleDef=='object'){
var newStyle = {}
if (styleDef.color!==undefined){
var textColor = Colors.decode(styleDef.color)
if (textColor) newStyle.color = textColor
}
$.each('background fill stroke width'.split(' '), function(i, param){
if (styleDef[param]!==undefined) newStyle[param] = styleDef[param]
})
if (!$.isEmptyObject(newStyle)) _drawLibrary[styleName] = newStyle
}
return
}
// if a ("stylename") invocation, load up the selected style
if (arguments.length==1 && _drawLibrary[arguments[0]]!==undefined){
style = _drawLibrary[arguments[0]]
}
// for each of the properties specified, update the canvas state
if (style.width!==undefined) _drawStyle.width = style.width
ctx.lineWidth = _drawStyle.width
$.each('background fill stroke',function(i, color){
if (style[color]!==undefined){
if (style[color]===null) _drawStyle[color] = null
else{
var useColor = Colors.decode(style[color])
if (useColor) _drawStyle[color] = useColor
}
}
})
ctx.fillStyle = _drawStyle.fill
ctx.strokeStyle = _drawStyle.stroke
},
textStyle:function(style){
// without arguments, show the current state
if (arguments.length==0) return objcopy(_fontStyle)
// if this is a ("name", {style}) invocation, don't change the current
// state but add it to the library
if (arguments.length==2){
var styleName = arguments[0]
var styleDef = arguments[1]
if (typeof styleName=='string' && typeof styleDef=='object'){
var newStyle = {}
if (styleDef.color!==undefined){
var textColor = Colors.decode(styleDef.color)
if (textColor) newStyle.color = textColor
}
$.each('font size align baseline alpha'.split(' '), function(i, param){
if (styleDef[param]!==undefined) newStyle[param] = styleDef[param]
})
if (!$.isEmptyObject(newStyle)) _fontLibrary[styleName] = newStyle
}
return
}
if (arguments.length==1 && _fontLibrary[arguments[0]]!==undefined){
style = _fontLibrary[arguments[0]]
}
if (style.font!==undefined) _fontStyle.font = style.font
if (style.size!==undefined) _fontStyle.size = style.size
ctx.font = nano("{size}px {font}", _fontStyle)
if (style.align!==undefined){
ctx.textAlign = _fontStyle.align = style.align
}
if (style.baseline!==undefined){
ctx.textBaseline = _fontStyle.baseline = style.baseline
}
if (style.alpha!==undefined) _fontStyle.alpha = style.alpha
if (style.color!==undefined){
var textColor = Colors.decode(style.color)
if (textColor) _fontStyle.color = textColor
}
if (_fontStyle.color){
var textColor = Colors.blend(_fontStyle.color, _fontStyle.alpha)
if (textColor) ctx.fillStyle = textColor
}
// trace(_fontStyle,opts)
},
text:function(textStr, x, y, opts){ // opts: x,y, color, font, align, baseline, width
if (arguments.length>=3 && !isNaN(x)){
opts = opts || {}
opts.x = x
opts.y = y
}else if (arguments.length==2 && typeof(x)=='object'){
opts = x
}else{
opts = opts || {}
}
var style = objmerge(_fontStyle, opts)
ctx.save()
if (style.align!==undefined) ctx.textAlign = style.align
if (style.baseline!==undefined) ctx.textBaseline = style.baseline
if (style.font!==undefined && !isNaN(style.size)){
ctx.font = nano("{size}px {font}", style)
}
var alpha = (style.alpha!==undefined) ? style.alpha : _fontStyle.alpha
var color = (style.color!==undefined) ? style.color : _fontStyle.color
ctx.fillStyle = Colors.blend(color, alpha)
// if (alpha>0) ctx.fillText(textStr, style.x, style.y);
if (alpha>0) ctx.fillText(textStr, Math.round(style.x), style.y);
ctx.restore()
},
textWidth:function(textStr, style){ // style: x,y, color, font, align, baseline, width
style = objmerge(_fontStyle, style||{})
ctx.save()
ctx.font = nano("{size}px {font}", style)
var width = ctx.measureText(textStr).width
ctx.restore()
return width
},
// hasFont:function(fontName){
// var testTxt = 'H h H a H m H b H u H r H g H e H r H f H o H n H s H t H i H v H'
// ctx.save()
// ctx.font = '10px sans-serif'
// var defaultWidth = ctx.measureText(testTxt).width
//
// ctx.font = '10px "'+fontName+'"'
// var putativeWidth = ctx.measureText(testTxt).width
// ctx.restore()
//
// // var defaultWidth = that.textWidth(testTxt, {font:"Times New Roman", size:120})
// // var putativeWidth = that.textWidth(testTxt, {font:fontName, size:120})
// trace(defaultWidth,putativeWidth,ctx.font)
// // return (putativeWidth!=defaultWidth || fontName=="Times New Roman")
// return putativeWidth!=defaultWidth
// },
// shape primitives.
