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Hello any one knows a good tutorial where i can find a pointer to fire/flame effects on the iphone. i know i will have to use opengl but got no clue where to start.
Cheers.
You would probably need a particle engine for this. If you wish to learn to create such effects yourself, it might be tough. You can instead use other frameworks like cocos2d for iPhone. But if you want to do it in pure openGl, search on the lines of 'particle engine / particle generation on iphone' on stackoverflow or even google. You'll get many good pointers. Good Luck.
COCOS2D has a great particle emitter you can use. You can also try Corona for iPhone which is great.
Here's a link to a page that has a particle effect tutorial. This site use to have a fire effect article but the link was removed. This answer use to have the old link.
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Lately I'm interested in VR and I decided to learn more about it and technologies beyond this.
I also have a background of Mathematic science from my university field.(Applied Math.)
Can anyone suggest me some article or book or anything to learn more?
Free references preferred.
Thank you.
I would suggest you start by actually making things in VR. To read about it and to experience it are completely different things. I personally work with Oculus Rift. It is easy to develop for it because of its integration with various game engines. But as a cheaper option you could get started with Google Cardboard.
If you want to read up about the core technology behind VR, I would suggest start by reading about Computer Graphics. After you have a grip on that you can start to explore other topics for example how tracking works, issues of FOV etc.
For readings about Graphics, I would suggest you have a look at this thread.
https://gamedev.stackexchange.com/questions/12299/what-are-some-good-books-which-detail-the-fundamentals-of-graphics-processing
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are there any image effects (e.g. lomo, watercolor, sketch ...etc) libries can be used on mobile device and suitable for mobile device?
There are libraries like JJIL, simple-iphone-image-processing, JH labs, imageMagick porting to iphone and opencv have been mentioned in various previous posts.
I want libraries that I don't need to care about the algorithm of effect, but lots of libraries mentioned above are this type of libraries.
What I need are libraries that already have done effects functions and I just call the functions to apply effects on photos (It is ok to set parameters and attributes by myself when I use it).
Are there any more suggestions?
Free is good, commercial would be fine.
Thank you.
You could try the effects API from Aviary. Here: http://developers.aviary.com/
I never used it though, so I can't say if that's exactly what you are looking for.
Potentially worth your while:
OpenCV
Simple iPhone Image Processing
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Does anybody know which,currently,is the best library for realizing a real time face-tracking solution for iPhone? I've done a research but I've found quite old articles about OpenCV portings. I would like to know if there is any specific,reliable,fast (and possibly free) AR solution for overlay in real time an image to the face in iPhone camera Video Stream (not simply a static image)
Any help (link,tutorial) would be great.
Thanks everybody!!
Elos
iOS 5 brings facial recognition as a native feature.
Basically you just have to configure an object to act as your the video output stream’s delegate (could be your controller, for example) and use a CIDetector object to process this stream (which is a class available only in iOS 5).
This CIDetector object will look for the faces in each of your video's frame and return a CIFaceFeature object with several information about the faces found, such as the eyes and mounth position and also the bounds (the rectangle that the face was found inside).
You can check this blog for more implementation details:
https://web.archive.org/web/20130908115815/http://i.ndigo.com.br/2012/01/ios-facial-recognition/
opencv is the best i think.
checkout this tutorial:
http://www.morethantechnical.com/2009/08/09/near-realtime-face-detection-on-the-iphone-w-opencv-port-wcodevideo/
https://github.com/beetlebugorg/PictureMe
a starting point... he's using opencv.
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I want to study Cocos2d, seems it's a good framework for iPhone game programming. So is there any Cocos2d based open-source iPhone game exist?
The place to ask this is on cocos2d google group.
I believe there are several games and game demos available to study. The developer is pretty active with the framework although he is currently on vacation for the holidays.
Tweejump
http://tweejump.com/
http://github.com/haqu/tweejump/tree/master
ABC123
http://kwigbo.com/wp/2009/05/02/abc123-iphone-cocos2d-game-open-source/
Here's a list of a ton of examples, all Cocos2d based:
http://www.cocos2d-iphone.org/forum/topic/24798
direct link to downloads page:
https://docs.google.com/spreadsheet/ccc?key=0Ap9yzw5RaZIZdFNoWEtvTXdfbThHM0hJUGxWUHZwSGc#gid=0
Note: Click on the "DropBox" links to get the source without having to go through lots of clicks at some other site.
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I am looking for an example that renders an interactive earth similar to the one in the Smule products.
Someone just pointed me to this question. I have one!
It's called WhirlyGlobe and it's built specifically for this purpose. Runs on ios, uses a combo of Objective-C and C++ and is very Cocoa Touch friendly. Uses delegates for camera motion, multithreaded, all that good stuff.
Oh, and it's freely available under the Apache2 license.
Details can be found here:
http://mousebird.github.io/WhirlyGlobe/
I can't offer any samples, but Dragon Forged Software sells a prepackaged OpenGL ES Globe for the iPhone. http://dragonforged.com/consult.shtml
A company name Clever Coding offers a opengl implementation of a 3D globe for sale at http://www.clevercoding.com/iPhone3Dglobe.php