Patterns & animation test 2 by dwtkns

index.html

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

.patterned-stripey { fill: url(#stripey); }
.state-filled-with-a-tiny-pattern-of-texas { fill: url(#tiny-map-of-texas); }

#stripey rect { stroke: none; fill: #eee; }
#stripey path { stroke: #ddd; }

#tiny-map-of-texas rect { stroke: none; fill: none; }
#tiny-map-of-texas path { fill: #f2f; opacity:.2; }

.state-boundary {
  fill: none;
  stroke: #f2f;
  stroke-width:2;
  stroke-linejoin:round;
  opacity:.5;
}

</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 = 500;

var patternSize = 20;

var projection = d3.geo.albersUsa()
    .scale(1000)
    .translate([width / 2, height / 2]);


var tinyprojection = d3.geo.albersUsa().scale(150).translate([patternSize,0])

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

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

var map = svg.append('g'),
    defs = svg.append('defs'),
    stripey  = newPattern('stripey',patternSize,defs),
    tinytexas = newPattern('tiny-map-of-texas',patternSize*2,defs);


stripey.append('rect').attr({
  'x': -patternSize, 
  'y': -patternSize, 
  'height': patternSize*3, 
  'width':  patternSize*3
})
stripey.append('path').attr({
  'd': 'M-10,10 l30,-30 M0,'+patternSize+' l'+patternSize+',-'+patternSize+' M'+(patternSize-10)+','+(patternSize+10)+' l30,-30'
})


d3.json("/mbostock/raw/4090846/us.json", function(error, us) {  
    var texas = topojson.feature(us, us.objects.states).features.filter(function(f){return f.id === 48})[0]
    tinytexas.append('path').datum(texas).attr('id','texas').attr('d',tinypath)
    

  map.selectAll('path')
      .data(topojson.feature(us, us.objects.states).features)
      .enter().append("path")
      .attr('id',function(d) { return d.id})
      .attr("class", 'patterned-stripey')
      .attr("d", path);

  map.selectAll('.state-filled-with-a-tiny-pattern-of-texas')
    .data(topojson.feature(us, us.objects.states).features)
    .enter().append("path")
    .attr('id',function(d) { return d.id})
    .attr("class", 'state-filled-with-a-tiny-pattern-of-texas')
    .attr("d", path);

  map.append("path")
      .datum(topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; }))
      .attr("class", "state-boundary")
      .style('stroke-dasharray','0,1000')
      .attr("d", path)
      
  d3.select('#stripey path').call(pulse,1000)
  d3.select('#stripey').call(patterndrift,5000,100,0)
  
  d3.select('#texas').call(spin,2600,45)
  d3.select('#tiny-map-of-texas').call(patternspin,3000,5)
  
  d3.select('.state-boundary').call(trace,2000)
  
});



function newPattern(name,size,defs) {
  return defs.append('pattern').attr({
    'id': name,
    'patternUnits':'userSpaceOnUse',
    'patternTransform':'rotate(0,0,0)',
    'width': size,
    'height':size
    }).append('g');
}

function pulse(path,duration){
  path.transition()
      .duration(duration)
      .attr('stroke-width',12)
      .transition()
      .attr('stroke-width',2)
      
  setTimeout(function() { pulse(path, duration); }, duration*2);
}

function spin(path,duration,rotation) {

  path.transition().duration(duration)
    .attr('transform','rotate('+rotation+',20,20)')
  
  setTimeout(function() { spin(path, duration, -rotation); }, duration);
}

function trace(path,duration){
  path.transition()
      .duration(duration)
      .style('stroke-dasharray','0,1000')
      .transition()
      .style('stroke-dasharray','300,1000')
      
  setTimeout(function() { trace(path, duration); }, duration*2);
}

function patternspin(pattern,duration,rotation) {
  pattern.transition().duration(duration)
    .attr('patternTransform','rotate('+rotation+','+width/2+','+height/2+')')
  
  setTimeout(function() { patternspin(pattern, duration, -rotation); }, duration);
}

function patterndrift(pattern,duration,driftx,drifty) {
  pattern.transition().duration(duration)
    .attr('patternTransform','translate('+driftx+','+drifty+')')
  
  setTimeout(function() { patterndrift(pattern, duration, -driftx,-drifty); }, duration);
}

</script>