jstcki/README.md

## README.md

      
    Raw
  

              README.md
            
          
    Grid layout demo.

  
## d3-grid.js
(function() {
  d3.layout.grid = function() {
    var mode = "equal",
        layout = _distributeEqually,
        x = d3.scale.ordinal(),
        y = d3.scale.ordinal(),
        size = [1, 1],
        actualSize = [0, 0],
        nodeSize = false,
        bands = false,
        padding = [0, 0],
        cols, rows;

    function grid(nodes) {
      return layout(nodes);
    }

    function _distributeEqually(nodes) {
      var i = -1,
          n = nodes.length,
          _cols = cols ? cols : 0,
          _rows = rows ? rows : 0,
          col, row;

      if (_rows && !_cols) {
        _cols = Math.ceil(n / _rows)
      } else {
        _cols || (_cols = Math.ceil(Math.sqrt(n)));
        _rows || (_rows = Math.ceil(n / _cols));
      }

      if (nodeSize) {
        x.domain(d3.range(_cols)).range(d3.range(0, (size[0] + padding[0]) * _cols, size[0] + padding[0]));
        y.domain(d3.range(_rows)).range(d3.range(0, (size[1] + padding[1]) * _rows, size[1] + padding[1]));
        actualSize[0] = bands ? x(_cols - 1) + size[0] : x(_cols - 1);
        actualSize[1] = bands ? y(_rows - 1) + size[1] : y(_rows - 1);
      } else if (bands) {
        x.domain(d3.range(_cols)).rangeBands([0, size[0]], padding[0], 0);
        y.domain(d3.range(_rows)).rangeBands([0, size[1]], padding[1], 0);
        actualSize[0] = x.rangeBand();
        actualSize[1] = y.rangeBand();
      } else {
        x.domain(d3.range(_cols)).rangePoints([0, size[0]]);
        y.domain(d3.range(_rows)).rangePoints([0, size[1]]);
        actualSize[0] = x(1);
        actualSize[1] = y(1);
      }

      while (++i < n) {
        col = i % _cols;
        row = Math.floor(i / _cols);
        nodes[i].x = x(col);
        nodes[i].y = y(row);
      }

      return nodes;
    }

    grid.size = function(value) {
      if (!arguments.length) return nodeSize ? actualSize : size;
      actualSize = [0, 0];
      nodeSize = (size = value) == null;
      return grid;
    }

    grid.nodeSize = function(value) {
      if (!arguments.length) return nodeSize ? size : actualSize;
      actualSize = [0, 0];
      nodeSize = (size = value) != null;
      return grid;
    }

    grid.rows = function(value) {
      if (!arguments.length) return rows;
      rows = value;
      return grid;
    }

    grid.cols = function(value) {
      if (!arguments.length) return cols;
      cols = value;
      return grid;
    }

    grid.bands = function() {
      bands = true;
      return grid;
    }

    grid.points = function() {
      bands = false;
      return grid;
    }

    grid.padding = function(value) {
      if (!arguments.length) return padding;
      padding = value;
      return grid;
    }

    return grid;
  };
})();

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
  font-family: Helvetica;
  font-size: 10px;
}
.point, .rect {
  fill: #222;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="d3-grid.js"></script>
<script>

var points = [];
var rects = [];

var width = 960,
    height = 500;

var pointGrid = d3.layout.grid()
  .points()
  .size([360, 360]);

var rectGrid = d3.layout.grid()
  .bands()
  .size([360, 360])
  .padding([0.1, 0.1]);

var svg = d3.select("body").append("svg")
  .attr({
    width: width,
    height: height
  })
.append("g")
  .attr("transform", "translate(70,70)");

var tick = setInterval(push, 500);

function update() {
  var point = svg.selectAll(".point")
    .data(pointGrid(points));
  point.enter().append("circle")
    .attr("class", "point")
    .attr("r", 1e-6)
    .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  point.transition()
    .attr("r", 5)
    .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  point.exit().transition()
    .attr("r", 1e-6)
    .remove();

  var rect = svg.selectAll(".rect")
    .data(rectGrid(rects));
  rect.enter().append("rect")
    .attr("class", "rect")
    .attr("width", rectGrid.nodeSize()[0])
    .attr("height", rectGrid.nodeSize()[1])
    .attr("transform", function(d) { return "translate(" + (d.x + 460)+ "," + d.y + ")"; })
    .style("opacity", 1e-6);
  rect.transition()
    .attr("width", rectGrid.nodeSize()[0])
    .attr("height", rectGrid.nodeSize()[1])
    .attr("transform", function(d) { return "translate(" + (d.x + 460)+ "," + d.y + ")"; })
    .style("opacity", 1);
  rect.exit().transition()
    .style("opacity", 1e-6)
    .remove();
}

function push() {
  points.push({});
  rects.push({});
  update();
  if (points.length > 15) {
    clearInterval(tick);
    tick = setInterval(pop, 500);
  }
}

function pop() {
  points.pop();
  rects.pop();
  update();
  if (points.length < 2) {
    clearInterval(tick);
    tick = setInterval(push, 500);
  }
}
</script>

