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Op 30/07/2019 om 19:24 schreef Bald Eagle:
>
> Mike Horvath <mik### [at] gmailcom> wrote:
>
>> For cylinders, there was Truss Generator include by Theran Cochran.
>> Cannot find a download link anywhere however.
>
> http://www.oocities.org/ccolefax/links.html
>
>
> http://www.oocities.org/ccolefax/download/truss.zip
>
>
Careful! Malwarebytes blocked both sites here.
--
Thomas
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Op 31/07/2019 om 08:24 schreef Thomas de Groot:
> Op 30/07/2019 om 19:24 schreef Bald Eagle:
>>
>> Mike Horvath <mik### [at] gmailcom> wrote:
>>
>>> For cylinders, there was Truss Generator include by Theran Cochran.
>>> Cannot find a download link anywhere however.
>>
>> http://www.oocities.org/ccolefax/links.html
>>
>>
>> http://www.oocities.org/ccolefax/download/truss.zip
>>
>>
>
> Careful! Malwarebytes blocked both sites here.
>
To be fair, I should add this:
https://forums.malwarebytes.com/topic/224560-two-false-positives/
--
Thomas
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hi,
"Bald Eagle" <cre### [at] netscapenet> wrote:
> www.oocities.org/ccolefax/download/truss.zip
tried the included demo scene. after adding semicolons in various places to
make it work with v3.8, I now get an error:
File 'truss_c.inc' line 47: Parse Error: Domain error in atan2!
no idea why.
regards, jr.
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"jr" <cre### [at] gmailcom> wrote:
> hi,
>
> "Bald Eagle" <cre### [at] netscapenet> wrote:
> > www.oocities.org/ccolefax/download/truss.zip
>
> tried the included demo scene. after adding semicolons in various places to
> make it work with v3.8, I now get an error:
>
> File 'truss_c.inc' line 47: Parse Error: Domain error in atan2!
>
> no idea why.
>
>
> regards, jr.
That happens when both arguments are 0.
http://news.povray.org/povray.newusers/message/%3Cweb.582cd625ba97f5c181c811d20%40news.povray.org%3E/#%3Cweb.582cd625ba
97f5c181c811d20%40news.povray.org%3E
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hi,
"Bald Eagle" <cre### [at] netscapenet> wrote:
> "jr" <cre### [at] gmailcom> wrote:
> > File 'truss_c.inc' line 47: Parse Error: Domain error in atan2!
> > no idea why.
>
> That happens when both arguments are 0.
thanks for the explanation. I've added a '#debug concat' and see that the
'TG_axis' is <0,78,0> and the x and z components are used in the calculation.
what I do not understand is why. ie, I cannot believe that the archive was
posted with that bug (the file's header says version 3). has POV-Ray's handling
of the trig function(s) changed? did v3.1 allow "wrong" arguments?
regards, jr.
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"jr" <cre### [at] gmailcom> wrote:
> thanks for the explanation.
Always glad to pass along the correction of my errors.. :D
> I've added a '#debug concat' and see that the
> 'TG_axis' is <0,78,0> and the x and z components are used in the calculation.
Indeed. One of the valuable skills I've been improving on is debugging. I
stilll need TOK or clipka to whack me upside the head from time to time, but I'm
getting better.
> what I do not understand is why. ie, I cannot believe that the archive was
> posted with that bug (the file's header says version 3). has POV-Ray's handling
> of the trig function(s) changed? did v3.1 allow "wrong" arguments?
I doubt it. We're digging WAY back here, so who knows what happened. It could
have been a bad copy of v3 that was posted instead of the good one...
I haven't had a chance to run the scene / inc yet - I just dug up the link.
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"jr" <cre### [at] gmailcom> wrote:
> what I do not understand is why.
Just add
#declare Epsilon = 0.000001;
after the camera declaration, and then in the atan2 formulas add Epsilon to x.
Once all of the rest of the missing ;'s are added, the scene renders fine.
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hi,
"Bald Eagle" <cre### [at] netscapenet> wrote:
> Just add
> #declare Epsilon = 0.000001;
neat, and easy to add to the TG_axis beforehand. appreciated.
regards, jr.
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Op 01/08/2019 om 01:22 schreef Bald Eagle:
>
> "jr" <cre### [at] gmailcom> wrote:
>
>> what I do not understand is why.
>
> Just add
> #declare Epsilon = 0.000001;
>
> after the camera declaration, and then in the atan2 formulas add Epsilon to x.
> Once all of the rest of the missing ;'s are added, the scene renders fine.
>
>
Excellent! Thanks a lot.
Nice little thing to mess around with.
--
Thomas
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Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 01/08/2019 om 01:22 schreef Bald Eagle:
> >
> > "jr" <cre### [at] gmailcom> wrote:
> >
> >> what I do not understand is why.
> >
> > Just add
> > #declare Epsilon = 0.000001;
> >
> > after the camera declaration, and then in the atan2 formulas add Epsilon to x.
> > Once all of the rest of the missing ;'s are added, the scene renders fine.
> >
> >
>
> Excellent! Thanks a lot.
>
> Nice little thing to mess around with.
>
> --
> Thomas
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