Cool I will try that thanks a lot!
2013/3/29 Andy Moorer <andymoo...@gmail.com> > You then need a "distance to plane" calculation... the distance from the > camera to null is the hypotenuse of a right triangle. The angle of that > line versus the z axis of the camera then gives you enough information to > determine the distance to the camera plane the null is on. > > cos(theta)=a/h where you want the length of the adjacent side (a)... > > So the value you seek is cos(angle)*distance to null. > > > > > On Fri, Mar 29, 2013 at 3:38 AM, Emilio Hernandez <emi...@e-roja.com>wrote: > >> Yes it's working with the null centered. But what if I want the focus on >> some moving object that is not always in the center of the camera and >> coming near? It is like a follow focus rig. >> >> >> >> >> 2013/3/29 Ben Davis <benjamincliffordda...@gmail.com> >> >>> Makes sense, thanks Tim! >>> >>> That means that the info from the "Distance to Output Camera" is doing >>> exactly what you need Emilio, since when centered the ICETree info matches >>> perfectly. >>> >>> -- >>> Ben Davis >>> >>> www.moondog-animation.com >>> >>> +33 6 88 48 54 50 >>> >>> >>> On Fri, Mar 29, 2013 at 10:31 AM, Tim Leydecker <bauero...@gmx.de>wrote: >>> >>>> Hey Ben, >>>> >>>> the farther offset the null is off center to the center of the camera >>>> view >>>> the more "off" the DOF would be because the DOF effect is sets in >>>> respect >>>> to the viewplane of the camera and it would take some Pythagorean >>>> theorem >>>> (http://en.wikipedia.org/wiki/**Hypotenuse<http://en.wikipedia.org/wiki/Hypotenuse>) >>>> to get the desired major cathetus, >>>> which is the Distance between Camera Center and a "Plane" from the >>>> shorter >>>> cathetus. >>>> >>>> To avoid that, itæ„€ easier to constraint the camera to "look at" the >>>> null, >>>> then the hypothenuse "snaps back into" the longer cathetus and there is >>>> no offset anymore to worry about. >>>> >>>> Cheers, >>>> >>>> tim >>>> >>>> >>>> On 29.03.2013 10:06, Ben Davis wrote: >>>> >>>>> It looks like "Distance to Output Camera" from the viewport options is >>>>> spitting out the info from a plane in front of the camera based on the >>>>> distance from the null if it were in the center of your camera's view. >>>>> If >>>>> your null is centered, the values are the same from the ICETree and the >>>>> viewport info. >>>>> >>>>> The ICE info from the "Get Distance Between" is exactly the distance >>>>> from >>>>> center to center (global.kine to global.kine). I don't see a problem >>>>> with >>>>> using the info from ICE to feed into your DOF, you're probably going >>>>> to get >>>>> a more precise focus placement (I'll accept being refuted by the >>>>> photographers out there :) >>>>> >>>>> Hope that helps! >>>>> >>>>> Ben >>>>> >>>>> -- >>>>> Ben Davis >>>>> >>>>> www.moondog-animation.com >>>>> >>>>> +33 6 88 48 54 50 >>>>> >>>>> >>>>> On Fri, Mar 29, 2013 at 9:20 AM, Emilio Hernandez <emi...@e-roja.com> >>>>> wrote: >>>>> >>>>> Hello I am trying to rig the camera DOF so I can attach the distance >>>>>> to a >>>>>> null. I am the ICE distance between node. But when I turn on the >>>>>> distance >>>>>> to output camera from the viewer, it gives me a different result. >>>>>> >>>>>> So the Distance to output camera from the viewport options is >>>>>> different >>>>>> than the Distance between node in the ICE tree using the >>>>>> kine.global.pos >>>>>> from the camera and the null. >>>>>> >>>>>> I will appreciate any help on this issue. >>>>>> >>>>>> -- >>>>>> >>>>>> >>>>>> >>>>> >>> >> >> >> -- >> >> > --
