Update Object Position on Local Grid

[Flexx7000]

Hey,
first: sry for my bad english, it’s a mix of me and a translator

I hope you can help me here. I just do not get ahead.
What I want to achieve?

I would like the player can place an object, but only in a grid of 10. In addition I always round the position to a value of 10.
The Problem is, when i rotate the Object by 10°, 20°, 30°, etc. then it works not with the round correctly. The object should always be set only at 10 on his locale axis.

How do I get this?
With “Single LineI Trace by Channel” i take a position of the crosshair. I update the Graph with “Event Tick”.
But how do I get now the world coordinates of the local grids? I’ve already tried everything possible and calculated without end and find no solution.
I’ve already tried everything possible with “Vector Forward & Right” but can not make it.

[Flexx7000]

[anonymous_user_34ab444a1 (anonymous_user_34ab444a)]

Just transform everything to world space around the origin do some work and then move it back to grid space.

Maybe something like this? I assume you’re rotating around the origin, if not then you’ll have to offset everything from your local origin to work around the world origin doing the rotation.

[ederoliveira20]

Could you please enligthen me on this, How do I make it snap to nearest Z when it finds something blocking it’s way? and how make it back to lowest Z?