// classes will return an {x,y,w,h, fill(), stroke()} object without drawing
// functions will draw the shape based on current stroke/fill state
Rect:function(x,y,w,h,r,style){
return new _Rect(x,y,w,h,r,style)
},
rect:function(x, y, w, h, r, style){
_Rect.prototype._draw(x,y,w,h,r,style)
},
Oval:function(x, y, w, h, style) {
return new _Oval(x,y,w,h, style)
},
oval:function(x, y, w, h, style) {
style = style || {}
_Oval.prototype._draw(x,y,w,h, style)
},
// draw a line immediately
line:function(x1, y1, x2, y2, style){
var p = new _Path(x1,y1,x2,y2)
p.draw(style)
},
// queue up a line segment to be drawn in a batch by .drawLines
lines:function(x1, y1, x2, y2){
if (typeof y2=='number'){
// ƒ( x1, y1, x2, y2)
_lineBuffer.push( [ {x:x1,y:y1}, {x:x2,y:y2} ] )
}else{
// ƒ( {x:1, y:1}, {x:2, y:2} )
_lineBuffer.push( [ x1,y1 ] )
}
},
// flush the buffered .lines to screen
drawLines:function(style){
var p = new _Path(_lineBuffer)
p.draw(style)
_lineBuffer = []
}
}
return that.init()
}
// // helpers for figuring out where to draw arrows
// var intersect_line_line = function(p1, p2, p3, p4)
// {
// var denom = ((p4.y - p3.y)*(p2.x - p1.x) - (p4.x - p3.x)*(p2.y - p1.y));
//
// // lines are parallel
// if (denom === 0) {
// return false;
// }
//
// var ua = ((p4.x - p3.x)*(p1.y - p3.y) - (p4.y - p3.y)*(p1.x - p3.x)) / denom;
// var ub = ((p2.x - p1.x)*(p1.y - p3.y) - (p2.y - p1.y)*(p1.x - p3.x)) / denom;
//
// if (ua < 0 || ua > 1 || ub < 0 || ub > 1) {
// return false;
// }
//
// return arbor.Point(p1.x + ua * (p2.x - p1.x), p1.y + ua * (p2.y - p1.y));
// }
//
// var intersect_line_box = function(p1, p2, p3, w, h)
// {
// var tl = {x: p3.x, y: p3.y};
// var tr = {x: p3.x + w, y: p3.y};
// var bl = {x: p3.x, y: p3.y + h};
// var br = {x: p3.x + w, y: p3.y + h};
//
// var result;
// if (result = intersect_line_line(p1, p2, tl, tr)) { return result; } // top
// if (result = intersect_line_line(p1, p2, tr, br)) { return result; } // right
// if (result = intersect_line_line(p1, p2, br, bl)) { return result; } // bottom
// if (result = intersect_line_line(p1, p2, bl, tl)) { return result; } // left
//
// return false;
// }

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//
// primitives
//
// Created by Christian Swinehart on 2010-12-08.
