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venn.js
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venn.js
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/**
* Author: Nils Gehlenborg, nils@hms.harvard.edu
*/
/**
* Venn Diagram
* Based on https://gist.github.com/mbostock/1067636.
*/
VennDiagram = function( element, radius ) {
this.element = element;
this.radius = radius;
};
VennDiagram.prototype.isActive = function( areaSets, highlightSubsets ) {
var self = this;
if ( !highlightSubsets ) {
return false;
}
for ( var s = 0; s < highlightSubsets.length; ++s ) {
var hitCounter = 0;
for ( var i = 0; i < areaSets.length; ++i ) {
if ( areaSets[i] === highlightSubsets[s].combinedSets[i] ) {
++hitCounter;
}
}
if ( hitCounter === areaSets.length ) {
return ( true );
}
}
return ( false );
};
VennDiagram.prototype.plot = function( highlightSubsets, setCount ) {
var self = this;
if ( setCount === 2 ) {
self.plot2Set( highlightSubsets );
}
else if ( setCount === 3 ) {
self.plot3Set( highlightSubsets );
}
else {
// console.error( "Venn diagram is only implemented for 2 or 3 sets." );
}
}
VennDiagram.prototype.plot2Set = function( highlightSubsets ) {
var self = this;
var width = self.radius * 550/180 + self.radius;
var height = self.radius * 200/180 + self.radius + .75*self.radius;
d3.select(self.element).html("");
var svg = d3.select(self.element).append("svg:svg")
.attr("width", width)
.attr("height", height);
var vis = svg.append("svg:g")
.attr("width", width)
.attr("height", height)
//.attr( "transform", "scale(0.5)");
vis.append("svg:rect")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [0,0], highlightSubsets ) ? "venn-zero-set-area-active" : "venn-zero-set-area" ); } );
var defs = svg.append("svg:defs");
defs.append("svg:clipPath")
.attr("id", "circle1")
.append("svg:circle")
.attr("cx", self.radius * 350/180 - .5 * self.radius )
.attr("cy", self.radius * 200/180 + .25 * self.radius )
.attr("r", self.radius /*180*/);
defs.append("svg:clipPath")
.attr("id", "circle2")
.append("svg:circle")
.attr("cx", self.radius * 550/180 - .5 * self.radius )
.attr("cy", self.radius * 200/180 + .25 * self.radius)
.attr("r", self.radius /*180*/);
vis.append("svg:rect")
.attr("clip-path", "url(#circle1)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [1,0], highlightSubsets ) ? "venn-one-set-area-active" : "venn-one-set-area" ); } );
vis.append("svg:rect")
.attr("clip-path", "url(#circle2)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [0,1], highlightSubsets ) ? "venn-one-set-area-active" : "venn-one-set-area" ); } );
vis.append("svg:g")
.attr("clip-path", "url(#circle1)")
.append("svg:rect")
.attr("clip-path", "url(#circle2)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [1,1], highlightSubsets ) ? "venn-two-set-area-active" : "venn-two-set-area" ); } );
}
VennDiagram.prototype.plot3Set = function( highlightSubsets ) {
var self = this;
var width = self.radius * 550/180 + self.radius;
var height = self.radius * 300/180 + self.radius + .5*self.radius;
d3.select(self.element).html("");
var svg = d3.select(self.element).append("svg:svg")
.attr("width", width)
.attr("height", height);
var vis = svg.append("svg:g")
.attr("width", width)
.attr("height", height)
//.attr( "transform", "scale(0.5)");
vis.append("svg:rect")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [0,0,0], highlightSubsets ) ? "venn-zero-set-area-active" : "venn-zero-set-area" ); } );
var defs = svg.append("svg:defs");
defs.append("svg:clipPath")
.attr("id", "circle1")
.append("svg:circle")
.attr("cx", self.radius * 350/180 - .5 * self.radius )
.attr("cy", self.radius * 200/180 + .25 * self.radius )
.attr("r", self.radius /*180*/);
defs.append("svg:clipPath")
.attr("id", "circle2")
.append("svg:circle")
.attr("cx", self.radius * 550/180 - .5 * self.radius )
.attr("cy", self.radius * 200/180 + .25 * self.radius)
.attr("r", self.radius /*180*/);
defs.append("svg:clipPath")
.attr("id", "circle3")
.append("svg:circle")
.attr("cx", self.radius * 450/180 - .5 * self.radius )
.attr("cy", self.radius * 300/180 + .25 * self.radius)
.attr("r", self.radius /*180*/);
vis.append("svg:rect")
.attr("clip-path", "url(#circle1)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [1,0,0], highlightSubsets ) ? "venn-one-set-area-active" : "venn-one-set-area" ); } );
vis.append("svg:rect")
.attr("clip-path", "url(#circle2)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [0,1,0], highlightSubsets ) ? "venn-one-set-area-active" : "venn-one-set-area" ); } );
vis.append("svg:rect")
.attr("clip-path", "url(#circle3)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [0,0,1], highlightSubsets ) ? "venn-one-set-area-active" : "venn-one-set-area" ); } );
vis.append("svg:g")
.attr("clip-path", "url(#circle1)")
.append("svg:rect")
.attr("clip-path", "url(#circle2)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [1,1,0], highlightSubsets ) ? "venn-two-set-area-active" : "venn-two-set-area" ); } );
vis.append("svg:g")
.attr("clip-path", "url(#circle2)")
.append("svg:rect")
.attr("clip-path", "url(#circle3)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [0,1,1], highlightSubsets ) ? "venn-two-set-area-active" : "venn-two-set-area" ); } );
vis.append("svg:g")
.attr("clip-path", "url(#circle3)")
.append("svg:rect")
.attr("clip-path", "url(#circle1)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [1,0,1], highlightSubsets ) ? "venn-two-set-area-active" : "venn-two-set-area" ); } );
vis.append("svg:g")
.attr("clip-path", "url(#circle3)")
.append("svg:g")
.attr("clip-path", "url(#circle2)")
.append("svg:rect")
.attr("clip-path", "url(#circle1)")
.attr("width", width)
.attr("height", height)
.attr("class", function() { return ( self.isActive( [1,1,1], highlightSubsets ) ? "venn-three-set-area-active" : "venn-three-set-area" ); } );
}