D3 Examples - Raindrops Example

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<!DOCTYPE html>
<meta charset="utf-8">
<title>Raindrops</title>
<style>
​
body {
  background: #012;
}
​
path {
  stroke: #fff;
  stroke-opacity: .5;
}
​
</style>
<body>
<link href="https://rawgithub.com/VisDockHub/NewVisDock/master/master/visdock.css" rel="stylesheet" type="text/css"/>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script src="https://rawgithub.com/visdockhub/newvisdock/master/master/visdock.js"></script>
<script src="https://rawgithub.com/visdockhub/newvisdock/master/master/2d.js"></script>
<script src="https://rawgithub.com/visdockhub/newvisdock/master/master/intersectionutilities.js"></script>
<script src="https://rawgithub.com/visdockhub/newvisdock/master/master/visdock.utils.js"></script>
<script>
​
var width = 960,
    height = 500;
​
VisDock.init("body", {width: 960, height: 700});
var viewport = VisDock.getViewport();
var svg = viewport;
Panel.x = width / 2;
Panel.y = height / 2;
Panel.setTransform();
​
/*var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
*/
​
var gradient = svg.append("defs").append("linearGradient")
    .attr("id", "gradient")
    .attr("x1", "0%")
    .attr("y1", "20%")
    .attr("x2", "20%")
    .attr("y2", "100%");
​
gradient.append("stop")
    .attr("offset", "20%")
    .attr("stop-color", "#ccf");
​
gradient.append("stop")
    .attr("offset", "50%")
    .attr("stop-color", "#1C425C");
​
gradient.append("stop")
    .attr("offset", "100%")
    .attr("stop-color", "#19162B");
​
// could use transparent gradient overlay to vary raindrop color
svg.selectAll("path")
    .data(d3.range(358))
  .enter().append("path")
    .attr("fill", "url(#gradient)")
    .attr("d", function() { return raindrop(10 + Math.random() * 200); })
    .attr("transform", function(d) {
      return "rotate(" + d + ")"
          + "translate(" + (height / 4 + Math.random() * height / 6) + ",0)"
          + "rotate(90)";
    });
​
// size is linearly proportional to square pixels (not exact, yet)
function raindrop(size) {
  var r = Math.sqrt(size / Math.PI);
  return "M" + r + ",0"
      + "A" + r + "," + r + " 0 1,1 " + -r + ",0"
      + "C" + -r + "," + -r + " 0," + -r + " 0," + -3*r
      + "C0," + -r + " " + r + "," + -r + " " + r + ",0"
      + "Z";
}
​
VisDock.eventHandler = {
    getHitsPolygon : function(points, inclusive) {
        var shapebound = new createPolygon(points);
        return shapebound.intersectPath(d3.selectAll("path")[0], inclusive)
    },
    getHitsLine : function(points, inclusive) {
        var shapebound = new createLine(points);
        return shapebound.intersectPath(d3.selectAll("path")[0], inclusive)
    },
    getHitsEllipse : function(points, inclusive) {
        var shapebound = new createEllipse(points);
        return shapebound.intersectPath(d3.selectAll("path")[0], inclusive)
    },
    setColor : function(hits) {
        QueryManager.layers[num - 1] = [];
        for (var i = 0; i < hits.length; i++) {
            var str = hits[i].getAttributeNS(null, "transform");
            var d = hits[i].getAttributeNS(null, "d")
            QueryManager.layers[num - 1][i] = d3.select(hits[i].parentNode).append("path").attr("transform", str)
                .attr("d", d)
                .attr("style", "fill: " + VisDock.color[num - 1] + "; opacity: 0.5; pointer-events: none")
        }
    },
    changeColor : function(color, query, index) {
        var vis = VisDock.utils.getQueryVisibility(index);
        for (var i = 0; i < query.length; i++) {
            query[i][0][0].setAttributeNS(null, "style", "fill: " + color + "; opacity: " + vis)
        }
    },
    changeVisibility : function(vis, query, index) {
        var color = VisDock.utils.getQueryColor(index);
        for (var i = 0; i < query.length; i++) {
            query[i][0][0].setAttributeNS(null, "style", "fill: " + color + "; opacity: " + vis)
        }
    },
    removeColor : function(hits, index) {
        for (var i = 0; i < hits.length; i++) {
            hits[i].remove();
        }
    },
    QueryClick : function(query, index) {
​
    }
}   
BirdView.init(viewport, 960, 700)
d3.select(self.frameElement).style("width", "960px")
d3.select(self.frameElement).style("height", "700px")
</script>
    