+ draw additional dashed line in brush tool

src/Gui/MouseSelection.cpp

@@ -481,6 +481,7 @@ BrushSelection::BrushSelection()
 {
     m_iNodes     = 0;
     m_bWorking   = false;
+    m_bClose     = false;
 }
 
 void BrushSelection::initialize()
@@ -507,6 +508,11 @@ void BrushSelection::setLineWidth(float l)
     this->l = l;
 }
 
+void BrushSelection::setClosed(bool on)
+{
+    this->m_bClose = on;
+}
+
 void BrushSelection::draw ()
 {
     if (mustRedraw){
@@ -532,6 +538,21 @@ void BrushSelection::draw ()
         p.begin(_pcView3D);
         p.setLineWidth(this->l);
         p.setColor(this->r, this->g, this->b, this->a);
+        if (m_bClose && !_cNodeVector.empty()) {
+            // We have to redraw the whole polyline when using XOR because otherwise the curve looks 'dirty'.
+            QPoint start = _cNodeVector.front();
+            for (std::vector<QPoint>::iterator it = _cNodeVector.begin()+1; it != _cNodeVector.end(); ++it) {
+                p.drawLine(start.x(),start.y(),it->x(), it->y());
+                start = *it;
+            }
+            start = _cNodeVector.front();
+            p.setLineStipple(2, 0x3F3F);
+            p.setLogicOp(GL_XOR);
+            p.drawLine(m_iXold, m_iYold, start.x(),start.y());
+            p.drawLine(m_iXnew, m_iYnew, start.x(),start.y());
+            p.resetLogicOp();
+            p.resetLineStipple();
+        }
         p.drawLine(m_iXnew, m_iYnew, m_iXold, m_iYold);
         p.end();
     }