Swipe Rotate - Is there an easier way?

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- jobel
- - Joined 27 Jul, 2013
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- 14 Feb, 2017
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I'm trying to spin a knob using a touch swipe control scheme for mobile.

first I tried using the physics behavior... no good.

so now I'm manually checking the direction of the swipe, and then the position of the swipe - since that would change the spin direction.

if there's no easier way, can anyone make suggestions to make this capx tighter? I actually have only tested this with the mouse so

far...

I'd also like to make it more kinetic and tried using Touchspeed, but I'm not sure how accurate the mouse is in replicating that. Currently that part is just commented out, but it wasn't working very well especially swiping up.

https://dl.dropboxusercontent.com/u/362 ... _spin.capx
- R0J0hound
- - Joined 15 Jun, 2009
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- 14 Feb, 2017
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Here's a math idea that simplifies it a bit.

Basically it's a torque calulation using a cross product.

https://dl.dropboxusercontent.com/u/542 ... _knob.capx
- jobel
- - Joined 27 Jul, 2013
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- 14 Feb, 2017
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R0J0hound wow, that does simplify it...
For the torque calc, I don't understand what the multiplying it by 3 does? lowering this gives it more drag maybe? I'd like to play around with the sensitivity and drag.
- jobel
- - Joined 27 Jul, 2013
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R0J0hound actually, I think I got it... just had to mess with the numbers. this is great thanks for the help!
simple and brilliant... (I should study calculus II!)
- R0J0hound
- - Joined 15 Jun, 2009
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The 3 was arbitrary because without it the object wouldn't spin enough. The math is just vector algebra an I probably butchered it a bit.
- jobel
- - Joined 27 Jul, 2013
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- 14 Feb, 2017
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The math is just vector algebra an I probably butchered it a bit.

oh haha.. I thought cross product was a calc thing..but maybe that's 3D?

https://betterexplained.com/articles/cross-product/
- Milupa5
- - Joined 28 Mar, 2014
  - 1 topics • 26 posts
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- 2 Apr, 2017
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Could you guys please reupload this capx

Thanks so much!

Here's a math idea that simplifies it a bit.

Basically it's a torque calulation using a cross product.

https://dl.dropboxusercontent.com/u/542 ... _knob.capx
- jobel
- - Joined 27 Jul, 2013
  - 232 topics • 2,179 posts
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- 2 Apr, 2017
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Milupa5 sorry! I don't have it the capx anymore - but I took a screenshot to show someone a while ago..
- newt
- - Joined 12 Nov, 2008
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- 2 Apr, 2017
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You could probably use touch speed instead of distance.
- R0J0hound
- - Joined 15 Jun, 2009
  - 90 topics • 7,264 posts
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- 2 Apr, 2017
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Milupa5 here's the capx
https://www.dropbox.com/s/z0z4u6dowu8cd ... .capx?dl=0
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- Milupa5
- - Joined 28 Mar, 2014
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- 3 Apr, 2017
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Thank you all!