Fix bug 1627202 on mirror symmetry wrong results on transforms

Fixed bugs:
  - https://launchpad.net/bugs/1627202

(bzr r15127)

2 files changed, 14 insertions, 1 deletions

diff --git a/src/live_effects/lpe-mirror_symmetry.cpp b/src/live_effects/lpe-mirror_symmetry.cpp
index afb7e2230..fc13415fd 100644
--- a/src/live_effects/lpe-mirror_symmetry.cpp
+++ b/src/live_effects/lpe-mirror_symmetry.cpp
@@ -87,7 +87,7 @@ void
 LPEMirrorSymmetry::doBeforeEffect (SPLPEItem const* lpeitem)
 {
     using namespace Geom;
-
+    original_bbox(lpeitem);
     Point point_a(boundingbox_X.max(), boundingbox_Y.min());
     Point point_b(boundingbox_X.max(), boundingbox_Y.max());
     Point point_c(boundingbox_X.max(), boundingbox_Y.middle());
@@ -145,6 +145,18 @@ LPEMirrorSymmetry::doBeforeEffect (SPLPEItem const* lpeitem)
 }
 
 void
+LPEMirrorSymmetry::transform_multiply(Geom::Affine const& postmul, bool set)
+{
+    center_point *= postmul;
+    previous_center = center_point;
+    // cycle through all parameters. Most parameters will not need transformation, but path and point params do.
+    for (std::vector<Parameter *>::iterator it = param_vector.begin(); it != param_vector.end(); ++it) {
+        Parameter * param = *it;
+        param->param_transform_multiply(postmul, set);
+    }
+}
+
+void
 LPEMirrorSymmetry::doOnApply (SPLPEItem const* lpeitem)
 {
     using namespace Geom;
diff --git a/src/live_effects/lpe-mirror_symmetry.h b/src/live_effects/lpe-mirror_symmetry.h
index 9e5b4d628..7ec4029e0 100644
--- a/src/live_effects/lpe-mirror_symmetry.h
+++ b/src/live_effects/lpe-mirror_symmetry.h
@@ -46,6 +46,7 @@ public:
     virtual ~LPEMirrorSymmetry();
     virtual void doOnApply (SPLPEItem const* lpeitem);
     virtual void doBeforeEffect (SPLPEItem const* lpeitem);
+    virtual void transform_multiply(Geom::Affine const& postmul, bool set);
     virtual Geom::PathVector doEffect_path (Geom::PathVector const & path_in);
     /* the knotholder entity classes must be declared friends */
     friend class MS::KnotHolderEntityCenterMirrorSymmetry;