For all issues regarding the Forums use, please, refer to the Forum Rules.

Our Solutions

Need professional assistance?
Consider our:

Support Offerings

 

Need to speed up your development?
Have a look at our:

Samples & Tools

 

Need some functionality extending standard OCCT capabilities?
Check out our:

Adv. Components

New to OpenCascade, can't project to screen

Travers Biddle's picture
Forums: 

Hi, I'm new to OpenCASCADE and currently woking through the bottle tutorial.

I can't figure out how to actually display the image to the screen.

I'm familiar with OpenGL but this has got me stumped and I can't find any resources specifically dealing with this.

Any help would be greatly appreciated.

Travers Biddle's picture

Okay, I solved it. It was just much more involved than I originally thought.

For future generations coming across this post here's what I did for a standard MFC SDI program:

In the C**App class header file add these:

Handle_Graphic3d_WNTGraphicDevice GetGraphicDevice() const { return myGraphicDevice; } ;
Handle_Graphic3d_WNTGraphicDevice myGraphicDevice;

------------------------------------------------------------------
In the C*App cpp add this to the constructor:

try
{myGraphicDevice = new Graphic3d_WNTGraphicDevice();}
catch(Standard_Failure)
{
AfxMessageBox(L"Fatal error during graphic initialization",MB_ICONSTOP);
ExitProcess(1);
}

------------------------------------------------------------------
In C**Doc.h add these:

Handle_V3d_Viewer GetViewer() { return myViewer; };
Handle_V3d_Viewer myViewer;
Handle_AIS_InteractiveContext myAISContext;

------------------------------------------------------------------
In C**Doc.cpp add these to the constructor:

Handle(Graphic3d_WNTGraphicDevice) theGraphicDevice = ((COCCTestApp*)AfxGetApp())->GetGraphicDevice();
myViewer = new V3d_Viewer(theGraphicDevice,(short *) "Visu3D");
myViewer->SetDefaultLights();
myViewer->SetLightOn();
myAISContext =new AIS_InteractiveContext(myViewer);

------------------------------------------------------------------
In C**View.h add this to the class:

Handle_V3d_View myView;

------------------------------------------------------------------
In C**View.cpp:
OnInitialUpdate:

myView = GetDocument()->GetViewer()->CreateView();
Handle(Graphic3d_WNTGraphicDevice) theGraphicDevice = ((COCCTestApp*)AfxGetApp())->GetGraphicDevice();
Handle(WNT_Window) aWNTWindow = new WNT_Window(theGraphicDevice,GetSafeHwnd ());
myView->SetWindow(aWNTWindow);
if (!aWNTWindow->IsMapped()){

aWNTWindow->Map();
}

after constructing the bottle, add this in OnDraw:

Handle(V3d_Viewer)aViewer = GetDocument()->GetViewer();
Handle(AIS_InteractiveContext)aContext;
aContext = new AIS_InteractiveContext(aViewer);

Handle(AIS_Shape) aisthing=new AIS_Shape(aRes);
aContext->SetDisplayMode(ais2,AIS_Shaded);
aContext->Display(aisthing);

------------------------------------------------------------------
I'm still new at this so the above could be a terrible way of doing it, but it kind of works

aka's picture

A thousand thanks!!!