Welcome posted by Joseph Crawford @ Sat, 08 Nov 2008 15:41:52 -0000

Joseph Crawford — Sat, 08 Nov 2008 15:41:52 -0000

It would be nice to have these in HD so that I could have it fill my screen on the cinema displays

Possible Episode 7? posted by Bill Dudney @ Wed, 15 Oct 2008 12:48:49 -0000

Bill Dudney — Wed, 15 Oct 2008 12:48:49 -0000

Hi Nicholas,

Thanks for your interest!

I am planning on doing another episode for this series that takes you through porting to the phone. I will likely also do a similar series on doing other 3D effects with CA on the phone.

My current plan is to get started on these screen casts the first week in November, delivery on the site takes some time so I can’t speculate on release dates.

Possible Episode 7? posted by Nicholas Hilem @ Wed, 15 Oct 2008 05:32:59 -0000

Nicholas Hilem — Wed, 15 Oct 2008 05:32:59 -0000

I was wondering if someone could talk on the steps one would have to go to to port these examples to the iPhone.
Biggest differences, etc…?

I’m able to get the examples running after a few workarounds but the first example in particular crashes upon start-up.

Will there be Episode 6 soon? posted by Bill Dudney @ Wed, 03 Sep 2008 04:30:03 -0000

Bill Dudney — Wed, 03 Sep 2008 04:30:03 -0000

Hi Rajesh,

Ok the episode is uploading now, should be done post production in a matter of days.

Thanks again for your support!

Will there be Episode 6 soon? posted by Bill Dudney @ Fri, 29 Aug 2008 22:34:55 -0000

Bill Dudney — Fri, 29 Aug 2008 22:34:55 -0000

Hi Rajesh,

Grrrr, plagued by tech problems this week in getting the screencast done. I have it all worked out now and the code written so I’m hoping to get the recording done this weekend. I will post back here as soon as I’m done. Thx again!

TTFN

Will there be Episode 6 soon? posted by Bill Dudney @ Mon, 25 Aug 2008 17:02:56 -0000

Bill Dudney — Mon, 25 Aug 2008 17:02:56 -0000

Hi Rajesh,

So sorry that I’m so late! I got hammered with several projects at once and this one is the one that suffered. I’m hoping to complete the recording this week so it should show up shortly after that depending on our post prod people’s schedule.

Thanks for the kind words!

TTFN

Will there be Episode 6 soon? posted by rajesh @ Mon, 25 Aug 2008 16:40:01 -0000

rajesh — Mon, 25 Aug 2008 16:40:01 -0000

We have enjoyed all your episodes so far. Any news about the final Episode 6? the projected date was July 21st!, are there any new dates planned ? please let us know. BTW great games on the App store, keep it up.

CGBitmapContextCreate posted by michael prenez-isbell @ Sat, 19 Jul 2008 01:55:15 -0000

michael prenez-isbell — Sat, 19 Jul 2008 01:55:15 -0000

CGContextRef context = CGBitmapContextCreate(NULL, rect.size.width, rect.size.height,8, 4, colorSpace, kCGImageAlphaPremultipliedFirst);

Hi Bill,

This line wasn’t visible on the screen in your first video. can you explain the logic behind calculating row bytes? In the online examples I’ve located different algorithms seem to be used.

Thanks! Hmm, maybe the code is available, I’ll check…

Michael Prenez-Isbell

Any thoughts on Ruby Core Animation Video posted by Bill Dudney @ Tue, 08 Jul 2008 19:35:23 -0000

Bill Dudney — Tue, 08 Jul 2008 19:35:23 -0000

Hi Dan,

I’m not planning on doing anything like that but Brian might be.

Check his book here;

http://www.pragprog.com/titles/bmrc/rubycocoa

Good luck!

Any thoughts on Ruby Core Animation Video posted by dan sinclair @ Mon, 07 Jul 2008 17:40:06 -0000

dan sinclair — Mon, 07 Jul 2008 17:40:06 -0000

As a suggestion, once the Coverflow application is done, it would be nice to get an example of doing something similar in RubyCocoa.

While RubyCocoa isn’t too difficult to figure out, there are always a few gotchas lurking under the hood. Would be nice to have a screencast that can give some information around the process of porting the coverflow application (or any application for that matter).

Stage 4 Sample Code posted by Bill Dudney @ Fri, 04 Jul 2008 21:45:26 -0000

Bill Dudney — Fri, 04 Jul 2008 21:45:26 -0000

Hi David! Sorry for the confusion. Episode 5 is almost ready and I hope to have 6 in about a week or so.

Thanks!

Stage 4 Sample Code posted by David Rutgos @ Fri, 04 Jul 2008 19:06:01 -0000

David Rutgos — Fri, 04 Jul 2008 19:06:01 -0000

OK, just an update, I didn’t realize that episodes 5 and 6 are still under development. So my next question is, when will they be ready :)

Stage 4 Sample Code posted by David Rutgos @ Fri, 04 Jul 2008 00:56:30 -0000

David Rutgos — Fri, 04 Jul 2008 00:56:30 -0000

Hi,

I just purchased the core animation episodes 1 through 4 and of course I couldn’t wait to see the episodes first before running the samples and it looks like stage 4 isn’t the cover flow application that I thought it was going to be. I’m assuming I’m doing something wrong and so I will touch base again after watching all four episodes. However, if you have a moment can you take a quick look? Thanks! Basically I was expecting to see the images in stage four look the same way as in the 3 minute intro that I watched before buying the episodes.

