Help with rotations

[MrChaz]

Hi all,

I'm having trouble wrapping my brain around how to do 2 rotations on a
sprite. What I want to be able to do is rotate the sprite about it's
origin (which is fine) but then I want to rotate it about another
point.
In this particular case I have a sprite that I want to be attached to
another sprite which is rotated. At the moment the pseudo code looks
a bit like this

translate to origin
rotate
translate to difference between our sprites location and 'anchor'
sprite location
rotate
translate to position

This, however isn't working as I hoped. Any suggestions?

-MrChaz

[Richard Taylor]

Hi,

Not sure if that's possible to do both things right now, as far as I remember (Ben/Jeremy reworked rotation stuff not long ago) it's either pivotal or central.

I am working on a rewrite of Sprite soon, I'll bear this in mind.

You might want to make the changes yourself to the engine if you need it

Richard

[Stephen Charman]

Turns out I was making life overly complicated - the pivots system will work just fine.

[Ben Davis]

Sorry for chiming in late here -- yes, the rotation pivot should be what you need.

[Richard Leggett]

Link here:

http://groups.google.com/group/android-developers/msg/6bff807612c4fbaf

[Stephen Charman]

That all looks pretty sensible and stuff (I think) that rokon is doing already.

On Fri, Jan 15, 2010 at 1:45 PM, Richard Leggett <richard...@gmail.com> wrote:

Link here:

http://groups.google.com/group/android-developers/msg/6bff807612c4fbaf

[Richard Taylor]

Yeah, I dont really think there is anything there that we aren't already doing - or wouldnt make any difference.

But, good to know anyway :)

[MrChaz]

Figured this out to go in here:

http://groups.google.com/group/android-developers/browse_thread/thread/57afe5120c24c371

looks like Droid likes depth_24 which is a pain because the Galaxy
likes depth_16...