Gui: allow changing scale factor in SoAutoZoomTranslation

realthunder · Feb 10, 2019 · 03a873c · 03a873c
1 parent 916985b
commit 03a873c
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/src/Gui/Inventor/SoAutoZoomTranslation.cpp b/src/Gui/Inventor/SoAutoZoomTranslation.cpp
@@ -73,16 +73,20 @@ void SoAutoZoomTranslation::initClass()
 
 float SoAutoZoomTranslation::getScaleFactor(SoAction* action) const
 {
+    float scale = scaleFactor.getValue();
+    if(!scale)
+        return 1.0;
     // Dividing by 5 seems to work well
     SbViewVolume vv = SoViewVolumeElement::get(action->getState());
     float aspectRatio = SoViewportRegionElement::get(action->getState()).getViewportAspectRatio();
-    float scale = vv.getWorldToScreenScale(SbVec3f(0.f, 0.f, 0.f), 0.1f) / (5*aspectRatio);
+    scale *= vv.getWorldToScreenScale(SbVec3f(0.f, 0.f, 0.f), 0.1f) / (5*aspectRatio);
     return scale;
 }
 
 SoAutoZoomTranslation::SoAutoZoomTranslation()
 {
     SO_NODE_CONSTRUCTOR(SoAutoZoomTranslation);
+    SO_NODE_ADD_FIELD(scaleFactor, (1.0f));
     //SO_NODE_ADD_FIELD(abPos, (SbVec3f(0.f,0.f,0.f)));
 }
 

diff --git a/src/Gui/Inventor/SoAutoZoomTranslation.h b/src/Gui/Inventor/SoAutoZoomTranslation.h
@@ -39,6 +39,8 @@ class GuiExport SoAutoZoomTranslation : public SoTransformation  {
     SoAutoZoomTranslation();
     //SoSFVec3f abPos;
 
+    SoSFFloat scaleFactor;
+
 protected:
     virtual ~SoAutoZoomTranslation() {};
     virtual void doAction(SoAction * action);