[EFFECT] Curves

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bartalluyn

- Animmaniac
- - Joined 18 Mar, 2010
  - 36 topics • 711 posts
- 1
- 4 Jul, 2011
- Quote
Abstract implementation of tonal curves for RGB, Red, Green and Blue channels with three fixed nodes: highlights, midtones and shadows. Can be used to adjust overall contrast or create advanced color filters.

<img src="http://www.prr-art.com/things/construct/curves.gif" border="0">

Download Curves effect

Parameters:
- RGB Highlights : Positive values brighten overall highlights, negative values darken overall highlights.
- RGB Midtones : Positive values brighten overall midtones, negative values darken overall midtones.
- RGB Shadows : Positive values brighten overall shadows, negative values darken overall shadows.
- R Highlights : Positive values tint highlights red, negative values tint highlights cyan.
- R Midtones : Positive values tint midtones red, negative values tint midtones cyan.
- R Shadows : Positive values tint shadows red, negative values tint shadows cyan.
- G Highlights : Positive values tint highlights green, negative values tint highlights magenta.
- G Midtones : Positive values tint midtones green, negative values tint midtones magenta.
- G Shadows : Positive values tint shadows green, negative values tint shadows magenta.
- B Highlights : Positive values tint highlights blue, negative values tint highlights yellow.
- B Midtones : Positive values tint midtones blue, negative values tint midtones yellow.
- B Shadows : Positive values tint shadows blue, negative values tint shadows yellow.
Don't let the number of parameters scare you, it's simpler than it looks and it's very versatile.
- shinkan
- - Joined 21 Nov, 2008
  - 196 topics • 2,606 posts
- 1
- 4 Jul, 2011
- Quote
That's awesome,true color correction, nice one Animmaniac
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- Miceal
- - Joined 28 Jun, 2011
  - 15 topics • 42 posts
- 1
- 4 Jul, 2011
- Quote
That is amazing. Well done and thank you!
- Spider_hip
- - Joined 15 May, 2011
  - 15 topics • 76 posts
- 1
- 1 Mar, 2012
- Quote
I really liked this effects. But it's really weird. If I set values on startup they effects as normal. But if I change the values on runtime(for day/night cycle) than It effects very odd. I add 100 to value, but it effects like 10000. Or I set rgb highlights to 100. Than I decrease it 25 4 times. if it becomes 75 than it effects like 750. when it becomes 50 it effects like 750 again, when it becomes 0 than it effects like 0.

I couldn't resolve reason of this oddness.
- Funky Koval
- - Joined 28 Mar, 2010
  - 23 topics • 117 posts
- 1
- 11 Mar, 2012
- Quote
Spider_hip

Are you sure it's not your maths? You can only set absolute values and there's no way to retrieve current parameters... For me, it works flawlessly. Thanks.