Create a Air project on Flex Builder 3, add “-swf-version=13 -static-link-runtime-shared-libraries=true” to additional compiler arguments on project properties . Add “<renderMode>gpu</renderMode>” below “<initialWindow>” on app.xml and you are ready to go. You can download here a simple example of a pac-man style game.

Note: to test your application install adobe air 3 & flash player 11

var version:String = UITextField.mx_internal::VERSION;
trace(version);

-------------------------------
result = 3.6.0.12937

I tried the following formula to get 2 decimal points precision int(152.2*100)/100 but that gave me the wrong result (151.9) so I found this little gem at actionscript-flash-guru.com that was a lifesaver

private function setPrecision(number:Number, precision:int):Number {
precision = Math.pow(10, precision);
return (Math.round(number * precision)/precision);
}

1. Open a console and go to the directory of your project

2. Export the PATH to include the flex sdk binaries, e.g. run:

export PATH=/Users/youruser/Desktop/yourproject/flexsdk/4.0.0/bin:$PATH

3. Invoke the compiler to produce the swf, e.g. run:

	mxmlc -static-link-runtime-shared-libraries \
	-sp ../externals/externlib \
	-l example.swc ../../flexsdk/4.0.0/frameworks/libs \
			 ../../flexsdk/4.0.0/frameworks/locale/en_US \
	-output output.swf \
	-locale en_US \
	-use-network=false \
	-file-specs MyExampleClass.as

Note: For those of you that don't know it already, the Flex SDK is a free of charge Actionscript3 library that allows the development of Flex & Actionscript 3-based applications, without the need to purchase Flex Builder/Flash Builder.

Sometime along the development of the application I came across the need to convert 3D coordinates into 2D screen coordinates and also the opposite. It's nothing new and it's already implemented in papervision, but since it took me a little while to find it, I decided to share it.

Getting the 2D Screen coordinates from a DisplayObject3D

Since papervision 2.0 that every DisplayObject3D has a property called "screen", that will return the coordinate of the object on screen. Whenever I tried to access the screen property the number3D I got back was always (0,0,0). Probably because it's an expensive operation and it's something you only need sporadically, papervision will not calculate this automatically. You need to ask papervision yourself to calculate this coordinates. To do so, just use the "calculateScreenCoords" of the do3d

myDisplayObject3D.calculateScreenCoords(camera)

Now when you try to access the "screen" property you will get the number3D with the screen coordinates for your DisplayObject3D.

Getting the 3D coordinates from a 2D point (x,y)

For this one I found a great post by zupko that tells you exactly what you need to do.
In a nutshell, you need to take your 2D coordinates (x,y) and convert them into a direction vector. Having the vector and the camera position you can create a ray (line) that will go from the camera into infinity. Next you need to specify the Z, or in another words, where do you want to stop on that line. Zupko uses a 3D plane to do that using the "getIntersectionLineNumbers"

Just remember papervision's 3D Zero (0,0,0) is at the center of the screen and not on the upper left corner like the 2D Zero (0,0)

A potential vulnerability has been identified in Adobe Flash Player 10.0.12.36 and earlier that could allow an attacker who successfully exploits this potential vulnerability to take control of the affected system. A malicious SWF must be loaded in Flash Player by the user for an attacker to exploit this potential vulnerability. Additional vulnerabilities have been addressed in this update. Adobe recommends users update to the most current version of Flash Player available for their platform.

More information about this security vulnerability is available at:

http://www.adobe.com/support/security/bulletins/apsb09-01.html

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pv3d_gallery_as3project

Example
Source Zip