Mouse Position for Screen Space - Camera?

Lets say i want a UI.Image to follow the mouse, in a "Screen Space - Overlay" canvas i can do it as easy as

Image.transform=Input.mousePosition;

in a LateUpdate.

But how to do the exact same thing for a Screen Space - Camera canvas?

 

Exactly the same, both of the Screen Space canvases cover the entire screen. You might however have to transform the mouse coordinates from world space (through the camera of the Screen Space - Camera canvas) to get the 2D position.
e.g.

Code (CSharp):

1. var screenPoint = Vector3(Input.mousePosition);
2. screenPoint.z = 10.0f; //distance of the plane from the camera
3. transform.position = Camera.main.ScreenToWorldPoint(screenPoint);

 

Thank you.

 

this really helped me out, thanks.

 

thanks, this really should be in the documentation

 

It is in the docs, just not exactly easy to find
http://docs.unity3d.com/ScriptReference/Camera.ScreenToWorldPoint.html

 

I know this post is several years old now, but I want to thank @SimonDarksideJ for his answer, I have spent several days wondering why my mouse position seemed to be offset from where it should be I have looked through tons of forums and finally I have found a useful answer. This has given me a much better understanding of how Unity's UI systems work, I cannot thank you enough!

 

this post may be old, but i really thank you for the post, you really save me, thank you so much

 

Dude seven years later you still helped me out on that, really appreciate it

 

This is great! Thank you!

 

Still a great help

 

Agreed

 

Unity 2020 update - 'error CS1955: Non-invocable member 'Vector3' cannot be used like a method.'
Fixed with: (C#)
Vector3 screenPoint = Input.mousePosition;
screenPoint.z = 10.0f; //distance of the plane from the camera
transform.position = Camera.main.ScreenToWorldPoint(screenPoint);

 

I was searching this for hours... Thanks !!!!

 

Or just change:

var screenPoint = Vector3(Input.mousePosition);

to

var screenPoint = (Vector3)Input.mousePosition;

 

Sorry for necroing but this page is in top search for this particular problem.
For anyone encountering this in future with Canvas Scaler:

Code (CSharp):

1. public void OnDrag(PointerEventData eventData)
2. {
3.     myRectTransform.anchoredPosition = eventData.position / myCanvas.scaleFactor;
4. }

works if myRectTransform has minMax Anchors set to (0,0) and its parent is in Canvas (0,0) point