diff --git a/trianglify.js b/trianglify.js index 5bc525de..de3f0fb9 100644 --- a/trianglify.js +++ b/trianglify.js @@ -9,6 +9,7 @@ function Trianglify(options) { cellpadding: defaults(options.cellpadding, 0.1*options.cellsize || 15), noiseIntensity: defaults(options.noiseIntensity, 0.3), x_gradient: defaults(options.x_gradient, Trianglify.randomColor()), + format: defaults(options.format, "svg"), } this.options.y_gradient = options.y_gradient || this.options.x_gradient.map(function(c){return d3.rgb(c).brighter(.5)}) function defaults(opt, def) { @@ -42,13 +43,13 @@ Trianglify.Pattern = function(options, width, height) { this.options = options this.width = width; this.height = height; - this.svg = this.generateSVG(); + this.polys = this.generatePolygons(); - var s = new XMLSerializer(); - this.svgString = s.serializeToString(this.svg); - this.base64 = btoa(this.svgString); - this.dataUri = 'data:image/svg+xml;base64,' + this.base64; - this.dataUrl = 'url('+this.dataUri+')'; + if (options.format === undefined || options.format === "svg" || options.format === "image/svg+xml") { + this.toVector(); + } else { + this.toImage(options.format); + } } Trianglify.Pattern.prototype.append = function() { @@ -56,7 +57,7 @@ Trianglify.Pattern.prototype.append = function() { } Trianglify.Pattern.gradient_2d = function (x_gradient, y_gradient, width, height) { - + return function(x, y) { var color_x = d3.scale.linear() .range(x_gradient) @@ -68,24 +69,32 @@ Trianglify.Pattern.gradient_2d = function (x_gradient, y_gradient, width, height } } -Trianglify.Pattern.prototype.generateSVG = function () { +Trianglify.Pattern.prototype.generatePolygons = function () { var options = this.options; cellsX = Math.ceil((this.width+options.bleed*2)/options.cellsize), - cellsY = Math.ceil((this.height+options.bleed*2)/options.cellsize), - color = Trianglify.Pattern.gradient_2d(options.x_gradient, options.y_gradient, this.width, this.height); + cellsY = Math.ceil((this.height+options.bleed*2)/options.cellsize); var vertices = d3.range(cellsX*cellsY).map(function(d) { - // figure out which cell we are in - var col = d % cellsX; - var row = Math.floor(d / cellsX); - // put a point in that cell - var x = -options.bleed + col*options.cellsize + Math.random() * (options.cellsize - options.cellpadding*2) + options.cellpadding; - var y = -options.bleed + row*options.cellsize + Math.random() * (options.cellsize - options.cellpadding*2) + options.cellpadding; - return [x, y]; // Populate the actual background with points + // figure out which cell we are in + var col = d % cellsX; + var row = Math.floor(d / cellsX); + var x = -options.bleed + col*options.cellsize + Math.random() * (options.cellsize - options.cellpadding*2) + options.cellpadding; + var y = -options.bleed + row*options.cellsize + Math.random() * (options.cellsize - options.cellpadding*2) + options.cellpadding; + // return [x*cellsize, y*cellsize]; + return [x, y]; // Populate the actual background with points }); + return d3.geom.delaunay(vertices); +} + + +Trianglify.Pattern.prototype.buildSVG = function () { + var options = this.options; + color = Trianglify.Pattern.gradient_2d(options.x_gradient, options.y_gradient, this.width, this.height); + var elem = document.createElementNS("http://www.w3.org/2000/svg", "svg"); var