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// Copyright: Matra-Datavision 1991
// File: PCollection_Vertex.gxx
// Created: Wed May 29 17:04:56 1991
// Author: Denis PASCAL
// <dp>
// Revised by: Mireille MERCIEN
// Sep,7 1992
#include <Standard_NoSuchObject.hxx>
#include <Standard_NoMoreObject.hxx>
//---------------------------------------------------------------------------
// Constructor
//---------------------------------------------------------------------------
PCollection_Vertex::
PCollection_Vertex (const Item& Value,
const Handle(PCollection_HDirectedGraph)& InGraph)
{
MyItem = Value;
MyGraph = InGraph;
MyFrontEdges = new PCollection_SetOfEdge;
MyBackEdges = new PCollection_SetOfEdge;
}
//---------------------------------------------------------------------------
// GetItem
//---------------------------------------------------------------------------
Item PCollection_Vertex::GetItem () const
{
return MyItem;
}
//---------------------------------------------------------------------------
// SetItem
//---------------------------------------------------------------------------
void PCollection_Vertex::SetItem (const Item& Value)
{
MyItem = Value;
}
//---------------------------------------------------------------------------
// GetGraph
//---------------------------------------------------------------------------
Handle(PCollection_HDirectedGraph) PCollection_Vertex::GetGraph () const
{
return MyGraph;
}
//---------------------------------------------------------------------------
// AddFrontEdge
//---------------------------------------------------------------------------
Boolean PCollection_Vertex::AddFrontEdge (const Handle(PCollection_Edge)& E)
{
if (MyFrontEdges->Contains(E)) {
return False;
}
else {
MyFrontEdges->Add(E);
return True;
}
}
//---------------------------------------------------------------------------
// RemoveFrontEdge
//---------------------------------------------------------------------------
void PCollection_Vertex::RemoveFrontEdge (const Handle(PCollection_Edge)& E)
{
if (MyFrontEdges->Contains(E)) {
MyFrontEdges->Remove(E);
}
else {
Standard_NoSuchObject::Raise();
}
}
//---------------------------------------------------------------------------
// NbFrontEdges
//---------------------------------------------------------------------------
Integer PCollection_Vertex::NbFrontEdges () const
{
return MyFrontEdges->Extent();
}
//---------------------------------------------------------------------------
// GetFrontEdges
//---------------------------------------------------------------------------
Handle(PCollection_SetOfEdge) PCollection_Vertex::GetFrontEdges () const
{
return MyFrontEdges;
}
//---------------------------------------------------------------------------
// AddBackEdge
//---------------------------------------------------------------------------
Boolean PCollection_Vertex::AddBackEdge (const Handle(PCollection_Edge)& E)
{
if (MyBackEdges->Contains(E)) {
return False;
}
else {
MyBackEdges->Add(E);
return True;
}
}
//---------------------------------------------------------------------------
// RemoveBackEdge
//---------------------------------------------------------------------------
void PCollection_Vertex::RemoveBackEdge (const Handle(PCollection_Edge)& E)
{
if (MyBackEdges->Contains(E)) {
MyBackEdges->Remove(E);
}
else {
Standard_NoSuchObject::Raise();
}
}
//---------------------------------------------------------------------------
// NbBackEdges
//---------------------------------------------------------------------------
Integer PCollection_Vertex::NbBackEdges () const
{
return MyBackEdges->Extent();
}
//---------------------------------------------------------------------------
// GetBackEdges
//---------------------------------------------------------------------------
Handle(PCollection_SetOfEdge) PCollection_Vertex::GetBackEdges () const
{
return MyBackEdges;
}
//---------------------------------------------------------------------------
// IsRoot
//---------------------------------------------------------------------------
Boolean PCollection_Vertex::IsRoot () const
{
return (NbBackEdges() == 0);
}
//---------------------------------------------------------------------------
// IsLeaf
//---------------------------------------------------------------------------
Boolean PCollection_Vertex::IsLeaf () const
{
return (NbFrontEdges() == 0);
}
//---------------------------------------------------------------------------
// IsDestination
//---------------------------------------------------------------------------
Boolean PCollection_Vertex::
IsDestination (const Handle(PCollection_Vertex)& V) const
{
PCollection_SetIteratorOfSetOfEdge It(MyBackEdges);
while (It.More()) {
Handle(PCollection_Edge) E = It.Value();
if (E->Source() == V) return True;
It.Next();
}
return False;
}
//---------------------------------------------------------------------------
// IsSource
//---------------------------------------------------------------------------
Boolean PCollection_Vertex::
IsSource (const Handle(PCollection_Vertex)& V) const
{
PCollection_SetIteratorOfSetOfEdge It(MyFrontEdges);
while (It.More()) {
Handle(PCollection_Edge) E = It.Value();
if ( E->Destination() == V) return True;
It.Next();
}
return False;
}
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