bio-pv/bio-pv.min.js

WebGL protein viewer

/**
 * PV - WebGL protein viewer v1.8.1
 * http://biasmv.github.io/pv
 * 
 * Copyright 2013-2015 Marco Biasini
 * Released under the MIT license
 */
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c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=b[9],m=b[10],n=b[11],o=b[12],p=b[13],q=b[14],r=b[15],s=c*h-d*g,t=c*i-e*g,u=c*j-f*g,v=d*i-e*h,w=d*j-f*h,x=e*j-f*i,y=k*p-l*o,z=k*q-m*o,A=k*r-n*o,B=l*q-m*p,C=l*r-n*p,D=m*r-n*q,E=s*D-t*C+u*B+v*A-w*z+x*y;return E?(E=1/E,a[0]=(h*D-i*C+j*B)*E,a[1]=(e*C-d*D-f*B)*E,a[2]=(p*x-q*w+r*v)*E,a[3]=(m*w-l*x-n*v)*E,a[4]=(i*A-g*D-j*z)*E,a[5]=(c*D-e*A+f*z)*E,a[6]=(q*u-o*x-r*t)*E,a[7]=(k*x-m*u+n*t)*E,a[8]=(g*C-h*A+j*y)*E,a[9]=(d*A-c*C-f*y)*E,a[10]=(o*w-p*u+r*s)*E,a[11]=(l*u-k*w-n*s)*E,a[12]=(h*z-g*B-i*y)*E,a[13]=(c*B-d*z+e*y)*E,a[14]=(p*t-o*v-q*s)*E,a[15]=(k*v-l*t+m*s)*E,a):null},i.adjoint=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=b[9],m=b[10],n=b[11],o=b[12],p=b[13],q=b[14],r=b[15];return a[0]=h*(m*r-n*q)-l*(i*r-j*q)+p*(i*n-j*m),a[1]=-(d*(m*r-n*q)-l*(e*r-f*q)+p*(e*n-f*m)),a[2]=d*(i*r-j*q)-h*(e*r-f*q)+p*(e*j-f*i),a[3]=-(d*(i*n-j*m)-h*(e*n-f*m)+l*(e*j-f*i)),a[4]=-(g*(m*r-n*q)-k*(i*r-j*q)+o*(i*n-j*m)),a[5]=c*(m*r-n*q)-k*(e*r-f*q)+o*(e*n-f*m),a[6]=-(c*(i*r-j*q)-g*(e*r-f*q)+o*(e*j-f*i)),a[7]=c*(i*n-j*m)-g*(e*n-f*m)+k*(e*j-f*i),a[8]=g*(l*r-n*p)-k*(h*r-j*p)+o*(h*n-j*l),a[9]=-(c*(l*r-n*p)-k*(d*r-f*p)+o*(d*n-f*l)),a[10]=c*(h*r-j*p)-g*(d*r-f*p)+o*(d*j-f*h),a[11]=-(c*(h*n-j*l)-g*(d*n-f*l)+k*(d*j-f*h)),a[12]=-(g*(l*q-m*p)-k*(h*q-i*p)+o*(h*m-i*l)),a[13]=c*(l*q-m*p)-k*(d*q-e*p)+o*(d*m-e*l),a[14]=-(c*(h*q-i*p)-g*(d*q-e*p)+o*(d*i-e*h)),a[15]=c*(h*m-i*l)-g*(d*m-e*l)+k*(d*i-e*h),a},i.determinant=function(a){var b=a[0],c=a[1],d=a[2],e=a[3],f=a[4],g=a[5],h=a[6],i=a[7],j=a[8],k=a[9],l=a[10],m=a[11],n=a[12],o=a[13],p=a[14],q=a[15],r=b*g-c*f,s=b*h-d*f,t=b*i-e*f,u=c*h-d*g,v=c*i-e*g,w=d*i-e*h,x=j*o-k*n,y=j*p-l*n,z=j*q-m*n,A=k*p-l*o,B=k*q-m*o,C=l*q-m*p;return r*C-s*B+t*A+u*z-v*y+w*x},i.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=b[9],n=b[10],o=b[11],p=b[12],q=b[13],r=b[14],s=b[15],t=c[0],u=c[1],v=c[2],w=c[3];return a[0]=t*d+u*h+v*l+w*p,a[1]=t*e+u*i+v*m+w*q,a[2]=t*f+u*j+v*n+w*r,a[3]=t*g+u*k+v*o+w*s,t=c[4],u=c[5],v=c[6],w=c[7],a[4]=t*d+u*h+v*l+w*p,a[5]=t*e+u*i+v*m+w*q,a[6]=t*f+u*j+v*n+w*r,a[7]=t*g+u*k+v*o+w*s,t=c[8],u=c[9],v=c[10],w=c[11],a[8]=t*d+u*h+v*l+w*p,a[9]=t*e+u*i+v*m+w*q,a[10]=t*f+u*j+v*n+w*r,a[11]=t*g+u*k+v*o+w*s,t=c[12],u=c[13],v=c[14],w=c[15],a[12]=t*d+u*h+v*l+w*p,a[13]=t*e+u*i+v*m+w*q,a[14]=t*f+u*j+v*n+w*r,a[15]=t*g+u*k+v*o+w*s,a},i.fromMat3=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=0,a[4]=b[3],a[5]=b[4],a[6]=b[5],a[7]=0,a[8]=b[6],a[9]=b[7],a[10]=b[8],a[11]=0,a[12]=0,a[13]=0,a[14]=0,a[15]=1,a},i.mul=i.multiply,i.translate=function(a,b,c){var d,e,f,g,h,i,j,k,l,m,n,o,p=c[0],q=c[1],r=c[2];return 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Math.abs(G)<b?null:(G=1/G,D*=G,E*=G,F*=G,f=Math.sin(d),g=Math.cos(d),h=1-g,i=c[0],j=c[1],k=c[2],l=c[3],m=c[4],n=c[5],o=c[6],p=c[7],q=c[8],r=c[9],s=c[10],t=c[11],u=D*D*h+g,v=E*D*h+F*f,w=F*D*h-E*f,x=D*E*h-F*f,y=E*E*h+g,z=F*E*h+D*f,A=D*F*h+E*f,B=E*F*h-D*f,C=F*F*h+g,a[0]=i*u+m*v+q*w,a[1]=j*u+n*v+r*w,a[2]=k*u+o*v+s*w,a[3]=l*u+p*v+t*w,a[4]=i*x+m*y+q*z,a[5]=j*x+n*y+r*z,a[6]=k*x+o*y+s*z,a[7]=l*x+p*y+t*z,a[8]=i*A+m*B+q*C,a[9]=j*A+n*B+r*C,a[10]=k*A+o*B+s*C,a[11]=l*A+p*B+t*C,c!