ScreenToWorldPoint gives far off results

[Supagoat]

I'm brand new (just bought tonight) to 2D Toolkit, and have only been using Unity for a week or so.  I'm still trying things out to see how they work.  I previously had a scene with cube prefabs with textures applied to them that I used a script to instantiate and put in the scene.  (Think procedurally created tile-based map)

I've switched to using 2D Toolkit sprites and have removed the old camera and put in a tk2dCamera.  Now when the script creates the map tiles they're too high by about 20 pixels (and maybe too far to the left too, haven't paid attention to that yet).

I tried using ScreenToWorldPoint as is suggested in the FAQ, but when I do they get positioned at around -900, -700 (and they aren't visible on screen) when I want them at 0,0 screen coordinates. 

Any ideas?

Thanks!

[unikronsoftware]

The coordinate system with the tk2dCamera is 1 world unit = 1 pixel, 0,0 at the bottom left of the screen. (The output is only valid in the game window due to a bug in Unity). So to position it at x:20 y:40, set screen position to 20,40,0. You don't need to use ScreenToWorldPoint here.

[Supagoat]

Ohhh, I was thinking it over and I'm 99% sure I know what I did wrong... I bet I had the sprite's origin point set to the middle, so of course if I put it a 64x64 sprite at 0,0 it won't be perfectly aligned with the  bottom of the screen.

BTW - I got the ScreenToWorldPoint info from http://unikronsoftware.com/2dtoolkit/forum/index.php/topic,32.0.html which should probably be updated.  (Newbies like me figure that the tk2d camera counts as an ortho camera)

Thanks!

[unikronsoftware]

I could've sworn I had updated to reflect the changes with tk2dCamera, but I will now. Thanks for bringing it to my attention.

[Kein]

The coordinate system with the tk2dCamera is 1 world unit = 1 pixel, 0,0 at the bottom left of the screen. (The output is only valid in the game window due to a bug in Unity). So to position it at x:20 y:40, set screen position to 20,40,0. You don't need to use ScreenToWorldPoint here.

So I'm confused, why in the hell is this even a thing? How to I recalculate Camera.main.ScreenToWorldPoint( Input.mousePosition) now?

[unikronsoftware]

Do the same thing. Screen to world point will give you the right position irrespective of how the camera is set up. Tk2d camera supports different set ups now as well - you're replying to a post that is 5 years old...

There was a bug in unity years ago, but that was fixed a log time ago.