Re: Converting HIPoints to CGPoints/NSPoints in global space?
Re: Converting HIPoints to CGPoints/NSPoints in global space?
- Subject: Re: Converting HIPoints to CGPoints/NSPoints in global space?
- From: Shawn Erickson <email@hidden>
- Date: Sun, 12 Feb 2006 13:56:55 -0800
Are you really dealing with screen coordinates? In general more
coordinates you deal with are local view coordinates.
-Shawn
On Feb 12, 2006, at 1:16 PM, Dave MacLachlan wrote:
Sorry...
HIPoints in general are relative to 0,0 in the upper left.
NSPoints (and CGPoints) are relative to 0,0 in the lower left.
so an HIPoint at x,y coordinates is equivalent to an NSPoint at
x,displaysheight - y
The question is an easy way of figuring out exactly how high the
display height is, especially in the case of multiple monitors.
Currently I'm looping through the displays, but there's got to be a
better way of doing it.
Cheers,
Dave
On Feb 11, 2006, at 9:31 AM, Scott Thompson wrote:
On Feb 10, 2006, at 4:50 PM, Dave MacLachlan wrote:
Is there a good way to convert NSPoints to HIPoints and back
again safely?
I see HIPointConvert, but there doesn't seem to be a "cocoa"
coordinate space. I can write a routine iterating through all the
displays, and finding the lowest left hand corner, but was
wondering if anyone knew of a better way.
I'm afraid I don't understand your question. NSPoints and
HIPoints are both "just points with floating point components".
I presume that you are trying to convert points between two
coordinate spaces, but it's not clear exactly which two coordinate
spaces you are interested in.
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