static bool SegmentVisistor(Segment s0, Segment s1, ref Context context, UserData userData, out UserData o_userData)
{
o_userData = new UserData();
if (s0 == null) // starting segment
{
Assert.IsNull(userData);
int n0 = s1.Index * 2,
n1 = n0 + 1;
float width = (s1.Highway) ? context.highwayWidth : context.streetWidth;
CreateStartSegmentPoints(
s1.Start * context.scale,
s1.End * context.scale,
width,
context.lengthStep,
(s1.Highway) ? context.highwayU : 1,
n0,
n1,
ref context.segmentPositions,
ref context.crossingPositions,
ref context.segmentUVs,
ref context.segmentIndices,
context.edgeToIndicesMap,
out o_userData.i0,
out o_userData.i1,
out o_userData.v
);
o_userData.origin = s1.Start;
}
else if (s1 == null) // end segment
{
int n0 = s0.Index * 2,
n1 = n0 + 1;
float width = (s0.Highway) ? context.highwayWidth : context.streetWidth;
CreateEndSegmentPoints(
((userData != null) ? userData.origin : s0.Start) * context.scale,
s0.Start * context.scale,
s0.End * context.scale,
width,
context.lengthStep,
(s0.Highway) ? context.highwayU : 1,
(userData != null) ? userData.v : 0,
n0,
n1,
(userData != null) ? userData.i0 : -1,
(userData != null) ? userData.i1 : -1,
ref context.segmentPositions,
ref context.crossingPositions,
ref context.segmentUVs,
ref context.segmentIndices,
context.edgeToIndicesMap
);
}
else // mid segment
{
Assert.IsNotNull(userData);
Assert.AreEqual(s0.End, s1.Start);
int n0 = s1.Index * 2,
n1 = n0 + 1;
float width = (s1.Highway) ? context.highwayWidth : context.streetWidth;
CreateMidSegmentPoints(
s0.Start * context.scale,
s1.Start * context.scale,
s1.End * context.scale,
width,
context.lengthStep,
(s1.Highway) ? context.highwayU : 1,
userData.v,
n0,
n1,
userData.i0,
userData.i1,
ref context.segmentPositions,
ref context.crossingPositions,
ref context.segmentUVs,
ref context.segmentIndices,
context.edgeToIndicesMap,
out o_userData.i0,
out o_userData.i1,
out o_userData.v
);
o_userData.origin = s1.Start;
}
return(true);
}
