Comments for randallagordon.com http://randallagordon.com/blog Home of the Ranbot 3000 Tue, 01 Feb 2011 16:08:57 +0000 hourly 1 http://wordpress.org/?v=3.3.1 Comment on RE:ality – Augmented Interior Design by randallagordon http://randallagordon.com/blog/2008/04/11/augmented-interior-design/comment-page-1/#comment-263 randallagordon Tue, 01 Feb 2011 16:08:57 +0000 http://randallagordon.com/2008/04/11/augmented-interior-design/#comment-263 That'd be my fault! ;) I switched servers last weekend and apparently didn't check things out throughly enough. I'll get them working again! That’d be my fault! ;)

I switched servers last weekend and apparently didn’t check things out throughly enough. I’ll get them working again!

]]> Comment on RE:ality – Augmented Interior Design by Amal Fullington http://randallagordon.com/blog/2008/04/11/augmented-interior-design/comment-page-1/#comment-262 Amal Fullington Tue, 01 Feb 2011 08:30:18 +0000 http://randallagordon.com/2008/04/11/augmented-interior-design/#comment-262 Hmm is anyone else encountering problems with the images on this blog loading? I'm trying to figure out if its a problem on my end or if it's the blog. Any feed-back would be greatly appreciated. Hmm is anyone else encountering problems with the images on this blog loading? I’m trying to figure out if its a problem on my end or if it’s the blog. Any feed-back would be greatly appreciated.

]]> Comment on Jaraoke – An HTML5 <audio> Tag Demo by randallagordon http://randallagordon.com/blog/2009/07/19/jaraoke-html5-audio-tag-demo/comment-page-1/#comment-261 randallagordon Wed, 19 Jan 2011 00:48:51 +0000 http://randallagordon.com/blog/?p=128#comment-261 This runs 100% within the browser. So long as the browser can run in the background, then yes, it would continue to play. I'm honestly not certain where multitasking stands at this point with iOS. Lack of support for background apps has always been one of the big reasons I won't go near iOS. This runs 100% within the browser. So long as the browser can run in the background, then yes, it would continue to play. I’m honestly not certain where multitasking stands at this point with iOS. Lack of support for background apps has always been one of the big reasons I won’t go near iOS.

]]> Comment on Jaraoke – An HTML5 <audio> Tag Demo by Landi http://randallagordon.com/blog/2009/07/19/jaraoke-html5-audio-tag-demo/comment-page-1/#comment-260 Landi Mon, 17 Jan 2011 09:59:33 +0000 http://randallagordon.com/blog/?p=128#comment-260 Nice,thank you. Does this soruce make it playing continuously audio iPhone app,while opening an other app. Nice,thank you.
Does this soruce make it playing continuously audio iPhone app,while opening an other app.

]]> Comment on Yep, I’m a Geek… An Ode to the HTC EVO by Jonas http://randallagordon.com/blog/2010/06/03/yep-im-a-geek-an-ode-to-the-htc-evo/comment-page-1/#comment-258 Jonas Thu, 15 Jul 2010 21:34:24 +0000 http://randallagordon.com/blog/?p=237#comment-258 Dork! Dork!

]]> Comment on Jaraoke – An HTML5 <audio> Tag Demo by Jaraoke – An HTML5 Tag Demo · HTML5 App http://randallagordon.com/blog/2009/07/19/jaraoke-html5-audio-tag-demo/comment-page-1/#comment-221 Jaraoke – An HTML5 Tag Demo · HTML5 App Fri, 07 May 2010 04:39:19 +0000 http://randallagordon.com/blog/?p=128#comment-221 [...] Jaraoke – An HTML5 <audio> Tag Demo [...] [...] Jaraoke – An HTML5 <audio> Tag Demo [...]

]]> Comment on Jaraoke – An HTML5 <audio> Tag Demo by randallagordon http://randallagordon.com/blog/2009/07/19/jaraoke-html5-audio-tag-demo/comment-page-1/#comment-218 randallagordon Mon, 08 Feb 2010 23:52:07 +0000 http://randallagordon.com/blog/?p=128#comment-218 There are indeed two playing simultaneously. The handleToggle function that gets called when you click "Toggle Vocals" simply sets the volume on one to 0 and the other to 1, effectively muting one (although technically mute is a separate state). I will note that there are all sorts of issues with synchronization. I attempted to write some crossfade functions, which worked fine, but threw the files out of sync... One of these days I may get around to tinkering with the concept more and figuring out why they get out of sync. Sample-level synchronization would be ideal for creating browser based music apps. There are indeed two playing simultaneously. The handleToggle function that gets called when you click “Toggle Vocals” simply sets the volume on one to 0 and the other to 1, effectively muting one (although technically mute is a separate state). I will note that there are all sorts of issues with synchronization. I attempted to write some crossfade functions, which worked fine, but threw the files out of sync… One of these days I may get around to tinkering with the concept more and figuring out why they get out of sync. Sample-level synchronization would be ideal for creating browser based music apps.

]]> Comment on Jaraoke – An HTML5 <audio> Tag Demo by Richard H http://randallagordon.com/blog/2009/07/19/jaraoke-html5-audio-tag-demo/comment-page-1/#comment-217 Richard H Mon, 08 Feb 2010 21:25:26 +0000 http://randallagordon.com/blog/?p=128#comment-217 cool but i thought it was playing 2 different audio tracks in sync. from what i can tell its just swapping out one track for another. Was looking for a way for javascript to play 2 separate tracks at the same/offset time i specify. essentially doing what smil does with javascript. cool but i thought it was playing 2 different audio tracks in sync. from what i can tell its just swapping out one track for another. Was looking for a way for javascript to play 2 separate tracks at the same/offset time i specify. essentially doing what smil does with javascript.

]]> Comment on webOS Development: AccelBall – A Practical Accelerometer Demo by randallagordon http://randallagordon.com/blog/2009/08/10/palm-pre-development-accellball-a-practical-accelerometer-demo/comment-page-1/#comment-214 randallagordon Thu, 22 Oct 2009 15:53:38 +0000 http://randallagordon.com/blog/?p=191#comment-214 Welcome, I'm glad it was helpful! It would depend on what you're doing, really. In this case, yes, because I'm not using the accelerometer data directly. It is simply used to adjust the "drift" variables which are what set the speed of the ball. Think in terms of, "last I knew, the phone was tilted <em>this</em> way, so I'm going to base my math off that to determine where the ball should move <em>now</em>." The animation occurs separately from the action of the accelerometer. With the code the way it is, if, for whatever reason, the accelerometer stopped giving the app data, the app would be stuck animating the ball with the last known acceleration. So you can update at whatever framerate you wish, it would simply require scaling the accelerometer data differently. But framerate and animation are another subject entirely! ;) The trick would be working out the math to suit your needs. With a little more time on the code it wouldn't be too difficult to allow the ball to perfectly match the Newtonian physics we all know and love! But, often for games, that isn't desirable and may make the game difficult to play. For applications where you're tracking g-force, precision is key (and 4Hz is not enough). On that end of things, there are ways to adjust the update frequency. With root permissions, simply set the value of "/sys/class/input/input5/poll_interval" to a higher value (specified in ms, as I recall). There was someone working on an extension to allow an app to set this explicitly, but it too requires root permissions to install, so this isn't something which can be relied upon outside the homebrew community. I've got my fingers crossed that Palm allows apps to set a higher refresh down the line...at which point, I'll likely write more on the subject. Start going to town fiddling with the numbers and you'll get a good idea of what's going on. Adjust the scaling, the framerate, etc. and see what happens! That will cement the ideas far better than I can explain with words. :) Welcome, I’m glad it was helpful!

It would depend on what you’re doing, really. In this case, yes, because I’m not using the accelerometer data directly. It is simply used to adjust the “drift” variables which are what set the speed of the ball. Think in terms of, “last I knew, the phone was tilted this way, so I’m going to base my math off that to determine where the ball should move now.”

The animation occurs separately from the action of the accelerometer. With the code the way it is, if, for whatever reason, the accelerometer stopped giving the app data, the app would be stuck animating the ball with the last known acceleration. So you can update at whatever framerate you wish, it would simply require scaling the accelerometer data differently. But framerate and animation are another subject entirely! ;)

The trick would be working out the math to suit your needs. With a little more time on the code it wouldn’t be too difficult to allow the ball to perfectly match the Newtonian physics we all know and love! But, often for games, that isn’t desirable and may make the game difficult to play. For applications where you’re tracking g-force, precision is key (and 4Hz is not enough).

On that end of things, there are ways to adjust the update frequency. With root permissions, simply set the value of “/sys/class/input/input5/poll_interval” to a higher value (specified in ms, as I recall). There was someone working on an extension to allow an app to set this explicitly, but it too requires root permissions to install, so this isn’t something which can be relied upon outside the homebrew community. I’ve got my fingers crossed that Palm allows apps to set a higher refresh down the line…at which point, I’ll likely write more on the subject.

Start going to town fiddling with the numbers and you’ll get a good idea of what’s going on. Adjust the scaling, the framerate, etc. and see what happens! That will cement the ideas far better than I can explain with words. :)

]]> Comment on webOS Development: AccelBall – A Practical Accelerometer Demo by hertzi http://randallagordon.com/blog/2009/08/10/palm-pre-development-accellball-a-practical-accelerometer-demo/comment-page-1/#comment-213 hertzi Thu, 22 Oct 2009 08:13:37 +0000 http://randallagordon.com/blog/?p=191#comment-213 Hi, thanks for that post - found it on twitter. After taking a quick look into your code I have a question. Since the accelerometer only works with 4 Hz (or did that change meanwhile?) does it make any sense to run the animation function 30 times per second? Hi,
thanks for that post – found it on twitter. After taking a quick look into your code I have a question. Since the accelerometer only works with 4 Hz (or did that change meanwhile?) does it make any sense to run the animation function 30 times per second?

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