==a&&(a[12]=c[12],a[13]=c[13],a[14]=c[14],a[15]=c[15]),a)},i.rotateX=function(a,b,c){var d=Math.sin(c),e=Math.cos(c),f=b[4],g=b[5],h=b[6],i=b[7],j=b[8],k=b[9],l=b[10],m=b[11];return b!==a&&(a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[12]=b[12],a[13]=b[13],a[14]=b[14],a[15]=b[15]),a[4]=f*e+j*d,a[5]=g*e+k*d,a[6]=h*e+l*d,a[7]=i*e+m*d,a[8]=j*e-f*d,a[9]=k*e-g*d,a[10]=l*e-h*d,a[11]=m*e-i*d,a},i.rotateY=function(a,b,c){var d=Math.sin(c),e=Math.cos(c),f=b[0],g=b[1],h=b[2],i=b[3],j=b[8],k=b[9],l=b[10],m=b[11];return b!==a&&(a[4]=b[4],a[5]=b[5],a[6]=b[6],a[7]=b[7],a[12]=b[12],a[13]=b[13],a[14]=b[14],a[15]=b[15]),a[0]=f*e-j*d,a[1]=g*e-k*d,a[2]=h*e-l*d,a[3]=i*e-m*d,a[8]=f*d+j*e,a[9]=g*d+k*e,a[10]=h*d+l*e,a[11]=i*d+m*e,a},i.rotateZ=function(a,b,c){var d=Math.sin(c),e=Math.cos(c),f=b[0],g=b[1],h=b[2],i=b[3],j=b[4],k=b[5],l=b[6],m=b[7];return b!==a&&(a[8]=b[8],a[9]=b[9],a[10]=b[10],a[11]=b[11],a[12]=b[12],a[13]=b[13],a[14]=b[14],a[15]=b[15]),a[0]=f*e+j*d,a[1]=g*e+k*d,a[2]=h*e+l*d,a[3]=i*e+m*d,a[4]=j*e-f*d,a[5]=k*e-g*d,a[6]=l*e-h*d,a[7]=m*e-i*d,a},i.fromRotationTranslation=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=d+d,i=e+e,j=f+f,k=d*h,l=d*i,m=d*j,n=e*i,o=e*j,p=f*j,q=g*h,r=g*i,s=g*j;return a[0]=1-(n+p),a[1]=l+s,a[2]=m-r,a[3]=0,a[4]=l-s,a[5]=1-(k+p),a[6]=o+q,a[7]=0,a[8]=m+r,a[9]=o-q,a[10]=1-(k+n),a[11]=0,a[12]=c[0],a[13]=c[1],a[14]=c[2],a[15]=1,a},i.fromQuat=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=c+c,h=d+d,i=e+e,j=c*g,k=c*h,l=c*i,m=d*h,n=d*i,o=e*i,p=f*g,q=f*h,r=f*i;return a[0]=1-(m+o),a[1]=k+r,a[2]=l-q,a[3]=0,a[4]=k-r,a[5]=1-(j+o),a[6]=n+p,a[7]=0,a[8]=l+q,a[9]=n-p,a[10]=1-(j+m),a[11]=0,a[12]=0,a[13]=0,a[14]=0,a[15]=1,a},i.frustum=function(a,b,c,d,e,f,g){var h=1/(c-b),i=1/(e-d),j=1/(f-g);return a[0]=2*f*h,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=2*f*i,a[6]=0,a[7]=0,a[8]=(c+b)*h,a[9]=(e+d)*i,a[10]=(g+f)*j,a[11]=-1,a[12]=0,a[13]=0,a[14]=g*f*2*j,a[15]=0,a},i.perspective=function(a,b,c,d,e){var f=1/Math.tan(b/2),g=1/(d-e);return a[0]=f/c,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=f,a[6]=0,a[7]=0,a[8]=0,a[9]=0,a[10]=(e+d)*g,a[11]=-1,a[12]=0,a[13]=0,a[14]=2*e*d*g,a[15]=0,a},i.ortho=function(a,b,c,d,e,f,g){var h=1/(b-c),i=1/(d-e),j=1/(f-g);return a[0]=-2*h,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=-2*i,a[6]=0,a[7]=0,a[8]=0,a[9]=0,a[10]=2*j,a[11]=0,a[12]=(b+c)*h,a[13]=(e+d)*i,a[14]=(g+f)*j,a[15]=1,a},i.lookAt=function(a,c,d,e){var f,g,h,j,k,l,m,n,o,p,q=c[0],r=c[1],s=c[2],t=e[0],u=e[1],v=e[2],w=d[0],x=d[1],y=d[2];return 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},_eh:function(){try{var a={antialias:this._dy&&!this._dh,preserveDrawingBuffer:!0};this._b=this._c.getContext("experimental-webgl",a)}catch(b){return!1}return