File: p5/p5.min.js

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c=document.createElement("canvas");c.width=a,c.height=b,c.getContext("2d").drawImage(this.canvas,0,0,this.canvas.width,this.canvas.height,0,0,c.width,c.height),this.canvas.width=this.width=a,this.canvas.height=this.height=b,this.drawingContext.drawImage(c,0,0,a,b,0,0,a,b),this.pixels.length>0&&this.loadPixels()},d.Image.prototype.copy=function(){d.prototype.copy.apply(this,arguments)},d.Image.prototype.mask=function(a){void 0===a&&(a=this);var b=this.drawingContext.globalCompositeOperation,c=1;a instanceof d.Graphics&&(c=a._pInst._pixelDensity);var e=[a,0,0,c*a.width,c*a.height,0,0,this.width,this.height];this.drawingContext.globalCompositeOperation="destination-out",this.copy.apply(this,e),this.drawingContext.globalCompositeOperation=b},d.Image.prototype.filter=function(a,b){e.apply(this.canvas,e[a.toLowerCase()],b)},d.Image.prototype.blend=function(){d.prototype.blend.apply(this,arguments)},d.Image.prototype.save=function(a,b){var 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Array?(this.x=a[0]||0,this.y=a[1]||0,this.z=a[2]||0,this):(this.x=a||0,this.y=b||0,this.z=c||0,this)},e.Vector.prototype.copy=function(){return this.p5?new e.Vector(this.p5,[this.x,this.y,this.z]):new e.Vector(this.x,this.y,this.z)},e.Vector.prototype.add=function(a,b,c){return a instanceof e.Vector?(this.x+=a.x||0,this.y+=a.y||0,this.z+=a.z||0,this):a instanceof Array?(this.x+=a[0]||0,this.y+=a[1]||0,this.z+=a[2]||0,this):(this.x+=a||0,this.y+=b||0,this.z+=c||0,this)},e.Vector.prototype.sub=function(a,b,c){return a instanceof e.Vector?(this.x-=a.x||0,this.y-=a.y||0,this.z-=a.z||0,this):a instanceof Array?(this.x-=a[0]||0,this.y-=a[1]||0,this.z-=a[2]||0,this):(this.x-=a||0,this.y-=b||0,this.z-=c||0,this)},e.Vector.prototype.mult=function(a){return this.x*=a||0,this.y*=a||0,this.z*=a||0,this},e.Vector.prototype.div=function(a){return this.x/=a,this.y/=a,this.z/=a,this},e.Vector.prototype.mag=function(){return Math.sqrt(this.magSq())},e.Vector.prototype.magSq=function(){var a=this.x,b=this.y,c=this.z;return a*a+b*b+c*c},e.Vector.prototype.dot=function(a,b,c){return a instanceof e.Vector?this.dot(a.x,a.y,a.z):this.x*(a||0)+this.y*(b||0)+this.z*(c||0)},e.Vector.prototype.cross=function(a){var b=this.y*a.z-this.z*a.y,c=this.z*a.x-this.x*a.z,d=this.x*a.y-this.y*a.x;return this.p5?new e.Vector(this.p5,[b,c,d]):new e.Vector(b,c,d)},e.Vector.prototype.dist=function(a){var b=a.get().sub(this);return b.mag()},e.Vector.prototype.normalize=function(){return this.div(this.mag())},e.Vector.prototype.limit=function(a){var b=this.magSq();return b>a*a&&(this.div(Math.sqrt(b)),this.mult(a)),this},e.Vector.prototype.setMag=function(a){return this.normalize().mult(a)},e.Vector.prototype.heading=function(){var a=Math.atan2(this.y,this.x);return this.p5?this.p5._angleMode===d.RADIANS?a:f.radiansToDegrees(a):a},e.Vector.prototype.rotate=function(a){this.p5&&this.p5._angleMode===d.DEGREES&&(a=f.degreesToRadians(a));var b=this.heading()+a,c=this.mag();return 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To download this file...