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Venn Diagram with Clipping
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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: #333; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var defs = svg.append("defs"); | |
| defs.append("clipPath") | |
| .attr("id", "circle1") | |
| .append("circle") | |
| .attr("cx", 350) | |
| .attr("cy", 200) | |
| .attr("r", 180); | |
| defs.append("clipPath") | |
| .attr("id", "circle2") | |
| .append("circle") | |
| .attr("cx", 550) | |
| .attr("cy", 200) | |
| .attr("r", 180); | |
| defs.append("clipPath") | |
| .attr("id", "circle3") | |
| .append("circle") | |
| .attr("cx", 450) | |
| .attr("cy", 300) | |
| .attr("r", 180); | |
| svg.append("rect") | |
| .attr("clip-path", "url(#circle1)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#ff0000"); | |
| svg.append("rect") | |
| .attr("clip-path", "url(#circle2)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#00ff00"); | |
| svg.append("rect") | |
| .attr("clip-path", "url(#circle3)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#0000ff"); | |
| svg.append("g") | |
| .attr("clip-path", "url(#circle1)") | |
| .append("rect") | |
| .attr("clip-path", "url(#circle2)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#ffff00"); | |
| svg.append("g") | |
| .attr("clip-path", "url(#circle2)") | |
| .append("rect") | |
| .attr("clip-path", "url(#circle3)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#00ffff"); | |
| svg.append("g") | |
| .attr("clip-path", "url(#circle3)") | |
| .append("rect") | |
| .attr("clip-path", "url(#circle1)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#ff00ff"); | |
| svg.append("g") | |
| .attr("clip-path", "url(#circle3)") | |
| .append("g") | |
| .attr("clip-path", "url(#circle2)") | |
| .append("rect") | |
| .attr("clip-path", "url(#circle1)") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .style("fill", "#ffffff"); | |
| </script> |
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Hi mbostock,
I am just starting to play around with SVG and have found D3.js very useful and enjoy learning from the examples you provide. I would like to add the ability to highlight the different sections of a venn diagram with an outline around the section's perimeter when the mouse hovers over it. To do this, I would think I need to create the 7 disjoint areas of a venn diagram. For example, A and B and not C would be the intersection of circle A and Circle B and the complement of Circle C. How would I create such a shape? I have been trying to use a mask for the complement of C but haven't found many examples of using mask within D3.js. Thanks for any help and for the great library.
Justin
Edit: Looks like Elliptical Arcs are the way to go to get the behavior I am looking for.