I'm considering to put a loading animation and a progress arc in a single object (like WhatsApp when loading a record), so I thought it was better to use TArc and TFloatAnimation, since I can control the StartAngle and EndAngle of the stroke. I'm trying to make the Google loading spinner logic but I'm very confused, it looks like there is a FloatAnimation with "linear" interpolation property that controls one of the angles and another one that looks to have a exponential or sinusoidal interpolation that start/end very fast and I can't see it, anyone had already tried to reproduce it? Thanks.
How to make the Google loading spinner with TArc?
4.4k Views Asked by Maurício Lima At
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Requirement to make this:
I find that you calling it a spinner is wrong. It's a spring in a harmonic motion plus a rotation effect.
This is the effect if you don't know it
You could read about it in Wikipedia (Warning it's written in French)
Now to solve this problem you need to define an array which will hold the values of the potential energy required to compress and stretch the spring.
The animation you are seeing is this
the spring stretching then getting compressed again. And in order to make it rotate we will define a rotation speed
and the finale animation would look like this
This is final implementation of this animation:
Also you could create animation like these
Update: after some synchronization(don't ask me how)
I found the could be exact replica of that google animation
Steps:
TArc
to 102.[23, 40, 39, 31, 23, 18, 15, 13, 11, 9, 7, 6, 5, 4, 4]
.and the result is this (the google animation on the right)