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Clipper - fix PolyTree traversal

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This commit is contained in:
artemp 2015-04-10 14:13:08 +02:00
parent fb61a2bb90
commit 2ebc729cc8
1 changed files with 10 additions and 11 deletions
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13
benchmark/test_polygon_clipping.cpp
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@ -512,26 +512,25 @@ public:
bool first = true;
while (polynode)
{
//do stuff with polynode here
if (first) first = false;
else mp.emplace_back();
if (!polynode->IsHole())
{
if (first) first = false;
else mp.emplace_back(); // start new polygon
for (auto const& pt : polynode->Contour)
{
mp.back().exterior_ring.add_coord(pt.X, pt.Y);
}
}
else
// childrens are interior rings
for (auto const* ring : polynode->Childs)
{
mapnik::geometry::linear_ring hole;
for (auto const& pt : polynode->Contour)
for (auto const& pt : ring->Contour)
{
hole.add_coord(pt.X, pt.Y);
}
mp.back().add_hole(std::move(hole));
}
std::cerr << "Is hole? " << polynode->IsHole() << std::endl;
}
polynode = polynode->GetNext();
}
std::string expect = expected_+".png";