tentative intermediate state for ArdourCanvas::Curve

[ardour.git] / libs / canvas / poly_line.cc

diff --git a/libs/canvas/poly_line.cc b/libs/canvas/poly_line.cc
index 7118e47555d1e74d0f03752e5855ffe8fbd2d8c5..ae6d15a8fdceb25d0d81eda7ec3b7618f1a3de50 100644 (file)
--- a/libs/canvas/poly_line.cc
+++ b/libs/canvas/poly_line.cc
@@ -28,6 +28,7 @@ using namespace ArdourCanvas;
 PolyLine::PolyLine (Group* parent)
        : Item (parent)
        , PolyItem (parent)
+       , _threshold (1.0)
 {
 
 }
@@ -59,7 +60,6 @@ PolyLine::covers (Duple const & point) const
        /* repeat for each line segment */
 
        const Rect visible (_canvas->visible_area());
-       static const double threshold = 2.0;
 
        for (i = 1, j = 0; i < npoints; ++i, ++j) {
 
@@ -82,10 +82,10 @@ PolyLine::covers (Duple const & point) const
                double d = distance_to_segment_squared (p, a, b, t, at);
                
                if (t < 0.0 || t > 1.0) {
-                       return false;
+                       continue;
                }
                
-               if (d < threshold) {
+               if (d < _threshold + _outline_width) {
                        return true;
                }
                
@@ -93,3 +93,9 @@ PolyLine::covers (Duple const & point) const
        
        return false;
 }
+
+void
+PolyLine::set_covers_threshold (double t)
+{
+       _threshold = t;
+}