// Copyright (c) 2011 Samizdat Drafting Co. All rights reserved.
//
var Primitives = function(ctx, _drawStyle, _fontStyle){
///MACRO:primitives-start
var _Oval = function(x,y,w,h,style){
this.x = x
this.y = y
this.w = w
this.h = h
this.style = (style!==undefined) ? style : {}
}
_Oval.prototype = {
draw:function(overrideStyle){
this._draw(overrideStyle)
},
_draw:function(x,y,w,h, style){
if (objcontains(x, 'stroke', 'fill', 'width')) style = x
if (this.x!==undefined){
x=this.x, y=this.y, w=this.w, h=this.h;
style = objmerge(this.style, style)
}
style = objmerge(_drawStyle, style)
if (!style.stroke && !style.fill) return
var kappa = .5522848;
ox = (w / 2) * kappa, // control point offset horizontal
oy = (h / 2) * kappa, // control point offset vertical
xe = x + w, // x-end
ye = y + h, // y-end
xm = x + w / 2, // x-middle
ym = y + h / 2; // y-middle
ctx.save()
ctx.beginPath();
ctx.moveTo(x, ym);
ctx.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
ctx.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
ctx.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
ctx.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
ctx.closePath();
// trace(style.fill, style.stroke)
if (style.fill!==null){
// trace("fill",fillColor, Colors.encode(fillColor))
if (style.alpha!==undefined) ctx.fillStyle = Colors.blend(style.fill, style.alpha)
else ctx.fillStyle = Colors.encode(style.fill)
ctx.fill()
}
if (style.stroke!==null){
ctx.strokeStyle = Colors.encode(style.stroke)
if (!isNaN(style.width)) ctx.lineWidth = style.width
ctx.stroke()
}
ctx.restore()
}
}
var _Rect = function(x,y,w,h,r,style){
if (objcontains(r, 'stroke', 'fill', 'width')){
style = r
r = 0
}
this.x = x
this.y = y
this.w = w
this.h = h
this.r = (r!==undefined) ? r : 0
this.style = (style!==undefined) ? style : {}
}
_Rect.prototype = {
draw:function(overrideStyle){
this._draw(overrideStyle)
},
_draw:function(x,y,w,h,r, style){
if (objcontains(r, 'stroke', 'fill', 'width', 'alpha')){
style = r; r=0;
}else if (objcontains(x, 'stroke', 'fill', 'width', 'alpha')){
style = x
}
if (this.x!==undefined){
x=this.x, y=this.y, w=this.w, h=this.h;
style = objmerge(this.style, style)
}
style = objmerge(_drawStyle, style)
if (!style.stroke && !style.fill) return
var rounded = (r>0)
ctx.save()
ctx.beginPath();
ctx.moveTo(x+r, y);
ctx.lineTo(x+w-r, y);
if (rounded) ctx.quadraticCurveTo(x+w, y, x+w, y+r);
ctx.lineTo(x+w, y+h-r);
if (rounded) ctx.quadraticCurveTo(x+w, y+h, x+w-r, y+h);
ctx.lineTo(x+r, y+h);
if (rounded) ctx.quadraticCurveTo(x, y+h, x, y+h-r);
ctx.lineTo(x, y+r);
if (rounded) ctx.quadraticCurveTo(x, y, x+r, y);
if (style.fill!==null){
if (style.alpha!==undefined) ctx.fillStyle = Colors.blend(style.fill, style.alpha)
else ctx.fillStyle = Colors.encode(style.fill)
ctx.fill()
}
if (style.stroke!==null){
ctx.strokeStyle = Colors.encode(style.stroke)
if (!isNaN(style.width)) ctx.lineWidth = style.width
ctx.stroke()
}
ctx.restore()
}
}
var _Path = function(x1, y1, x2, y2, style){
// calling patterns:
// ƒ( x1, y1, x2, y2, <style> )
