Click coordinates in object space

[ginopeloso]

I have the following situation: a user clicks on the screen and the app gets the screen coordinates of the click.

With the method

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Interact2D.reproject2D3D I obtain the coordinates of the click in Camera Space.
With

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Interact2D.reproject2D3DWS I obtain the coordinates in World Space. How can I obtain the same coordinates in Object Space?

I need to change the X and the Y of the rotation pivot of the object in the point of the object where the user clicks. As the doc says the method

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Object3D.setRotationPivot sets the rotation pivot of the object. The rotation pivot is the point in objectspace around which the object will be rotated using its rotation matrix.

Thanks!

[EgonOlsen]

Object3D has a method called getInverseWorldTransformation(). Just multiply the vector in world space with the returned matrix and you are back in object space.