\n";k+="1. Go to File --> Save As.\n",k+='2. Choose "Page Source" as the Format.\n',k+='3. 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c.prototype.print=window.console&&console.log?console.log.bind(console):function(){},c.prototype.println=c.prototype.print,c}({},amdclean.core),amdclean.renderingrendering=function(a,b,c){var d=b,c=c;return d.prototype.createCanvas=function(a,b,c){var e;return c?(e=document.createElement("canvas"),e.id="defaultCanvas"):e=this.canvas,this._setupDone||(e.className+=" p5_hidden",e.style.visibility="hidden"),this._userNode?this._userNode.appendChild(e):document.body.appendChild(e),this._defaultGraphics||(this._defaultGraphics=new d.Graphics(e,this,!0),this._elements.push(this._defaultGraphics)),this._defaultGraphics.resize(a,b),this._defaultGraphics._applyDefaults(),this._defaultGraphics},d.prototype.resizeCanvas=function(a,b,c){this._defaultGraphics&&(this._defaultGraphics.resize(a,b),this._defaultGraphics._applyDefaults(),c||this.redraw())},d.prototype.noCanvas=function(){this.canvas&&this.canvas.parentNode.removeChild(this.canvas)},d.prototype.createGraphics=function(a,b){var c=document.createElement("canvas"),e=this._userNode||document.body;e.appendChild(c);var f=new d.Graphics(c,this,!1);this._elements.push(f);for(var g in d.prototype)f.hasOwnProperty(g)||(f[g]="function"==typeof d.prototype[g]?d.prototype[g].bind(f):d.prototype[g]);return f.resize(a,b),f._applyDefaults(),f},d.prototype.blendMode=function(a){if(a!==c.BLEND&&a!==c.DARKEST&&a!==c.LIGHTEST&&a!==c.DIFFERENCE&&a!==c.MULTIPLY&&a!==c.EXCLUSION&&a!==c.SCREEN&&a!==c.REPLACE&&a!==c.OVERLAY&&a!==c.HARD_LIGHT&&a!==c.SOFT_LIGHT&&a!==c.DODGE&&a!==c.BURN&&a!==c.ADD&&a!==c.NORMAL)throw new Error("Mode "+a+" not recognized.");this.drawingContext.globalCompositeOperation=a},d}({},amdclean.core,amdclean.constants),amdclean.shape2d_primitives=function(a,b,c,d){"use strict";var e=b,c=c,d=d;return e.prototype.arc=function(a,b,e,f,g,h,i){if(this._doStroke||this._doFill){this._angleMode===d.DEGREES&&(g=this.radians(g),h=this.radians(h));var j=this.drawingContext,k=c.arcModeAdjust(a,b,e,f,this._ellipseMode),l=k.h>k.w?k.h/2:k.w/2,m=k.h>k.w?k.w/k.h:1,n=k.h>k.w?1:k.h/k.w;return j.save(),j.scale(m,n),j.beginPath(),j.arc(k.x,k.y,l,g,h),this._doStroke&&j.stroke(),i===d.CHORD||i===d.OPEN?j.closePath():(i===d.PIE||void 0===i)&&(j.lineTo(k.x,k.y),j.closePath()),this._doFill&&j.fill(),this._doStroke&&i!==d.OPEN&&void 0!