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Add multigraph support. Visualization and some algorithms.

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Unick Soft
2019-10-05 16:11:40 +02:00
parent c580c5aef9
commit 063c2f9ec0
21 changed files with 367 additions and 85 deletions
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161
script/Graph.js
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@@ -16,6 +16,8 @@ function Graph()
this.uidEdge = 10000;
// Has direction edge.
this.hasDirect = false;
// Is graph multi
this.isMultiGraph = false;
};
// infinity
@@ -37,43 +39,33 @@ Graph.prototype.AddNewEdgeSafe = function(graph1, graph2, isDirect, weight)
return this.AddNewEdge(new BaseEdge(graph1, graph2, isDirect, weight));
}
Graph.prototype.AddNewEdge = function(edge)
Graph.prototype.AddNewEdge = function(edge, replaceIfExists)
{
edge.id = this.uidEdge;
this.uidEdge = this.uidEdge + 1;
var edge1 = this.FindEdge(edge.vertex1.id, edge.vertex2.id);
var edgeRevert = this.FindEdge(edge.vertex2.id, edge.vertex1.id);
var edge1 = this.FindEdgeAny(edge.vertex1.id, edge.vertex2.id);
var edgeRevert = this.FindEdgeAny(edge.vertex2.id, edge.vertex1.id);
if (!edge.isDirect)
{
if (edge1 != null)
{
if (edge1 != null && replaceIfExists)
this.DeleteEdge(edge1);
}
if (edgeRevert != null)
{
if (edgeRevert != null && replaceIfExists)
this.DeleteEdge(edgeRevert);
}
this.edges.push(edge);
}
else
{
if (edge1 != null)
{
if (edge1 != null && replaceIfExists)
this.DeleteEdge(edge1);
}
if (edgeRevert != null && !edgeRevert.isDirect)
{
if (edgeRevert != null && !edgeRevert.isDirect && replaceIfExists)
this.DeleteEdge(edgeRevert);
}
else if (edgeRevert != null)
{
edgeRevert.hasPair = true;
edge.hasPair = true;
}
this.edges.push(edge);
}
this.isMultiGraph = this.checkMutiGraph();
return this.edges.length - 1;
}
@@ -84,16 +76,12 @@ Graph.prototype.DeleteEdge = function(edgeObject)
var index = this.edges.indexOf(edgeObject);
if (index > -1)
{
var edgeRevert = this.FindEdge(edgeObject.vertex2.id, edgeObject.vertex1.id);
if (edgeRevert != null && edgeRevert.isDirect)
{
edgeRevert.hasPair = false;
}
this.edges.splice(index, 1);
}
this.isMultiGraph = this.checkMutiGraph();
}
Graph.prototype.DeleteVertex = function(vertexObject)
{
var index = this.vertices.indexOf(vertexObject);
@@ -126,7 +114,13 @@ Graph.prototype.FindVertex = function(id)
return res;
}
// depricated
Graph.prototype.FindEdge = function(id1, id2)
{
return this.FindEdgeAny(id1, id2);
}
Graph.prototype.FindEdgeAny = function(id1, id2)
{
var res = null;
for (var i = 0; i < this.edges.length; i++)
@@ -142,6 +136,43 @@ Graph.prototype.FindEdge = function(id1, id2)
return res;
}
Graph.prototype.FindEdgeMin = function(id1, id2)
{
var res = null;
var minWeight = this.infinity;
for (var i = 0; i < this.edges.length; i++)
{
var edge = this.edges[i];
if ((edge.vertex1.id == id1 && edge.vertex2.id == id2)
|| (!edge.isDirect && edge.vertex1.id == id2 && edge.vertex2.id == id1))
{
if (edge.weight < minWeight)
{
res = edge;
minWeight = edge.weight;
}
}
}
return res;
}
Graph.prototype.FindAllEdges = function(id1, id2)
{
var res = [];
for (var i = 0; i < this.edges.length; i++)
{
var edge = this.edges[i];
if ((edge.vertex1.id == id1 && edge.vertex2.id == id2)
|| (!edge.isDirect && edge.vertex1.id == id2 && edge.vertex2.id == id1))
{
res.push(edge);
}
}
return res;
}
Graph.prototype.GetAdjacencyMatrixStr = function ()
{
var matrix = "";
@@ -149,7 +180,7 @@ Graph.prototype.GetAdjacencyMatrixStr = function ()
{
for (var j = 0; j < this.vertices.length; j++)
{
var edge = this.FindEdge (this.vertices[i].id, this.vertices[j].id);
var edge = this.FindEdgeMin (this.vertices[i].id, this.vertices[j].id);
if (edge != null)
{
matrix += edge.weight;
@@ -182,7 +213,7 @@ Graph.prototype.GetAdjacencyMatrix = function ()
for (var j = 0; j < this.vertices.length; j ++)
{
var v2 = this.vertices[j];
var edge = this.FindEdge(v1.id, v2.id);
var edge = this.FindEdgeMin(v1.id, v2.id);
if (edge != null)
{
matrix[i][j] = edge.GetWeight();
@@ -845,6 +876,8 @@ Graph.prototype.LoadFromXML = function (xmlText, additionalData)
{
additionalData["data"] = $additional.attr('data');
}
this.isMultiGraph = this.checkMutiGraph();
}
Graph.prototype.hasDirectEdge = function ()
@@ -910,3 +943,75 @@ Graph.prototype.getGraphBBox = function (viewportSize)
return new Rect(pointMin, pointMax);
}
Graph.prototype.hasPair = function (edge)
{
return this.FindPairFor(edge) != null;
}
Graph.prototype.FindPairFor = function (edge)
{
var res = this.getNeighbourEdges(edge);
return res.length == 1 ? res[0] : null;
}
Graph.prototype.getNeighbourEdges = function (edge)
{
var res = [];
for (var i = 0; i < this.edges.length; i++)
{
var curEdge = this.edges[i];
if (curEdge == edge)
continue;
if ((curEdge.vertex1.id == edge.vertex1.id &&
curEdge.vertex2.id == edge.vertex2.id) ||
(curEdge.vertex1.id == edge.vertex2.id &&
curEdge.vertex2.id == edge.vertex1.id))
{
res.push(curEdge);
}
}
return res;
}
Graph.prototype.checkMutiGraph = function ()
{
var res = false;
var start = {};
for (var i = 0; i < this.edges.length; i++)
{
var edge = this.edges[i];
if (start.hasOwnProperty(edge.vertex1.id) &&
start[edge.vertex1.id] == edge.vertex2.id)
{
res = true;
break;
}
start[edge.vertex1.id] = edge.vertex2.id;
if (!edge.isDirect)
{
if (start.hasOwnProperty(edge.vertex2.id) &&
start[edge.vertex2.id] == edge.vertex1.id)
{
res = true;
break;
}
start[edge.vertex2.id] = edge.vertex1.id;
}
}
return res;
}
Graph.prototype.isMulti = function ()
{
return this.isMultiGraph;
}