this._b?!0:!1},_dd:function(a){var b=1/a,c=.5*-(1-b)*this._bb,d=.5*-(1-b)*this._bc,e="translate("+c+"px, "+d+"px)",f="scale("+b+", "+b+")",g=e+" "+f;this._c.style.webkitTransform=g,this._c.style.transform=g,this._c.style.ieTransform=g,this._c.width=this._bb,this._c.height=this._bc},initGL:function(){var a=1;if(!this._eh())return!1;var b=this._b;return b.getContextAttributes().antialias&&!this._dh||!this._dy||(a=2),this._bb=this._k*a,this._bc=this._l*a,this._br=a,a>1&&this._dd(a),b.viewportWidth=this._bb,b.viewportHeight=this._bc,b.clearColor(this._cB[0],this._cB[1],this._cB[2],1),b.lineWidth(2),b.cullFace(b.FRONT),b.enable(b.CULL_FACE),b.enable(b.DEPTH_TEST),!0},_cM:function(a,b,c){var d,e=this._b;if("fragment"===b)d=e.createShader(e.FRAGMENT_SHADER);else{if("vertex"!==b)return null;d=e.createShader(e.VERTEX_SHADER)}var f=a.replace("${PRECISION}",c);return e.shaderSource(d,f),e.compileShader(d),e.getShaderParameter(d,e.COMPILE_STATUS)?d:null},initShader:function(a,b,c){var e=this._b,f=this._cM(b,"fragment",c),g=this._cM(a,"vertex",c),h=e.createProgram();if(e.attachShader(h,g),e.attachShader(h,f),e.linkProgram(h),!e.getProgramParameter(h,e.LINK_STATUS))return null;var i=d.bind(e,e.getAttribLocation),j=d.bind(e,e.getUniformLocation);return h.posAttrib=i(h,"attrPos"),h.colorAttrib=i(h,"attrColor"),h.normalAttrib=i(h,"attrNormal"),h.objIdAttrib=i(h,"attrObjId"),h.selectAttrib=i(h,"attrSelect"),h.symId=j(h,"symId"),h.projection=j(h,"projectionMat"),h.modelview=j(h,"modelviewMat"),h.rotation=j(h,"rotationMat"),h.fog=j(h,"fog"),h.fogFar=j(h,"fogFar"),h.fogNear=j(h,"fogNear"),h.fogColor=j(h,"fogColor"),h.outlineColor=j(h,"outlineColor"),h.outlineWidth=j(h,"outlineWidth"),h.relativePixelSize=j(h,"relativePixelSize"),h.screenDoorTransparency=j(h,"screenDoorTransparency"),h.selectionColor=j(h,"selectionColor"),h.pointSize=j(h,"pointSize"),h.zoom=j(h,"zoom"),h},on:function(a,b){this._c.addEventListener(a,b,!1)},removeEventListener:function(a,b){this._c.removeEventListener(a,b,!1)},onWheel:function(a,b){"onwheel"in this._c?this.on("wheel",a):this.on("mousewheel",b)},domElement:function(){return this._c},bind:function(){this._cs(),this._b.viewport(0,0,this._bb,this._bc)},superSamplingFactor:function(){return this._br},viewportWidth:function(){return this._bb},viewportHeight:function(){return this._bc},width:function(){return this._k},height:function(){return this._l},_cj:function(){this._c=document.createElement("canvas"),this._c.width=this._k,this._c.height=this._l,this._E.appendChild(this._c)},isWebGLSupported:function(){return a(this._b)},destroy:function(){this._c.width=1,this._c.height=1,this._c.parentElement.removeChild(this._c),this._c=null}},{Canvas:b,isWebGLSupported:a}}(),f=function(){function a(a,b){this._k=b.width,this._l=b.height,this._dt=this._k,this._du=this._l,this._b=a,this._ds=a.createFramebuffer(),a.bindFramebuffer(a.FRAMEBUFFER,this._ds),this._bB=a.createRenderbuffer(),a.bindRenderbuffer(a.RENDERBUFFER,this._bB),a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_COMPONENT16,this._k,this._l),a.framebufferRenderbuffer(a.FRAMEBUFFER,a.DEPTH_ATTACHMENT,a.RENDERBUFFER,this._bB),this._bD=a.createTexture(),this._ei()}return a.prototype={width:function(){return this._k},height:function(){return this._l},bind:function(){var a=this._b;a.bindFramebuffer(a.FRAMEBUFFER,this._ds),a.bindRenderbuffer(a.RENDERBUFFER,this._bB),(this._dt!