==i&&j.stroke(),j.restore(),this}},e.prototype.ellipse=function(a,b,d,e){if(this._doStroke||this._doFill){d=Math.abs(d),e=Math.abs(e);var f=this.drawingContext,g=c.modeAdjust(a,b,d,e,this._ellipseMode);if(f.beginPath(),d===e)f.arc(g.x+g.w/2,g.y+g.w/2,g.w/2,0,2*Math.PI,!1);else{var h=.5522848,i=g.w/2*h,j=g.h/2*h,k=g.x+g.w,l=g.y+g.h,m=g.x+g.w/2,n=g.y+g.h/2;f.moveTo(g.x,n),f.bezierCurveTo(g.x,n-j,m-i,g.y,m,g.y),f.bezierCurveTo(m+i,g.y,k,n-j,k,n),f.bezierCurveTo(k,n+j,m+i,l,m,l),f.bezierCurveTo(m-i,l,g.x,n+j,g.x,n),f.closePath()}return this._doFill&&f.fill(),this._doStroke&&f.stroke(),this}},e.prototype.line=function(a,b,c,d){if(this._doStroke){var e=this.drawingContext;if("rgba(0,0,0,0)"!==e.strokeStyle)return e.beginPath(),e.moveTo(a,b),e.lineTo(c,d),e.stroke(),this}},e.prototype.point=function(a,b){if(this._doStroke){var c=this.drawingContext,e=c.strokeStyle,f=c.fillStyle;if("rgba(0,0,0,0)"!==e)return a=Math.round(a),b=Math.round(b),c.fillStyle=e,c.lineWidth>1?(c.beginPath(),c.arc(a,b,c.lineWidth/2,0,d.TWO_PI,!1),c.fill()):c.fillRect(a,b,1,1),c.fillStyle=f,this}},e.prototype.quad=function(a,b,c,d,e,f,g,h){if(this._doStroke||this._doFill){var i=this.drawingContext;return i.beginPath(),i.moveTo(a,b),i.lineTo(c,d),i.lineTo(e,f),i.lineTo(g,h),i.closePath(),this._doFill&&i.fill(),this._doStroke&&i.stroke(),this}},e.prototype.rect=function(a,b,d,e){if(this._doStroke||this._doFill){var f=c.modeAdjust(a,b,d,e,this._rectMode),g=this.drawingContext;return this._doStroke&&g.lineWidth%2===1&&g.translate(.5,.5),g.beginPath(),g.rect(f.x,f.y,f.w,f.h),this._doFill&&g.fill(),this._doStroke&&g.stroke(),this._doStroke&&g.lineWidth%2===1&&g.translate(-.5,-.5),this}},e.prototype.triangle=function(a,b,c,d,e,f){if(this._doStroke||this._doFill){var g=this.drawingContext;return g.beginPath(),g.moveTo(a,b),g.lineTo(c,d),g.lineTo(e,f),g.closePath(),this._doFill&&g.fill(),this._doStroke&&g.stroke(),this}},e}({},amdclean.core,amdclean.canvas,amdclean.constants),amdclean.shapeattributes=function(a,b,c){"use strict";var d=b,c=c;return d.prototype._rectMode=c.CORNER,d.prototype._ellipseMode=c.CENTER,d.prototype.ellipseMode=function(a){return(a===c.CORNER||a===c.CORNERS||a===c.RADIUS||a===c.CENTER)&&(this._ellipseMode=a),this},d.prototype.noSmooth=function(){return this.drawingContext.mozImageSmoothingEnabled=!1,this.drawingContext.webkitImageSmoothingEnabled=!1,this},d.prototype.rectMode=function(a){return(a===c.CORNER||a===c.CORNERS||a===c.RADIUS||a===c.CENTER)&&(this._rectMode=a),this},d.prototype.smooth=function(){return this.drawingContext.mozImageSmoothingEnabled=!0,this.drawingContext.webkitImageSmoothingEnabled=!0,this},d.prototype.strokeCap=function(a){return(a===c.ROUND||a===c.SQUARE||a===c.PROJECT)&&(this.drawingContext.lineCap=a),this},d.prototype.strokeJoin=function(a){return(a===c.ROUND||a===c.BEVEL||a===c.MITER)&&(this.drawingContext.lineJoin=a),this},d.prototype.strokeWeight=function(a){return this.drawingContext.lineWidth="undefined"==typeof a||0===a?1e-4:a,this},d}({},amdclean.core,amdclean.constants),amdclean.shapecurves=function(a,b){"use strict";var c=b,d=20,e=20;return c.prototype._curveTightness=0,c.prototype.bezier=function(a,b,c,d,e,f,g,h){return this._doStroke?