public void AddVertex(int sideIndex, Vertex newVertex)
{
int nextIndex = (sideIndex + 1) % this.NumberOfVertices;
_relations[sideIndex] = new EmptyRelation();
_InsertVertex(nextIndex, newVertex);
}
public bool UnsetRelation(int sideIndex)
{
bool res = !(_relations[sideIndex].IsEmpty());
_relations[sideIndex] = new EmptyRelation();
return(true);
}
public void DeleteVertex(int vertexIndex)
{
int indexBefore = ((vertexIndex - 1) + this.NumberOfVertices) % this.NumberOfVertices;
_relations[indexBefore] = new EmptyRelation();
_vertices.RemoveAt(vertexIndex);
_relations.RemoveAt(vertexIndex);
}
public void FixRelations()
{
for (int i = 0; i < this.NumberOfVertices; ++i)
{
if (!_relations[i].IsFixed && !_relations[i].IsEmpty())
{
Relation newRelation = _relations[i].Copy();
newRelation.IsFixed = true;
_relations[i] = new EmptyRelation();
this.SetRelation(i, newRelation);
}
}
}
public void AddAutomaticRelations()
{
for (int i = 0; i < this.NumberOfVertices; ++i)
{
if (!_relations[i].IsFixed)
{
FreeVector vSide = new FreeVector(_vertices[i].Location,
_vertices[(i + 1) % this.NumberOfVertices].Location);
if (vSide.IsApproxVertical())
{
_relations[i] = new VerticalRelation(false);
}
else if (vSide.IsApproxHorizontal())
{
_relations[i] = new HorizontalRelation(false);
}
else
{
_relations[i] = new EmptyRelation();
}
}
}
}