flint question; casting shadows within matte

[muiisal]

i’m using flint, working in action, and have come across a question…

i have a hand passing over character B’s head, and would like to place a shadow of the hand on the head of B. however i need the shadow to remain within the confines of the character B’s matte (i’ve got a matte of him) – so the end result is the shadow of the hand doesn’t cast onto anything else but B’s head.

anyone know the magic way around this?! how do i tell my shadow only to cast within the matte?

[Keyser_Soze]

muiisal wrote:

i’m using flint, working in action, and have come across a question…

i have a hand passing over character B’s head, and would like to place a shadow of the hand on the head of B. however i need the shadow to remain within the confines of the character B’s matte (i’ve got a matte of him) – so the end result is the shadow of the hand doesn’t cast onto anything else but B’s head.

anyone know the magic way around this?! how do i tell my shadow only to cast within the matte?

not very hard is it? just put a layer on top of the shadow with the inverted matte for character B.

[muiisal]

but that would mean that layer would need to be my top layer… and what if i have to do this for multiple characters… i’ve got six characters, half on blue screen, interacting in the same scene, passing infront of eachother…

is there any other solution than inverting the matte + sticking it on top?

[Anonymous]

hi

you can solve this with sources > custom, there you can build trees (like “precomps” and use them as front/matte

ciao
robert

[Anonymous]

Thanks for the help with the matte shadow thing guys! Have achieved what I wanted by using a source but now my orginal keyed characters have a black outline which I can’t seem to get rid of.- anyone any ideas?

[Anonymous]

Nevermind- I found out how to do it. Just change the transfer mode from “Blend” to “ADD” in the image controls. Bobs your uncle!

[Author]

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