==this._k||this._du!==this._l)&&this._dN(),a.viewport(0,0,this._k,this._l)},colorTexture:function(){return this._bD},_ei:function(){this.bind();var a=this._b;a.bindTexture(a.TEXTURE_2D,this._bD),a.texImage2D(a.TEXTURE_2D,0,a.RGBA,this._k,this._l,0,a.RGBA,a.UNSIGNED_BYTE,null),a.framebufferTexture2D(a.FRAMEBUFFER,a.COLOR_ATTACHMENT0,a.TEXTURE_2D,this._bD,0),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_MIN_FILTER,a.LINEAR),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_MAG_FILTER,a.LINEAR),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_WRAP_S,a.CLAMP_TO_EDGE),a.texParameteri(a.TEXTURE_2D,a.TEXTURE_WRAP_T,a.CLAMP_TO_EDGE),a.bindTexture(a.TEXTURE_2D,null),this.release()},_dN:function(){var a=this._b;a.bindRenderbuffer(a.RENDERBUFFER,this._bB),a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_COMPONENT16,this._k,this._l),a.bindTexture(a.TEXTURE_2D,this._bD),a.texImage2D(a.TEXTURE_2D,0,a.RGBA,this._k,this._l,0,a.RGBA,a.UNSIGNED_BYTE,null),a.framebufferTexture2D(a.FRAMEBUFFER,a.COLOR_ATTACHMENT0,a.TEXTURE_2D,this._bD,0),a.framebufferRenderbuffer(a.FRAMEBUFFER,a.DEPTH_ATTACHMENT,a.RENDERBUFFER,this._bB),a.bindTexture(a.TEXTURE_2D,null),this._dt=this._k,this._du=this._l},resize:function(a,b){this._k=a,this._l=b},release:function(){var a=this._b;a.bindFramebuffer(a.FRAMEBUFFER,null),a.bindRenderbuffer(a.RENDERBUFFER,null)}},a}(),g=function(){function a(a){this._bA=[],this._ev=a}return a.prototype.request=function(a){for(var b=-1,c=null,d=0;d<this._bA.length;++d){var e=this._bA[d],f=e.length;f>=a&&(null===c||c>f)&&(c=f,b=d)}if(-1!==b){var g=this._bA[b];return this._bA.splice(b,1),g}return new this._ev(a)},a.prototype.release=function(a){this._bA.push(a)},a}(),h=function(){function b(a){this._b7=d.create(),this._N=d.create(),this._c6=d.create(),this._o=d.create(),this._bI=d.create(),this._bd=.1,this._5=4e3,this._di=-5,this._dj=50,this._bS=!0,this._cp=45*Math.PI/180,this._dk=c.fromValues(1,1,1),this._c0=c.fromValues(.1,.1,.1),this._ca=1,this._cO=c.fromValues(.1,1,.1),this._U=c.create(),this._L=50,this._cP=!1,this._7=!0,this._F=!0,this._0=1,this._b=a,this._bU=null,this._bp=0,this.setViewportSize(a.viewportWidth,a.viewportHeight)}var c=a.vec3,d=a.mat4;return b.prototype={_bz:function(){this._bp+=1,this._bp>68719476735&&(this._bp=0)},setScreenDoorTransparency:function(a){this._cP=a,this._bz()},setOutlineWidth:function(a){this._ca!==a&&(this._ca=a,this._bz())},setRotation:function(a){16===a.length?d.copy(this._o,a):d.fromMat3(this._o,a),this._F=!0},upsamplingFactor:function(){return this._0},setUpsamplingFactor:function(a){if(this._0!