Tag Archives: math

The mini project I picked as my first dip into AS3 was a short example that I had been planning for this blog, so here it is in AS3, instead of AS2 as I had originally planned.

The South Park Chin balls Flash app required that the user drag and zoom a loaded photo. Anyone who’s ever done this will know that you can’t just scale the picture around it’s registration point when you zoom. Why? because the centre point changes as you pan the image around. So the requirement in a nutshell is – to be able to scale a MovieClip around an arbitrary centre.

Sure, you could take the Russian doll approach with multiple clips inside clips, but that just ain’t cool! I thought I’d share the way I did it as it’s pretty concise. Continue reading…