Working on coontinuing paths

3 files changed, 15 insertions, 5 deletions

diff --git a/src/live_effects/lpe-powerstroke.cpp b/src/live_effects/lpe-powerstroke.cpp
index 7c060a965..e9943af4c 100644
--- a/src/live_effects/lpe-powerstroke.cpp
+++ b/src/live_effects/lpe-powerstroke.cpp
@@ -645,7 +645,7 @@ LPEPowerStroke::doEffect_path (Geom::PathVector const & path_in)
     }
 
     LineJoinType jointype = static_cast<LineJoinType>(linejoin_type.get_value());
-    Piecewise<D2<SBasis> > pwd2_out = compose(pwd2_in,x) + y*compose(n,x);
+    Piecewise<D2<SBasis> > pwd2_out   =          compose(pwd2_in,x) + y*compose(n,x);
     Piecewise<D2<SBasis> > mirrorpath = reverse( compose(pwd2_in,x) - y*compose(n,x));
     Geom::Path fixed_path       = path_from_piecewise_fix_cusps( pwd2_out,   y,          jointype, miter_limit, LPE_CONVERSION_TOLERANCE);
     Geom::Path fixed_mirrorpath = path_from_piecewise_fix_cusps( mirrorpath, reverse(y), jointype, miter_limit, LPE_CONVERSION_TOLERANCE);
diff --git a/src/live_effects/parameter/powerstrokepointarray.cpp b/src/live_effects/parameter/powerstrokepointarray.cpp
index 7e2da4cfd..289498498 100644
--- a/src/live_effects/parameter/powerstrokepointarray.cpp
+++ b/src/live_effects/parameter/powerstrokepointarray.cpp
@@ -90,18 +90,28 @@ PowerStrokePointArrayParam::recalculate_controlpoints_for_new_pwd2(Geom::Piecewi
 }
 
 /** call this method to recalculate the controlpoints when path is reversed.*/
-void
-PowerStrokePointArrayParam::reverse_controlpoints()
+std::vector<Geom::Point>
+PowerStrokePointArrayParam::reverse_controlpoints(bool write)
 {
+    std::vector<Geom::Point> controlpoints;
     if (!last_pwd2.empty()) {
         Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in_reverse = reverse(last_pwd2);
         for (unsigned int i = 0; i < _vector.size(); ++i) {
             Geom::Point control_pos = last_pwd2.valueAt(_vector[i][Geom::X]);
             double new_pos = Geom::nearest_time(control_pos, pwd2_in_reverse);
+            controlpoints.push_back(Geom::Point(new_pos,_vector[i][Geom::Y]));
             _vector[i][Geom::X] = new_pos;
         }
-        write_to_SVG();
+        if (write) {
+            write_to_SVG();
+            _vector.clear();
+            _vector = controlpoints;
+            controlpoints.clear();
+            write_to_SVG();
+            return _vector;
+        }
     }
+    return controlpoints;
 }
 
 float PowerStrokePointArrayParam::median_width()
diff --git a/src/live_effects/parameter/powerstrokepointarray.h b/src/live_effects/parameter/powerstrokepointarray.h
index b8e63e5f7..a1d4db3ca 100644
--- a/src/live_effects/parameter/powerstrokepointarray.h
+++ b/src/live_effects/parameter/powerstrokepointarray.h
@@ -47,7 +47,7 @@ public:
     Geom::Piecewise<Geom::D2<Geom::SBasis> > const & get_pwd2_normal() const { return last_pwd2_normal; }
 
     void recalculate_controlpoints_for_new_pwd2(Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in);
-    void reverse_controlpoints();
+    std::vector<Geom::Point> reverse_controlpoints(bool write);
     void set_scale_width(double scale_width){_scale_width = scale_width;};
     double _scale_width;
     friend class PowerStrokePointArrayParamKnotHolderEntity;