(this.beginShape(),this.vertex(a,b),this.bezierVertex(c,d,e,f,g,h),this.endShape(),this.stroke(),this):void 0},c.prototype.bezierDetail=function(a){return d=a,this},c.prototype.bezierPoint=function(a,b,c,d,e){var f=1-e;return Math.pow(f,3)*a+3*Math.pow(f,2)*e*b+3*f*Math.pow(e,2)*c+Math.pow(e,3)*d},c.prototype.bezierTangent=function(a,b,c,d,e){var f=1-e;return 3*d*Math.pow(e,2)-3*c*Math.pow(e,2)+6*c*f*e-6*b*f*e+3*b*Math.pow(f,2)-3*a*Math.pow(f,2)},c.prototype.curve=function(a,b,c,d,e,f,g,h){return this._doStroke?(this.beginShape(),this.curveVertex(a,b),this.curveVertex(c,d),this.curveVertex(e,f),this.curveVertex(g,h),this.endShape(),this.stroke(),this):void 0},c.prototype.curveDetail=function(a){return e=a,this},c.prototype.curveTightness=function(a){this._setProperty("_curveTightness",a)},c.prototype.curvePoint=function(a,b,c,d,e){var f=e*e*e,g=e*e,h=-.5*f+g-.5*e,i=1.5*f-2.5*g+1,j=-1.5*f+2*g+.5*e,k=.5*f-.5*g;return a*h+b*i+c*j+d*k},c.prototype.curveTangent=function(a,b,c,d,e){var f=e*e,g=-3*f/2+2*e-.5,h=9*f/2-5*e,i=-9*f/2+4*e+.5,j=3*f/2-e;return a*g+b*h+c*i+d*j},c.prototype.curveTightness=function(){throw"not yet implemented"},c}({},amdclean.core),amdclean.shapevertex=function(a,b,c){"use strict";var d=b,c=c,e=null,f=[],g=[],h=!1,i=!1,j=!1,k=!1;return d.prototype._doFillStrokeClose=function(){this._doFill&&this.drawingContext.fill(),this._doStroke&&this.drawingContext.stroke(),this.drawingContext.closePath()},d.prototype.beginContour=function(){return g=[],k=!0,this},d.prototype.beginShape=function(a){return e=a===c.POINTS||a===c.LINES||a===c.TRIANGLES||a===c.TRIANGLE_FAN||a===c.TRIANGLE_STRIP||a===c.QUADS||a===c.QUAD_STRIP?a:null,f=[],g=[],this},d.prototype.bezierVertex=function(){if(0===f.length)throw"vertex() must be used once before calling bezierVertex()";h=!0;for(var a=[],b=0;b<arguments.length;b++)a[b]=arguments[b];return a.isVert=!1,k?g.push(a):f.push(a),this},d.prototype.curveVertex=function(a,b){return i=!0,this.vertex(a,b),this},d.prototype.endContour=function(){var a=g[0].slice();a.isVert=g[0].isVert,a.moveTo=!1,g.push(a),f.push(f[0]);for(var b=0;b<g.length;b++)f.push(g[b]);return this},d.prototype.endShape=function(a){if(0===f.length)return this;if(!this._doStroke&&!this._doFill)return this;var b,d=a===c.CLOSE;d&&!k&&f.push(f[0]);var g,l,m=f.length;if(!i||e!==c.POLYGON&&null!==e)if(!h||e!==c.POLYGON&&null!==e)if(!j||e!==c.POLYGON&&null!==e)if(e===c.POINTS)for(g=0;m>g;g++)b=f[g],this._doStroke&&this.stroke(b[6]),this.point(b[0],b[1]);else if(e===c.LINES)for(g=0;m>g+1;g+=2)b=f[g],this._doStroke&&this.stroke(f[g+1][6]),this.line(b[0],b[1],f[g+1][0],f[g+1][1]);else if(e===c.TRIANGLES)for(g=0;m>g+2;g+=3)b=f[g],this.drawingContext.beginPath(),this.drawingContext.moveTo(b[0],b[1]),this.drawingContext.lineTo(f[g+1][0],f[g+1][1]),this.drawingContext.lineTo(f[g+2][0],f[g+2][1]),this.drawingContext.lineTo(b[0],b[1]),this._doFill&&(this.fill(f[g+2][5]),this.drawingContext.fill()),this._doStroke&&(this.stroke(f[g+2][6]),this.drawingContext.stroke()),this.drawingContext.closePath();else