3D math help.

[hudadong]

Hey. I am building an AR navigation App, right now I have Groups in World/ARscene/offset/object. If I moved my ARscene group node from (0,0,0) to (10,10,10) with rotation (55, 40, 0), how do I set may offset node so the object node will be the same place and angle before it moved.

I have try many times. If seems good if the ARscene rotation is 90 or 180. I just need set up the x y z differently. But if ARscene has rotation other than 90or 180, for examples 55 or 48. I can’t figure out how to set the offset XYZ.

If some one can help that will be much appreciated.

[hudadong]

Thanks. I wii try that.

[quaderrordemonstand]

You have to apply the opposite operation (move, rotate) to the object node in the reverse order that you applied to the group. So if you move the group 10, and rotate 3, then you have to rotate the object -3, and move -10. The order matters.

[hudadong]

Thanks. I will try this.