Wed, 03/18/2009 - 00:03
hi
my ocaf app contain four view front,top,side and an axo view
i want to draw a text caption in each view telling witch view iam in
so there is my code:
void CMfcCADView::OnDraw(CDC* pDC)
{
CRect aRect;
GetClientRect(&aRect);
if(myWidth != aRect.Width() || myHeight != aRect.Height())
{
myWidth = aRect.Width();
myHeight = aRect.Height();
::PostMessage ( GetSafeHwnd () , WM_SIZE , SW_SHOW , myWidth + myHeight*65536 );
}
myLayer=new Visual3d_Layer(myView->Viewer()->Viewer(),
Aspect_TOL_OVERLAY, Standard_False);
myLayer->SetViewport(myWidth,myHeight);
myLayer->SetOrtho(0,myWidth,myWidth,0,(Aspect_TypeOfConstraint)-1);
myLayer->Clear();
myLayer->Begin();
myLayer->SetTextAttributes(Graphic3d_NOF_ASCII_SIMPLEX,
Aspect_TODT_NORMAL,Quantity_Color(Quantity_NOC_WHITE));
myLayer->DrawText(aText,(float)rect.left + 10.,(float)rect.top + 10.,20.);
myLayer->End();
myView->Redraw();
}
but when i resize a view the text change its position
please can anyone tell me how fix this
or suggest me another methode
thank an advance
Wed, 03/18/2009 - 09:51
The problem is that the parameters you give to SetOrtho are not kept the way you pass them. Basically, the parameters are re-calculated to guarantee a 1:1 pixel aspect ratio everytime.
Check this thread for more information: http://www.opencascade.org/org/forum/thread_10090/
Thu, 03/19/2009 - 15:30
thanks in your replay
my second problem is
the text caption dont changed when switch between view type
i do it like that :
void CMfcCADView::OnBUTTONFront()
{
myView->SetProj(V3d_Yneg);
aText="Front";
}
but the Visual3d_Layer cant update the text captions
any help please
Fri, 03/20/2009 - 09:35
Are you sure OnDraw is being called right after modifying aText? I use layers to display arrows, and they are correctly updated once I change the view. You may want to force the re-calculation of the layer right after setting the projection.