if(e===c.TRIANGLE_STRIP)for(g=0;m>g+1;g++)b=f[g],this.drawingContext.beginPath(),this.drawingContext.moveTo(f[g+1][0],f[g+1][1]),this.drawingContext.lineTo(b[0],b[1]),this._doStroke&&this.stroke(f[g+1][6]),this._doFill&&this.fill(f[g+1][5]),m>g+2&&(this.drawingContext.lineTo(f[g+2][0],f[g+2][1]),this._doStroke&&this.stroke(f[g+2][6]),this._doFill&&this.fill(f[g+2][5])),this._doFillStrokeClose();else if(e===c.TRIANGLE_FAN){if(m>2)for(this.drawingContext.beginPath(),this.drawingContext.moveTo(f[0][0],f[0][1]),this.drawingContext.lineTo(f[1][0],f[1][1]),this.drawingContext.lineTo(f[2][0],f[2][1]),this._doFill&&this.fill(f[2][5]),this._doStroke&&this.stroke(f[2][6]),this._doFillStrokeClose(),g=3;m>g;g++)b=f[g],this.drawingContext.beginPath(),this.drawingContext.moveTo(f[0][0],f[0][1]),this.drawingContext.lineTo(f[g-1][0],f[g-1][1]),this.drawingContext.lineTo(b[0],b[1]),this._doFill&&this.fill(b[5]),this._doStroke&&this.stroke(b[6]),this._doFillStrokeClose()}else if(e===c.QUADS)for(g=0;m>g+3;g+=4){for(b=f[g],this.drawingContext.beginPath(),this.drawingContext.moveTo(b[0],b[1]),l=1;4>l;l++)this.drawingContext.lineTo(f[g+l][0],f[g+l][1]);this.drawingContext.lineTo(b[0],b[1]),this._doFill&&this.fill(f[g+3][5]),this._doStroke&&this.stroke(f[g+3][6]),this._doFillStrokeClose()}else if(e===c.QUAD_STRIP){if(m>3)for(g=0;m>g+1;g+=2)b=f[g],this.drawingContext.beginPath(),m>g+3?(this.drawingContext.moveTo(f[g+2][0],f[g+2][1]),this.drawingContext.lineTo(b[0],b[1]),this.drawingContext.lineTo(f[g+1][0],f[g+1][1]),this.drawingContext.lineTo(f[g+3][0],f[g+3][1]),this._doFill&&this.fill(f[g+3][5]),this._doStroke&&this.stroke(f[g+3][6])):(this.drawingContext.moveTo(b[0],b[1]),this.drawingContext.lineTo(f[g+1][0],f[g+1][1])),this._doFillStrokeClose()}else{for(this.drawingContext.beginPath(),this.drawingContext.moveTo(f[0][0],f[0][1]),g=1;m>g;g++)b=f[g],b.isVert&&(b.moveTo?this.drawingContext.moveTo(b[0],b[1]):this.drawingContext.lineTo(b[0],b[1]));this._doFillStrokeClose()}else{for(this.drawingContext.beginPath(),g=0;m>g;g++)f[g].isVert?f[g].moveTo?this.drawingContext.moveTo([0],f[g][1]):this.drawingContext.lineTo(f[g][0],f[g][1]):this.drawingContext.quadraticCurveTo(f[g][0],f[g][1],f[g][2],f[g][3]);this._doFillStrokeClose()}else{for(this.drawingContext.beginPath(),g=0;m>g;g++)f[g].isVert?f[g].moveTo?this.drawingContext.moveTo(f[g][0],f[g][1]):this.drawingContext.lineTo(f[g][0],f[g][1]):this.drawingContext.bezierCurveTo(f[g][0],f[g][1],f[g][2],f[g][3],f[g][4],f[g][5]);this._doFillStrokeClose()}else if(m>3){var n=[],o=1-this._curveTightness;for(this.drawingContext.beginPath(),this.drawingContext.moveTo(f[1][0],f[1][1]),g=1;m>g+2;g++)b=f[g],n[0]=[b[0],b[1]],n[1]=[b[0]+(o*f[g+1][0]-o*f[g-1][0])/6,b[1]+(o*f[g+1][1]-o*f[g-1][1])/6],n[2]=[f[g+1][0]+(o*f[g][0]-o*f[g+2][0])/6,f[g+1][1]+(o*f[g][1]-o*f[g+2][1])/6],n[3]=[f[g+1][0],f[g+1][1]],this.drawingContext.bezierCurveTo(n[1][0],n[1][1],n[2][0],n[2][1],n[3][0],n[3][1]);d&&this.drawingContext.lineTo(f[g+1][0],f[g+1][1]),this._doFillStrokeClose()}return i=!1,h=!1,j=!1,k=!1,d&&f.pop(),this},d.prototype.quadraticVertex=function(a,b,d,e){if(this._contourInited){var h={};return h.x=a,h.y=b,h.x3=d,h.y3=e,h.type=c.QUADRATIC,this._contourVertices.push(h),this}if(!