quite interesting discussion. Thanks dan for the detailed explaination
On 2/9/12, Adam Hazard <ahaz...@tippett.com> wrote: > This is the only suggestion I tried, because it seemed the easiest to > implement, and so far it looks like it is working. thank you very much. > > > -Adam > > Colin Alway wrote: >> is this what you want ? >> >> inputs: >> a 2d pivot point >> a 2d reference point >> a rotation slider >> >> output: >> a 2d point rotating the reference around the pivot >> >> an expression for the destination point would be (pseudo-code): >> >> output.x = pivot.x + (reference.x - pivot.x) * cos( rotation ) - >> (reference.y - pivot.y) * sin( rotation ) >> output.y = pivot.y + (reference.x - pivot.x) * sin( rotation ) + >> (reference.y - pivot.y) * cos( rotation ) >> >> >> >> >> On 9 February 2012 02:01, Adam Hazard <ahaz...@tippett.com >> <mailto:ahaz...@tippett.com>> wrote: >> >> Anyone know how to have a rotation slider control a 2d point >> rotating around another 2d point with an expression? >> >> Basically I want to know how the tracker derives rotation from 2 >> points, but I guess in reverse. >> >> Or a way to hack this together by linking parameters. I haven't >> found a solution. >> >> Thanks in advance >> >> -Adam >> _______________________________________________ >> Nuke-users mailing list >> Nuke-users@support.thefoundry.co.uk >> <mailto:Nuke-users@support.thefoundry.co.uk>, >> http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> >> >> >> -- >> colin alway >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Nuke-users mailing list >> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > _______________________________________________ Nuke-users mailing list Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
