Where is origin transformation in Sketch example?
Where is origin transformation in Sketch example?
- Subject: Where is origin transformation in Sketch example?
- From: Kevin Spraggs <email@hidden>
- Date: Wed, 7 Dec 2005 21:13:02 +0000
Evening/Morning/Afternoon* Chaps!
As a progressing newbie to this cocoa and Objective-C business, I
have moved from CoreData onto some simple graphics, and I am trying
to wrap my brain around Apple's Sketch example on Tiger. I thought
that I was progressing well, but I have one current nagging problem
with it: Where is the origin transformed from the bottom left to the
top left in the SKTGraphicView? I stumbled upon this fact, as I have
modified the Sketch example to have a zoom factor using NSView's
scaleUnitSquareToSize: method only to find that imported images do
not rescale accordingly due to the use of NSImage's
compositeToPoint:operation: in the SKTImage class. Replacing this
with the drawAtPoint:fromRect:operation:fraction: causes the images
to be rescaled correctly, but they then appear up-side-down.
So can any one help me, as I am sure that I am seeing trees, trees
and more trees but not the woods...
Thanks in advance,
Kevin.
* please select appropriately for your time zone.
"Kevin knows where it will all end up - where 'Kevin' is any random
entity that doesn't know nothin' about nothin'."
- Douglas Adams, Mostly Harmless
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