Photoshop Blending Operation In Shake

[user_deleted]

Hi !

I 'm trying to recreate the following Photoshop Layer Blending Operations, Without good Result :

• Color Burn
• Linear Burn
• Color Dodge
• Lighter Color
• Overlay
• Soft Light
• Hard Light
• Vivid Light

Does anybody have an idea of the mathematical operations done by Photoshop , and how to do the equivalent things under Shake !

Thanks For your help guys !

Cheers

SK

[user_deleted]

not trying to be rude, but there's so much written about this, so how about doing some research first?

like:
http://www.google.com/search?q=mathematica...+blending+modes

if you're looking for a colorx expression, hit number 2 should help:
http://www.simpelfilter.de/en/grundlagen/mixmods.html

++ chris

[user_deleted]

Hi Chris !

Thanks For your Help ! The second link is just fantastic , exactly what i was searching for . Thanks a lot.

Sorry that my question sounds very easy ! I make a research on CGtalk and Highend Shake Board , i try to google "Photoshop blending mode equivalent with Shake" without success ...

Anyway Thanks Again !

[user_deleted]

np, glad it helped...

i forgot to mention that if you are only interested in the effect and not the math behind it you could simply use the Multilayer node. check the manual page 476 (probably is a lot faster then the LayerX in most cases too)...

CODE
ColorWheel1 = ColorWheel(720, 576, 1, 0, 1, 1, 1);
Grad1 = Grad(720, 576, 1, 0.5, 0.5, 1, 0, 0, 1, 0, 0, 1, 0, 1,
    0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0);
MultiLayer1 = MultiLayer("v4.0", "L1", 0, ColorWheel1, 1, "L1",
    1, 0, "Over", 1, 0, 0, "rgba", 0, Grad1, 1, "L2", 1, 0, "Overlay",
    1, 0, 0, "rgba", 1);

++ chris

[user_deleted]

Thanks for your support Chris

the problem is that i'm on 2.5 and i'm trying to create the equivalent of the 4.0 Multilayer Node ! in my school we use XP so i can't enjoy the last add ons ! I try to find a macro , that can do the photoshop modes for 2.5, but i don't find strong solution yet .

The overlay , soft light and linear Burn will be sufficient ! so i will check these modes first !

Cheers

SK

[user_deleted]

i see..

well, there's a overlay macro in the download section of this site, the linear burn is quite simple..

CODE
Color1 = Color(720, 576, 1, 1, 1, 1, 1, 0);
Bytes1 = Bytes(0, 4);
IAdd1 = IAdd(Bytes1, 0, 1, 100);
ISub1 = ISub(IAdd1, Color1, 1, 100);

(inputs on Bytes1 and IAdd1)

.. and soft light should be something like this:

CODE
LayerX1 = LayerX(0, 0, r > 0.5 ? ((2*r-1)(sqrt(r2)-r2)+r2)  :  ((2r-1)*(r2-pow(r2,2))+r2),
    g > 0.5 ? ((2*g-1)(sqrt(g2)-g2)+g2) :  (2g-1)*(g2-pow(g2,2))+g2,
    b > 0.5 ? ((2*b-1)(sqrt(b2)-b2)+b2) :  (2b-1)*(b2-pow(b2,2))+b2,
a, z);

(although it looks slightly different then the multilayer node, so i might have messed up).
++ chris

[user_deleted]

After some deeper research on the download section i find , the overlay and Hard Light ! It gives good result. There is a third script which looks to be the Great One : xylayer = it's the 2.5 Layer Node with more options. But unfortunatly it doesn't work ...
http://www.highend3d.com/shake/downloads/m...Layer-2106.html

Thanks a lot for taking the time to share your script ! i will try to discover how to enhance this xylayer node, and make it works. i'm a beginner in shake , but i have basic coding skills ! So i guess it's gonna be enough , with some research time !

Cheers

SK

[user_deleted]

For those who needs Photoshop Blending Mode Under Shake 2.5 ! you can find them in After Effects Collection For Shake ! Thanks to Francois Sugny for those great Tools !

http://www.highend3d.com/shake/downloads/m.../misc/2466.html

[user_deleted]

just realized that i have the AE_Layers macro installed as well and compared the output of "Soft Light" composition of a ColorWheel and a Grad with the MultiLayer, the AE_Layer and my LayerX expression above - they are all different!

comparing the result with photoshops Soft Light the LayerX expression seems to mtch closest, so if identical results to photoshop are importan for your shots you might wanna do some more tests and probably replace the expression in the AE_Layer macro by the one above.

++ chris

[user_deleted]

Thanks again for your great support Chris , when i'll find some free time , i'll try to make my own macro with your equation , just in order to understand the basics of shake coding !

Chris i've got one more question , you looks to be a power shake user ! Do you use the multiplane node frequently, i read several guys on CGtalk , that aren't convinced by it . As a professional compositor, the main part of your job is 2d i guess ? I use maya a lot so by cleverly combining your 3D pass and Shake 2D abilities , i think you can do most part of your shot , without using 3D nodal Tools like Fusion or Nuke ? In big companies the large 3D comps are done by the Flame Guy i guess ?

Thanks again for your lights

Cheers

SK

[user_deleted]

well, i'm actually not doing too much heavy duty work, and hardly any 3D stuff but from what i've heard the multiplane is not terribly convenient to work it.. you can get do most stuff without, but sometimes it takes more effort.

nuke seems to be kinda good at that, but it's ten times the price.. flame 50 times.
hated fusion when i last used it, but admittedly this was v4 -- v5 is supposed to be much better.

personally i think that shake 4 on a cheap mac is one of the best ways to learn compositing.
++ chris

[user_deleted]

Thanks For your feedback chris . I agree Shake is really great ! It help you in the way you must understand what you are doing to use it .