This might do it. Choose the reference frame and subtract that - invert then
add back.
Or subtract a centre value for example to invert through the middle
Both examples below
Howard
set cut_paste_input [stack 0]
version 7.0 v4
push $cut_paste_input
Transform {
translate {{-(curve-curve(20))+curve(20) x20 116.4846802 x24 160.4846802 x31
206.4846802 x40 206.4846802} {-(curve-curve(20))+curve(20) x20 134.4846802 x24
192.4846802 x31 92.48468018 x40 206.4846802}}
center {960 408.5}
name InvertedCurve
label "Based on ref frame"
selected true
xpos -2618
ypos 1615
}
Transform {
inputs 0
translate {{-(curve-nCurveCentre)+nCurveCentre x20 116.4846802 x24 160.4846802
x31 206.4846802 x40 206.4846802} {-(curve-nCurveCentre)+nCurveCentre x20
134.4846802 x24 192.4846802 x31 92.48468018 x40 206.4846802}}
center {960 408.5}
name InvertedCurve1
label "Based on ref frame"
selected true
xpos -2610
ypos 1705
addUserKnob {20 User}
addUserKnob {7 nCurveCentre l "curve centre"}
nCurveCentre 151
}
>________________________________
> From: Darren Coombes <[email protected]>
>To: Nuke user discussion <[email protected]>
>Sent: Tuesday, 5 February 2013, 10:43
>Subject: Re: [Nuke-users] Invert a tracker
>
>
>It's not my comp, a colleague asked, and he basically needs the curve thats
>generated to be inverted, i suggested stabilise, if match moving, but
>apparently it's not working. I think the position needs to be inverted.
>
>
>Hope this makes sense.
>Thanks.
>
>
>Darren Coombes - VFX Compositor
>
>
>Check out some of my work…
>www.vimeo.com/53990514
>
>
>Mob: +61 418 631 079
>Skype: darrencoombes
>Twitter: @durwood81
>
>On 05/02/2013, at 8:33 PM, Mikael Ewald <[email protected]> wrote:
>
>Do you want to invert it by position or time?
>>
>>
>>To invert a tracking points position you could just use the following
>>expressions:
>>(In the points x-knob) width-curve
>>(In the points y-knob) height-curve
>>
>>
>>Cheers
>>Mikael
>>
>>
>><-----Ursprungligt Meddelande----->
>>
>> From: Darren Coombes [[email protected]]
>>Sent: 5/2/2013 10:21:51 AM
>>To: [email protected]
>>Subject: [Nuke-users] Invert a tracker
>>
>>
>>Does anyone know how you can invert a tracker?
>>
>>
>>Darren Coombes
>>
>>
>>Tel: +61 2 9520 3633
>>Mob: +61 418 631 079
>>Skype: darrencoombes
>>
>>
>>iDisk: https://public.me.com/darren.coombes
>>
>>
>>_______________________________________________________________
>>Annons: Dejta gratis på Spraydate - Sveriges största dejtingsajt. Bli medlem
>>gratis idag! _______________________________________________
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>
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