==a){this._bz(),this._0=a;var b=this._0/this._k,c=this._0/this._l;this._cS=new Float32Array([b,c])}},mainAxes:function(){return[c.fromValues(this._o[0],this._o[4],this._o[8]),c.fromValues(this._o[1],this._o[5],this._o[9]),c.fromValues(this._o[2],this._o[6],this._o[10])]},fieldOfViewY:function(){return this._cp},setFieldOfViewY:function(a){this._cp=a,this._7=!0},aspectRatio:function(){return this._k/this._l},rotation:function(){return this._o},_dE:function(){var a=!1;return this._F&&(d.identity(this._N),d.translate(this._N,this._N,[-this._U[0],-this._U[1],-this._U[2]]),d.mul(this._N,this._o,this._N),d.identity(this._bI),d.translate(this._bI,this._bI,[0,0,-this._L]),d.mul(this._N,this._bI,this._N),a=!0),this._7&&(d.identity(this._b7),d.perspective(this._b7,this._cp,this._k/this._l,this._bd,this._5),a=!0),this._7=!1,this._F=!1,a&&this._bz(),a},setViewportSize:function(a,b){this._7=!0,this._k=a,this._l=b,this._cS=new Float32Array([this._0/a,this._0/b])},viewportWidth:function(){return this._k},viewportHeight:function(){return this._l},setCenter:function(a){this._F=!0,c.copy(this._U,a)},fog:function(a){return void 0!==a&&a!==this._bS&&(this._bS=a,this._bz()),this._bS},rotateZ:function(){var a=d.create();return function(b){d.identity(a),this._F=!0,d.rotate(a,a,b,[0,0,1]),d.mul(this._o,a,this._o)}}(),rotateX:function(){var a=d.create();return function(b){d.identity(a),this._F=!0,d.rotate(a,a,b,[1,0,0]),d.mul(this._o,a,this._o)}}(),rotateY:function(){var a=d.create();return function(b){d.identity(a),this._F=!0,d.rotate(a,a,b,[0,1,0]),d.mul(this._o,a,this._o)}}(),panX:function(a){return this.panXY(a,0)},panY:function(a){return this.panXY(0,a)},panXY:function(){var a=d.create(),b=c.create();return function(e,f){d.transpose(a,this._o),this._F=!0,c.set(b,-e,f,0),c.transformMat4(b,b,a),c.add(b,b,this._U),this.setCenter(b)}}(),nearOffset:function(){return this._bd},farOffset:function(){return this._5},setNearFar:function(a,b){(a!==this._bd||b!==this._5)&&(this._bd=a,this._5=b,this._7=!0)},setFogNearFar:function(a,b){this._di=a,this._dj=b,this._7=!0},setZoom:function(a){return this._F=!0,this._L=a,this._L},zoom:function(a){if(void 0===a)return this._L;this._F=!0;var b=1+.1*a;return this._L=Math.min(1e3,Math.max(2,b*this._L)),this._L},center:function(){return this._U},setFogColor:function(a){this._dk=c.clone(a)},currentShader:function(){return this._bU},invalidateCurrentShader:function(){this._bU=null},setOutlineColor:function(a){this._c0=c.clone(a)},setSelectionColor:function(a){this._cO=c.clone(a)},bind:function(a,b){var c=!1,e=this._b;if(this._bU!==a&&(this._bU=a,e.useProgram(a),c=!0),c=this._dE()||c,b?(d.mul(this._c6,this._N,b),e.uniformMatrix4fv(a.modelview,!1,this._c6)):e.uniformMatrix4fv(a.modelview,!1,this._N),this._bp!