Flassari.is

When doing 2D games in Unity it is often handy to know where the borders of the screen are in units so one can for example spawn units on the edge of the screen or detect when something leaves it.

Fortunately it’s easy to figure out when using orthographic camera.

Camera.main.orthographicSize is always half of the total screen height, with the width changing with the aspect ratio. You can get the top or bottom coordinates by adding/subtracting it to/from the camera’s y position.

For the width you can then multiply the aspect ratio with the orthographic size,
camera.orthographicSize * Screen.width/Screen.height , to get half of the total screen width.

You can then get the x position of the screen’s left border like this:

float leftSideOfScreen = Camera.main.transform.position.x - Camera.main.orthographicSize * Screen.width / Screen.height;

I’ve noticed recently that Firefox has started showing a 1px dotted border around flash objects when I click on them. It didn’t bother me enough to look for a solution, but today the solution found me.
In my rss reader a blog post from FlashComGuru pops up, showing how to get rid of this annoyance, pasted here for your convenience:

Simply add this to your page’s stylesheet:

a:focus, object:focus { outline: none; -moz-outline-style: none; }