Path::OutlineJoin. for inside join, simplify nodes only for obtuse angle (Bug 820425, comment 8)

Fixed bugs:
  - https://launchpad.net/bugs/820425

(bzr r12084)

1 files changed, 7 insertions, 3 deletions

diff --git a/src/livarot/PathOutline.cpp b/src/livarot/PathOutline.cpp
index 1993a7862..7f8853e31 100644
--- a/src/livarot/PathOutline.cpp
+++ b/src/livarot/PathOutline.cpp
@@ -1189,11 +1189,15 @@ Path::OutlineJoin (Path * dest, Geom::Point pos, Geom::Point stNor, Geom::Point
         if ((angSi > 0 && width >= 0) 
             || (angSi < 0 && width < 0)) { // This is an inside join -> join is independent of chosen JoinType.
             if ((dest->descr_cmd[dest->descr_cmd.size() - 1]->getType() == descr_lineto) && (nType == descr_lineto)) {
-                PathDescrLineTo* nLine = dynamic_cast<PathDescrLineTo*>(dest->descr_cmd[dest->descr_cmd.size() - 1]);
                 Geom::Point const biss = unit_vector(Geom::rot90( stNor - enNor ));
                 double c2 = Geom::dot (biss, enNor);
-                double l = width / c2;
-                nLine->p = pos + l*biss;  // relocate to bisector
+                if (fabs(c2) > 0.707107) {    // apply only to obtuse angles
+                    double l = width / c2;
+                    PathDescrLineTo* nLine = dynamic_cast<PathDescrLineTo*>(dest->descr_cmd[dest->descr_cmd.size() - 1]);
+                    nLine->p = pos + l*biss;  // relocate to bisector
+                } else {
+                    dest->LineTo (pos + width*enNor);
+                }
             } else {
 //                dest->LineTo (pos);	// redundant
                 dest->LineTo (pos + width*enNor);