Creating an CGAffineTransform From Sample Points
Creating an CGAffineTransform From Sample Points
- Subject: Creating an CGAffineTransform From Sample Points
- From: "Bridger Maxwell" <email@hidden>
- Date: Sun, 17 Feb 2008 21:47:57 -0700
Hello, I have a few questions on CGAffineTransform. I would like to
construct one to represent a calibration from x y values from a camera to x
y values on a screen. If I were to take coordinate point pairs from each
space, (i.e. (x1,y1) = (x2,y2)), how man pairs of sample points would be
needed to create a CGAffineTransform matrix? I have read three, but I don't
know if this is correct. I would like to make a function that takes a few
coordinate point pairs from the input space and output space, and then makes
a CGAffineTransform from those. Does anyone know of an existing way to do
this? I have been searching around and can't find anything.
Thank You,
Bridger Maxwell
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