[vtkusers] Float to Int

[Patrícia Gonçalves]

I'm not familiar with Tcl and I don't know if it has a Round method, but you can make one yourself:
  float j = (number);
  int i = j;        // making i equal to the floor of (number)
  if (j-i>=0.5) i=i+1;
Hope to have been of help!


 

  ----- Original Message ----- 
  From: Ali 
  To: Patrícia Gonçalves 
  Sent: Tuesday, July 18, 2006 7:33 PM
  Subject: Re: [vtkusers] Float to Int


  Hi, i'm using tcl/tk and not C++.  I'm fairly new to tcl/tk, do you know 
  the syntax?

  Thanks.

  Patrícia Gonçalves wrote:

  > Hi!
  >  
  > I'm not sure I understood your problem...
  >  
  > I imagine you have something like this:
  >
  >     float j = 0.8983f;
  >     int i = (int)j;
  >
  > making i=0.
  >  
  > If you're using .NET you can use the Math::Round method:
  >
  >     float j = 0.8983f;
  >     int i = (int)Math::Round(j);
  >
  > making i=1.
  >  
  > Hope this helps!
  > <http://www.inegi.up.pt>
  >
  >
  >
  >     ----- Original Message -----
  >     *From:* Ali Calvert <mailto:fcukered at gmail.com>
  >     *To:* vtkusers at vtk.org <mailto:vtkusers at vtk.org>
  >     *Sent:* Tuesday, July 18, 2006 5:33 PM
  >     *Subject:* [vtkusers] Float to Int
  >
  >     Hi all, i'm having a bit of difficulty converting my texture
  >     coordinates (as a float from 0 -> 1) to a coordinate (as an
  >     integer from 0 - > size of image)  My current method simply floors
  >     the float, i.e. 0.8983 would be a 0, however this isn't very
  >     accurate as it should be a 1.
  >      
  >     Can anybody help me please?
  >      
  >     Also if there is a better way of doing this rather than rounding,
  >     i would appreciate any comments.
  >      
  >     Thank you for your time.
  >

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