svg = d3.select(elem); + svg.attr("width", this.width); svg.attr("height", this.height); svg.attr('xmlns', 'http://www.w3.org/2000/svg'); @@ -93,18 +102,28 @@ Trianglify.Pattern.prototype.generateSVG = function () { if (options.noiseIntensity > 0.01) { - var filter = svg.append("filter").attr("id", "noise"); - - var noise = filter.append('feTurbulence').attr('type', 'fractalNoise').attr('in', 'fillPaint').attr('fill', '#F00').attr('baseFrequency', 0.7).attr('numOctaves', '10').attr('stitchTiles', 'stitch'); - var transfer = filter.append('feComponentTransfer'); - transfer.append('feFuncR').attr('type', 'linear').attr('slope', '2').attr('intercept', '-.5'); - transfer.append('feFuncG').attr('type', 'linear').attr('slope', '2').attr('intercept', '-.5'); - transfer.append('feFuncB').attr('type', 'linear').attr('slope', '2').attr('intercept', '-.5'); - filter.append('feColorMatrix').attr('type', 'matrix').attr('values', "0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0 0 0 1 0") - var filterRect = svg.append("rect").attr("opacity", options.noiseIntensity).attr('width', '100%').attr('height', '100%').attr("filter", "url(#noise)"); + var filter = svg.append("filter").attr("id", "noise"); + + var noise = filter.append('feTurbulence') + .attr('type', 'fractalNoise') + .attr('in', 'fillPaint') + .attr('fill', '#F00') + .attr('baseFrequency', 0.7) + .attr('numOctaves', '10') + .attr('stitchTiles', 'stitch'); + var transfer = filter.append('feComponentTransfer'); + transfer.append('feFuncR').attr('type', 'linear').attr('slope', '2').attr('intercept', '-.5'); + transfer.append('feFuncG').attr('type', 'linear').attr('slope', '2').attr('intercept', '-.5'); + transfer.append('feFuncB').attr('type', 'linear').attr('slope', '2').attr('intercept', '-.5'); + filter.append('feColorMatrix').attr('type', 'matrix').attr('values', "0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0 0 0 1 0") + var filterRect = svg.append("rect") + .attr("opacity", options.noiseIntensity) + .attr('width', '100%') + .attr('height', '100%') + .attr("filter", "url(#noise)"); } - var polys = d3.geom.delaunay(vertices); - polys.forEach(function(d) { + + this.polys.forEach(function(d) { var x = (d[0][0] + d[1][0] + d[2][0])/3; var y = (d[0][1] + d[1][1] + d[2][1])/3; var c = color(x, y); @@ -113,6 +132,98 @@ Trianglify.Pattern.prototype.generateSVG = function () { return svg.node(); } +Trianglify.Pattern.prototype.drawToCanvas = function(ctx, forceSize, loc) { + if (!(ctx instanceof CanvasRenderingContext2D)) { + console.log("Must provide a 2D canvas rendering context."); + return; + } + + var options = this.options; + color = Trianglify.Pattern.gradient_2d(options.x_gradient, options.y_gradient, this.width, this.height); + + if (forceSize === true || forceSize === undefined) { + ctx.canvas.width = this.width; + ctx.canvas.height = this.height; + } + + if (loc === undefined) {loc = [0,0];} + + if (options.noiseIntensity > 0.01) { + console.log("Canvas-based exports do not yet support noiseIntensity; continuing without."); + } + + this.polys.forEach(function(d) { + var x = (d[0][0] + d[1][0] + d[2][0])/3; + var y = (d[0][1] + d[1][1] + d[2][1])/3; + + ctx.beginPath(); + ctx.moveTo(loc[0]+d[0][0],loc[1]+d[0][1]); + ctx.lineTo(loc[0]+d[1][0],loc[1]+d[1][1]); + ctx.lineTo(loc[0]+d[2][0],loc[1]+d[2][1]); + ctx.lineTo(loc[0]+d[0][0],loc[1]+d[0][1]); + ctx.fillStyle = ctx.strokeStyle = color(x, y); + ctx.fill(); + ctx.stroke(); // this prevents seams between the polygons + }) +} + +Trianglify.Pattern.prototype.toVector = function() { + this.svg = this.buildSVG(); + var s = new XMLSerializer(); + this.svgString = s.serializeToString(this.svg); + this.base64 = btoa(this.svgString); + this.dataUri = 'data:image/svg+xml;base64,' + this.base64; + this.dataUrl = 'url('+this.dataUri+')'; +} + +Trianglify.Pattern.prototype.toImage = function (format, ctx) { + if (format === undefined) { + format = ""; + } else if (format.indexOf("/") < 0) { + format = "image/" + format; + } + + if (format !== "image/png" && format !== "image/jpeg" && format !== "") { + console.log("Warning: image types other than PNG or JPEG may have very limited browser support. (Selected: "+format+")"); + } + + var deleteAfter = false; + if (!(ctx instanceof CanvasRenderingContext2D)) { + if (ctx === undefined) { + ctx = this.appendCanvas(); + deleteAfter = true; + } else { + console.log("Must provide a 2D canvas rendering context or leave empty to generate new canvas."); + return; + } + } else { + this.drawToCanvas(ctx); + } + + this.dataUri = ctx.canvas.toDataURL(format); + this.dataUrl = 'url('+this.dataUri+')'; + + if (deleteAfter) { + document.body.removeChild(ctx.canvas); + } +} + +Trianglify.Pattern.prototype.append = function() { + document.body.appendChild(this.svg); +} + +Trianglify.Pattern.prototype.appendCanvas = function (show) { + var cnv = document.createElement("canvas"); + if (!show) { + cnv.style.display = "none"; + } + + document.body.appendChild(cnv); + var ctx = cnv.getContext("2d"); + this.drawToCanvas(ctx); + return ctx; +} + //colorbrewer palettes from http://bl.ocks.org/mbostock/5577023 var colorbrewer = {YlGn: { 3: ["#f7fcb9","#addd8e","#31a354"], diff --git a/trianglify.min.js b/trianglify.min.js index c22bc3e6..0595990d 100644 --- a/trianglify.min.js +++ b/trianglify.min.js @@ -1 +1 @@ -function Trianglify(f){function e(f,e){return"undefined"!=typeof f?f:e}"undefined"==typeof f&&(f={}),this.options={cellsize:e(f.cellsize,150),bleed:e(f.cellsize,150),cellpadding:e(f.cellpadding,.1*f.cellsize||15),noiseIntensity:e(f.noiseIntensity,.3),x_gradient:e(f.x_gradient,Trianglify.randomColor())},this.options.y_gradient=f.y_gradient||this.options.x_gradient.map(function(f){return d3.rgb(f).brighter(.5)})}"undefined"!=typeof module&&module.exports&&(d3=require("d3"),jsdom=require("jsdom"),document=new(jsdom.level(1,"core").Document),XMLSerializer=require("xmldom").XMLSerializer,btoa=require("btoa"),module.exports=Trianglify),Trianglify.randomColor=function(){var f=Object.keys(colorbrewer),e=colorbrewer[f[Math.floor(Math.random()*f.length)]];f=Object.keys(e);var d=e[f[Math.floor(Math.random()*f.length)]];return d},Trianglify.prototype.generate=function(f,e){return new Trianglify.Pattern(this.options,f,e)},Trianglify.Pattern=function(f,e,d){this.options=f,this.width=e,this.height=d,this.svg=this.generateSVG();var a=new XMLSerializer;this.svgString=a.serializeToString(this.svg),this.base64=btoa(this.svgString),this.dataUri="data:image/svg+xml;base64,"+this.base64,this.dataUrl="url("+this.dataUri+")"},Trianglify.Pattern.prototype.append=function(){document.body.appendChild(this.svg)},Trianglify.Pattern.gradient_2d=function(f,e,d,a){return