 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
the following scene
#include "math.inc"
#declare r=1;
#declare d=0.1;
#declare ridges=24;
isosurface{
function{ sqrt(x*x+y*y)-r - (cos(atan(y/x)*ridges)*d) }
threshold 0
max_gradient 2
contained_by {box{<-1,-1,0>, <1,1,1>}}
texture{pigment{color rgb 1 transmit 0.5}}
}
gives the following error
File: C:\Data\3D\bumpycyl.inc Line: 5
Fatal Error: Floating-point exception detected in function ''. Your
function either attempted a division by zero, used a function outside
its domain or called an internal function with invalid parameters.
but only if antialiasing is turned on, and then not at all camera angles.
--
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Thu, 27 Jan 2005 14:24:57 -0500, Tim Cook <z99### [at] bellsouth net> wrote:
> #include "math.inc"
> #declare r=1;
> #declare d=0.1;
> #declare ridges=24;
> isosurface{
> function{ sqrt(x*x+y*y)-r - (cos(atan(y/x)*ridges)*d) }
> threshold 0
> max_gradient 2
> contained_by {box{<-1,-1,0>, <1,1,1>}}
> texture{pigment{color rgb 1 transmit 0.5}}
> }
>
> gives the following error
>
> File: C:\Data\3D\bumpycyl.inc Line: 5
> Fatal Error: Floating-point exception detected in function ''. Your
> function either attempted a division by zero, used a function outside
> its domain or called an internal function with invalid parameters.
Some answers I can imagine are:
1) you have librarypath set with some math.inc different than the one from
POV-Ray
2) you have some ini setting which cause inclusion of other file (+HI)
3) memory corruption
try to exclude any of them to find real problem.
> but only if antialiasing is turned on, and then not at all camera angles.
Can you duplicate this exactly the same after rest(art) of your computer?
ABX
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Tim Cook wrote:
| function{ sqrt(x*x+y*y)-r - (cos(atan(y/x)*ridges)*d) }
~ ^^^
I'm guessing that at some camera angles you'll have a ray where POV
attempts to evaluate the function for x==0 which will produce the error.
When using AA, you shoot more rays which increases the probability
that one will encounter the problem, but it should be possible to
find a camera position that will cause it too...
Jerome
- --
******************************
* Jerome M. Berger *
* mailto:jbe### [at] ifrancecom *
* http://jeberger.free.fr/ *
******************************
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
iD8DBQFB+VUfqIYJdJhyixIRAsp3AKCMQpQsiJqoQ/lGOCxGeTPXx2taNACeMeSn
QNloxYof/t1iEwKEWIXaPwc=
=gaJ4
-----END PGP SIGNATURE-----
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> | function{ sqrt(x*x+y*y)-r - (cos(atan(y/x)*ridges)*d) }
> ~ ^^^
You can try replacing atan(y/x) by atan2(y,x) which avoids the division by
zero and also avoids the problem that 1/2 is equal to -1/-2 and thereby
gives more useful results for all values of x and y.
- Slime
[ http://www.slimeland.com/ ]
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Slime wrote:
> You can try replacing atan(y/x) by atan2(y,x) which avoids the division by
> zero and also avoids the problem that 1/2 is equal to -1/-2 and thereby
> gives more useful results for all values of x and y.
Whee, that fixed it. Thanks!
--
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On Thu, 27 Jan 2005 20:54:46 +0100, ABX <abx### [at] abxartpl> wrote:
> > File: C:\Data\3D\bumpycyl.inc Line: 5
> > Fatal Error: Floating-point exception detected in function ''. Your
> > function either attempted a division by zero, used a function outside
> > its domain or called an internal function with invalid parameters.
>
> Some answers I can imagine are
Oups. Forget my guessing. I'm so used to the ".pov" extension of the rendered
scene that I was mistaken by ".inc" that you refering inclusion of unknown
file and did not carefully readed rest of the message. Of course others were
smarter than me.
ABX
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
I like this
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
