internal static com.epl.geometry.Envelope2DIntersectorImpl GetEnvelope2DIntersectorForParts(com.epl.geometry.MultiPathImpl multipathImplA, com.epl.geometry.MultiPathImpl multipathImplB, double tolerance, bool bExteriorOnlyA, bool bExteriorOnlyB)
{
int type_a = multipathImplA.GetType().Value();
int type_b = multipathImplB.GetType().Value();
com.epl.geometry.Envelope2D env_a = new com.epl.geometry.Envelope2D();
com.epl.geometry.Envelope2D env_b = new com.epl.geometry.Envelope2D();
multipathImplA.QueryLooseEnvelope2D(env_a);
multipathImplB.QueryLooseEnvelope2D(env_b);
env_a.Inflate(tolerance, tolerance);
env_b.Inflate(tolerance, tolerance);
com.epl.geometry.Envelope2D envInter = new com.epl.geometry.Envelope2D();
envInter.SetCoords(env_a);
envInter.Intersect(env_b);
com.epl.geometry.Envelope2DIntersectorImpl intersector = new com.epl.geometry.Envelope2DIntersectorImpl();
intersector.SetTolerance(tolerance);
bool b_found_red = false;
intersector.StartRedConstruction();
for (int ipath_a = 0, npaths = multipathImplA.GetPathCount(); ipath_a < npaths; ipath_a++)
{
if (bExteriorOnlyA && type_a == com.epl.geometry.Geometry.GeometryType.Polygon && !multipathImplA.IsExteriorRing(ipath_a))
{
continue;
}
multipathImplA.QueryPathEnvelope2D(ipath_a, env_a);
if (!env_a.IsIntersecting(envInter))
{
continue;
}
b_found_red = true;
intersector.AddRedEnvelope(ipath_a, env_a);
}
intersector.EndRedConstruction();
if (!b_found_red)
{
return(null);
}
bool b_found_blue = false;
intersector.StartBlueConstruction();
for (int ipath_b = 0, npaths = multipathImplB.GetPathCount(); ipath_b < npaths; ipath_b++)
{
if (bExteriorOnlyB && type_b == com.epl.geometry.Geometry.GeometryType.Polygon && !multipathImplB.IsExteriorRing(ipath_b))
{
continue;
}
multipathImplB.QueryPathEnvelope2D(ipath_b, env_b);
if (!env_b.IsIntersecting(envInter))
{
continue;
}
b_found_blue = true;
intersector.AddBlueEnvelope(ipath_b, env_b);
}
intersector.EndBlueConstruction();
if (!b_found_blue)
{
return(null);
}
return(intersector);
}
