aha! I see what you did there. Thanks Frank!
On Jan 1, 2014, at 9:09 PM, Frank Rueter <[email protected]> wrote:
> try this to invert normals.X (PositionToPoints to see what is going on with
> viewer set to display point normals):
>
> set cut_paste_input [stack 0]
> version 8.0 v1
> Read {
> inputs 0
> file "\[file dirname \[value root.name]]/footage/sphere2.exr"
> format "640 480 0 0 640 480 1 PC_Video"
> origset true
> on_error "nearest frame"
> name Read2
> selected true
> xpos 374
> ypos -233
> }
> add_layer {normals normals.X normals.Y normals.Z}
> Expression {
> channel0 {normals.X -normals.Y -normals.Z}
> expr0 -normals.X
> channel1 none
> expr1 normals.Y
> channel2 none
> expr2 normals.Z
> name Expression1
> selected true
> xpos 374
> ypos -149
> }
> add_layer {xyzWPP xyzWPP.red xyzWPP.green xyzWPP.blue}
> PositionToPoints2 {
> display textured
> render_mode textured
> P_channel xyzWPP
> N_channel normals
> name PositionToPoints1
> selected true
> xpos 521
> ypos -112
> }
>
>
>
>
> On 02/01/14 18:00, Gary Jaeger wrote:
>> seems like funky stuff, but take a look if you’re so inclined. link below. I
>> assume you mean to use an Invert node? I’ve tried but can’t get it right.
>> The file below has a light and camera in the same position as maya. simple
>> sphere. Thanks Frank
>>
>> https://dl.dropboxusercontent.com/u/4327868/relight.zip
>>
>>
>> On Jan 1, 2014, at 8:46 PM, Randy Little <[email protected]> wrote:
>>
>>> What happens if you reverse the normals in nuke?
>>>
>>> On Jan 1, 2014 11:44 PM, "Gary Jaeger" <[email protected]> wrote:
>>> I see. I think. It’s from maya (which is Y up) and vray but I’ll just have
>>> to experiment
>>>
>>> On Jan 1, 2014, at 8:34 PM, Frank Rueter <[email protected]> wrote:
>>>
>>>> Well, if you export from a "z up" system you might have to swap the green
>>>> and blue channels, and if you are importing from a left handed coordinate
>>>> system you will have to invert red I think.
>>>>
>>>> >>And point positions are worldspace, right?
>>>> Depends on what the shader is doing. They might be in camera space.
>>>>
>>>>
>>>> On 02/01/14 17:30, Gary Jaeger wrote:
>>>>> Thanks Frank. That’s what I figured but I couldn’t find a combination
>>>>> that worked right. It would be in invert, and not a swap, right? And
>>>>> point positions are worldspace, right?
>>>>>
>>>>> On Jan 1, 2014, at 7:49 PM, Frank Rueter <[email protected]> wrote:
>>>>>
>>>>>> That does sound like you need to munge the VRay normals.
>>>>>> I think that is exactly what I did in the past but it's been to long, I
>>>>>> can't remember the details.
>>>>>>
>>>>>> If up is down and left is right, it sounds like you just need to invert
>>>>>> your normals pass' red and green channels.
>>>>>> This could be caused by a z up vs y up coordinate system in your 3D
>>>>>> setup (i.e. 3dsMax) and a left vs right hand coordinate system.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 02/01/14 16:30, Gary Jaeger wrote:
>>>>>>> I’m experimenting with Relight. It’s cool, but it looks to me like
>>>>>>> something is reversed. If I put a light that I know should be upper
>>>>>>> right, the lower left gets illuminated. Maybe normals reversed or
>>>>>>> something? these are passes from vray. Anybody run into this?
>>>>>>>
>>>>>>>
>>>>>>> Gary Jaeger // Core Studio
>>>>>>> 249 Princeton Avenue
>>>>>>> Half Moon Bay, CA 94019
>>>>>>> 650 728 7060
>>>>>>> http://corestudio.com
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> 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
>>>>>
>>>>> Gary Jaeger // Core Studio
>>>>> 249 Princeton Avenue
>>>>> Half Moon Bay, CA 94019
>>>>> 650 728 7060
>>>>> http://corestudio.com
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> 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
>>>
>>> Gary Jaeger // Core Studio
>>> 249 Princeton Avenue
>>> Half Moon Bay, CA 94019
>>> 650 728 7060
>>> http://corestudio.com
>>>
>>>
>>> _______________________________________________
>>> 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
>>
>> Gary Jaeger // Core Studio
>> 249 Princeton Avenue
>> Half Moon Bay, CA 94019
>> 650 728 7060
>> http://corestudio.com
>>
>>
>>
>> _______________________________________________
>> 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
Gary Jaeger // Core Studio
249 Princeton Avenue
Half Moon Bay, CA 94019
650 728 7060
http://corestudio.com
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