thayashi/.block

## .block
license: gpl-3.0

## README.md

      
    Raw
  

              README.md
            
          
    The above grid demonstrates an orthographic azimuthal projection. The lines are at uniform 10º increments of latitude and longitude.
Part 2 of 3.

Orthographic Grid
Orthographic Clipping
Orthographic Shading

To see this technique applied to real geographic features, see the Spinny Globe example.
forked from mbostock's block: Orthographic Clipping
forked from thayashi's block: Orthographic Clipping
forked from thayashi's block: Orthographic Clipping 2
forked from thayashi's block: Orthographic Clipping 2

  
## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

circle,
path {
  fill: none;
  stroke: #666;
}

circle {
  stroke-width: 2px;
}

.land {
  fill: #f33;
  opacity: 0.8;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var width = 960,
    height = 500;

var rotate = [-71.03, 702.37],
    velocity = [.018, .006];

var projection = d3.geo.orthographic()
    .scale(240)
    .clipAngle(90);

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

var graticule = d3.geo.graticule();

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

var feature = svg.append("path")
    .datum(graticule);

svg.append("circle")
    .attr("cx", width / 2)
    .attr("cy", height / 2)
    .attr("r", 240);


var url = "http://enjalot.github.io/wwsd/data/world/world-110m.geojson";
d3.json(url, function(err, geojson) {
  var _geojson = geojson;
  var _map = svg.append("path")
   .attr("d", path(geojson));
  d3.timer(function(elapsed) {
    projection.rotate([rotate[0] + elapsed * velocity[0], rotate[1] + elapsed * velocity[1]]);
    feature.attr("d", path);
    _map.attr("d", path(_geojson))
        .attr("class", "land");

  });
});


</script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	circle,
	path {
	fill: none;
	stroke: #666;
	}

	circle {
	stroke-width: 2px;
	}

	.land {
	fill: #f33;
	opacity: 0.8;
	}

	</style>
	<body>
	<script src="//d3js.org/d3.v3.min.js"></script>
	<script>

	var width = 960,
	height = 500;

	var rotate = [-71.03, 702.37],
	velocity = [.018, .006];

	var projection = d3.geo.orthographic()
	.scale(240)
	.clipAngle(90);

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

	var graticule = d3.geo.graticule();

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

	var feature = svg.append("path")
	.datum(graticule);

	svg.append("circle")
	.attr("cx", width / 2)
	.attr("cy", height / 2)
	.attr("r", 240);


	var url = "http://enjalot.github.io/wwsd/data/world/world-110m.geojson";
	d3.json(url, function(err, geojson) {
	var _geojson = geojson;
	var _map = svg.append("path")
	.attr("d", path(geojson));
	d3.timer(function(elapsed) {
	projection.rotate([rotate[0] + elapsed * velocity[0], rotate[1] + elapsed * velocity[1]]);
	feature.attr("d", path);
	_map.attr("d", path(_geojson))
	.attr("class", "land");

	});
	});



	</script>