// ƒ( {x:1, y:1}, {x:2, y:2}, <style> )
// ƒ( [ {x:1, y:1}, {x:2, y:2}, ...], <style> ) one continuous line
// ƒ( [ [{x,y}, {x,y}], [{x,y}, {x,y}], ...], <style> ) separate lines
if (style!==undefined || typeof y2=='number'){
// ƒ( x1, y1, x2, y2, <style> )
this.points = [ {x:x1,y:y1}, {x:x2,y:y2} ]
this.style = style || {}
}else if ($.isArray(x1)){
// ƒ( [ {x:1, y:1}, {x:2, y:2}, ...], <style> )
this.points = x1
this.style = y1 || {}
}else{
// ƒ( {x:1, y:1}, {x:2, y:2}, <style> )
this.points = [ x1, y1 ]
this.style = x2 || {}
}
}
_Path.prototype = {
draw:function(overrideStyle){
if (this.points.length<2) return
var sublines = []
if (!$.isArray(this.points[0])) sublines.push(this.points)
else sublines = this.points
ctx.save()
ctx.beginPath();
$.each(sublines, function(i, lineseg){
ctx.moveTo(lineseg[0].x+.5, lineseg[0].y+.5);
$.each(lineseg, function(i, pt){
if (i==0) return
ctx.lineTo(pt.x+.5, pt.y+.5);
})
})
var style = $.extend(objmerge(_drawStyle, this.style), overrideStyle)
if (style.closed) ctx.closePath()
if (style.fill!==undefined){
var fillColor = Colors.decode(style.fill, (style.alpha!==undefined) ? style.alpha : 1)
if (fillColor) ctx.fillStyle = Colors.encode(fillColor)
ctx.fill()
}
if (style.stroke!==undefined){
var strokeColor = Colors.decode(style.stroke, (style.alpha!==undefined) ? style.alpha : 1)
if (strokeColor) ctx.strokeStyle = Colors.encode(strokeColor)
if (!isNaN(style.width)) ctx.lineWidth = style.width
ctx.stroke()
}
ctx.restore()
}
}
var _Color = function(a,b,c,d){
var rgba = Colors.decode(a,b,c,d)
if (rgba){
this.r = rgba.r
this.g = rgba.g
this.b = rgba.b
this.a = rgba.a
}
}
_Color.prototype = {
toString:function(){
return Colors.encode(this)
},
blend:function(){
trace("blend",this.r,this.g,this.b,this.a)
}
}
// var _Font = function(face, size){
// this.face = (face!=undefined) ? face : "sans-serif"
// this.size = (size!=undefined) ? size : 12
// // this.alignment = (opts.alignment!=undefined) ? alignment : "left"
// // this.baseline = (opts.baseline!=undefined) ? baseline : "ideographic"
// // this.color = (opts.color!=undefined) ? Colors.decode(opts.color) : Colors.decode("black")
// }
// _Font.prototype = {
// _use:function(face, size){
// // var params = $.extend({face:face, size:size}, opts)
// // $.each('face size alignment baseline color'.split(" "), function(i, param){
// // if (params[param]!==undefined){
// // if (param=='color') _fontStyle[param] = Colors.decode(params[param])
// // else _fontStyle[param] = params[param]
// // }
// // })
//
// // ctx.textAlign = _fontStyle.alignment
// // ctx.textBaseline = _fontStyle.baseline
// ctx.font = nano("{size}px {face}", {face:face, size:size})
// // trace(ctx.font,face,size)
// // ctx.fillStyle = Colors.encode(_fontStyle)
// // _fontStyle = {face:face, size:size, alignment:opts.alignment, baseline:opts.baseline, color:opts.color}
// },
// use:function(){
// ctx.font = nano("{size}px {face}", this)
// }
// }
//
//
///MACRO:primitives-end
return {
_Oval:_Oval,
_Rect:_Rect,
_Color:_Color,
_Path:_Path
// _Frame:Frame
}
}