Different Coloured Side To 3D Shape

Community Beginner ,
Mar 31, 2019 Mar 31, 2019

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Hi

I'm creating a project where an origami-style paper banner folds out and becomes a lower third for a video.

I want the FRONT side of the shape to be one colour, but also as it's folding out I want to see the BACK side of the shape as another colour.

I've attached what it looks like currently. You can see how it folds out, I just want to show the underside in another colour and keep the top side blue.

Thanks!

Screenshot 2019-03-31 at 15.07.35.png

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correct answers 1 Correct answer

Adobe Community Professional , Mar 31, 2019 Mar 31, 2019
Be sure to set the layer to 3D to get this expression workAlso set the expression to legacy from project settings (file/project settings)

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Mentor ,
Mar 31, 2019 Mar 31, 2019

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How did you build the shape and folding effect?

There are several ways but which one to choose depends on how you created the origami effect.

You can separate front and back side with masks, coloring each individually - re-coloring the shapes - using 3D lightning, just to name a few.

*Martin

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Community Beginner ,
Mar 31, 2019 Mar 31, 2019

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Thanks for your reply Martin.

I built the shape by using shape layers and rotating them in the 3D space to give the appearance of folding out.

Does that make it difficult to colour now back and front?

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Mentor ,
Mar 31, 2019 Mar 31, 2019

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Not at all!

You can change and animate the color of shape layers. Just recolor all shapes which are on the back and as soon as they flip to the front, put in keyframes and give them the front color.

You should try lightning, as well. Just add a light and give yourself an hour to play around with the settings. The advantage of lightning will be, that once set up, it will always work, even if you change the animation and timing.

*Martin

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Adobe Community Professional ,
Mar 31, 2019 Mar 31, 2019

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You can also do it by using some expression, this link must be useful CreativeCOW

also here a small free script can do this easily https://aescripts.com/two-sided-layer/

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Community Beginner ,
Mar 31, 2019 Mar 31, 2019

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Thanks I will try that script perhaps.

I already saw that forum you linked to and tried that expression.

frontColor = [0,0.5,0.5,1]; // turquoise

backColor = [0.5,0.5,0,1]; // dark yellow

if (toCompVec([0, 0, 1])[2] > 0 ) frontColor else backColor

It returned an error sadly.

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Adobe Community Professional ,
Mar 31, 2019 Mar 31, 2019

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Be sure to set the layer to 3D to get this expression work

Screen Shot 2019-03-31 at 8.46.47 PM.png

Also set the expression to legacy from project settings (file/project settings)

Screen Shot 2019-03-31 at 8.49.26 PM.png

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Community Beginner ,
Mar 31, 2019 Mar 31, 2019

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Wow thank you so much my issue was Legacy ExtendScript!!

My last question is I have brand guidelines to follow and not sure how to convert [0.5,0.5,0,1]; // Dark Yellow to a RGB value of my choice...

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Adobe Community Professional ,
Mar 31, 2019 Mar 31, 2019

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You can use this tools to get the value of the color you want instantreality 1.0 - tools - color calculator

take it from RGB Normalized decimal section and replace the first 3 digit and keep the number 1 as it is

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Community Beginner ,
Apr 01, 2019 Apr 01, 2019

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YOU'RE THE BEST.

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New Here ,
Feb 24, 2022 Feb 24, 2022

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In 3d shape layer .must increase extrusion depth then Click on Add Button and choose front then  color

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New Here ,
Feb 24, 2022 Feb 24, 2022

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LATEST

Must choose render Cinema 4D 

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