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POBest process to show an OpenGL Animation in iPhone
 

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  1. POBest process to show an OpenGL Animation in iPhone
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    <p>I'm having issues being able to import a bone and skeletal animation from Maya to Blender to iPhone. Here's what I've done:</p> <ol> <li>install the <a href="http://sourceforge.net/projects/colladamaya/" rel="nofollow noreferrer">ColladaMaya</a> plugin to export a DAE for Blender to export</li> <li>used J<a href="http://iphonedevelopment.blogspot.com/2011/04/blender-257-objective-c-export-script.html" rel="nofollow noreferrer">eff LeMarche's script</a> to be able to export a single keyframe of the model and import this .h file into the iPhone game</li> <li>Setup the GLView using more of Jeff LeMarche's steps and rendered into our Game, so this model display next to the actual game (not in 3D). </li> <li>Researched <a href="http://code.google.com/p/oolongengine/" rel="nofollow noreferrer">oolongngine</a>, <a href="http://sio2interactive.com/" rel="nofollow noreferrer">sio2</a> (applied but haven't yet gotten e-mail back from them), other <a href="https://stackoverflow.com/questions/2122684/how-to-import-blender-3d-animation-to-iphone-opengl">SO q's</a> for solutions, including mine from <a href="https://gamedev.stackexchange.com/questions/10314/iphone-open-gl-es-using-fbx-how-do-i-import-animations-from-fbx-into-iphone">game dev</a></li> <li>Reviewed using <a href="http://books.google.com/books?id=gRPKugX5HuoC&amp;pg=PA64&amp;lpg=PA64&amp;dq=fbx%20to%20iphone%20pipeline&amp;source=bl&amp;ots=SqXEMWiY3h&amp;sig=hSnEeE-hW_nGZivyF0fn7vQow08&amp;hl=en&amp;ei=JfyQTdfpKKWD0QHXl4HiDg&amp;sa=X&amp;oi=book_result&amp;ct=result&amp;resnum=3&amp;ved=0CCUQ6AEwAg" rel="nofollow noreferrer">FBX SDK</a> content pipeline to dynamically generate class files for the animations. </li> </ol> <p>I can import a model and display it. A lot of these processes respond to that issue and leaving the developer to manipulate the game object programmatically. My main issue is finding the best, defined process of importing an animation into iphone next to the existing game? I don't need a whole game, or a whole scene, just one animating model and some steps to follow. </p> <p>This animation is meant to play in a loop. There are 3 more animations that will play on different game states (good move, bad move, etc.). So I'm concerned that LeMarche's keyframe solution (which basically means exporting EVERY keyframe as a .h file) will be incredibly time-intensive and memory-intensive. I'm definitely willing to do it, but after all the research I've done (additional links not included), I'm lost as to where to go next besides hand-exporting each keyframe and importing them.</p> <p><strong>EDIT:</strong></p> <p>I've added a bounty to this for anyone who can give me a clearly-defined process for importing an animation from a 3D application into iPhone. NOT the entire application itself (i.e. Unity, Sio2, etc.), but just showing a 3D overlay in an application (like an animating model next to a bejeweled-esqe game, not interacting with the world.)</p> <p>People keep saying, "create your own model loader". Are there scripts, examples, tutorials, anything that walks through this "model loader" process from EXPORTING from the 3D application (preferably Maya or Blender) and IMPORTING this animation and rendering it in Objective-C?</p>
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    1. COOff-hand I would also suggest exporting all the keyframes of your model. The amount of memory will most likely not be that much of an issue, assuming that your model is not composed of thousands of vertices. Animating the model programmatically might be an option for simple animations (rotations, transposing,...) but when it comes to more sophisticated things, I would rather use keyframes than building a full-fledged engine to get the job done.
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    2. COEach animation is 45 frames. I'm not even sure there is a "keyframe". So that's the best I can do?
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    3. CORegard each frame as being a "keyframe" and export all of those frames into your app using the options you already learned about.
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