Jump to content
blendingshadow

add changing colour background for flipbook sequence

Recommended Posts

Hello,

 

I am making an explosion flipbook. The explosion flipbook rolls from hot to black smoke. 

 

As a game engine will need a diffuse and alpha I am looking for a way to 'bleed' the edges out for each frame so I don't get edging when it goes in game. 

 

I found the expand cop but would like to bleed it to the edge if possible. Do it uniquely for every frame in the flipbook. Add the original render over the top without changing the way it looks.

 

Any help would be great

 

Thanks

Share this post


Link to post
Share on other sites
Guest tar

Not sure exactly what you need; would a soft edge mask on the edge of frame, fading to black, be enough

Share this post


Link to post
Share on other sites

Easier to explain, imagine a butterfly, looking top down at it. One side is blue the other yellow. I need to bleed / blend it to the background. The alpha will remain the same. 

 

It's just to stop the 1 pixel edging you get with changing colour values in a flipbook.

Share this post


Link to post
Share on other sites
Guest tar

Sounds like un-premultipling ya?

 

It's always easier to post an image of your needs; i.e. the butterfly I imagine is cropped by the camera. Is yours?

Share this post


Link to post
Share on other sites

ahh good shout, I will have a look at the premultiply. I also had a look at using the channel copy with an expand node. It gives some decent results but isn't 100% accurate

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×