greathmaster/.block

## .block
license: gpl-3.0

## .gitignore
build
node_modules

## README.md

      
    Raw
  

              README.md
            
          
    One of the few cases where you want a counterclockwise polygon because the ocean covers greater than one hemisphere. The example demonstrates improved antimeridian stitching in TopoJSON 1.4.1.

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

body {
  background: #fcfcfa;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 960,
    speed = 1e-2,
    start = Date.now();

var sphere = {type: "Sphere"};

var projection = d3.geo.orthographic()
    .scale(width / 2.2)
    .clipAngle(90)
    .translate([width / 2, height / 2])
    .precision(.5);

var graticule = d3.geo.graticule();

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

var context = canvas.node().getContext("2d");

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

d3.json("topo.json", function(error, topo) {
  if (error) throw error;

  var ocean = topojson.feature(topo, topo.objects.ocean),
      grid = graticule();

  d3.timer(function() {
    projection.rotate([speed * (Date.now() - start), -15]);

    context.clearRect(0, 0, width, height);

    context.beginPath();
    path(sphere);
    context.fillStyle = "#fff";
    context.fill();

    context.beginPath();
    path(grid);
    context.lineWidth = .5;
    context.strokeStyle = "#ddd";
    context.stroke();

    context.beginPath();
    path(ocean);
    context.fillStyle = "rgba(70,130,180,.5)";
    context.fill();

    context.beginPath();
    path(sphere);
    context.lineWidth = 1.5;
    context.strokeStyle = "#000";
    context.stroke();
  });
});

d3.select(self.frameElement).style("height", height + "px");

</script>

## Makefile
all: topo.json

build/ne_%_ocean.zip:
	mkdir -p build
	curl -o $@ --raw 'http://www.nacis.org/naturalearth/$*/physical/ne_$*_ocean.zip'

build/ne_%.shp: build/ne_%.zip
	unzip -d build $<
	touch $@

topo.json: build/ne_110m_ocean.shp
	node_modules/.bin/topojson \
		--no-force-clockwise \
		-q 1e5 \
		-- \
		ocean=build/ne_110m_ocean.shp \
		> $@

## package.json
{
  "name": "anonymous",
  "version": "0.0.1",
  "private": true,
  "devDependencies": {
    "topojson": "1"
  }
}

## thumbnail.png

      
    Raw
  

              thumbnail.png
            
          
## topo.json

      
Display the source blob

    
Display the rendered blob

    
    Raw
  

              topo.json
            
          
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	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	body {
	background: #fcfcfa;
	}

	</style>
	<body>
	<script src="//d3js.org/d3.v3.min.js"></script>
	<script src="//d3js.org/topojson.v1.min.js"></script>
	<script>

	var width = 960,
	height = 960,
	speed = 1e-2,
	start = Date.now();

	var sphere = {type: "Sphere"};

	var projection = d3.geo.orthographic()
	.scale(width / 2.2)
	.clipAngle(90)
	.translate([width / 2, height / 2])
	.precision(.5);

	var graticule = d3.geo.graticule();

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

	var context = canvas.node().getContext("2d");

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

	d3.json("topo.json", function(error, topo) {
	if (error) throw error;

	var ocean = topojson.feature(topo, topo.objects.ocean),
	grid = graticule();

	d3.timer(function() {
	projection.rotate([speed * (Date.now() - start), -15]);

	context.clearRect(0, 0, width, height);

	context.beginPath();
	path(sphere);
	context.fillStyle = "#fff";
	context.fill();

	context.beginPath();
	path(grid);
	context.lineWidth = .5;
	context.strokeStyle = "#ddd";
	context.stroke();

	context.beginPath();
	path(ocean);
	context.fillStyle = "rgba(70,130,180,.5)";
	context.fill();

	context.beginPath();
	path(sphere);
	context.lineWidth = 1.5;
	context.strokeStyle = "#000";
	context.stroke();
	});
	});

	d3.select(self.frameElement).style("height", height + "px");

	</script>
	all: topo.json

	build/ne_%_ocean.zip:
	mkdir -p build
	curl -o $@ --raw 'http://www.nacis.org/naturalearth/$/physical/ne_$_ocean.zip'

	build/ne_%.shp: build/ne_%.zip
	unzip -d build $<
	touch $@

	topo.json: build/ne_110m_ocean.shp
	node_modules/.bin/topojson \
	--no-force-clockwise \
	-q 1e5 \
	-- \
	ocean=build/ne_110m_ocean.shp \
	> $@
	{
	"name": "anonymous",
	"version": "0.0.1",
	"private": true,
	"devDependencies": {
	"topojson": "1"
	}
	}