Re: Bug in image code ?

[Daniel J S. <dan...@ie...>]

Ga=EBl Varoquaux wrote:
>     Povray terminal has :
> #define POVRAY_XMAX (4096)
> #define POVRAY_YMAX (4096)
>=20
> and=20
> #define POVRAY_HCHAR (POVRAY_XMAX/60)
>=20
>     And, as a comparison, postscript terminal has :
> #define PS_XMAX (10*720)
>=20
> #define PS_HCHAR (14*PS_SC*6/10)
>=20
> where PS_SC is given by :
> #define PS_SC 10
>=20
> So t->xmax =3D 4096 for povray, 7200 for postscript,
>    t->h_char ~ 68 for povray, 84 for postscript.

These numbers don't look unreasonable, I guess.

>     I don't see any obvious difference, but I think I have missed your
> point. I don't really understand where axis_array[axis].term_lower come=
s
> from, and what it is supposed to be.

All I'm saying is use a printf(...) or fprintf(stdout,...) to print out t=
he values to perhaps pinpoint where the negative number is occurring.  (W=
hich you did.)  Is POV-Ray v3.7.beta.8 on the web page http://www.povray.=
org/ what we are talking about to utilize the povray patch?  (Could you p=
ut the patch on the SourceForge page?)

Dan