solved Mesh.lookAt get the value after rotation

[zeng]

mesh.lookAt   I want to get x, y, z after rotation What should I do?    Mesh.rotation.x gets null

[brianzinn]

lookAt sets the rotationQuaternion, if set.  are you sure it was not set before?
https://github.com/BabylonJS/Babylon.js/blob/master/src/Mesh/babylon.transformNode.ts#L344

[zeng]

1 hour ago, brianzinn said:

lookAt sets the rotationQuaternion, if set.  are you sure it was not set before?
https://github.com/BabylonJS/Babylon.js/blob/master/src/Mesh/babylon.transformNode.ts#L344

Thank you, I think I should see more of the source code

[brianzinn]

The main thing is to learn the difference between the properties 'rotation' and 'rotationQuaternion'.  Only one is used at a time.  Did you find what you needed on mesh.rotationQuaternion?

[adam]

Make sure you are using the latest build.  Sebavan made an improvement to lookAt last night so that it won't force you to use rotationQuaternion.

https://github.com/BabylonJS/Babylon.js/commit/e76375739fb2ef1677133c5aae53b9dc39fa1911#diff-983b827a9015f6f47381e6fd7a172ca7R356

 

[zeng]

18 hours ago, brianzinn said:

主要的是要了解属性“旋转”和“旋转Quanternion”之间的区别。一次只能使用一个。你有没有找到你所需要的mesh.rotationQuaternion？

Yes, I found what I wanted，thank you...