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JohnK

Move Pivot Without Moving Mesh

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In the second part of last year I was involved in many a topic related to pivots and I suggested a number of ways to solve the various but similar problems.

http://www.html5gamedevs.com/topic/26327-set-pivot-on-rotatedscaled-mesh/

http://www.html5gamedevs.com/topic/26327-set-pivot-on-rotatedscaled-mesh/

http://www.html5gamedevs.com/topic/26032-dont-change-the-mesh-position-when-setting-the-pivot/

http://www.html5gamedevs.com/topic/17207-rotating-a-mesh-around-a-pivot/

Recently I needed to return to pivots and realised that I had never really understood them. My re-visiting them has gained me some new insight into pivots and manipulating them in a much simpler way than before.

Quite possibly in another year's time I will discover there is still a better way than I have now found. For the time being I would like to share my new found understanding and hope it might help some of you.

So if you are trying out pivots and want to know of a fairly straightforward technique to use them read on http://babylonjsguide.github.io/advanced/Pivots

 

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Nice tutorial John.  I just wanted to point out that you can also use: 

setPivotPoint

https://github.com/BabylonJS/Babylon.js/blob/master/src/Mesh/babylon.abstractMesh.ts#L1497

getPivotPoint

https://github.com/BabylonJS/Babylon.js/blob/master/src/Mesh/babylon.abstractMesh.ts#L1524

getAbsolutePivotPoint

https://github.com/BabylonJS/Babylon.js/blob/master/src/Mesh/babylon.abstractMesh.ts#L1542

I need to write a doc for this at some point.  If someone else wants to, please feel free.

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When I was checking through the old topics above I noted you had PRed those functions. Will have a play around with them and see what I can do about adding them in to my tutorial.

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