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Anitmating curve lines with gradient in between

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Leo TsoiAnitmating curve lines with gradient in between
by on Mar 18, 2016 at 8:07:33 am

Hi everyone, I am working on a graphic that looks like the one in the picture below.

I need to parent point A and B to two different objects and bend the line AB according to the positions of the two points.
The gradient has to stay inside the lines all time with the starting point stick to the intersection point as shown in the picture.
I've done this with straight lines using "beam" and an expression finding the intersection point, but I have no I idea how to do this with curve lines.
highly appreciate it if someone can help, thank you!!

Leo



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Michael SzalapskiRe: Anitmating curve lines with gradient in between
by on Mar 18, 2016 at 5:50:45 pm

Parenting isn't going to happen unless you get a third-party tool like Tracker2Mask or BAO Mask Avenger.

You could hand animate the paths pretty easily though.

You can use shape layers (or masks) to add, subtract, intersect, etc. to create a shape to hold the gradient. It doesn't even need to be the same shape that has the line. You could tie shapes to each other using expressions.

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Walter SoykaRe: Anitmating curve lines with gradient in between
by on Mar 18, 2016 at 8:29:47 pm

[Michael Szalapski] "You can use shape layers (or masks) to add, subtract, intersect, etc. to create a shape to hold the gradient."

Since the gradient is enclosed in that space, you could also generate the matte in no almost no time by precomping the layers that create the lines and using the Paint Bucket effect with maybe just a couple of keyframes for the fill point.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Leo TsoiRe: Anitmating curve lines with gradient in between
by on Mar 21, 2016 at 3:53:22 am

Thank you Walter! That is a great idea.

Leo


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Leo TsoiRe: Anitmating curve lines with gradient in between
by on Mar 21, 2016 at 3:52:52 am

Thank you for helping Michael! I'll give it a try.

Leo


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