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[strategies][cart_intersect] Compare ratios denominators consistently. #267

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Merged
merged 1 commit into from
Mar 22, 2015
Merged

[strategies][cart_intersect] Compare ratios denominators consistently. #267

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3 changes: 2 additions & 1 deletion include/boost/geometry/strategies/cartesian/cart_intersect.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -200,7 +200,8 @@ struct relate_cartesian_segments
get<1>(robust_b1) - get<1>(robust_a1),
robust_db0, robust_db);

if (robust_da0 == 0)
robust_coordinate_type const zero = 0;
if (math::equals(robust_da0, zero) || math::equals(robust_db0, zero))
{
// If this is the case, no rescaling is done for FP precision.
// We set it to collinear, but it indicates a robustness issue.
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