Make LPE Path along path behave more naturally. (fixes problems in moving a path with that effect applied to it)

(bzr r4107)

1 files changed, 7 insertions, 1 deletions

diff --git a/src/live_effects/lpe-pathalongpath.cpp b/src/live_effects/lpe-pathalongpath.cpp
index 499b77f8c..7138b6faa 100644
--- a/src/live_effects/lpe-pathalongpath.cpp
+++ b/src/live_effects/lpe-pathalongpath.cpp
@@ -102,6 +102,9 @@ LPEPathAlongPath::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > & pwd2
 

     Piecewise<D2<SBasis> > uskeleton = arc_length_parametrization(Piecewise<D2<SBasis> >(bend_path),2,.1);

     uskeleton = remove_short_cuts(uskeleton,.01);

+    Rect uskeletonbounds = bounds_exact(uskeleton);

+    uskeleton -= uskeletonbounds.midpoint();

+

     Piecewise<D2<SBasis> > n = rot90(derivative(uskeleton));

     n = force_continuity(remove_short_cuts(n,.1));

 

@@ -111,7 +114,7 @@ LPEPathAlongPath::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > & pwd2
     Interval pattBnds = bounds_exact(x);

     x -= pattBnds.min();

     Interval pattBndsY = bounds_exact(y);

-    y -= (pattBndsY.max()+pattBndsY.min())/2;

+    y -= pattBndsY.middle();

 

     int nbCopies = int(uskeleton.cuts.back()/pattBnds.extent());

     double scaling = 1;

@@ -154,6 +157,9 @@ LPEPathAlongPath::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > & pwd2
         output.concat(compose(uskeleton,x+offs)+y*compose(n,x+offs));

         offs+=pattWidth;

     }

+

+    output += Point(pattBnds.middle(), pattBndsY.middle());

+

     return output;

 }