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Revolving a sphere around another sphere

Posted By Daemonspike 8 Years Ago
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Daemonspike
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I am trying to make a nucleus electron animation. But I am new to animation it seems.
I can't even get one sphere to revolve around another.
Must I manually place the sphere in it's positions or can I use paths?
About paths, can I use transfrom tools to move the sphere along the path or do I have to adjust the "green" value
that dictates the postition on the curve?
I just want one ball to circle around another one. Like a solar system, well in this case a atom.

Any tips would be helpful!
Kelleytoons
Kelleytoons
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You can use paths, but you should read up (or watch a tutorial) on them to fully understand how to use.

My own gut would be to just attach the spheres together and rotate the first (making sure the pivot is in the center).  That's certainly the easiest and you can do it in seconds.



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animagic
animagic
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Like Kelley suggested.

But, if you want the center sphere to be stationary because you have more than one secondary sphere rotating around it, you would move the pivot of those spheres so that they coincide with that of the center sphere.

From then on it's a simple key frame animation.


https://forum.reallusion.com/uploads/images/436b0ffd-1242-44d6-a876-d631.jpg

Daemonspike
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Great idea that worked with one sphere.
Hmm, maybe copy the both of them and just rotate the other two with the second also being at world zero.
Thanks
Daemonspike
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Will start experimenting with pivot points as it seems.
Thank you for the idea and your time Ani : )
Daemonspike
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I ended up doing this instead :)

https://youtu.be/yRu-npnd7vc
colour
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Daemonspike (8/26/2017)
I am trying to make a nucleus electron animation. But I am new to animation it seems.
I can't even get one sphere to revolve around another.
Must I manually place the sphere in it's positions or can I use paths?
About paths, can I use transfrom tools to move the sphere along the path or do I have to adjust the "green" value
that dictates the postition on the curve?
I just want one ball to circle around another one. Like a solar system, well in this case a atom.

Any tips would be helpful!


See Screenshot.
1) Props/3D Blocks/ Sphere
2) Add 2 Spheres.
3) Re-size 2nd Sphere
4) Centre 1st Sphere in middle of Path, by Moving it.
5) Put 2nd Sphere on Path (Select Path / 1st Way-Point. Position 0. Drag Timescale Scrubber for desired speed. Select last Way Point Position 100) Play-backhttps://forum.reallusion.com/uploads/images/645aab78-44a3-4c40-a257-c063.jpg
BTW, Attaching Spheres as prev advised, wouldn't  have the desired result.













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justaviking
justaviking
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One way to get a FULL CAPABILITY model of both rotation and orbiting...  Example: Planet and Moon...

It requires two dummy props and two spheres.

a) Start with a central primary "planet" dummy prop
b) Attach the planet to the primary dummy
c) You can now rotate the planet relative to the primary dummy prop to make the planet rotate

d) Attach a secondary "moon" dummy to the planetary dummy
e) Rotate the moon dummy around the planetary dummy... its orbital speed is independent of the planet's rotation
f) Rotate the moon relative to the moon dummy for it's revolution speed (or leave as-is if it is Earth's moon)

Repeat steps "d/e/f" for any additional orbiting bodies.

If your spheres are a uniform color and perfectly smooth, there is no need to rotate them (just orbit), in which case you can skip half of these steps.

There you are.  Total control.



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animator_16
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:alien:
justaviking (8/27/2017)
One way to get a FULL CAPABILITY model of both rotation and orbiting...  Example: Planet and Moon...
It requires two dummy props and two spheres.
a) Start with a central primary "planet" dummy prop
b) Attach the planet to the primary dummy
c) You can now rotate the planet relative to the primary dummy prop to make the planet rotate
d) Attach a secondary "moon" dummy to the planetary dummy
e) Rotate the moon dummy around the planetary dummy... its orbital speed is independent of the planet's rotation
f) Rotate the moon relative to the moon dummy for it's revolution speed (or leave as-is if it is Earth's moon)
Repeat steps "d/e/f" for any additional orbiting bodies.
If your spheres are a uniform color and perfectly smooth, there is no need to rotate them (just orbit), in which case you can skip half of these steps.
There you are.  Total control.


BRAVO!!!!! Holy badgers whiskers.... SOMEONE has their head  s c r e w e d  on the right way. :P
KEY INFORMATION... "I AM NEW TO ANIMATION."  Therefore:- Simplicity to start the ball rolling.

Nice one Viking. YOUR way you can spin the planets at one speed, then spin the moons at another and spin the orbits as you wish.
Quick! Clean! Concise!

Armstrong.
And, Yes, before you ask.... I AM an Animator. xx


Kelleytoons
Kelleytoons
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Yeah, as soon as Dennis wrote the word "dummy objects" I hit my head with the back of my hand.

He definitely has it scoped out -- I forget how powerful using dummies are (mostly because in other programs you can adjust things a bit easier without needing them).



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