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Darren New wrote:
> stbenge wrote:
>> method for 3D line/plane intersection,
>
> I thought a cheat-sheet kind of thing for this sort of basic geometric
> equations would be handy. A book that goes into the basics of the
> geometric math in a way that's easy to look things up, for (say)
> inside/outside calcs, intersections of various simple shapes,
> calculating angles in various situations, and so on.
That would be nice. I'm making sure to chronicle certain discoveries for
future reference. This last problem involved placing an arc of the right
radius and angle into an Isosceles triangle so that both the end points
of the arc and points B and C of the triangle would meet. Simple math
wasn't cutting it, and I ended up sketching out a diagram to find a way
to arrive at the correct solution.
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"stbenge" <myu### [at] hotmail com> schreef in bericht
news:4c3ff1fb@news.povray.org...
> Darren New wrote:
>> stbenge wrote:
>>> method for 3D line/plane intersection,
>>
>> I thought a cheat-sheet kind of thing for this sort of basic geometric
>> equations would be handy. A book that goes into the basics of the
>> geometric math in a way that's easy to look things up, for (say)
>> inside/outside calcs, intersections of various simple shapes, calculating
>> angles in various situations, and so on.
>
> That would be nice. I'm making sure to chronicle certain discoveries for
> future reference. This last problem involved placing an arc of the right
> radius and angle into an Isosceles triangle so that both the end points of
> the arc and points B and C of the triangle would meet. Simple math wasn't
> cutting it, and I ended up sketching out a diagram to find a way to arrive
> at the correct solution.
>
Not sure if this will help you, but have you tried Friedrich Lohmueller's
insert menu add-ons? You can find them (with other goodies) at:
http://www.f-lohmueller.de/pov_tut/pov__eng.htm
Thomas
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Thomas de Groot wrote:
> "stbenge" <myu### [at] hotmailcom> schreef in bericht
> news:4c3ff1fb@news.povray.org...
>> Darren New wrote:
>>> stbenge wrote:
>>>> method for 3D line/plane intersection,
>>> I thought a cheat-sheet kind of thing for this sort of basic geometric
>>> equations would be handy. A book that goes into the basics of the
>>> geometric math in a way that's easy to look things up, for (say)
>>> inside/outside calcs, intersections of various simple shapes, calculating
>>> angles in various situations, and so on.
>> That would be nice. I'm making sure to chronicle certain discoveries for
>> future reference. This last problem involved placing an arc of the right
>> radius and angle into an Isosceles triangle so that both the end points of
>> the arc and points B and C of the triangle would meet. Simple math wasn't
>> cutting it, and I ended up sketching out a diagram to find a way to arrive
>> at the correct solution.
>>
>
> Not sure if this will help you, but have you tried Friedrich Lohmueller's
> insert menu add-ons? You can find them (with other goodies) at:
> http://www.f-lohmueller.de/pov_tut/pov__eng.htm
He's got an analytical geometry section, which is what I'm into now.
Thanks for showing me this :)
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"stbenge" <myu### [at] hotmailcom> schreef in bericht
news:4c40935f$1@news.povray.org...
> He's got an analytical geometry section, which is what I'm into now.
> Thanks for showing me this :)
Glad to be of help. :-)
It was precisely the Analytical Geometry that prompted me to ask.
Thomas
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From: Shay
Subject: Re: rounded_lsweep, an object macro
Date: 5 Aug 2010 10:07:46
Message: <4C5AC653.3000807@n.n>
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On 07/14/2010 10:37 AM, stbenge wrote:
>
> Can you think of a better name than "rounded_lsweep"?
BITD, I called mine, which worked a bit differently than yours,
"cheap_sweep."
Ron Parker had another, which worked differently that either of ours,
called TorSpline. Don't know if Tor is an acronym for some mathematical
concept or a reference to Tor Olav, who's a bit of a "mathematical
concept" himself.
-Shay
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Am 05.08.2010 16:10, schrieb Shay:
> Ron Parker had another, which worked differently that either of ours,
> called TorSpline. Don't know if Tor is an acronym for some mathematical
> concept or a reference to Tor Olav, who's a bit of a "mathematical
> concept" himself.
Short for torus/toroidal, I'd guess.
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"Shay" <n@n.n> schreef in bericht news:4C5AC653.3000807@n.n...
> Ron Parker had another, which worked differently that either of ours,
> called TorSpline. Don't know if Tor is an acronym for some mathematical
> concept or a reference to Tor Olav, who's a bit of a "mathematical
> concept" himself.
"This macro is used to create a smooth spline of toruses connecting
a sequence of points."
// Date: 7/17/1998
// Auth: Ronald L. Parker
Thomas
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Shay wrote:
> On 07/14/2010 10:37 AM, stbenge wrote:
>>
>> Can you think of a better name than "rounded_lsweep"?
>
> BITD, I called mine, which worked a bit differently than yours,
> "cheap_sweep."
>
> Ron Parker had another, which worked differently that either of ours,
> called TorSpline.
My googling skills must be slipping... I could find neither of those
before making my own :(
> Don't know if Tor is an acronym for some mathematical
> concept or a reference to Tor Olav, who's a bit of a "mathematical
> concept" himself.
>
> -Shay
lol
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Thomas de Groot wrote:
> "Shay" <n@n.n> schreef in bericht news:4C5AC653.3000807@n.n...
>> Ron Parker had another, which worked differently that either of ours,
>> called TorSpline. Don't know if Tor is an acronym for some mathematical
>> concept or a reference to Tor Olav, who's a bit of a "mathematical
>> concept" himself.
>
> "This macro is used to create a smooth spline of toruses connecting
> a sequence of points."
> // Date: 7/17/1998
> // Auth: Ronald L. Parker
Hmm, I'll try to find that.
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On 08/06/2010 02:39 AM, clipka wrote:
> Am 05.08.2010 16:10, schrieb Shay:
>
>> Ron Parker had another, which worked differently that either of ours,
>> called TorSpline. Don't know if Tor is an acronym for some mathematical
>> concept or a reference to Tor Olav, who's a bit of a "mathematical
>> concept" himself.
>
> Short for torus/toroidal, I'd guess.
doh! I guess 8 years wasn't long enough for me to figure that one out
for myself. :)
-Shay
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