Duly noted ;)
Sent from my iPhone
On May 6, 2010, at 20:06, "Jordan K. Hubbard" <[email protected]> wrote:
On May 6, 2010, at 8:03 PM, Laurent Sansonetti wrote:
You're right, the Pointer class must be used. Sorry about the lack
of documentation. Here is a snippet that might work:
# n must be defined
origins = Pointer.new(CGPoint.type, n) # this builds a pointer to n
times CGPoint
CTFrameGetLineOrigins(frame, CFRange.new(0, n), origins)
2. How to access the individual CGPoints in the returned buffer?
This is not an Objective-C / MacRuby array object. It is just an
address to a buffer. Easy to do in C, but how to do in MacRuby?
Using Pointer#[] you can simply dereference a given slot in the
pointer, as in C.
n.times { |i| p origins[i] } # should print nth points
Let me know if this works or not for you.
If it does, I can see this being a useful entry in Matt's book!
- Jordan
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