+
+//**************************************************************
+GeomPlanePtr XGUI_Displayer::getScreenPlane() const
+{
+ GeomPlanePtr aResult;
+ Handle(AIS_InteractiveContext) aContext = AISContext();
+ if (!aContext.IsNull()) {
+ Handle(V3d_Viewer) aViewer = aContext->CurrentViewer();
+ Handle(V3d_View) aView;
+ for (aViewer->InitActiveViews(); aViewer->MoreActiveViews(); aViewer->NextActiveViews()) {
+ aView = aViewer->ActiveView();
+ break;
+ }
+ if (!aView.IsNull()) {
+ double aEyeX, aEyeY, aEyeZ;
+ aView->Eye(aEyeX, aEyeY, aEyeZ);
+
+ double aProjX, aProjY, aProjZ;
+ aView->Proj(aProjX, aProjY, aProjZ);
+
+ GeomPointPtr aPnt = GeomPointPtr(new GeomAPI_Pnt(aEyeX, aEyeY, aEyeZ));
+ GeomDirPtr aDir = GeomDirPtr(new GeomAPI_Dir(aProjX, aProjY, aProjZ));
+
+ aResult = GeomPlanePtr(new GeomAPI_Pln(aPnt, aDir));
+ }
+ }
+ return aResult;
+}
+
+double XGUI_Displayer::getViewScale() const
+{
+ Handle(AIS_InteractiveContext) aContext = AISContext();
+ if (!aContext.IsNull()) {
+ Handle(V3d_Viewer) aViewer = aContext->CurrentViewer();
+ Handle(V3d_View) aView;
+ for (aViewer->InitActiveViews(); aViewer->MoreActiveViews(); aViewer->NextActiveViews()) {
+ aView = aViewer->ActiveView();
+ break;
+ }
+ return aView->Camera()->Scale();
+ }
+ return 1;
+}