On Sat, Sep 01, 2007 at 12:54:13PM +1200, Greg Ewing wrote: > Brian Fisher wrote: > > With regards to getting the min rect - basically various art > >production tools tend to produce output where the meaningful content > >(places where non-zero color and/or alpha values) are present is a > >subset of the entire image. > > This sounds to me like something that ought to be done > once when you're creating the artwork, using some suitable > tool, before the image even gets into your game. I can't > see a reason for doing it at run time. > > If it's an image generated dynamically during the game, > however, that might be different, although I can't remember > ever needing something like this.
Artwork can change many times during the development of a game, and as an artist, I often like to keep a margin around the edges of an image. It can make changes easier. --- James
