[vtk-developers] vtkVectorText beyond ASCII - solution
master at iaas.msu.ru
Sat Dec 29 02:49:22 EST 2007
I have enquired on this list (vtkusers) about the sore state of
non-ASCII text support in VTK and got no reaction:
> are there anywhere around any patches to VTK to get more characters in
> vtkVectorText (say Cyrillic)?
Thus I did some coding myself and got a vtkVectorText "on steroids",
that can display Cyryllic, Greek and some math (a STIX font was used).
You can see the results at
If anyone is interested I will put the code in minimal-decency state and
post it here/put it there too.
As of now I did not change API or logic in any way,
font was converted offline and the text to show is just assumed to be in UTF-8.
> On the other hand, VTK uses FTGL intenally to render bitmap fonts on the
> screen. But FTGL can make polygon fonts too.
> It must be easy enough to hack FTGL to make a polygon set
> for VTK, instead of feeding triangles to OpenGL directly.
And I have done that easy part. But now I lack both motivation and
expertise to go any deeper into VTK to try on-the-fly rendering.
My search over archives suggests that text handling is some
untouchable mess and I was plain lucky that vtkVectorText was left
neglected by developers, making enhancing it a one-step process.
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