==a.stateId){a.stateId=this._bp,e.uniformMatrix4fv(a.projection,!1,this._b7),a.rotation&&e.uniformMatrix4fv(a.rotation,!1,this._o),e.uniform1i(a.fog,this._bS);var f=this._L;e.uniform1f(a.fogFar,this._dj+f),e.uniform1f(a.zoom,this._L),e.uniform1f(a.fogNear,this._di+f),e.uniform3fv(a.fogColor,this._dk),e.uniform3fv(a.outlineColor,this._c0),e.uniform3fv(a.selectionColor,this._cO),e.uniform2fv(a.relativePixelSize,this._cS),e.uniform1f(a.outlineWidth,this._ca),e.uniform1i(a.screenDoorTransparency,this._cP)}}},b}(),i={PRELUDE_FS:"\nprecision ${PRECISION} float;\nuniform bool screenDoorTransparency;\nvec4 handleAlpha(vec4 inColor) {\n  if (screenDoorTransparency) {\n    ivec2 pxCoord = ivec2(gl_FragCoord.xy);\n    ivec2 mod = pxCoord - (pxCoord/2) * 2;\n    if (inColor.a < 0.99 &&\n        (inColor.a < 0.01 || mod.x != 0 || mod.y != 0)) { discard; }\n    return vec4(inColor.rgb, 1.0);\n  } else {\n    if (inColor.a == 0.0) { discard; }\n    return inColor;\n  } \n} \nuniform vec3 selectionColor;\n\nvec3 handleSelect(vec3 inColor, float vertSelect) { \n  return mix(inColor, selectionColor, step(0.5, vertSelect) * 0.7); \n} \n\nuniform bool fog;\nuniform float fogNear;\nuniform float fogFar;\nuniform vec3 fogColor;\nvec3 handleFog(vec3 inColor) {\n  if (fog) {\n    float depth = gl_FragCoord.z / gl_FragCoord.w;\n    float fogFactor = smoothstep(fogNear, fogFar, depth);\n    return mix(inColor, fogColor, fogFactor);\n  } else {\n    return inColor;\n  }\n}",LINES_FS:"\nvarying vec4 vertColor;\nvarying vec3 vertNormal;\n\nvoid main(void) {\n  gl_FragColor = handleAlpha(vertColor);\n  gl_FragColor.rgb = handleFog(gl_FragColor.rgb);\n}",SELECT_LINES_FS:"\nprecision ${PRECISION} float;\n\nvarying float vertSelect;\nvarying vec3 vertNormal;\nuniform float fogNear;\nuniform float fogFar;\nuniform vec3 fogColor;\nuniform bool fog;\nuniform vec3 selectionColor;\n\nvoid main(void) {\n  gl_FragColor = mix(vec4(0.0, 0.0, 0.0, 0.0), vec4(selectionColor, 1.0), \n                     vertSelect);\n  gl_FragColor.a = step(0.5, vertSelect);\n  if (gl_FragColor.a == 0.0) { discard; }\n  float depth = gl_FragCoord.z / gl_FragCoord.w;\n  if (fog) {\n    float fog_factor = smoothstep(fogNear, fogFar, depth);\n    gl_FragColor = mix(gl_FragColor, vec4(fogColor, gl_FragColor.w),\n                        fog_factor);\n  }\n}",SELECT_LINES_VS:"\nattribute vec3 attrPos;\nattribute float attrSelect;\n\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nuniform float pointSize;\nvarying float vertSelect;\nvoid main(void) {\n  gl_Position = projectionMat * modelviewMat * vec4(attrPos, 1.0);\n  gl_Position.z += gl_Position.w * 0.000001; \n  float distToCamera = vec4(modelviewMat * vec4(attrPos, 1.0)).z;\n  gl_PointSize = pointSize * 200.0 / abs(distToCamera); \n  vertSelect = attrSelect;\n}",SELECT_VS:"\nprecision ${PRECISION} float;\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nuniform float pointSize;\nattribute vec3 attrPos;\nattribute float attrObjId;\n\nvarying float objId;\n\nvoid main(void) {\n  gl_Position = projectionMat * modelviewMat * vec4(attrPos, 1.0);\n  float distToCamera = vec4(modelviewMat * vec4(attrPos, 1.0)).z;\n  gl_PointSize = pointSize * 200.0 / abs(distToCamera); \n  objId = attrObjId;\n}",SELECT_FS:"\nprecision ${PRECISION} float;\n\nvarying float objId;\nuniform int symId;\n\nint intMod(int x, int y) { \n  int z = x/y;\n  return x-y*z;\n}\nvoid main(void) {\n  // ints are only required to be 7bit...