Does an equation exist for rotating one point around another as though it was it's origin?

Eindoofus
Eindoofus used Ask the Experts™
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For example, neither point A or nor point B is on the origin and I would like to rotate point B around point A by any specified number degrees, and basically treat point A as though it were the origin.

Does an equation exist for rotating one point relative to another?
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"Does an equation exist for rotating one point relative to another?"
sure
make it a two step process.
1.  translate point A
1.   Rotate B about A
In the video,
    http://www.youtube.com/watch?v=iWxS2zpaRjk&feature=channel,
at 19:00 is a discussion of combining multiple homogeneous transformation matrices. At 20:50 is a discussion of rotating points about an arbitrary point (a,b).

If you prefer using an alternate form, then here is another video for you:
   http://www.youtube.com/watch?v=VziP-jctzns&feature=related
You may prefer this latter video since the presentation is typed up rather than hand-written.

For a specific example, you can see the result of this thread:
    http://rdsrc.us/Slssi1
Recommend split between the first two posts.
I agree. Phoffric is being generous. He put work into a series of answers which completely answered the question

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