| public static EdgeIntersect ( LibTessDotNet.MeshUtils.Vertex o1, LibTessDotNet.MeshUtils.Vertex d1, LibTessDotNet.MeshUtils.Vertex o2, LibTessDotNet.MeshUtils.Vertex d2, LibTessDotNet.MeshUtils.Vertex v ) : void | ||
| o1 | LibTessDotNet.MeshUtils.Vertex | |
| d1 | LibTessDotNet.MeshUtils.Vertex | |
| o2 | LibTessDotNet.MeshUtils.Vertex | |
| d2 | LibTessDotNet.MeshUtils.Vertex | |
| v | LibTessDotNet.MeshUtils.Vertex | |
| return | void | |
private bool CheckForIntersect(ActiveRegion regUp)
{
ActiveRegion activeRegion = RegionBelow(regUp);
MeshUtils.Edge eUp = regUp._eUp;
MeshUtils.Edge eUp2 = activeRegion._eUp;
MeshUtils.Vertex org = eUp._Org;
MeshUtils.Vertex org2 = eUp2._Org;
MeshUtils.Vertex dst = eUp._Dst;
MeshUtils.Vertex dst2 = eUp2._Dst;
if (org == org2)
{
return(false);
}
float num = Math.Min(org._t, dst._t);
float num2 = Math.Max(org2._t, dst2._t);
if (num > num2)
{
return(false);
}
if (Geom.VertLeq(org, org2))
{
if (Geom.EdgeSign(dst2, org, org2) > 0f)
{
return(false);
}
}
else if (Geom.EdgeSign(dst, org2, org) < 0f)
{
return(false);
}
MeshUtils.Vertex vertex = MeshUtils.Pooled <MeshUtils.Vertex> .Create();
Geom.EdgeIntersect(dst, org, dst2, org2, vertex);
if (Geom.VertLeq(vertex, _event))
{
vertex._s = _event._s;
vertex._t = _event._t;
}
MeshUtils.Vertex vertex2 = Geom.VertLeq(org, org2) ? org : org2;
if (Geom.VertLeq(vertex2, vertex))
{
vertex._s = vertex2._s;
vertex._t = vertex2._t;
}
if (Geom.VertEq(vertex, org) || Geom.VertEq(vertex, org2))
{
CheckForRightSplice(regUp);
return(false);
}
if ((!Geom.VertEq(dst, _event) && Geom.EdgeSign(dst, _event, vertex) >= 0f) || (!Geom.VertEq(dst2, _event) && Geom.EdgeSign(dst2, _event, vertex) <= 0f))
{
if (dst2 == _event)
{
_mesh.SplitEdge(eUp._Sym);
_mesh.Splice(eUp2._Sym, eUp);
regUp = TopLeftRegion(regUp);
eUp = RegionBelow(regUp)._eUp;
FinishLeftRegions(RegionBelow(regUp), activeRegion);
ActiveRegion regUp2 = regUp;
MeshUtils.Edge oprev = eUp._Oprev;
MeshUtils.Edge edge = eUp;
AddRightEdges(regUp2, oprev, edge, edge, true);
return(true);
}
if (dst == _event)
{
_mesh.SplitEdge(eUp2._Sym);
_mesh.Splice(eUp._Lnext, eUp2._Oprev);
activeRegion = regUp;
regUp = TopRightRegion(regUp);
MeshUtils.Edge rprev = RegionBelow(regUp)._eUp._Rprev;
activeRegion._eUp = eUp2._Oprev;
eUp2 = FinishLeftRegions(activeRegion, null);
AddRightEdges(regUp, eUp2._Onext, eUp._Rprev, rprev, true);
return(true);
}
if (Geom.EdgeSign(dst, _event, vertex) >= 0f)
{
RegionAbove(regUp)._dirty = (regUp._dirty = true);
_mesh.SplitEdge(eUp._Sym);
eUp._Org._s = _event._s;
eUp._Org._t = _event._t;
}
if (Geom.EdgeSign(dst2, _event, vertex) <= 0f)
{
regUp._dirty = (activeRegion._dirty = true);
_mesh.SplitEdge(eUp2._Sym);
eUp2._Org._s = _event._s;
eUp2._Org._t = _event._t;
}
return(false);
}
_mesh.SplitEdge(eUp._Sym);
_mesh.SplitEdge(eUp2._Sym);
_mesh.Splice(eUp2._Oprev, eUp);
eUp._Org._s = vertex._s;
eUp._Org._t = vertex._t;
eUp._Org._pqHandle = _pq.Insert(eUp._Org);
if (eUp._Org._pqHandle._handle == PQHandle.Invalid)
{
throw new InvalidOperationException("PQHandle should not be invalid");
}
GetIntersectData(eUp._Org, org, dst, org2, dst2);
RegionAbove(regUp)._dirty = (regUp._dirty = (activeRegion._dirty = true));
return(false);
}