Hey Michael, Thanks heaps, I did some testing with it, and although it seemed to work, I had difficulty getting detailed reflections to show up on flat surfaces. Does a camera set to "spherical" shape render the appropriate lat-long image that the gizmo is expecting?
Will do some more testing in a different scenario. Thanks heaps for the time you put into the gizmo, the math behind it is just beyond me. Cheers, Jordan On Mon, Sep 19, 2011 at 6:36 PM, Michael Garrett <[email protected]>wrote: > I wrote this gizmo for doing environment reflections and it does take into > account camera movement. Basically it does classic cg environment mapping > as you would have seen in a pre-raytracing Renderman shader, or the > Nuke Environment shader. > > To use it you need the Nuke camera, a world point AOV and world normals AOV > for your input, and the environment image you would generally feed it would > be an unwrapped spherical environment. > > There is a bit of optional exr metadata stuff that bloats this gizmo out a > bit, you could always remove that if you want (I need to update it some > time). > > Michael > > > > On 18 September 2011 21:00, Jordan Olson <[email protected]> wrote: > >> Good question, >> >> Say we have an environmental map in the form of an unwrapped image, (or a >> nuke 3D camera set to Sphere rather then Perspective) >> - and we want to apply that to the render which has a normals World pass. >> Though now that I think of it, it would have to take into account camera >> movement to draw new motion vectors... >> so- to answer your question, probably to simulate reflections? >> >> Ok, upon further research, I'm going to look into this method here. >> http://www.nukepedia.com/gizmo-downloads/other/envrelight/ >> The trick will be to get the reflections to take the camera movement into >> account... perhaps this could work if a sphere camera is attached to the >> animated camera. >> >> Cheers, >> Jordan >> >> >> On Mon, Sep 19, 2011 at 12:09 PM, Hugh Macdonald < >> [email protected]> wrote: >> >>> Do you just want to use the normals directly to map the environment, or >>> do you want to simulate reflections (which require a new vector being >>> calculated) >>> >>> Hugh Macdonald >>> *n**vizible** – VISUAL EFFECTS >>> * >>> [email protected] >>> +44(0) 20 3167 3860 >>> +44(0) 7773 764 708 >>> >>> www.nvizible.com >>> >>> On 18 Sep 2011, at 23:43, Jordan Olson wrote: >>> >>> Hey guys! >>> Would you happen to know of any ways or setups which would allow you to >>> remap an environment map or 3D environment onto a CG prop using the camera >>> normals? >>> Cheers, >>> Jordan >>> _______________________________________________ >>> 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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