\n  int integralObjId = int(objId+0.5);\n  int red = intMod(integralObjId, 256);\n  integralObjId/=256;\n  int green = intMod(integralObjId, 256);\n  integralObjId/=256;\n  int blue = intMod(integralObjId, 256);\n  int alpha = symId;\n  gl_FragColor = vec4(float(red), float(green), \n                      float(blue), float(alpha))/255.0;\n}",LINES_VS:"\nattribute vec3 attrPos;\nattribute vec4 attrColor;\n\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nvarying vec4 vertColor;\nuniform float pointSize;\nvoid main(void) {\n  gl_Position = projectionMat * modelviewMat * vec4(attrPos, 1.0);\n  float distToCamera = vec4(modelviewMat * vec4(attrPos, 1.0)).z;\n  gl_PointSize = pointSize * 200.0 / abs(distToCamera); \n  vertColor = attrColor;\n}",HEMILIGHT_FS:"\nvarying vec4 vertColor;\nvarying vec3 vertNormal;\nvarying float vertSelect;\n\nvoid main(void) {\n  float dp = dot(vertNormal, vec3(0.0, 0.0, 1.0));\n  float hemi = min(1.0, max(0.0, dp)*0.6+0.5);\n  gl_FragColor = vec4(vertColor.rgb*hemi, vertColor.a);\n  gl_FragColor.rgb = handleFog(handleSelect(gl_FragColor.rgb, vertSelect));\n  gl_FragColor = handleAlpha(gl_FragColor);\n}",PHONG_FS:"\nvarying vec4 vertColor;\nvarying vec3 vertNormal;\nvarying vec3 vertPos;\nuniform float zoom;\nvarying float vertSelect;\n\nvoid main(void) {\n  vec3 eyePos = vec3(0.0, 0.0, zoom);\n  float dp = dot(vertNormal, normalize(eyePos - vertPos));\n  float hemi = min(1.0, max(0.3, dp)+0.2);\n  //hemi *= vertColor.a;\n  vec3 rgbColor = vertColor.rgb * hemi; \n  rgbColor += min(vertColor.rgb, 0.8) * pow(max(0.0, dp), 18.0);\n  rgbColor = handleSelect(rgbColor, vertSelect);\n  gl_FragColor = vec4(clamp(rgbColor, 0.0, 1.0), vertColor.a);\n  gl_FragColor.rgb = handleFog(gl_FragColor.rgb);\n  gl_FragColor = handleAlpha(gl_FragColor);\n}",HEMILIGHT_VS:"\nattribute vec3 attrPos;\nattribute vec4 attrColor;\nattribute vec3 attrNormal;\nattribute float attrSelect;\n\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nvarying vec4 vertColor;\nvarying vec3 vertNormal;\nvarying vec3 vertPos;\nvarying float vertSelect;\nvoid main(void) {\n  vertPos = (modelviewMat * vec4(attrPos, 1.0)).xyz;\n  gl_Position = projectionMat * modelviewMat * vec4(attrPos, 1.0);\n  vec4 n = (modelviewMat * vec4(attrNormal, 0.0));\n  vertNormal = n.xyz;\n  vertColor = attrColor;\n  vertSelect = attrSelect;\n}",OUTLINE_FS:"\nvarying float vertAlpha;\nvarying float vertSelect;\n\nuniform vec3 outlineColor;\n\nvoid main() {\n  gl_FragColor = vec4(mix(outlineColor, selectionColor, \n                          step(0.5, vertSelect)), \n                      vertAlpha);\n  gl_FragColor.rgb = handleFog(gl_FragColor.rgb);\n  gl_FragColor = handleAlpha(gl_FragColor);\n}",OUTLINE_VS:"\nprecision ${PRECISION} float;\n\nattribute vec3 attrPos;\nattribute vec3 attrNormal;\nattribute vec4 attrColor;\nattribute float attrSelect;\n\nuniform vec3 outlineColor;\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nvarying float vertAlpha;\nvarying float vertSelect;\nuniform vec2 