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Thread: animating motion graphics - with ease in and outs

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    animating motion graphics - with ease in and outs

    OOoohkay this is a biguns, I know it can certainly be done. But I also know it may delve into some maths that I'm certainly not the best at.

    I have a layer attached to an active object via the layer object. I would like the active to move up the screen, then move down the screen. But I want it to ease into position when it reaches its top most part, then ease out when it moves back down.

    I would also like to see a bounce when it pauses momentarily, but that might be asking too much?

    So I can use path to create what I'm after, but it's very linear, would love to see it in a more... 'bezier' fashion.

    Is there something out there someone could direct me to?

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    Re: animating motion graphics - with ease in and outs

    Short answer: Trigonometry
    Long Answer: Use Trigonometry.
    Longer Answer: Search the articles section for an article called "Sin and Cos - What they do and why they rock" or something like that. Read through the article and near the bottom there is a formula for making the active move in a circle. That is what you need. To move it vertically only, don't add the X part of it.

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    Re: animating motion graphics - with ease in and outs

    Oh Jacob, that is a freakingly helpful article. Thank you for directing me to it!

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    Re: animating motion graphics - with ease in and outs

    Another way that doesn't use Sin or Cos is this:

    Let's say we only move on one axis - Y, you'd have an alterable value posY in your object, so you can store a floating point position. Then another we now call speedY, which you'll need for a sort of ease in.

    The ease out is easy:
    + Always
    > posY = posY + (targetY - posY) / factor
    > set y position of object to posY

    targetY is where it shall go. factor is how many frames it will roughly take to get there.


    For ease in there are different ways, of different complexity. The easiest I can think of is this:
    + Always
    > speedY = speedY + increment
    > posY = posY + speedY
    > set y position of object to posY

    Increment would be how fast it speeds up per frame.. like 0.15 or so.

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    Re: animating motion graphics - with ease in and outs

    Thanks Random, I'm glad I've learned how to use sin and cos in mmf and have found many uses for it already (have even implemented some).
    But your examples are perfect for what I'm after right now, and I'll be using it for sure!
    It's great to have options.

    Edit: Having a bit of a play around with both of these, the trigonometry behaves a bit smoother, but I have more control over this one. So I'll make them both meet halfway perhaps.

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