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define(['jquery', 'd3', 'rz_core'],
function($, d3, rz_core) {
function layout__d3_force(graph) {
return d3.layout.force()
.distance(240)
.gravity(0.12)
.charge(-1800)
.linkDistance(function (link, i) {
var d_src = graph.degree(link.__src),
d_dst = graph.degree(link.__dst),
ret = (d_src + d_dst) * 10 + 10;
return ret;
});
}
function layout__cola(graph) {
return cola.d3adaptor()
//.linkDistance(120)
.avoidOverlaps(true);
/*
.linkDistance(function (link, i) {
var d_src = graph.degree(link.__src),
d_dst = graph.degree(link.__dst),
ret = (d_src + d_dst) * 10 + 10;
return ret;
})
*/
}
function layout__empty(graph) {
var donothing = function () { return ret; },
ret = {
resume: donothing,
stop: donothing,
nodes: donothing,
links: donothing,
alpha: donothing,
start: donothing,
size: donothing,
on: donothing,
};
return ret;
}
function layout__sync(layer) {
var layout = {
_nodes: undefined,
_links: undefined,
_tick: function () {
console.log('tick not set');
},
_end: function () {
console.log('end not set');
},
wh: [1, 1] // width + height
},
bound_layer = layer.bind(layout);
layout.resume = function () {
layout.start();
return layout;
};
layout.stop = function () {
return layout;
};
layout.start = function () {
bound_layer();
layout._tick();
layout._end();
return layout;
}
layout.alpha = layout.start;
layout.nodes = function (_nodes) {
layout._nodes = _nodes;
return layout;
}
layout.links = function (_links) {
layout._links = _links;
return layout;
}
layout.on = function (on_type, func) {
switch (on_type) {
case 'tick':
layout._tick = func;
break;
case 'end':
layout._end = func;
break;
};
return layout;
}
layout.size = function (_wh) {
layout.wh = _wh;
return layout;
}
return layout;
}
function layout__concentric() {
var cx = $(document.body).innerWidth() / 2,
cy = $(document.body).innerHeight() / 2;
return layout__sync(function () {
var bytype = _.sortBy(_.groupBy(this._nodes, 'type'), "length"),
types = _.keys(bytype),
i,
r,
nodes,
count,
j,
node,
angle,
ring_radius = Math.max(50, (Math.min.apply(null, this.wh) - 50) / (types.length + 1));
for (i = 0; i < types.length ; ++i) {
r = (i + 1) * ring_radius;
nodes = bytype[types[i]];
count = nodes.length;
for (j = 0 ; j < count; ++j) {
node = nodes[j];
angle = j * Math.PI * 2 / count;
node.x = node.px = cx + r * Math.cos(angle);
node.y = node.py = cy + r * Math.sin(angle);
}
}
});
};
function layout__grid() {
return layout__sync(function () {
var nodes = this._nodes,
count = nodes.length,
line = Math.floor(Math.sqrt(count)) + 1,
rows = Math.ceil(count / line),
wspace = this.wh[0] / (line + 2),
hspace = this.wh[1] / (rows + 1);
for (var i = 0 ; i < nodes.length ; ++i) {
var node = nodes[i];
node.x = node.px = ((i % line) + 1) * wspace;
node.y = node.py = (Math.floor(i / line) + 1) * hspace;
}
});
};
var layouts = [
{
name: 'Force',
create: layout__d3_force,
clazz: 'btn_layout_d3_force'
},
{
name: 'Ring',
create: layout__concentric,
clazz: 'btn_layout_concentric'
},
/*
{
name: 'Grid',
create: layout__grid,
clazz: 'btn_layout_grid'
},
*/
];
return {
layouts: layouts,
empty: layout__empty
};
});
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