time@tbomb.ice.com (Tim Endres) (12/23/90)
I have been noticing more and more lately these 'acur' animated cursor resources. Is this just something that can be used in place of MPW's cursors for RotateCursor() calls, or is this something that will animate cursors "automatically" without making these rotate calls? tim.
daven@svc.portal.com (12/24/90)
In article <1CE00001.y0hdqe@tbomb.ice.com> time@tbomb.ice.com writes: > >I have been noticing more and more lately these 'acur' animated cursor >resources. Is this just something that can be used in place of MPW's >cursors for RotateCursor() calls, or is this something that will animate >cursors "automatically" without making these rotate calls? Tim, A quick check of spInsideMac and MacTechNotes stacks show no references to the 'acur' resource. I don't believe that Apple has ever documented the use of 'acur', even though the Finder uses it. Instead, I think there was an article a year or two ago in MacTutor that described the 'acur' and how to use it in your own applications. My recollection is that the 'acur' resource is used a nothing more than a convience. You still have to write the cursor animation code yourself. However, once you've done so, it allows others to change the animated cursor to one of their liking. I think the 'acur' tells you how many frames are in the animated sequence, which cursor resources are involved, and the delay required befor showing the next frame. -- ------------------------------------------------------------------------------- Dave Newman | daven@svc.portal.com | AppleLink: D0025 Sofware Ventures Corp. | AOL: MicroPhone | CIS: 76004,2161 Berkeley, CA 94705 | WELL: tinman@well.sf.ca.us | (415) 644-3232
n67786@lehtori.tut.fi (Nieminen Tero) (12/25/90)
In article <1990Dec24.040333.17271@svc.portal.com> daven@svc.portal.com writes:
A quick check of spInsideMac and MacTechNotes stacks show no references
to the 'acur' resource.
I don't believe that Apple has ever documented the use of 'acur', even
though the Finder uses it. Instead, I think there was an article a year or
two ago in MacTutor that described the 'acur' and how to use it in your
own applications.
My recollection is that the 'acur' resource is used a nothing more than
a convience. You still have to write the cursor animation code yourself.
However, once you've done so, it allows others to change the animated
cursor to one of their liking.
I think the 'acur' tells you how many frames are in the animated sequence,
which cursor resources are involved, and the delay required befor showing
the next frame.
I remember thet the cursor animation was somehow documented in the MPW
manual (both Pascal and C). Theese MPW languages have routines to use
these animated cursors also. I used animated "busy" cursor in one
program and if I remember correctly I used the MPW Pascal library
routines. As I remember it there's only one catch: They use global
memory so they cannot be used in DAs.
--
Tero Nieminen Tampere University of Technology
n67786@cc.tut.fi Tampere, Finland, EuropeLawson.English@p88.f15.n300.z1.fidonet.org (Lawson English) (12/27/90)
Nieminen Tero writes in a message to All
NT> I remember thet the cursor animation was somehow documented in
NT> the MPW manual (both Pascal and C). Theese MPW languages have
NT> routines to use these animated cursors also. I used animated
NT> "busy" cursor in one program and if I remember correctly I used
NT> the MPW Pascal library routines. As I remember it there's only
NT> one catch: They use global memory so they cannot be used in DAs.
What most people don't realize is that cursor animation can slow down a
program
by 20 to 90% (if it is totally without disk I/O).
Time the routine with and without cursor animation and see when the
performance
starts to noticibly degrade. You may need to modify just how often your beach
ball spins per widget processed.
Lawson
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Internet: Lawson.English@p88.f15.n300.z1.fidonet.orgLawson.English@f20.n226.z1.FIDONET.ORG (Lawson English) (12/27/90)
Reply-To: Lawson.English@p88.f15.n300.z1.fidonet.org
Nieminen Tero writes in a message to All
NT> I remember thet the cursor animation was somehow documented in
NT> the MPW manual (both Pascal and C). Theese MPW languages have
NT> routines to use these animated cursors also. I used animated
NT> "busy" cursor in one program and if I remember correctly I used
NT> the MPW Pascal library routines. As I remember it there's only
NT> one catch: They use global memory so they cannot be used in DAs.
What most people don't realize is that cursor animation can slow down a
program
by 20 to 90% (if it is totally without disk I/O).
Time the routine with and without cursor animation and see when the
performance
starts to noticibly degrade. You may need to modify just how often your beach
ball spins per widget processed.
Lawson
--
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INTERNET: Lawson.English@f20.n226.z1.FIDONET.ORGoster@well.sf.ca.us (David Phillip Oster) (01/10/91)
In article <638.2783DEF7@busker.fidonet.org> Lawson.English@f20.n226.z1.FIDONET.ORG (Lawson English) writes: >What most people don't realize is that cursor animation can slow down a >program >by 20 to 90% (if it is totally without disk I/O). If it slows the program down by even 1%, you are doing it wrong. Remember, you change the cursor picture maybe three times a second, and the machine executes almost a million times faster than that. -- -- David Phillip Oster - At least the government doesn't make death worse. -- oster@well.sf.ca.us = {backbone}!well!oster