[GRASS5] New NVIZ fly navigation

[Massimo Cuomo]

Hello again,

Helena Mitasova wrote:
> Massimo Cuomo wrote:
> 
>>Hello everybody.
>>
>>A new "immersive" navigation for NVIZ has been added by Markus to the
>>CVS repository.
> 
> 
> I just tried it out - it is great! Thank you very much for the
> contribution.

Thank you.

> I had only one problem - when I tried to read g3d file to see whether it
> will work with the volume data I got an error message
> id in get_drawmode is invalid.
> I will try at home on a different machine, but maybe be somebody who has 
> the slovakia3d data set installed could test it for volume data too.
> 
> Helena

I didn't have the chance to try it with volume data. As I changed 
something to the command Ndraw_all I can expect some problem, but I used 
the same functions as in draw.c eliminating only the swap buffer 
functions between the drawing of surf, vect, sites and volumes to avoid 
the flickering. Check the differences between Ndraw_all_cmd (draw.c) and 
Ndraw_all_together_cmd (togl_flythrough.c) if you want to see what has 
changed.

Please, let me know what happens with the further tests.

Massimo