Thanks and have a great 4th of July!

David

Welcome posted by Mike Clark @ Mon, 09 Jun 2008 16:55:22 -0000

Mike Clark — Mon, 09 Jun 2008 16:55:22 -0000

David: Thanks for letting us know about this. I’ve remastered the sample video at a higher frame rate and using H.264 to decrease the file size significantly.

Please let me know if you notice any other frame rate problems.

Thanks again!

Mike

Welcome posted by David Arter @ Wed, 04 Jun 2008 15:12:11 -0000

David Arter — Wed, 04 Jun 2008 15:12:11 -0000

Hi Bill,

Thanks for the quick reply.
The bit that really suffers is about 28 seconds into the free preview video, when you’re flicking between photos in the CoverFlow-style view. Pulling up the inspector in QuickTime shows a frame rate of ~3FPS at that point in the video.

Is the preview video encoded at a lower frame rate than the actual episodes?

Welcome posted by Bill Dudney @ Wed, 04 Jun 2008 11:50:26 -0000

Bill Dudney — Wed, 04 Jun 2008 11:50:26 -0000

Hi David,

The framerate on the videos is currently 15 fps.

We spent a lot of time debating and trying various framereates and 15 seemed like a good compromise. When I was reviewing them before pushing I figured that the fps was enough for you to see the effect.

Is there some part of one of the episodes in particular that fails to illustrate the effect? Maybe there is something we could tweak that section (or sections) in the post prod phase to make that better. We’d be glad to try it out.

Thanks for the kind words and for letting me know.

Welcome posted by David Arter @ Wed, 04 Jun 2008 10:52:31 -0000

David Arter — Wed, 04 Jun 2008 10:52:31 -0000

Thanks for producing these, they’re going to be a great companion to the book.
However, I watched the sample 3-minute screencast and I’ve got to ask: Do all of the screencasts have such low framerates? I can understand that you want to keep the file size low without introducing too many compression artifacts on each frame, but doesn’t illustrating a smooth animation with a 3FPS video kind of miss the point?

Welcome posted by Bill Dudney @ Tue, 27 May 2008 16:36:05 -0000

Bill Dudney — Tue, 27 May 2008 16:36:05 -0000

Hi All,

Thanks for checking out the Core Animation screencast. I’m really excited about this new way to deliver content. This is a whole new way to explore Core Animation together. I’m really looking forward to it!

If you have any questions or comments feel free to post them here.

Happy Viewing,

Bill Dudney
http://bill.dudney.net/roller/objc

Recent Posts in Creating a Compelling User Interface with Core Animation | Pragmatic Forums

Welcome posted by Joseph Crawford @ Sat, 08 Nov 2008 15:41:52 -0000

Possible Episode 7? posted by Bill Dudney @ Wed, 15 Oct 2008 12:48:49 -0000

Possible Episode 7? posted by Nicholas Hilem @ Wed, 15 Oct 2008 05:32:59 -0000

Will there be Episode 6 soon? posted by Bill Dudney @ Wed, 03 Sep 2008 04:30:03 -0000

Will there be Episode 6 soon? posted by Bill Dudney @ Fri, 29 Aug 2008 22:34:55 -0000

Will there be Episode 6 soon? posted by Bill Dudney @ Mon, 25 Aug 2008 17:02:56 -0000

Will there be Episode 6 soon? posted by rajesh @ Mon, 25 Aug 2008 16:40:01 -0000

CGBitmapContextCreate posted by michael prenez-isbell @ Sat, 19 Jul 2008 01:55:15 -0000

Any thoughts on Ruby Core Animation Video posted by Bill Dudney @ Tue, 08 Jul 2008 19:35:23 -0000

Any thoughts on Ruby Core Animation Video posted by dan sinclair @ Mon, 07 Jul 2008 17:40:06 -0000

Stage 4 Sample Code posted by Bill Dudney @ Fri, 04 Jul 2008 21:45:26 -0000

Stage 4 Sample Code posted by David Rutgos @ Fri, 04 Jul 2008 19:06:01 -0000

Stage 4 Sample Code posted by David Rutgos @ Fri, 04 Jul 2008 00:56:30 -0000

Welcome posted by Mike Clark @ Mon, 09 Jun 2008 16:55:22 -0000

Welcome posted by David Arter @ Wed, 04 Jun 2008 15:12:11 -0000

Welcome posted by Bill Dudney @ Wed, 04 Jun 2008 11:50:26 -0000

Welcome posted by David Arter @ Wed, 04 Jun 2008 10:52:31 -0000

Welcome posted by Bill Dudney @ Tue, 27 May 2008 16:36:05 -0000