[vtkusers] vtk-Macros

[Steffen Oeltze]

Zitiere "Koning, P.J.H. de (LKEB)" <P.J.H.de_Koning at lumc.nl>:

> 04/11/2002 15:26:32, Steffen Oeltze
> <Steffen.Oeltze at Student.Uni-Magdeburg.DE> wrote:
> 
> >Zitiere "Koning, P.J.H. de (LKEB)" <P.J.H.de_Koning at lumc.nl>:
> >
> >> 04/11/2002 15:12:02, Steffen Oeltze
> >> <Steffen.Oeltze at Student.Uni-Magdeburg.DE> wrote:
> >> 
> >> vtkSetGet.h
> >
> >Thanks for your fast response. Unfortunately, I'm not a C-expert and I
> have no 
> >idea what the following code does. How is the cursor position set by
> this 
> >snippet of code ?
> >
> It provides interfaces to the data called CursorPosition, which is
> defined in vtkImageCursor3D.h. Those functions are called
> SetCursorPosition(float x, float y, float z) and 
> SetCursorPosition(float xyz[3]). There is also a vtkGetVector3Macro
> which provides functions to retrieve the values.

Thanks again. My problem is that I would like to connect the position of the 
mouse to the SetCursorPosition(x,y,z)-method in an image viewer. My images are 
of the size 256x256. When I try to retrieve the mouse position I get display
coordinates instead of pixel coordinates. However, when I call the 
SetCursorPosition(x,y,z)-procedure manually the cursor is set to the correct 
pixel although the display coordinates would be somewhere else. I would just 
like to copy this behaviour.


> 
> >#define vtkSetVector3Macro(name,type) \
> >virtual void Set##name (type _arg1, type _arg2, type _arg3) \
> >  { \
> >  vtkDebugMacro(<< this->GetClassName() << " (" << this << "): setting
> " << 
> >#name " to (" << _arg1 << "," << _arg2 << "," << _arg3 << ")"); \
> >  if ((this->name[0] != _arg1)||(this->name[1] !=
> _arg2)||(this->name[2] != 
> >_arg3)) \
> >    { \
> >    this->name[0] = _arg1; \
> >    this->name[1] = _arg2; \
> >    this->name[2] = _arg3; \
> >    this->Modified(); \
> >    } \
> >  }; \
> >virtual void Set##name (type _arg[3]) \
> >  { \
> >  this->Set##name (_arg[0], _arg[1], _arg[2]);\
> >  } 
> >
> >
> >> 
> >> >Hi,
> >> >
> >> >I'm using a vtkImageCursor3D and recently I tried to figure out
> how
> >> the
> >> >vtkImageCursor3D->SetCursorPosition() procedure works. The only
> thing
> >> I
> >> >discovered was a macro called vtkSetVector3Macro(name, type). Does
> >> anybody
> >> >know where to find the definition of this macro ?
> >> >
> >> >Steffen Oeltze
> >> >_______________________________________________
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> >> 
> >> 
> >> 
> >
> 
> 
>