[intersection] fix segments_intersection_ratios

adding the new one_degenerate method
2026-02-17 13:52:09 +00:00 · 2014-05-03 14:41:33 +02:00
parent 47d581304e
commit 7b2a4cb589
1 changed files with 18 additions and 0 deletions
--- a/include/boost/geometry/policies/relate/intersection_ratios.hpp
+++ b/include/boost/geometry/policies/relate/intersection_ratios.hpp
@@ -99,6 +99,24 @@ struct segments_intersection_ratios
    {
        return return_type();
    }
+
+    template <typename Segment, typename Ratio>
+    static inline return_type one_degenerate(Segment const& ,
+            Ratio const& ratio, bool a_degenerate)
+    {
+        return_type result;
+        if (a_degenerate)
+        {
+            // IP lies on ratio w.r.t. segment b
+            result.assign(Ratio::zero(), ratio);
+        }
+        else
+        {
+            result.assign(ratio, Ratio::zero());
+        }
+        return result;
+    }
+
 };