keeping crosshair on screen

My crosshair is made with a couple of different vectors that is placed in a screen space camera canvas. I have tried to clamp it with different values to clamp to, none have worked. Anyone know how I can clamp it? And also does clamping something effect rigidbody velocity?

 

I like to handle this by anchoring a GameObject in the UI at LowerLeft, and then one at UpperRight.

Then my script just has public Transform references to each of those and I use their positions.

Code (csharp):

1. float croppedX = Mathf.Clamp( mouseX, LowerLeft.position.x, UpperRight.position.x);
2.  
3. // ditto above for Y...
4.  
5. // and now use croppedX/croppedY to position your crosshair.
6.  

Super-simple, plus the cropping instantly changes if the screen changes shape. You can also inset them slightly so that the entire + of the crosshair is onscreen, if you prefer.

 

Would I turn the new x and y into a Vector2 and put that as the transform?

 

Yes! I left that part out to sorta make it clear how I was clamping X. Will edit.