Transform position deviating by small value when set.

Question

Hello,

I have a weird issue that I wonder if anyone else has come across. When setting a transform.postion it's adding a slight bit extra to the value. For example I set the transform.position to (0,0,12). I get something like (0,0,12.01234...). I capture the value just before I assign it just to make sure my maths is messing things up. But from Devlog(position) to transform.position = position there is an error. It's weird possibly a bug?

Answer 1

Best Answer

Answer by OwlInTheCupboard · Sep 27, 2022 at 11:50 AM

It appears there is a floating point error when getting the world position of a child object. Calculating the position by adding the local position to the parent transform position fixes this error.

0 · Share

Answer 2

Answer by tormentoarmagedoom · Sep 26, 2022 at 02:38 PM

Hello.

It's weird possibly a bug? 99,999% no :D

Are you using colliders? Rigidbodies? Any physics? Some Nav Mesh system?

These things can interact with position of a gameobject. You should use something to be sure its not moveing it, each thing have its porperties (Constrain/Kinematic for RB, Speed for NavSys....)

Bye!

0 Show 1 · Share

OwlInTheCupboard · Sep 27, 2022 at 10:30 AM 0

Share

They are empty transforms. they have models as children but I have tested by removing everything but the empty transform. There is a bit of code to determine the position and rotation. However the error is occurring after the script has executed. The code is giving a whole value as a position eg (2,0,1) I then print to the console what the transform.position is which shows (2,0,1) but then in the inspector they are misaligned by a small amount. You can even see it just as the textures on the models is slightly misaligned. It looks like a floating point rounding error just I cannot see how the hell one is being introduced after the script has finished other than a bug.

Transform position deviating by small value when set.

2 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions