rsherm@umbio.MIAMI.EDU (Roby Sherman) (09/29/88)
I've been working on a routine to PPToPort an image to the iigs screen.
Unfortunatly, the image does not begin in the upper left hand corner. I've
been setting my source rects to describe my image, but PPToPort keeps starting
with the upper left hand corner.. What am I doing wrong??
Thanks in advance,
Roby
--
Roby Sherman UUCP Access : {gould!uunet}!umbio!rsherm
Internet : rsherm%umbio@umigw.miami.edu
"Pulver the river and Frotz the woods... " -- A Zorkian Xmas Tree Monsterkeith@Apple.COM (Keith Rollin) (09/30/88)
In article <676@umbio.MIAMI.EDU> rsherm@umbio.MIAMI.EDU (Roby Sherman) writes: >I've been working on a routine to PPToPort an image to the iigs screen. >Unfortunatly, the image does not begin in the upper left hand corner. I've >been setting my source rects to describe my image, but PPToPort keeps starting >with the upper left hand corner.. What am I doing wrong?? > >Thanks in advance, > Roby > Roby, There isn't anything tricky with using PPToPort, so it's likely that there is a bug in your parameters rather an anomaly (or bug) in PPToPort. You talk about the source rectangle, but not the source port or destination rectangle. Is it possible that the bounds- and port-rect of the source GrafPort are causing the foulup? Is the destination point specified as X&Y coordinates on the stack, and not as a pointer to a point or rectangle? Keith Rollin amdahl\ Developer Technical Support pyramid!sun !apple!keith Apple Computer decwrl/ "You can do what you want to me, but leave my computer alone!"
rsherm@umbio.MIAMI.EDU (Roby Sherman) (09/30/88)
In article <17987@apple.Apple.COM>, keith@Apple.COM (Keith Rollin) writes: > In article <676@umbio.MIAMI.EDU> rsherm@umbio.MIAMI.EDU (Roby Sherman) writes: > >I've been working on a routine to PPToPort an image to the iigs screen. > >Unfortunatly, the image does not begin in the upper left hand corner. I've > >been setting my source rects to describe my image, but PPToPort keeps starting > >with the upper left hand corner.. What am I doing wrong?? > > There isn't anything tricky with using PPToPort, so it's likely that there > is a bug in your parameters rather an anomaly (or bug) in PPToPort. > > You talk about the source rectangle, but not the source port or destination > rectangle. Is it possible that the bounds- and port-rect of the source > GrafPort are causing the foulup? Is the destination point specified as X&Y > coordinates on the stack, and not as a pointer to a point or rectangle? Keith, Let me rephrase my problem a little bit. What I'm basically trying to do is PPtoPort certain portions of an image onto the screen at various locations. Although the image is coming up in the right places, and is the correct size, it always ports the part of the image that begins in the upper-left hand corner.. I've been tweeking both my LocInfo record's Source Rect and/or PPtoPort's Ptr to Rect giving the information about the rects as being at places other than the upper-left hand corner.. it's weird.. If you still don't catch what I'm spuwing out, I'll post a portion of my source code.. Roby -- Roby Sherman UUCP Access : {gould!uunet}!umbio!rsherm Internet : rsherm%umbio@umigw.miami.edu "Pulver the river and Frotz the woods... " -- A Zorkian Xmas Tree Monster