-1
\$\begingroup\$

In Unity game engine and C# scripting; Is there any distinction between global space and world space? Are this two the same thing and identical or there is a distinction? I'm not confusing between local and global. The relation between local-global is the same to local-world? Can I exchange this two words (global and world) without creating confusion?

for example in the Unity manual: https://docs.unity3d.com/Manual/Transforms.html

Make a distinction adding "or":

world space or global coordinates.

\$\endgroup\$
14
  • 3
    \$\begingroup\$ Global/world space are the same thing. The other space is local/mode-view \$\endgroup\$ Commented Mar 23, 2017 at 19:03
  • \$\begingroup\$ Shoot meant to say model-view not mode... And yes by extension local has the same relation to world as it does to global as they are interchangeable \$\endgroup\$ Commented Mar 23, 2017 at 19:15
  • \$\begingroup\$ In Unity making courses I here this distinction for this particular game engine. Here is the source video at 04:02 link: 3dmotive.com/series/advanced-c-in-unity-5/291/2635. \$\endgroup\$ Commented Mar 23, 2017 at 19:15
  • 2
    \$\begingroup\$ Because it's really a generic question, not specific to Unity. \$\endgroup\$ Commented Mar 23, 2017 at 19:23
  • 1
    \$\begingroup\$ There's nothing here that is Unity specific. The terms are generic 3D terms. I think this question is better as one that doesn't bother with "Unity" in the text or title, but I'm not going to get into a rollbar war with you over it. If you want to leave it this way, that's fine. There's no reason to make two questions though. \$\endgroup\$ Commented Mar 23, 2017 at 20:07

1 Answer 1

Reset to default
1
\$\begingroup\$

I think it is basically the difference between relative and absolute positions.

https://docs.unity3d.com/ScriptReference/Transform-localPosition.html

So that a child gameObject's position/rotation/scale can be relative to it's parent (0, 0 is bottom left of window not screen) instead of

https://docs.unity3d.com/ScriptReference/Transform-position.html

Which is absolute. (0, 0 is middle or bottom left of screen depending on anchors)

there is a toggle for this Local/Global setting in the toolbar too

https://docs.unity3d.com/Manual/PositioningGameObjects.html

enter image description here

Click the Local/Global button on the right to toggle between Local and Global.

  • Local keeps the Gizmo’s rotation relative to the GameObject’s.
  • Global clamps the Gizmo to world space orientation.
\$\endgroup\$
2
  • \$\begingroup\$ So the gismo unity Vector3 "rotation" that is in the inspector not accessible via coding are relative global values activated via this button and the C# functions as for example InverseTransformPoint are world absolute value. \$\endgroup\$ Commented Mar 23, 2017 at 23:01
  • \$\begingroup\$ ya the button is only for editing in editor with mouse or inspector... from source code use transform.localPosition for local (usually always) and transform.position for global \$\endgroup\$ Commented Mar 23, 2017 at 23:45

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.