Today I investigated a little of Action Script 3. What I really wanna do is an easy script to take a web camera snap shot. Coming from AS2 I was impressed about the EventListener present in AS3, like complete programming language (I'm thinking to Java or .NET) AS3 got the object listener which reacts to an Event.
The corelib project is an ActionScript 3 Library that contains a number of classes and utilities for working with ActionScript 3. These include classes for MD5 and SHA 1 hashing, Image encoders, and JSON serialization as well as general String, Number and Date APIs.
Download the library and copy the folder "/src/com" under your project's path or add the "/src/com" to the general adobe framework under "/Configuration/ActionScript 3.0/". Now you're ready to write your easy AS3 to grabbing the Web Camera Stream. I've built 3 buttons: SNAP (AS3 name: button1) which takes the image and interrupts the web camera stream to the otput video (AS3 name: video), RED (AS3 name: redButton) which drops the image and attaches the web camera stream to the output video and the GREEN (AS3 name: greenButton) which converts the image captured from "SNAP" to JPG and saves it through a php page. On practice:
import com.adobe.images.PNGEncoder;
//initialize ambient
redButton.visible = false;
greenButton.visible = false;
button1.visible = true;
var cam:Camera = Camera.getCamera();
cam.setQuality(0, 100);
//800x600, frame per second,
cam.setMode(800, 600, 24, true);
video.attachCamera(cam);
var ba:ByteArray = null;
button1.addEventListener(MouseEvent.CLICK,snap);
redButton.addEventListener(MouseEvent.CLICK,retake);
greenButton.addEventListener(MouseEvent.CLICK,ok);
function snap(e:MouseEvent):void{
var bmd:BitmapData = new BitmapData(video.width,video.height,false);
bmd.draw(video,new Matrix());
ba = PNGEncoder.encode(bmd);
video.attachCamera(null);
redButton.visible = true;
greenButton.visible = true;
button1.visible = false;
}
function ok(e:MouseEvent):void{
var header:URLRequestHeader = new URLRequestHeader("Content-type", "application/octet-stream");
var jpgURLRequest:URLRequest = new URLRequest("jpg_encoder_download.php?name=sketch.jpg");
jpgURLRequest.requestHeaders.push(header);
jpgURLRequest.method = URLRequestMethod.POST;
jpgURLRequest.data = ba;
navigateToURL(jpgURLRequest, "_blank");
video.attachCamera(cam);
redButton.visible = false;
greenButton.visible = false;
button1.visible = true;
}
function retake(e:MouseEvent):void{
video.attachCamera(cam);
redButton.visible = false;
greenButton.visible = false;
button1.visible = true;
}
stop();
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