warrickcustomhomes/README.md

## README.md

      
    Raw
  

              README.md
            
          
    Part of a series of examples. See:

mousewheel-zoom + click-to-center via projection
click-to-center via projection
click-to-center via transform
click-to-zoom via transform


## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<script src="http://mbostock.github.com/d3/d3.v2.js?2.8.1"></script>
<style>

.background {
  fill: none;
  pointer-events: all;
}

.hide {
  visibility: hidden;
}

#states path {
  fill: #aaa;
  stroke: #fff;
  stroke-width: 1.5px;
}

#states path:hover {
  stroke: white;
}

</style>
<body>
<script>

var width = 960,
    height = 500;

var projection = d3.geo.albersUsa()
    .scale(width)
    .translate([width / 2, height / 2]);

var path = d3.geo.path()
    .projection(projection);

var zoom = d3.behavior.zoom()
    .translate(projection.translate())
    .scale(projection.scale())
    .scaleExtent([height, 8 * height])
    .on("zoom", zoom);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var states = svg.append("g")
    .attr("id", "states")
    .call(zoom);

states.append("rect")
    .attr("class", "background")
    .attr("width", width)
    .attr("height", height);

d3.json("us-states.json", function(json) {
  states.selectAll("path")
      .data(json.features)
    .enter().append("path")
      .attr("d", path)
      .on("click", click);
});

loc = projection([-106.6091944,35.04022222]);
var box = svg.append("svg:rect").attr("x", loc[0]).attr("y", loc[1]).attr("width", 5).attr("height", 10).classed("hide", projection.scale() < 1000);

function click(d) {
  var centroid = path.centroid(d),
      translate = projection.translate();

  projection.translate([
    translate[0] - centroid[0] + width / 2,
    translate[1] - centroid[1] + height / 2
  ]);

  zoom.translate(projection.translate());

  states.selectAll("path").transition()
      .duration(1000)
      .attr("d", path);

  loc = projection([-106.6091944,35.04022222]);
  box.transition().duration(1000).attr("x", loc[0]).attr("y", loc[1]).attr("width", 5).attr("height", 10).classed("hide", projection.scale() < 1000);
}

function zoom() {
  projection.translate(d3.event.translate).scale(d3.event.scale);
  states.selectAll("path").attr("d", path);
  loc = projection([-106.6091944,35.04022222]);
  box.attr("x", loc[0]).attr("y", loc[1]).attr("width", 5).attr("height", 10).classed("hide", projection.scale() < 1000);
}

</script>

## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## us-states.json

      
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              us-states.json
            
          
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	<!DOCTYPE html>
	<meta charset="utf-8">
	<script src="http://mbostock.github.com/d3/d3.v2.js?2.8.1"></script>
	<style>

	.background {
	fill: none;
	pointer-events: all;
	}

	.hide {
	visibility: hidden;
	}

	#states path {
	fill: #aaa;
	stroke: #fff;
	stroke-width: 1.5px;
	}

	#states path:hover {
	stroke: white;
	}

	</style>
	<body>
	<script>

	var width = 960,
	height = 500;

	var projection = d3.geo.albersUsa()
	.scale(width)
	.translate([width / 2, height / 2]);

	var path = d3.geo.path()
	.projection(projection);

	var zoom = d3.behavior.zoom()
	.translate(projection.translate())
	.scale(projection.scale())
	.scaleExtent([height, 8 * height])
	.on("zoom", zoom);

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	var states = svg.append("g")
	.attr("id", "states")
	.call(zoom);

	states.append("rect")
	.attr("class", "background")
	.attr("width", width)
	.attr("height", height);

	d3.json("us-states.json", function(json) {
	states.selectAll("path")
	.data(json.features)
	.enter().append("path")
	.attr("d", path)
	.on("click", click);
	});

	loc = projection([-106.6091944,35.04022222]);
	var box = svg.append("svg:rect").attr("x", loc[0]).attr("y", loc[1]).attr("width", 5).attr("height", 10).classed("hide", projection.scale() < 1000);

	function click(d) {
	var centroid = path.centroid(d),
	translate = projection.translate();

	projection.translate([
	translate[0] - centroid[0] + width / 2,
	translate[1] - centroid[1] + height / 2
	]);

	zoom.translate(projection.translate());

	states.selectAll("path").transition()
	.duration(1000)
	.attr("d", path);

	loc = projection([-106.6091944,35.04022222]);
	box.transition().duration(1000).attr("x", loc[0]).attr("y", loc[1]).attr("width", 5).attr("height", 10).classed("hide", projection.scale() < 1000);
	}

	function zoom() {
	projection.translate(d3.event.translate).scale(d3.event.scale);
	states.selectAll("path").attr("d", path);
	loc = projection([-106.6091944,35.04022222]);
	box.attr("x", loc[0]).attr("y", loc[1]).attr("width", 5).attr("height", 10).classed("hide", projection.scale() < 1000);
	}

	</script>