relativePixelSize;\nuniform float outlineWidth;\n\nvoid main(void) {\n  gl_Position = projectionMat * modelviewMat * vec4(attrPos, 1.0);\n  vec4 normal = modelviewMat * vec4(attrNormal, 0.0);\n  vertAlpha = attrColor.a;\n  vertSelect = attrSelect;\n  vec2 expansion = relativePixelSize * \n       (outlineWidth + 2.0 * step(0.5, attrSelect));\n  vec2 offset = normal.xy * expansion;\n  gl_Position.xy += gl_Position.w * offset;\n}",TEXT_VS:"\nprecision ${PRECISION} float;\n\nattribute vec3 attrCenter;\nattribute vec2 attrCorner;\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nuniform mat4 rotationMat;\nvarying vec2 vertTex;\nuniform float width;\nuniform float height;\nvoid main() { \n  vec4 pos = modelviewMat* vec4(attrCenter, 1.0);\n  pos.z += 4.0;\n  gl_Position = projectionMat * pos;\n  gl_Position.xy += vec2(width,height)*attrCorner*gl_Position.w; \n  vertTex = (attrCorner+abs(attrCorner))/(2.0*abs(attrCorner)); \n}",TEXT_FS:"\nprecision ${PRECISION} float;\n\nuniform mat4 projectionMat;\nuniform mat4 modelviewMat;\nuniform sampler2D sampler;\nuniform float xScale;\nuniform float yScale;\nvarying vec2 vertTex;\nvoid main() { \n  vec2 texCoord = vec2(vertTex.x*xScale, vertTex.y*yScale);\n  gl_FragColor = texture2D(sampler, texCoord);\n  if (gl_FragColor.a == 0.0) { discard; }\n}"},j=function(){function a(a,b,c){this._bh=a,this._bh.addEventListener("touchmove",d.bind(this,this._dG)),this._bh.addEventListener("touchstart",d.bind(this,this._dF)),this._bh.addEventListener("touchend",d.bind(this,this._cH)),this._bh.addEventListener("touchcancel",d.bind(this,this._cH)),this._8={scale:1,rotation:0,center:null},this._bP=null,this._w=b,this._d=c}function b(a){for(var b=0,c=0,d=0;d<a.length;++d)b+=a[d].clientX,c+=a[d].clientY;return b/=a.length,c/=a.length,{x:b,y:c}}function c(a,b){var c=b.x-a.x,d=b.y-a.y;return Math.sqrt(c*c+d*d)}function e(a,b){var d=c(a[0],a[1]),e=c(b[0],b[1]);return e/(0===d?1:d)}function f(a,b){var c=b.x-a.x,d=b.y-a.y;return Math.atan2(d,c)}function g(a,b){return f(b[1],b[0])-f(a[1],a[0])}return a.prototype={_dm:function(a,c){var d={};d.center=b(c.targetTouches),d.pointers=[];for(var f=0;f<c.targetTouches.length;++f){var h=c.targetTouches[f];d.pointers.push({x:h.clientX,y:h.clientY})}return d.numTouches=c.targetTouches.length,d.rotation=0,d.scale=1,d.deltaScale=0,d.deltaRotation=0,a.center&&(d.deltaCenter={x:d.center.x-a.center.x,y:d.center.y-a.center.y}),2!==a.numTouches||2!==d.numTouches?d:(d.initialPointers=a.initialPointers?a.initialPointers:a.pointers,d.scale=e(d.initialPointers,d.pointers),d.deltaScale=d.scale-a.scale,d.rotation=g(d.initialPointers,d.pointers),d.deltaRotation=d.rotation-a.rotation,d)},_dG:function(a){a.preventDefault();var b=this._dm(this._8,a),c=4*-b.deltaScale;if(0!==c&&this._d.zoom(c),2===b.numTouches&&2===this._8.numTouches){var d=.002*Math.tan(.5*this._d.fieldOfViewY())*this._d.zoom();this._d.panXY(b.deltaCenter.x*d,b.deltaCenter.y*d)}var e=-b.deltaRotation;this._d.rotateZ(e),1===b.numTouches&&1===this._8.numTouches&&(this._d.rotateX(.005*b.delta