TransformDirection and InverseTransformDirection

Questions & Answers
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1

Please, can someone explain me what are TransformDirection and InverseTransformDirection and mainly in which case we use them.

I read Unity documentation and I don’t really understand them. I came across a tutorial in which there are used. It is about mutlilevel turret. Thanks

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TransformDirection is used to convert a direction from local space to world space, while InverseTransformDirection is used to convert a direction from world space to local space. These methods are commonly used when you need to translate or transform directions between different coordinate systems, such as when moving objects, performing calculations, or aligning objects with specific directions.

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InverseTransformDirection:

  • For example, if you have a direction vector in world space and you want to know how that direction would appear in the local coordinate system of an object, you can use transform.InverseTransformDirection(worldDirection).
  • It is useful when you want to work with directions or perform calculations in the local coordinate system of an object, regardless of the object’s position or rotation in the world.

TransformDirection:

  • For example, if you have a game object with a forward direction pointing in its local positive z-axis, calling transform.TransformDirection(Vector3.forward) will return the forward direction of the object in world space.
  • It is useful when you want to move an object or perform calculations in a particular direction in world space, regardless of the object’s rotation or position.