Mailing List
SUBSCRIBE
The SideFX mailing list is a great place to make contact with Houdini users. To subscribe, send us an email with no subject and the word subscribe in the body.
- First Post
- Replies
- Stats
-
Go to
- ----- 2018 -----
- April
- March
- February
- January
- ----- 2017 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2016 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2015 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2014 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2013 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2012 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2011 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2010 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2009 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2008 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2007 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2006 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2005 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2004 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2003 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2002 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2001 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2000 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 1999 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 1998 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 1997 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 1996 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 1995 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 1994 -----
- December
- November
- October
- September
- August
- July
Hi List,
I found this interesting video by chance on paper folding
http://www.vimeo.com/25096113 . Just out of sheer interest if I wanted to
approach this technique in Houdini what area of maths / vops should I be
looking into.
regards
Rob
--
Robert East
Sydney Australia
+61 (0) 299672804
"Houdini is a pipeline in a box. Maya is a box that you have to build a
pipeline for"
It's fairly simple stuff. Funnily enough I did something almost identical (also in
ICE) for a Brother job.
The procedure for doing this is as follows:
1) Transform all points into local space of the Controller object.
2) Get distance of transformed point from the x axis.
3) Use the distance as the angle parameter into the equation of a circle and use the
height of the controller object as the radius:
P = [ r sin(d), - r cos(d), z]
4) Use whatever other rotation limits and parameters you want to get the effect you're
after.
So mathematically speaking, you'd need to know how to transform a vector with the
inverse world matrix of the controller, and also know how to use the equation of a
circle.
I don't have Houdini in front of me now, otherwise I'd be able to advise you more
specifically how to implement this, but it shouldn't be too hard. For one thing, you
can avoid doing the matrix transform manually by using the Object Merge SOP to do it for
you.
Cheers,
Andy
On 1 Aug 2011, at 00:01, robert east wrote:
Hi List,
I found this interesting video by chance on paper folding
http://www.vimeo.com/25096113 . Just out of sheer interest if I wanted to
approach this technique in Houdini what area of maths / vops should I be
looking into.
regards
Rob
--
Robert East
Sydney Australia
+61 (0) 299672804
"Houdini is a pipeline in a box. Maya is a box that you have to build a
pipeline for"
_______________________________________________
Sidefx-houdini-list mailing list
Sidefx-houdini-list at sidefx.com
https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
Thanks a lot for the reply !
Kind regards
Rob
On Mon, Aug 1, 2011 at 9:31 AM, Andrew Nicholas <andy at andynicholas.com>wrote:
It's fairly simple stuff. Funnily enough I did something almost
identical
(also in ICE) for a Brother job.
The procedure for doing this is as follows:
1) Transform all points into local space of the Controller object.
2) Get distance of transformed point from the x axis.
3) Use the distance as the angle parameter into the equation of a circle
and use the height of the controller object as the radius:
P = [ r sin(d), - r cos(d), z]
4) Use whatever other rotation limits and parameters you want to get the
effect you're after.
So mathematically speaking, you'd need to know how to transform a vector
with the inverse world matrix of the controller, and also know how to use
the equation of a circle.
I don't have Houdini in front of me now, otherwise I'd be able to advise
you more specifically how to implement this, but it shouldn't be too hard.
For one thing, you can avoid doing the matrix transform manually by using
the Object Merge SOP to do it for you.
Cheers,
Andy
On 1 Aug 2011, at 00:01, robert east wrote:
> Hi List,
> I found this interesting video by chance on paper folding
> http://www.vimeo.com/25096113 . Just out of sheer interest if I wanted
to
> approach this technique in Houdini what area of maths / vops should I be
> looking into.
>
> regards
>
> Rob
>
>
> --
> Robert East
>
> Sydney Australia
> +61 (0) 299672804
> "Houdini is a pipeline in a box. Maya is a box that you have to build a
> pipeline for"
> _______________________________________________
> Sidefx-houdini-list mailing list
> Sidefx-houdini-list at sidefx.com
> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
_______________________________________________
Sidefx-houdini-list mailing list
Sidefx-houdini-list at sidefx.com
https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
--
Robert East
Sydney Australia
+61 (0) 299672804
"Houdini is a pipeline in a box. Maya is a box that you have to build a
pipeline for"