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In article <3a65a971@news.povray.org>, Warp <war### [at] tag povrayorg>
wrote:
> CASE (OBJECT_ID_TOKEN)
> Object = Token.Data;
> END_CASE
I don't have the source code open right now, but if the object data
sticks around past the parse stage, this will be a problem. You should
probably use Parse_Object(), as Ron said...then just delete it when you
aren't using it any more.
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Ron Parker <ron### [at] povrayorg> wrote:
: Call Parse_Object, which will return a pointer to an OBJECT or NULL if
: one wasn't found.
Ok, thanks. That's exactly it.
: Remember to free up the object when you're done with it (even if it was
: an object ID; Parse_Object makes a copy.)
Hmm... How is it freed? Just POV_FREE(Object)?
--
char*i="b[7FK@`3NB6>B:b3O6>:B:b3O6><`3:;8:6f733:>::b?7B>:>^B>C73;S1";
main(_,c,m){for(m=32;c=*i++-49;c&m?puts(""):m)for(_=(
c/4)&7;putchar(m),_--?m:(_=(1<<(c&3))-1,(m^=3)&3););} /*- Warp -*/
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Wlodzimierz ABX Skiba <abx### [at] abxartpl> wrote:
: btw: is there automatic inheriting of parameters such like texture, no_shadow,
: etc.?
: I mean in tesselation patch.
The tesselation patch makes a Parse_Object_Mods((OBJECT*)tesselationMesh)
after creating the mesh.
I don't know if that's what you mean.
--
char*i="b[7FK@`3NB6>B:b3O6>:B:b3O6><`3:;8:6f733:>::b?7B>:>^B>C73;S1";
main(_,c,m){for(m=32;c=*i++-49;c&m?puts(""):m)for(_=(
c/4)&7;putchar(m),_--?m:(_=(1<<(c&3))-1,(m^=3)&3););} /*- Warp -*/
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On 17 Jan 2001 10:07:50 -0500, Warp wrote:
>Ron Parker <ron### [at] povrayorg> wrote:
>: Remember to free up the object when you're done with it (even if it was
>: an object ID; Parse_Object makes a copy.)
>
> Hmm... How is it freed? Just POV_FREE(Object)?
Destroy_Object. See objects.c for parameters.
--
Ron Parker http://www2.fwi.com/~parkerr/traces.html
My opinions. Mine. Not anyone else's.
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I have run into one problem. I get a:
error: Attempt to malloc zero size block (File: parse.c Line: 4385).
This line is inside the Parse_Mesh() function and is the following:
Object->Data->UVCoords = (UV_VECT *)POV_MALLOC(number_of_uvcoords*sizeof(UV_VECT),
"triangle mesh data");
It unconditionally allocates space for uv-coordinates even if
number_of_uvcoords is 0 (as it is in my case where I only create triangles
with the tesselation function).
Shouldn't it be enclosed in an if(number_of_uvcoords)?
Will I break something if I add that condition?
Why it doesn't crash with regular meshes (without uv-coordinates)?
--
char*i="b[7FK@`3NB6>B:b3O6>:B:b3O6><`3:;8:6f733:>::b?7B>:>^B>C73;S1";
main(_,c,m){for(m=32;c=*i++-49;c&m?puts(""):m)for(_=(
c/4)&7;putchar(m),_--?m:(_=(1<<(c&3))-1,(m^=3)&3););} /*- Warp -*/
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Warp <war### [at] tagpovrayorg> wrote:
: Will I break something if I add that condition?
Probably. I get a bus error, core dumped when I try to render a
tesselated mesh created this way (povray crashes when the rendering
process reaches the mesh).
There's probably something with that uv-coord info that I don't take
into account. What is it?
--
char*i="b[7FK@`3NB6>B:b3O6>:B:b3O6><`3:;8:6f733:>::b?7B>:>^B>C73;S1";
main(_,c,m){for(m=32;c=*i++-49;c&m?puts(""):m)for(_=(
c/4)&7;putchar(m),_--?m:(_=(1<<(c&3))-1,(m^=3)&3););} /*- Warp -*/
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On 17 Jan 2001 10:30:28 -0500, Warp wrote:
> Shouldn't it be enclosed in an if(number_of_uvcoords)?
> Will I break something if I add that condition?
This sounds like a question for p.u.p.
--
Ron Parker http://www2.fwi.com/~parkerr/traces.html
My opinions. Mine. Not anyone else's.
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In article <3a65b58a@news.povray.org>, Warp <war### [at] tagpovrayorg>
wrote:
> The tesselation patch makes a
> Parse_Object_Mods((OBJECT*)tesselationMesh)
> after creating the mesh.
> I don't know if that's what you mean.
I think he is asking if the tesselated mesh will "inherit" the texture
and other attributes of the original object. Something to think about,
but I think it is sufficient to only do the geometry.
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Warp wrote in message <3a65b58a@news.povray.org>...
>Wlodzimierz ABX Skiba <abx### [at] abxartpl> wrote:
>: btw: is there automatic inheriting of parameters such like texture,
no_shadow,
>: etc.?
>: I mean in tesselation patch.
>
> The tesselation patch makes a Parse_Object_Mods((OBJECT*)tesselationMesh)
>after creating the mesh.
> I don't know if that's what you mean.
I mean that when you generate complicated csg with texturing for every component
and want tesselate it you must rebuild complicated texturing, right ? What about
calculating all parameters of texture at vertex and generate textured triangles
?
ABX
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Warp wrote in message <3a65ba93@news.povray.org>...
> I have run into one problem. I get a:
>
>error: Attempt to malloc zero size block (File: parse.c Line: 4385).
>
> Shouldn't it be enclosed in an if(number_of_uvcoords)?
> Will I break something if I add that condition?
probaly you should write something like
if (number_of_uvcoords>0)
{
Object->Data->UVCoords = (UV_VECT
*)POV_MALLOC(number_of_uvcoords*sizeof(UV_VECT), "triangle mesh data");
}
else
{
Object->Data->UVCoords = NULL;
}
and check all places where Object->Data->UVCoords is used
to avoid refferencing arrays at NULL pointer
for example at POV_FREE for this pointer
ABX
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