pyopengl-users

[PyOpenGL-Users] Exporting 3D extruded text to an OBJ file

[David M. <dvm...@gm...>]

I would like to be able to export a string of 3D extruded text as an OBJ or
similar 3D file format, and I can't find any examples on the internet.

I have played around with the solid_font.py demo in the OpenGLContext/tests/
folder, which uses FontTools to display the text, but I don't know how to
get that mesh data back out.

Any ideas would be greatly appreciated, thanks,

-- 
Dave Morris

Re: [PyOpenGL-Users] Exporting 3D extruded text to an OBJ file

[Ian M. <geo...@gm...>]

Blender can make 3D fonts, and has a .obj exporter.

Re: [PyOpenGL-Users] Exporting 3D extruded text to an OBJ file

[David M. <dvm...@gm...>]

I would like to be able to do it programmatically without having to go into
Blender.

Dave

On Mon, Jan 11, 2010 at 5:13 PM, Ian Mallett <geo...@gm...> wrote:

> Blender can make 3D fonts, and has a .obj exporter.
>



-- 
Dave Morris
http://dave.showviz.net/
http://3dcamphouston.com/

Re: [PyOpenGL-Users] Exporting 3D extruded text to an OBJ file

[Mike C. F. <mcf...@vr...>]

David Morris wrote:
> I would like to be able to export a string of 3D extruded text as an
> OBJ or similar 3D file format, and I can't find any examples on the
> internet.
>
> I have played around with the solid_font.py demo in the
> OpenGLContext/tests/ folder, which uses FontTools to display the text,
> but I don't know how to get that mesh data back out.
It's not really set up to make it easy to get out.  Each glyph that's
created has contour and outline arrays, which are extracted by
ttfquery.glyph.Glyph, but the advances and the like are all done at the
Font level (OpenGLContext.scenegraph.text._fonttools and
OpenGLContext.scenegraph.text.fonttools), without those you'd just have
characters showing up piled on top of each other.  That said, there's
only maybe 1000 lines of code in all three modules, so if you want to
extract the pieces you need you could likely do it in a few hours.  The
obscure stuff is all over in ttfquery, the stuff in OpenGLContext just
takes the contours for each glyph and figures out how to render them
based on a VRML97 font description.

Good luck,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com

Re: [PyOpenGL-Users] Exporting 3D extruded text to an OBJ file

[David M. <dvm...@gm...>]

Thanks, I will definitely check that out. I appreciate your help, and I'll
let you know if I have any other questions after I dig a little deeper into
fonttools.

Dave

On Wed, Jan 13, 2010 at 1:37 PM, Mike C. Fletcher <mcf...@vr...>wrote:

> David Morris wrote:
> > I would like to be able to export a string of 3D extruded text as an
> > OBJ or similar 3D file format, and I can't find any examples on the
> > internet.
> >
> > I have played around with the solid_font.py demo in the
> > OpenGLContext/tests/ folder, which uses FontTools to display the text,
> > but I don't know how to get that mesh data back out.
> It's not really set up to make it easy to get out.  Each glyph that's
> created has contour and outline arrays, which are extracted by
> ttfquery.glyph.Glyph, but the advances and the like are all done at the
> Font level (OpenGLContext.scenegraph.text._fonttools and
> OpenGLContext.scenegraph.text.fonttools), without those you'd just have
> characters showing up piled on top of each other.  That said, there's
> only maybe 1000 lines of code in all three modules, so if you want to
> extract the pieces you need you could likely do it in a few hours.  The
> obscure stuff is all over in ttfquery, the stuff in OpenGLContext just
> takes the contours for each glyph and figures out how to render them
> based on a VRML97 font description.
>
> Good luck,
> Mike
>
> --
> ________________________________________________
>  Mike C. Fletcher
>  Designer, VR Plumber, Coder
>  http://www.vrplumber.com
>  http://blog.vrplumber.com
>
>


-- 
Dave Morris
http://dave.showviz.net/
http://3dcamphouston.com/