Object and world space

[Luben]

Hi, i was wondering what the difference between world and object space is.
As i have understood it, world space in irrlicht is the same as object space sometimes seems to be, and world space is sometimes 'absolute' space. Have i understood this correctly?
And is model space the same as world/object space too then?

Thanks

[omaremad]

I hate multiple namings for the same thing too (is it fragment or texel or pixel )

I think object and model space are the same and world is like you said is the absolute

[arras]

World space is your absolute space, which have its origin and axes, usualy 2 or 3 -X,Y,Z. World space is preaty abstract since there is nothing to compare it to. You cant say where is its origin and what is its rotation since world space is where everithing else exist.
If you define position and rotation of something (object) inside (compared to) world space, you usualy use word "absolute".

Object space is space which is defined by object origin and rotation. It is not abstract anymore since object space exist inside world space and you can allways compare object space to world space. Where is its origin and what is its rotation compared to world one.
If you define position and rotation of something inside object space, you ofthen use word "relative".

Model space is usualy the same as object space but it is mostly used in 3D modeling programs.