function(c,b){var t=d3.scale.linear().range(f).domain(d3.range(0,d,d/f.length)),r=d3.scale.linear().range(e).domain(d3.range(0,a,a/e.length));return d3.interpolateRgb(t(c),r(b))(.5)}},Trianglify.Pattern.prototype.generateSVG=function(){var f=this.options;cellsX=Math.ceil((this.width+2*f.bleed)/f.cellsize),cellsY=Math.ceil((this.height+2*f.bleed)/f.cellsize),color=Trianglify.Pattern.gradient_2d(f.x_gradient,f.y_gradient,this.width,this.height);var e=d3.range(cellsX*cellsY).map(function(e){var d=e%cellsX,a=Math.floor(e/cellsX),c=-f.bleed+d*f.cellsize+Math.random()*(f.cellsize-2*f.cellpadding)+f.cellpadding,b=-f.bleed+a*f.cellsize+Math.random()*(f.cellsize-2*f.cellpadding)+f.cellpadding;return[c,b]}),d=document.createElementNS("http://www.w3.org/2000/svg","svg"),a=d3.select(d);a.attr("width",this.width),a.attr("height",this.height),a.attr("xmlns","http://www.w3.org/2000/svg");var c=a.append("g");if(f.noiseIntensity>.01){var b=a.append("filter").attr("id","noise"),t=b.append("feTurbulence").attr("type","fractalNoise").attr("in","fillPaint").attr("fill","#F00").attr("baseFrequency",.7).attr("numOctaves","10").attr("stitchTiles","stitch"),r=b.append("feComponentTransfer");r.append("feFuncR").attr("type","linear").attr("slope","2").attr("intercept","-.5"),r.append("feFuncG").attr("type","linear").attr("slope","2").attr("intercept","-.5"),r.append("feFuncB").attr("type","linear").attr("slope","2").attr("intercept","-.5"),b.append("feColorMatrix").attr("type","matrix").attr("values","0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0 0 0 1 0");var n=a.append("rect").attr("opacity",f.noiseIntensity).attr("width","100%").attr("height","100%").attr("filter","url(#noise)")}var i=d3.geom.delaunay(e);return i.forEach(function(f){var 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\ No newline at end of file +function Trianglify(f){function e(f,e){return"undefined"!=typeof f?f:e}"undefined"==typeof f&&(f={}),this.options={cellsize:e(f.cellsize,150),bleed:e(f.cellsize,150),cellpadding:e(f.cellpadding,.1*f.cellsize||15),noiseIntensity:e(f.noiseIntensity,.3),x_gradient:e(f.x_gradient,Trianglify.randomColor()),format:e(f.format,"svg")},this.options.y_gradient=f.y_gradient||this.options.x_gradient.map(function(f){return d3.rgb(f).brighter(.5)})}"undefined"!=typeof module&&module.exports&&(d3=require("d3"),jsdom=require("jsdom"),document=new(jsdom.level(1,"core").Document),XMLSerializer=require("xmldom").XMLSerializer,btoa=require("btoa"),module.exports=Trianglify),Trianglify.randomColor=function(){var f=Object.keys(colorbrewer),e=colorbrewer[f[Math.floor(Math.random()*f.length)]];f=Object.keys(e);var d=e[f[Math.floor(Math.random()*f.length)]];return d},Trianglify.prototype.generate=function(f,e){return new Trianglify.Pattern(this.options,f,e)},Trianglify.Pattern=function(f,e,d){this.options=f,this.width=e,this.height=d,this.polys=this.generatePolygons(),void 0===f.format||"svg"===f.format||"image/svg+xml"===f.format?this.toVector():this.toImage(f.format)},Trianglify.Pattern.prototype.append=function(){document.body.appendChild(this.svg)},Trianglify.Pattern.gradient_2d=function(f,e,d,a){return function(c,b){var t=d3.scale.linear().range(f).domain(d3.range(0,d,d/f.length)),n=d3.scale.linear().range(e).domain(d3.range(0,a,a/e.length));return d3.interpolateRgb(t(c),n(b))(.5)}},Trianglify.Pattern.prototype.generatePolygons=function(){var f=this.options;cellsX=Math.ceil((this.width+2*f.bleed)/f.cellsize),cellsY=Math.ceil((this.height+2*f.bleed)/f.cellsize);var e=d3.range(cellsX*cellsY).map(function(e){var d=e%cellsX,a=Math.floor(e/cellsX),c=-f.bleed+d*f.cellsize+Math.random()*(f.cellsize-2*f.cellpadding)+f.cellpadding,b=-f.bleed+a*f.cellsize+Math.random()*(f.cellsize-2*f.cellpadding)+f.cellpadding;return[c,b]});return d3.geom.delaunay(e)},Trianglify.Pattern.prototype.buildSVG=function(){var f=this.options;color=Trianglify.Pattern.gradient_2d(f.x_gradient,f.y_gradient,this.width,this.height);var e=document.createElementNS("http://www.w3.org/2000/svg","svg"),d=d3.select(e);d.attr("width",this.width),d.attr("height",this.height),d.attr("xmlns","http://www.w3.org/2000/svg");var a=d.append("g");if(f.noiseIntensity>.01){var c=d.append("filter").attr("id","noise"),b=(c.append("feTurbulence").attr("type","fractalNoise").attr("in","fillPaint").attr("fill","#F00").attr("baseFrequency",.7).attr("numOctaves","10").attr("stitchTiles","stitch"),c.append("feComponentTransfer"));b.append("feFuncR").attr("type","linear").attr("slope","2").attr("intercept","-.5"),b.append("feFuncG").attr("type","linear").attr("slope","2").attr("intercept","-.5"),b.append("feFuncB").attr("type","linear").attr("slope","2").attr("intercept","-.5"),c.append("feColorMatrix").attr("type","matrix").attr("values","0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0.3333 0.3333 0.3333 0 0 \n 0 0 0 1 0");{d.append("rect").attr("opacity",f.noiseIntensity).attr("width","100%").attr("height","100%").attr("filter","url(#noise)")}}return this.polys.forEach(function(f){var e=(f[0][0]+f[1][0]+f[2][0])/3,d=(f[0][1]+f[1][1]+f[2][1])/3,c=color(e,d);a.append("path").attr("d","M"+f.join("L")+"Z").attr({fill:c,stroke:c})}),d.node()},Trianglify.Pattern.prototype.drawToCanvas=function(f,e,d){if(!(f instanceof CanvasRenderingContext2D))return void console.log("Must provide a 2D canvas rendering context.");var a=this.options;color=Trianglify.Pattern.gradient_2d(a.x_gradient,a.y_gradient,this.width,this.height),(e===!0||void 0===e)&&(f.canvas.width=this.width,f.canvas.height=this.height),void 0===d&&(d=[0,0]),a.noiseIntensity>.01&&console.log("Canvas-based exports do not yet support noiseIntensity; continuing without."),this.polys.forEach(function(e){var a=(e[0][0]+e[1][0]+e[2][0])/3,c=(e[0][1]+e[1][1]+e[2][1])/3;f.beginPath(),f.moveTo(d[0]+e[0][0],d[1]+e[0][1]),f.lineTo(d[0]+e[1][0],d[1]+e[1][1]),f.lineTo(d[0]+e[2][0],d[1]+e[2][1]),f.lineTo(d[0]+e[0][0],d[1]+e[0][1]),f.fillStyle=f.strokeStyle=color(a,c),f.fill(),f.stroke()})},Trianglify.Pattern.prototype.toVector=function(){this.svg=this.buildSVG();var f=new XMLSerializer;this.svgString=f.serializeToString(this.svg),this.base64=btoa(this.svgString),this.dataUri="data:image/svg+xml;base64,"+this.base64,this.dataUrl="url("+this.dataUri+")"},Trianglify.Pattern.prototype.toImage=function(f,e){void 0===f?f="":f.indexOf("/")<0&&(f="image/"+f),"image/png"!==f&&"image/jpeg"!==f&&""!==f&&console.log("Warning: image types other than PNG or JPEG may have very limited browser support. 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