World matrix knob on a transformgeo would be zawesome, unfortunately it doesnt exist. but before we cry ourselves to sleep I did notice that it exists in the axis node, so hopefully that will work out.
thanks! On Wed, Sep 18, 2013 at 2:45 AM, Michael Garrett <[email protected]>wrote: > Normally I would say you can use the world_matrix knob of the TransformGeo > to get the concatenated position (using cels 3, 7 and 11) but it depends on > whether the geometry itself already has a baked in offset or not - meaning > is it reading in at the origin or not. > > If it's not animated and you need that offset value in world space, you > could easily snap an Axis to a vertex of the geometry that you want to be > the Camera focal point, then parent another Axis that represents the > TransformGeo and read off the concatenated transform from the child Axis > world_matrix knob. You would then use the expression Olivier posted to get > the distance. > > > On 17 September 2013 19:41, Gustaf Nilsson <[email protected]> wrote: > >> Yes, but that is not possible when you have a transformgeo-node connected >> to the geometry as there is no way (?) of getting its world coordinates. >> >> >> On Tue, Sep 17, 2013 at 6:56 PM, Olivier Lavenant < >> [email protected]> wrote: >> >>> You can use the expression : sqrt[(Xa-Xb)²+(Ya-Yb)²+(Za-Zb)²] >>> >>> >>> 2013/9/17 Gustaf Nilsson <[email protected]> >>> >>>> heya >>>> >>>> Is it possible to get the distance between the camera and an object in >>>> 3d space that has an arbitrary number of transforms below it? >>>> >>>> Thanks >>>> >>>> -- >>>> ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ >>>> >>>> _______________________________________________ >>>> Nuke-users mailing list >>>> [email protected], http://forums.thefoundry.co.uk/ >>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>> >>> >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >> >> >> >> -- >> ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > -- ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
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