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avoid -Wsign-compare warning

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This commit is contained in:
Dane Springmeyer 2015-04-05 08:56:06 -04:00
parent c4273ffed6
commit 159997fe25
1 changed files with 2 additions and 2 deletions
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4
include/mapnik/util/is_clockwise.hpp
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@ -30,13 +30,13 @@ bool is_clockwise(T const& ring)
{
double area = 0.0;
std::size_t num_points = ring.size();
for (int i = 0; i < num_points; ++i)
for (std::size_t i = 0; i < num_points; ++i)
{
auto const& p0 = ring[i];
auto const& p1 = ring[(i + 1) % num_points];
area += p0.x * p1.y - p0.y * p1.x;
}
return ( area < 0.0) ? true : false;
return (area < 0.0) ? true : false;
}
}}