Light Wrap Technique in FU5

[macool]

Hello: I was hoping someone could pass on any wisdom and insight on ways I can create a “light Wraping” effect in the DF flow? Much appreciation!

Ps. I understand there are ways to do this with plugins but I was seeking a more traditional method.

Cheers-macool

[nigel]

Bare with me as I am just trying to get to grips with fusion 5, so there is probably a smarter way to do this ! Basically the principle is identical to any other comp app.

-merge the fg and bg
-then branch off from the fg use a channel boolean to invert the alpha.
blur inverted mate
-use another channel boolean to multiply this blurred matte with the original, this will -be your light wrap matte.
-then place the BG over the fg using the light wrap matte. (You can either use another channel boolean to replace the alpha and then do a merge or do a merge and palce the light-wrap matte in the effects mask.)

I prefer to use either lighten or screen when applying light wraps. Use the blur ammount and the blend of your merge to tweak !

[Tomas Spokas]

here is a simple lightwrap macro.

http://briefcase.yahoo.com/bc/cedarconnor/lst?.dir=/Demo+Reel&.view=l

Cedar-

[Niccolò]

I basically do it similar but different and I do it in two ways depending on the situation.

method 1.

FG alpha feeds in to blur node and Boolean in the same time and from blur connects to the fg pipe of the same boolean where you do subtract. By controlling the amount of blur you control how deep your light wrap goes in to your fg. Now for the bg you connect another blur and blur it allot (20-30 pixels) and add it as your forgeound for your lw alpha mask. So lw mask is alpha channel for blurred BG.
You compose FG+BG and then on top of that your blurred BG +LWpass in alpha (be careful about pre-multiply, multiply). Blend in gently. Blend more then 1 width of lightwrap

method 2.

I use it for light sources and bright things or just different look. You make a lumakey of your Bg by doing so you isolate bright parts then do clear on color and alpha through Boolean and connect your fg alpha to mask of the boolean node(by doing so you make a hole where your fg is) and then do glow operation so you get light spill on your FG. All you need to do now is merge Atop on your FG before going to your BG+FG merge node.

Anything clear now?
Im thinking It might be better showing some pictures.

😛

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