Re: unified FLTK & Gnuplot printing

[Ben Abbott]

On Aug 25, 2010, at 11:53 AM, Søren Hauberg wrote:

> ons, 25 08 2010 kl. 07:04 -0700, skrev bpabbott:
>> Regarding the text over the image, I see the text on my screen. It is
>> much easier to see if I ...
>> 
>>    text (30, 30, "Hello, World", "color", "b", "fontsize", 30)
> 
> Strange. I still don't see the text on-screen. But I guess this is not
> related to printing then, but rather a rendering issue.
> 
>> Regarding the "occluded" part (new word for me!), if I understand you
>> correctly this is a feature of how the surface plot is drawn. Each
>> rectangle is actually drawn as a pair of triangles. The edges of the
>> triangles, along the rectangle's diagonal, are visible. I see the same
>> effect when I produce pdf output from Matlab (plot is attached).
> 
> Hmm, does that make it a feature then? (that's an honest question as I
> don't really know) I do find it strange that I don't see the edges on
> screen, but I see them in the figure. Generally, I think printed output
> should match the on-screen output as well as possible.
> 
>> Perhaps this is a feature of OpenGL?
> 
> That could be, but shouldn't the edges be visible on-screen as well
> then? Perhaps it's a gl2ps thing?
> 
> Søren

I don't have a satisfactory explanation for why the displayed result is 
different from the printed version, but I have assumed it is a *feature* of 
OpenGL.

Ben