## thumbnail.png

      
    Raw
  

              thumbnail.png
	(function() {
	d3.layout.grid = function() {
	var mode = "equal",
	layout = _distributeEqually,
	x = d3.scale.ordinal(),
	y = d3.scale.ordinal(),
	size = [1, 1],
	actualSize = [0, 0],
	nodeSize = false,
	bands = false,
	padding = [0, 0],
	cols, rows;

	function grid(nodes) {
	return layout(nodes);
	}

	function _distributeEqually(nodes) {
	var i = -1,
	n = nodes.length,
	_cols = cols ? cols : 0,
	_rows = rows ? rows : 0,
	col, row;

	if (_rows && !_cols) {
	_cols = Math.ceil(n / _rows)
	} else {
	_cols \|\| (_cols = Math.ceil(Math.sqrt(n)));
	_rows \|\| (_rows = Math.ceil(n / _cols));
	}

	if (nodeSize) {
	x.domain(d3.range(_cols)).range(d3.range(0, (size[0] + padding[0]) * _cols, size[0] + padding[0]));
	y.domain(d3.range(_rows)).range(d3.range(0, (size[1] + padding[1]) * _rows, size[1] + padding[1]));
	actualSize[0] = bands ? x(_cols - 1) + size[0] : x(_cols - 1);
	actualSize[1] = bands ? y(_rows - 1) + size[1] : y(_rows - 1);
	} else if (bands) {
	x.domain(d3.range(_cols)).rangeBands([0, size[0]], padding[0], 0);
	y.domain(d3.range(_rows)).rangeBands([0, size[1]], padding[1], 0);
	actualSize[0] = x.rangeBand();
	actualSize[1] = y.rangeBand();
	} else {
	x.domain(d3.range(_cols)).rangePoints([0, size[0]]);
	y.domain(d3.range(_rows)).rangePoints([0, size[1]]);
	actualSize[0] = x(1);
	actualSize[1] = y(1);
	}

	while (++i < n) {
	col = i % _cols;
	row = Math.floor(i / _cols);
	nodes[i].x = x(col);
	nodes[i].y = y(row);
	}

	return nodes;
	}

	grid.size = function(value) {
	if (!arguments.length) return nodeSize ? actualSize : size;
	actualSize = [0, 0];
	nodeSize = (size = value) == null;
	return grid;
	}

	grid.nodeSize = function(value) {
	if (!arguments.length) return nodeSize ? size : actualSize;
	actualSize = [0, 0];
	nodeSize = (size = value) != null;
	return grid;
	}

	grid.rows = function(value) {
	if (!arguments.length) return rows;
	rows = value;
	return grid;
	}

	grid.cols = function(value) {
	if (!arguments.length) return cols;
	cols = value;
	return grid;
	}

	grid.bands = function() {
	bands = true;
	return grid;
	}

	grid.points = function() {
	bands = false;
	return grid;
	}

	grid.padding = function(value) {
	if (!arguments.length) return padding;
	padding = value;
	return grid;
	}

	return grid;
	};
	})();
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>
	body {
	font-family: Helvetica;
	font-size: 10px;
	}
	.point, .rect {
	fill: #222;
	}
	</style>
	<body>
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<script src="d3-grid.js"></script>
	<script>

	var points = [];
	var rects = [];

	var width = 960,
	height = 500;

	var pointGrid = d3.layout.grid()
	.points()
	.size([360, 360]);

	var rectGrid = d3.layout.grid()
	.bands()
	.size([360, 360])
	.padding([0.1, 0.1]);

	var svg = d3.select("body").append("svg")
	.attr({
	width: width,
	height: height
	})
	.append("g")
	.attr("transform", "translate(70,70)");

	var tick = setInterval(push, 500);

	function update() {
	var point = svg.selectAll(".point")
	.data(pointGrid(points));
	point.enter().append("circle")
	.attr("class", "point")
	.attr("r", 1e-6)
	.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
	point.transition()
	.attr("r", 5)
	.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
	point.exit().transition()
	.attr("r", 1e-6)
	.remove();

	var rect = svg.selectAll(".rect")
	.data(rectGrid(rects));
	rect.enter().append("rect")
	.attr("class", "rect")
	.attr("width", rectGrid.nodeSize()[0])
	.attr("height", rectGrid.nodeSize()[1])
	.attr("transform", function(d) { return "translate(" + (d.x + 460)+ "," + d.y + ")"; })
	.style("opacity", 1e-6);
	rect.transition()
	.attr("width", rectGrid.nodeSize()[0])
	.attr("height", rectGrid.nodeSize()[1])
	.attr("transform", function(d) { return "translate(" + (d.x + 460)+ "," + d.y + ")"; })
	.style("opacity", 1);
	rect.exit().transition()
	.style("opacity", 1e-6)
	.remove();
	}

	function push() {
	points.push({});
	rects.push({});
	update();
	if (points.length > 15) {
	clearInterval(tick);
	tick = setInterval(pop, 500);
	}
	}

	function pop() {
	points.pop();
	rects.pop();
	update();
	if (points.length < 2) {
	clearInterval(tick);
	tick = setInterval(push, 500);
	}
	}
	</script>