PointVisibilityCalculator(IEnumerable <Polyline> holes, VisibilityGraph visibilityGraph, Point point,
VisibilityKind visibilityKind)
{
this.holes = holes;
//this.graphOfHoleBoundaries = holeBoundariesGraph;
this.visibilityGraph = visibilityGraph;
q = point;
qPolylinePoint = new PolylinePoint(q);
QVertex = this.visibilityGraph.AddVertex(qPolylinePoint);
this.visibilityKind = visibilityKind;
heapForSorting = new BinaryHeapWithComparer <Stem>(new StemStartPointComparer(q));
}
public static VisibilityKind getByName(string name)
{
for (int i = 0; i < VALUES_ARRAY.Length; ++i)
{
VisibilityKind result = VALUES_ARRAY[i];
if (result.getName() == name)
{
return(result);
}
}
return(null);
}
public static VisibilityKind get(string literal)
{
for (int i = 0; i < VALUES_ARRAY.Length; ++i)
{
VisibilityKind result = VALUES_ARRAY[i];
if (result.ToString() == literal)
{
return(result);
}
}
return(null);
}
internal static void CalculatePointVisibilityGraph(IEnumerable<Polyline> listOfHoles,
VisibilityGraph visibilityGraph, Point point,
VisibilityKind visibilityKind, out VisibilityVertex qVertex) {
//maybe there is nothing to do
var qv = visibilityGraph.FindVertex(point);
if (qv != null){
qVertex = qv;
return;
}
var calculator = new PointVisibilityCalculator(listOfHoles, visibilityGraph, point, visibilityKind);
calculator.FillGraph();
qVertex = calculator.QVertex;
Debug.Assert(qVertex != null);
}
private string AddVisibility(VisibilityKind visib)
{
if (visib == VisibilityKind.Private)
{
return("-");
}
else if (visib == VisibilityKind.Protected)
{
return("~");
}
else if (visib == VisibilityKind.Public)
{
return("+");
}
return(null);
}
/// <summary>
/// We suppose that the holes are convex and oriented clockwis and are mutually disjoint
/// </summary>
/// <param name="listOfHoles"></param>
/// <param name="visibilityGraph"></param>
/// <param name="point">The point can belong to the boundary of one of the holes</param>
/// <param name="visibilityKind">tangent or regural visibility</param>
/// <param name="qVertex">the graph vertex corresponding to the pivot</param>
/// <returns></returns>
internal static VisibilityVertex CalculatePointVisibilityGraph(
IEnumerable <Polyline> listOfHoles,
VisibilityGraph visibilityGraph,
Point point,
VisibilityKind visibilityKind)
{
//maybe there is nothing to do
var qv = visibilityGraph.FindVertex(point);
if (qv != null)
{
return(qv);
}
var calculator = new PointVisibilityCalculator(listOfHoles, visibilityGraph, point, visibilityKind);
calculator.FillGraph();
return(calculator.QVertex);
}
internal static void CalculatePointVisibilityGraph(IEnumerable <Polyline> listOfHoles,
VisibilityGraph visibilityGraph, Point point,
VisibilityKind visibilityKind, out VisibilityVertex qVertex)
{
//maybe there is nothing to do
var qv = visibilityGraph.FindVertex(point);
if (qv != null)
{
qVertex = qv;
return;
}
var calculator = new PointVisibilityCalculator(listOfHoles, visibilityGraph, point, visibilityKind);
calculator.FillGraph();
qVertex = calculator.QVertex;
Debug.Assert(qVertex != null);
}
PointVisibilityCalculator(IEnumerable<Polyline> holes, VisibilityGraph visibilityGraph, Point point,
VisibilityKind visibilityKind) {
this.holes = holes;
//this.graphOfHoleBoundaries = holeBoundariesGraph;
this.visibilityGraph = visibilityGraph;
q = point;
qPolylinePoint = new PolylinePoint(q);
QVertex = this.visibilityGraph.AddVertex(qPolylinePoint);
this.visibilityKind = visibilityKind;
heapForSorting = new BinaryHeapWithComparer<Stem>(new StemStartPointComparer(q));
}
static VisibilityKind()
{
VALUES_ARRAY = new VisibilityKind[4];
NONE = new VisibilityKind(0, "none", "none");
VALUES_ARRAY[0] = NONE;
}