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