(f.length>0))throw"vertex() must be used once before calling quadraticVertex()";j=!0;for(var i=[],l=0;l<arguments.length;l++)i[l]=arguments[l];return i.isVert=!1,k?g.push(i):f.push(i),this},d.prototype.vertex=function(a,b,c){var d=[];return d.isVert=!0,d[0]=a,d[1]=b,d[2]=0,d[3]=0,d[4]=0,d[5]=this.drawingContext.fillStyle,d[6]=this.drawingContext.strokeStyle,c&&(d.moveTo=c),k?(0===g.length&&(d.moveTo=!0),g.push(d)):f.push(d),this},d}({},amdclean.core,amdclean.constants),amdclean.structure=function(a,b){"use strict";var c=b;return c.prototype.exit=function(){throw"exit() not implemented, see remove()"},c.prototype.noLoop=function(){this._loop=!1,this._drawInterval&&clearInterval(this._drawInterval)},c.prototype.loop=function(){this._loop=!0,this._draw()},c.prototype.push=function(){this.drawingContext.save(),this._styles.push({doStroke:this._doStroke,doFill:this._doFill,tint:this._tint,imageMode:this._imageMode,rectMode:this._rectMode,ellipseMode:this._ellipseMode,colorMode:this._colorMode,textFont:this.textFont,textLeading:this.textLeading,textSize:this.textSize,textStyle:this.textStyle})},c.prototype.pop=function(){this.drawingContext.restore();var a=this._styles.pop();this._doStroke=a.doStroke,this._doFill=a.doFill,this._tint=a.tint,this._imageMode=a.imageMode,this._rectMode=a.rectMode,this._ellipseMode=a.ellipseMode,this._colorMode=a.colorMode,this.textFont=a.textFont,this.textLeading=a.textLeading,this.textSize=a.textSize,this.textStyle=a.textStyle},c.prototype.pushStyle=function(){throw new Error("pushStyle() not used, see push()")},c.prototype.popStyle=function(){throw new Error("popStyle() not used, see pop()")},c.prototype.redraw=function(){var a=this.setup||window.setup,b=this.draw||window.draw;"function"==typeof b&&(this.push(),"undefined"==typeof a&&this.scale(this._pixelDensity,this._pixelDensity),this._registeredMethods.pre.forEach(function(a){a.call(this)}),b(),this._registeredMethods.post.forEach(function(a){a.call(this)}),this.pop())},c.prototype.size=function(){throw"size() not implemented, see createCanvas()"},c}({},amdclean.core),amdclean.transform=function(a,b,c){"use strict";var d=b,c=c;return d.prototype.applyMatrix=function(a,b,c,d,e,f){return this.drawingContext.transform(a,b,c,d,e,f),this},d.prototype.popMatrix=function(){throw new Error("popMatrix() not used, see pop()")},d.prototype.printMatrix=function(){throw new Error("printMatrix() not implemented")},d.prototype.pushMatrix=function(){throw new Error("pushMatrix() not used, see