in the previous post I should have clarified -- you'd then use the distance to camera expression to drive the bokeh parameter
On Fri, Sep 27, 2013 at 12:13 PM, Ed Manning <etmth...@gmail.com> wrote: > Hey Tim -- > > Doesn't the position of the null == the "position in space where the ray > from the camera intersects that surface" when you've snapped the null to > the geo in the viewport? > > This might be simpler although less cool than the ICE approach. You'd > also easily be able to keyframe the null's position. > > > On Thu, Sep 26, 2013 at 5:15 PM, Tim Crowson < > tim.crow...@magneticdreams.com> wrote: > >> But the distance I want is the distance between the camera and the >> closest point on an arbitrary geometric surface behind the target. Now >> maybe the easiest thing to do would be to snap the target to said surface >> and get that distance. But there again, I need to identify the position in >> space where the ray from the camera intersects that surface. >> >> -Tim >> >> >> On 9/26/2013 4:09 PM, Christian Freisleder wrote: >> >> Hey Tim, >> I would use a expression. >> open the exression editor-->Function-->Distance-->distance to camera >> the result would be something like >> ctr_dist_cam( null. ) >> null. would be the object name you're using to mesure the distance. >> hope that helps >> christian >> >> On 26.09.2013 22:58, Tim Crowson wrote: >> >> I'm trying to set up a camera rig that will let me use an item of some >> kind (null, curve...) to act as a kind of focal point that can be moved >> around the frame. Basically I want to have a control parented to the camera >> which I can move around the frame, and which can be used to create a vector >> between the camera and whatever surface is "behind" that focal control. I'd >> then get the distance between the camera and that point on the surface and >> pass that to my lens shader. >> >> I'm really a noob when it comes to ICE in general, so I'm wondering how >> best to do this. I suck with vectors... >> -- >> >> >> >> *Tim Crowson >> **Lead CG Artist* >> >> *Magnetic Dreams, Inc. >> *2525 Lebanon Pike, Building C. Nashville, TN 37214 >> *Ph* 615.885.6801 | *Fax* 615.889.4768 | www.magneticdreams.com >> tim.crow...@magneticdreams.com >> >> *Confidentiality Notice: This email, including attachments, is >> confidential and should not be used by anyone who is not the original >> intended recipient(s). If you have received this e-mail in error please >> inform the sender and delete it from your mailbox or any other storage >> mechanism. Magnetic Dreams, Inc cannot accept liability for any statements >> made which are clearly the sender's own and not expressly made on behalf of >> Magnetic Dreams, Inc or one of its agents.* >> >> >> >> >> -------------------------- >> To unsubscribe: mail softimage-requ...@listproc.autodesk.com with subject >> "unsubscribe" and reply to the confirmation email. >> >> >> >> >> -------------------------- >> To unsubscribe: mail softimage-requ...@listproc.autodesk.com with subject >> "unsubscribe" and reply to the confirmation email. >> >> >> -- >> >> >> >> >> -------------------------- >> To unsubscribe: mail softimage-requ...@listproc.autodesk.com with >> subject "unsubscribe" and reply to the confirmation email. >> > >
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