+
+bool OCCViewer_Utilities::isDialogOpened( OCCViewer_ViewWindow* theView, const QString& theName )
+{
+ bool isFound = false;
+ OCCViewer_ViewFrame* aViewFrame = dynamic_cast<OCCViewer_ViewFrame*>( theView->parent()->parent() );
+ QList<QDialog*> allDialogs = aViewFrame->findChildren<QDialog*>();
+ foreach ( QDialog* d, allDialogs )
+ if ( d->objectName() == theName )
+ isFound = true;
+ return isFound;
+}
+
+bool OCCViewer_Utilities::computeVisibleBounds( const Handle(V3d_View) theView,
+ double theBounds[6] )
+{
+ bool isAny = false;
+
+ theBounds[0] = theBounds[2] = theBounds[4] = DBL_MAX;
+ theBounds[1] = theBounds[3] = theBounds[5] = -DBL_MAX;
+
+ Graphic3d_MapOfStructure aSetOfStructures;
+ theView->View()->DisplayedStructures( aSetOfStructures );
+ Graphic3d_MapIteratorOfMapOfStructure aStructureIt( aSetOfStructures );
+
+ for( ; aStructureIt.More(); aStructureIt.Next() ) {
+ const Handle(Graphic3d_Structure)& aStructure = aStructureIt.Key();
+ if ( aStructure->IsEmpty() || !aStructure->IsVisible() ||
+ aStructure->IsInfinite() || aStructure->CStructure()->IsForHighlight )
+ continue;
+ double aBounds[6];
+ Bnd_Box aBox = aStructure->MinMaxValues();
+ aBounds[0] = aBox.IsVoid() ? RealFirst() : aBox.CornerMin().X();
+ aBounds[2] = aBox.IsVoid() ? RealFirst() : aBox.CornerMin().Y();
+ aBounds[4] = aBox.IsVoid() ? RealFirst() : aBox.CornerMin().Z();
+ aBounds[1] = aBox.IsVoid() ? RealLast() : aBox.CornerMax().X();
+ aBounds[3] = aBox.IsVoid() ? RealLast() : aBox.CornerMax().Y();
+ aBounds[5] = aBox.IsVoid() ? RealLast() : aBox.CornerMax().Z();
+
+ if ( aBounds[0] > -DBL_MAX && aBounds[1] < DBL_MAX &&
+ aBounds[2] > -DBL_MAX && aBounds[3] < DBL_MAX &&
+ aBounds[4] > -DBL_MAX && aBounds[5] < DBL_MAX )
+ {
+ isAny = true;
+ for ( int i = 0; i < 5; i = i + 2 ) {
+ theBounds[i] = std::min( theBounds[i], aBounds[i] );
+ theBounds[i+1] = std::max( theBounds[i+1], aBounds[i+1] );
+ }
+ }
+ }
+ return isAny;
+}
+
+bool OCCViewer_Utilities::computeVisibleBBCenter( const Handle(V3d_View) theView,
+ double& theX, double& theY, double& theZ )
+{
+ double aBounds[6];
+ if ( !computeVisibleBounds( theView, aBounds ) )
+ {
+ // null bounding box => the center is (0,0,0)
+ theX = 0.0;
+ theY = 0.0;
+ theZ = 0.0;
+ return true;
+ }
+
+ static double aMinDistance = 1.0 / DBL_MAX;
+
+ double aLength = aBounds[1]-aBounds[0];
+ aLength = std::max( ( aBounds[3]-aBounds[2]), aLength );
+ aLength = std::max( ( aBounds[5]-aBounds[4]), aLength );
+
+ if ( aLength < aMinDistance )
+ return false;
+
+ double aWidth = sqrt( ( aBounds[1] - aBounds[0] ) * ( aBounds[1] - aBounds[0] ) +
+ ( aBounds[3] - aBounds[2] ) * ( aBounds[3] - aBounds[2] ) +
+ ( aBounds[5] - aBounds[4] ) * ( aBounds[5] - aBounds[4] ) );
+
+ if(aWidth < aMinDistance)
+ return false;
+
+ theX = (aBounds[0] + aBounds[1])/2.0;
+ theY = (aBounds[2] + aBounds[3])/2.0;
+ theZ = (aBounds[4] + aBounds[5])/2.0;
+
+ return true;
+}
+
+bool OCCViewer_Utilities::computeSceneBBCenter( const Handle(V3d_View) theView,
+ double& theX, double& theY, double& theZ )
+{
+ theX = 0, theY = 0, theZ = 0;
+ Bnd_Box aBox = theView->View()->MinMaxValues();
+ if (!aBox.IsVoid())
+ {
+ double Xmin, Ymin, Zmin, Xmax, Ymax, Zmax;
+ aBox.Get (Xmin, Ymin, Zmin, Xmax, Ymax, Zmax);
+ gp_Pnt aPnts[8] =
+ {
+ gp_Pnt (Xmin, Ymin, Zmin), gp_Pnt (Xmin, Ymin, Zmax),
+ gp_Pnt (Xmin, Ymax, Zmin), gp_Pnt (Xmin, Ymax, Zmax),
+ gp_Pnt (Xmax, Ymin, Zmin), gp_Pnt (Xmax, Ymin, Zmax),
+ gp_Pnt (Xmax, Ymax, Zmin), gp_Pnt (Xmax, Ymax, Zmax)
+ };
+
+ for (Standard_Integer i = 0; i < 8; i++)
+ {
+ const gp_Pnt& aCornPnt = aPnts[i];
+ theX += aCornPnt.X();
+ theY += aCornPnt.Y();
+ theZ += aCornPnt.Z();
+ }
+
+ theX /= 8;
+ theY /= 8;
+ theZ /= 8;
+ return true;
+ }
+ return false;
+}