如何在 SceneKit 中将这个 model 居中

Question

Imported a tiger model into SceneKit, but it is off center? Is this something I can fix? The green/red/blue arrows should be under the model?

Answer 1

To reposition model's pivot point in SceneKit, use the following code:

node.simdPivot.columns.3.x
node.simdPivot.columns.3.y
node.simdPivot.columns.3.z

If you wanna know more about 4x4 matrices, read this post .

Answer 2

you can use yourEntity.position = SIMD3(x: 0, y: 0, z: 0)

or set the position with editor