(function(a){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.settings");var b={defaultEdgeLabelColor:"#000",defaultEdgeLabelActiveColor:"#000",defaultEdgeLabelSize:10,edgeLabelSize:"fixed",edgeLabelSizePowRatio:1,edgeLabelThreshold:1};sigma.settings=sigma.utils.extend(sigma.settings||{},b),sigma.settings.drawEdgeLabels=!0}).call(this),function(a){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.canvas.edges.labels"),sigma.canvas.edges.labels.curve=function(a,b,c,d,e){if("string"==typeof a.label){var f=e("prefix")||"",g=a[f+"size"]||1;if(!(g<e("edgeLabelThreshold"))){var h,i,j,k=b[f+"size"],l=b[f+"x"],m=b[f+"y"],n=c[f+"x"],o=c[f+"y"],p=n-l,q=o-m,r=l<n?1:-1,s={},t=.5;b.id===c.id?(s=sigma.utils.getSelfLoopControlPoints(l,m,k),i=sigma.utils.getPointOnBezierCurve(t,l,m,n,o,s.x1,s.y1,s.x2,s.y2),j=Math.atan2(1,1)):(s=sigma.utils.getQuadraticControlPoint(l,m,n,o),i=sigma.utils.getPointOnQuadraticCurve(t,l,m,n,o,s.x,s.y),j=Math.atan2(q*r,p*r)),h="fixed"===e("edgeLabelSize")?e("defaultEdgeLabelSize"):e("defaultEdgeLabelSize")*g*Math.pow(g,-1/e("edgeLabelSizePowRatio")),d.save(),a.active?(d.font=[e("activeFontStyle"),h+"px",e("activeFont")||e("font")].join(" "),d.fillStyle="edge"===e("edgeActiveColor")?a.active_color||e("defaultEdgeActiveColor"):e("defaultEdgeLabelActiveColor")):(d.font=[e("fontStyle"),h+"px",e("font")].join(" "),d.fillStyle="edge"===e("edgeLabelColor")?a.color||e("defaultEdgeColor"):e("defaultEdgeLabelColor")),d.textAlign="center",d.textBaseline="alphabetic",d.translate(i.x,i.y),d.rotate(j),d.fillText(a.label,0,-g/2-3),d.restore()}}}}.call(this),function(a){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.canvas.edges.labels"),sigma.canvas.edges.labels.curvedArrow=function(a,b,c,d,e){sigma.canvas.edges.labels.curve(a,b,c,d,e)}}.call(this),function(a){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.canvas.edges.labels"),sigma.canvas.edges.labels.def=function(a,b,c,d,e){if("string"==typeof a.label&&b!=c){var f=e("prefix")||"",g=a[f+"size"]||1;if(!(g<e("edgeLabelThreshold"))){if(0===e("edgeLabelSizePowRatio"))throw'"edgeLabelSizePowRatio" must not be 0.';var h,i=(b[f+"x"]+c[f+"x"])/2,j=(b[f+"y"]+c[f+"y"])/2,k=c[f+"x"]-b[f+"x"],l=c[f+"y"]-b[f+"y"],m=b[f+"x"]<c[f+"x"]?1:-1,n=Math.atan2(l*m,k*m);h="fixed"===e("edgeLabelSize")?e("defaultEdgeLabelSize"):e("defaultEdgeLabelSize")*g*Math.pow(g,-1/e("edgeLabelSizePowRatio")),d.save(),a.active?(d.font=[e("activeFontStyle"),h+"px",e("activeFont")||e("font")].join(" "),d.fillStyle="edge"===e("edgeActiveColor")?a.active_color||e("defaultEdgeActiveColor"):e("defaultEdgeLabelActiveColor")):(d.font=[e("fontStyle"),h+"px",e("font")].join(" "),d.fillStyle="edge"===e("edgeLabelColor")?a.color||e("defaultEdgeColor"):e("defaultEdgeLabelColor")),d.textAlign="center",d.textBaseline="alphabetic",d.translate(i,j),d.rotate(n),d.fillText(a.label,0,-g/2-3),d.restore()}}}}.call(this);