Trouble with graphics display in OS X
jhurley at infostations.com
Tue Jan 11 22:12:55 EST 2005
I have been having a great deal of trouble switching over to OS X.
The following handler illustrates my problem:
set the loc of grc "ball" to 100, 100
put .1 into dx
put .1 into dy
put the loc of grc "ball" into tBallLoc
add dx to item 1 of tBallLoc
add dy to item 2 of tBallLoc
set the loc of grc "ball" to tBallLoc
--wait 1 millisec
set the loc of grc "ball" to 100,100
In OS 9, this causes the ball graphic to slide smoothly along a 45
degree line. In OS X the ball moves erratically to two or three spots
on the line and then quickly back to the starting location.
(Since the loc consists only of integers, this should move the ball
smoothly through points 100,100 to 101,101 to 102,102 ... 600,600.)
If I insert the "wait 1 millisec" the motion is smooth, but slow. It
takes, of course, 5 seconds plus.
Is this a known problem in OS X?
I am running RR 2.2.1 and OS X 2.3 on a PowerBook G4
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