push()")},d.prototype.resetMatrix=function(){return this.drawingContext.setTransform(1,0,0,1,0,0),this},d.prototype.rotate=function(a){return this._angleMode===c.DEGREES&&(a=this.radians(a)),this.drawingContext.rotate(a),this},d.prototype.rotateX=function(){throw"not yet implemented"},d.prototype.rotateY=function(){throw"not yet implemented"},d.prototype.scale=function(){var a=1,b=1;return 1===arguments.length?a=b=arguments[0]:(a=arguments[0],b=arguments[1]),this.drawingContext.scale(a,b),this},d.prototype.shearX=function(a){return this._angleMode===c.DEGREES&&(a=this.radians(a)),this.drawingContext.transform(1,0,this.tan(a),1,0,0),this},d.prototype.shearY=function(a){return this._angleMode===c.DEGREES&&(a=this.radians(a)),this.drawingContext.transform(1,this.tan(a),0,1,0,0),this},d.prototype.translate=function(a,b){return this.drawingContext.translate(a,b),this},d}({},amdclean.core,amdclean.constants,amdclean.outputtext_area),amdclean.typographyattributes=function(a,b,c){"use strict";var d=b,c=c;return d.prototype._textLeading=15,d.prototype._textFont="sans-serif",d.prototype._textSize=12,d.prototype._textStyle=c.NORMAL,d.prototype._textAscent=null,d.prototype._textDescent=null,d.prototype.textAlign=function(a,b){(a===c.LEFT||a===c.RIGHT||a===c.CENTER)&&(this.drawingContext.textAlign=a),(b===c.TOP||b===c.BOTTOM||b===c.CENTER||b===c.BASELINE)&&(this.drawingContext.textBaseline=b)},d.prototype.textLeading=function(a){this._setProperty("_textLeading",a)},d.prototype.textSize=function(a){this._setProperty("_textSize",a),this._setProperty("_textLeading",1.25*a),this._applyTextProperties()},d.prototype.textStyle=function(a){(a===c.NORMAL||a===c.ITALIC||a===c.BOLD)&&(this._setProperty("_textStyle",a),this._applyTextProperties())},d.prototype.textWidth=function(a){return this.drawingContext.measureText(a).width},d.prototype.textAscent=function(){return null==this._textAscent&&this._updateTextMetrics(),this._textAscent},d.prototype.textDescent=function(){return null==this._textDescent&&this._updateTextMetrics(),this._textDescent},d.prototype._applyTextProperties=function(){this._setProperty("_textAscent",null),this._setProperty("_textDescent",null);var a=this._textStyle+" "+this._textSize+"px "+this._textFont;this.drawingContext.font=a},d.prototype._updateTextMetrics=function(){var a=document.createElement("span");a.style.fontFamily=this._textFont,a.style.fontSize=this._textSize+"px",a.innerHTML="ABCjgq|";var b=document.createElement("div");b.style.display="inline-block",b.style.width="1px",b.style.height="0px";var c=document.createElement("div");c.appendChild(a),c.appendChild(b),c.style.height="0px",c.style.overflow="hidden",document.body.appendChild(c),b.style.verticalAlign="baseline";var d=this._calculateOffset(b),e=this._calculateOffset(a),f=d[1]-e[1];b.style.verticalAlign="bottom",d=this._calculateOffset(b),e=this._calculateOffset(a);var 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