circle overlaps intersection clipping

forked from romsson's block: detect olverapped SVG elements intersections

forked from romsson's block: clippath olverapped SVG circles intersections

forked from romsson's block: circle overlaps intersection clipping

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
   
		var color0 = d3.scaleLinear()
        .domain([0, 1])
        .range(['white', 'red'])
    
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
    
    svg
      .append("circle")
      .attr("cy", 150)
      .attr("cx", 150)
      .attr("r", 150)
    	.style("fill", "none")
    	.style("stroke", "black")
 //   	.style("fill", "red")
    	.style("opacity", .1);

svg.append("clipPath")
			.attr("id", "circle-clip-1-1")
      .append("circle")
      .attr("cy", 150)
      .attr("cx", 150)
      .attr("r", 150)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    svg
      .append("circle")
      .attr("cy", 150)
      .attr("cx", 150)
      .attr("r", 130)
    	.style("stroke", "black")
      .style("fill", "none")
    	.style("opacity", .1);
    
    svg.append("clipPath")
			.attr("id", "circle-clip-1-2")
      .append("circle")
      .attr("cy", 150)
      .attr("cx", 150)
       .attr("r", 130)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    
    svg
      .append("circle")
      .attr("cy", 150)
      .attr("cx", 150)
      .attr("r", 110)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    svg.append("clipPath")
			.attr("id", "circle-clip-1-3")
      .append("circle")
      .attr("cy", 150)
      .attr("cx", 150)
      .attr("r", 110)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    // circle 2
    svg
      .append("circle")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 150)
    	.style("stroke", "black")
    	.style("fill", "none")
    	.style("opacity", .1);
   
    svg.append("clipPath")
			.attr("id", "circle-clip-2-1")
      .append("circle")
    	.attr("clip-path","url(#circle-clip-1-1)")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 150)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    svg
      .append("circle")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 130)
    	.style("stroke", "black")
    	.style("fill", "none")
    	.style("opacity", .1);

svg.append("clipPath")
			.attr("id", "circle-clip-2-2")
      .append("circle")
    	.attr("clip-path","url(#circle-clip-1-2)")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 130)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    svg
      .append("circle")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 110)
    	.style("fill", "red")
    	.style("opacity", .1);
    
    // circle 3
    //svg.append("circle")
    //  .attr("cy", 200)
    //  .attr("cx", 350)
    //  .attr("r", 150)
    //	.style("fill", "green")
    //	.style("opacity", 1);

svg.append("circle")
    	.attr("clip-path","url(#circle-clip-2-1)")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 150)
    	.style("fill", "red")
    	.style("opacity", 1);
    
    svg.append("circle")
    	.attr("clip-path","url(#circle-clip-2-2)")
      .attr("cy", 300)
      .attr("cx", 250)
      .attr("r", 150)
    	.style("fill", "red")
    	.style("opacity", 1);
  </script>
</body>

https://d3js.org/d3.v4.min.js