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Merged
TornjV merged 1 commit into from
May 30, 2016
Merged

Add coordinate system tracer #118

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156 changes: 156 additions & 0 deletions js/module/coordinate_system.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,156 @@
const {
DirectedGraph,
DirectedGraphTracer
} = require('./directed_graph');

function CoordinateSystemTracer() {
if (DirectedGraphTracer.apply(this, arguments)) {
CoordinateSystemTracer.prototype.init.call(this);
return true;
}
return false;
}

CoordinateSystemTracer.prototype = $.extend(true, Object.create(DirectedGraphTracer.prototype), {
constructor: CoordinateSystemTracer,
init: function () {
var tracer = this;

this.s.settings({
defaultEdgeType: 'def',
funcEdgesDef: function (edge, source, target, context, settings) {
var color = tracer.getColor(edge, source, target, settings);
tracer.drawEdge(edge, source, target, color, context, settings);
}
});
},
setData: function (C) {
if (Tracer.prototype.setData.apply(this, arguments)) return true;

this.graph.clear();
var nodes = [];
var edges = [];
for (var i = 0; i < C.length; i++)
nodes.push({
id: this.n(i),
x: C[i][0],
y: C[i][1],
label: '' + i ,
size: 1,
color: this.color.default
});
this.graph.read({
nodes: nodes,
edges: edges
});
this.s.camera.goTo({
x: 0,
y: 0,
angle: 0,
ratio: 1
});
this.refresh();

return false;
},
processStep: function(step, options) {
switch (step.type) {
case 'visit':
case 'leave':
var visit = step.type == 'visit';
var targetNode = this.graph.nodes(this.n(step.target));
var color = visit ? this.color.visited : this.color.left;
targetNode.color = color;
if (step.source !== undefined) {
var edgeId = this.e(step.source, step.target);
if (this.graph.edges(edgeId)) {
var edge = this.graph.edges(edgeId);
edge.color = color;
this.graph.dropEdge(edgeId).addEdge(edge);
} else {
this.graph.addEdge({
id: this.e(step.target, step.source),
source: this.n(step.source),
target: this.n(step.target),
color: color,
size: 1
});
}
}
if (this.logTracer) {
var source = step.source;
if (source === undefined) source = '';
this.logTracer.print(visit ? source + ' -> ' + step.target : source + ' <- ' + step.target);
}
break;
default:
Tracer.prototype.processStep.call(this, step, options);
}
},
e: function(v1, v2) {
if (v1 > v2) {
var temp = v1;
v1 = v2;
v2 = temp;
}
return 'e' + v1 + '_' + v2;
},
drawOnHover: function(node, context, settings, next) {
var tracer = this;

context.setLineDash([5, 5]);
var nodeIdx = node.id.substring(1);
this.graph.edges().forEach(function(edge) {
var ends = edge.id.substring(1).split("_");
if (ends[0] == nodeIdx) {
var color = '#0ff';
var source = node;
var target = tracer.graph.nodes('n' + ends[1]);
tracer.drawEdge(edge, source, target, color, context, settings);
if (next) next(edge, source, target, color, context, settings);
} else if (ends[1] == nodeIdx) {
var color = '#0ff';
var source = tracer.graph.nodes('n' + ends[0]);
var target = node;
tracer.drawEdge(edge, source, target, color, context, settings);
if (next) next(edge, source, target, color, context, settings);
}
});
},
drawEdge: function(edge, source, target, color, context, settings) {
var prefix = settings('prefix') || '',
size = edge[prefix + 'size'] || 1;

context.strokeStyle = color;
context.lineWidth = size;
context.beginPath();
context.moveTo(
source[prefix + 'x'],
source[prefix + 'y']
);
context.lineTo(
target[prefix + 'x'],
target[prefix + 'y']
);
context.stroke();
}
});

var CoordinateSystem = {
random: function (N, min, max) {
if (!N) N = 7;
if (!min) min = 1;
if (!max) max = 10;
var C = new Array(N);
for (var i = 0; i < N; i++) C[i] = new Array(2);
for (var i = 0; i < N; i++)
for (var j = 0; j < C[i].length; j++)
C[i][j] = (Math.random() * (max - min + 1) | 0) + min;
return C;
}
};

module.exports = {
CoordinateSystem,
CoordinateSystemTracer
};
7 changes: 7 additions & 0 deletions js/module/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,11 @@ const {

const ChartTracer = require('./chart');

const {
CoordinateSystem,
CoordinateSystemTracer
} = require('./coordinate_system');

const {
DirectedGraph,
DirectedGraphTracer
Expand All @@ -41,6 +46,8 @@ module.exports = {
Array2D,
Array2DTracer,
ChartTracer,
CoordinateSystem,
CoordinateSystemTracer,
DirectedGraph,
DirectedGraphTracer,
UndirectedGraph,
Expand Down
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