now start with no vertices, add vertices when clicking. Some print bug I think due to the fact that the pointer is "on" a vertice after clicking.
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Interactive Voronoi + add point
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| path { | |
| fill: yellow; | |
| stroke: #000; | |
| } | |
| circle { | |
| fill: #fff; | |
| stroke: #000; | |
| pointer-events: none; | |
| } | |
| .PiYG .q0-9{fill:rgb(197,27,125)} | |
| .PiYG .q1-9{fill:rgb(222,119,174)} | |
| .PiYG .q2-9{fill:rgb(241,182,218)} | |
| .PiYG .q3-9{fill:rgb(253,224,239)} | |
| .PiYG .q4-9{fill:rgb(247,247,247)} | |
| .PiYG .q5-9{fill:rgb(230,245,208)} | |
| .PiYG .q6-9{fill:rgb(184,225,134)} | |
| .PiYG .q7-9{fill:rgb(127,188,65)} | |
| .PiYG .q8-9{fill:rgb(77,146,33)} | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var vertices=d3.range(2).map(function(d) { | |
| return [Math.random() * width, Math.random() * height]; | |
| }); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .attr("class", "PiYG") | |
| .on("mousemove", update); | |
| svg.selectAll("path") | |
| .data(d3.geom.voronoi(vertices)) | |
| .enter().append("path") | |
| .attr("class", function(d, i) { return i ? "q" + (i % 9) + "-9" : null; }) | |
| .attr("d", function(d) { return "M" + d.join("L") + "Z"; }); | |
| svg.selectAll("circle") | |
| .data(vertices.slice(1)) | |
| .enter().append("circle") | |
| .attr("transform", function(d) { return "translate(" + d + ")"; }) | |
| .attr("r", 2); | |
| function add() { | |
| vertices.push(d3.mouse(this)); | |
| svg.selectAll("path") | |
| .data(d3.geom.voronoi(vertices)) | |
| .enter().append("path") | |
| .attr("class", function(d, i) { return i ? "q" + (i % 9) + "-9" : null; }) | |
| .attr("d", function(d) { return "M" + d.join("L") + "Z"; }); | |
| svg.selectAll("circle") | |
| .data(vertices.slice(1)) | |
| .enter().append("circle") | |
| .attr("transform", function(d) { return "translate(" + d + ")"; }) | |
| .attr("r", 2); | |
| } | |
| function update() { | |
| var pointer = d3.mouse(this); | |
| for (var i = 0;i<vertices.length; i++) { | |
| if (vertices[i][0] == pointer[0] && vertices[i][1] == pointer[1]) { | |
| console.log('same pos'); | |
| return; | |
| } | |
| } | |
| vertices[0] = pointer; | |
| svg.selectAll("path") | |
| .data(d3.geom.voronoi(vertices) | |
| .map(function(d) { return "M" + d.join("L") + "Z"; })) | |
| .filter(function(d) { return this.getAttribute("d") != d; }) | |
| .attr("d", function(d) { return d; }); | |
| } | |
| </script> |
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