Question

I have an object which I want to rotate between -45 and 45 degrees, but I want that to be based on the mouse position. If the mouse position is at zero, I want the object to be at -45 degrees. If the mouse position is at the stageWidth, I want the object to be at 45 degrees. How would I accomplish this?

Answer 1

Ignoring the “random” bit of your title, which seems not to apply to the actual question:

var angle:Number = (e.stageX*90/stage.stageWidth) - 45;

If you want to limit it, you can use min and max:

angle=Math.max(angle,-45);
angle=Math.min(angle,45);

or conditionals like this:

if (angle<-45) angle = -45
else if (angle>45) angle = 45;

or you can restrict the x value to the range (0 to stageWidth) before doing the translation.