// 360度パノラマ写真を変換するツールです
// bloggie http://www.amazon.co.jp/exec/obidos/ASIN/B003479I0Y/nitoyoncom-22/
// 用に作ってますが、他のカメラやレンズにも対応できると思います。
//----
// This tool convert 360 degree photo. 
// Click LOAD to convert your original 360 degree photo.
// Click PREVIEW to preview the result.
// Click SAVE to save the result to your computer.
package{
import flash.display.*;
import flash.text.*;
import flash.events.*;
import flash.system.LoaderContext;
import flash.net.*;
import mx.graphics.codec.JPEGEncoder;
import com.bit101.components.*;

public class Test extends Sprite{
    private const SIZE:Number = 450;

public function Test() {
        // load image
        var loader:Loader = new Loader();
        var context:LoaderContext = new LoaderContext(true);
        loader.load(new URLRequest("http://assets.wonderfl.net/images/related_images/b/bc/bc7b/bc7b2486d569ce97bd1218d3934743214c0c2c99"), context);
        loader.contentLoaderInfo.addEventListener("complete", loadCompleteHandler);

// start text
        var t:TextField = new TextField();
        t.text = "LOADING...";
        addChild(t);
    }

private function loadCompleteHandler(event:Event):void {
        var loaderInfo:LoaderInfo = LoaderInfo(event.target);
        var bmd:BitmapData = new BitmapData(loaderInfo.width, loaderInfo.height);
        bmd.draw(loaderInfo.loader);
        show(bmd);
    }

private function show(bmd:BitmapData):void {
		// remove all
		while (numChildren) { removeChildAt(0); }

// get size information
        var w:Number = bmd.width;
        var h:Number = bmd.height;
		var scale:Number = Math.min(SIZE / w, (SIZE - 100) / h);

var previewOrig:Sprite = addChild(new Sprite()) as Sprite;
		var previewRes:Sprite = addChild(new Sprite()) as Sprite;

var bmp:Bitmap = new Bitmap(bmd);
		previewOrig.addChild(bmp);
		bmp.scaleX = bmp.scaleY = scale;

var overlay:Sprite = new Sprite();
		overlay.scaleX = overlay.scaleY = scale;
		previewOrig.addChild(overlay);

var centerX:Number = w / 2 - 11;
		var centerY:Number = h / 2;
		var r1:Number = Math.min(96, h / 2);
		var r2:Number = Math.min(343, h / 2);
		var yy:int = h * scale;

var xSlider:HUISlider = new HUISlider(previewOrig, 0, yy += 16, "Center X", function(event:Event):void {
			centerX = w / 2 + xSlider.value;
			drawOverlay();
		});
		xSlider.width = SIZE;
		xSlider.minimum = -w / 2;
		xSlider.maximum = w / 2;
		xSlider.value = centerX - w / 2;

var ySlider:HUISlider = new HUISlider(previewOrig, 0, yy += 16, "Center Y", function(event:Event):void {
			centerY = h / 2 + ySlider.value;
			drawOverlay();
		});
		ySlider.width = SIZE;
		ySlider.minimum = -h / 2;
		ySlider.maximum = h / 2;
		ySlider.value = centerY - h / 2;

var r1Slider:HUISlider = new HUISlider(previewOrig, 0, yy += 16, "R1", function(event:Event):void {
			r1 = r1Slider.value;
			drawOverlay();
		});
		r1Slider.width = SIZE;
		r1Slider.minimum = 0;
		r1Slider.maximum = h / 2;
		r1Slider.value = r1;

var r2Slider:HUISlider = new HUISlider(previewOrig, 0, yy += 16, "R2", function(event:Event):void {
			r2 = r2Slider.value;
			drawOverlay();
		});
		r2Slider.width = SIZE;
		r2Slider.minimum = 0;
		r2Slider.maximum = h / 2;
		r2Slider.value = r2;

var loadButton:PushButton = new PushButton(this, 0, yy += 16, "LOAD", function(event:Event):void {
			var file:FileReference = new FileReference();
			file.addEventListener(Event.SELECT, function(e:Event):void {
				file.addEventListener(Event.COMPLETE, function(event:Event):void {
					var loader:Loader = new Loader();
			        loader.contentLoaderInfo.addEventListener("complete", loadCompleteHandler);
					loader.loadBytes(file.data);
				});
				file.load();
			});
			file.browse();
		});

var previewButton:PushButton = new PushButton(this, 110, yy, "PREVIEW", function(event:Event):void {
			if (previewRes.numChildren == 0) {
				var resultBmd:BitmapData = convert(bmd, r1, r2, centerX, centerY);

previewRes.scaleX = previewRes.scaleY = previewOrig.height / resultBmd.height;
				previewRes.addChild(new Bitmap(resultBmd));
				previewRes.addChild(new Bitmap(resultBmd)).x = -resultBmd.width;
				previewRes.addEventListener("enterFrame", function(event:Event):void {
					if (previewRes.numChildren == 0 || previewRes.parent == null) {
						previewRes.removeEventListener("enterFrame", arguments.callee);
						return;
					}

previewRes.x -= (stage.mouseX - SIZE / 2) / 10 - previewRes.width;
					previewRes.x %= previewRes.width / 2;
				});

previewButton.label = "CLOSE PREVIEW";
			} else {
				while (previewRes.numChildren) previewRes.removeChildAt(0);
				previewButton.label = "PREVIEW";
			}
		});

var saveButton:PushButton = new PushButton(this, 220, yy, "SAVE", function(event:Event):void {
			var resultBmd:BitmapData = convert(bmd, r1, r2, centerX, centerY);
			var enc:JPEGEncoder = new JPEGEncoder(90);
			new FileReference().save(enc.encode(resultBmd), "out.jpg");
		});

drawOverlay();

function drawOverlay():void {
			overlay.graphics.clear();
			overlay.graphics.lineStyle(0, 0xff0000);
			overlay.graphics.moveTo(centerX - 10, centerY - 10);
			overlay.graphics.lineTo(centerX + 10, centerY + 10);
			overlay.graphics.moveTo(centerX - 10, centerY + 10);
			overlay.graphics.lineTo(centerX + 10, centerY - 10);
			overlay.graphics.drawCircle(centerX, centerY, r1);
			overlay.graphics.drawCircle(centerX, centerY, r2);
		}
	}

private function convert(bmd:BitmapData, r1:Number, r2:Number, centerX:Number, centerY:Number):BitmapData {
        // get size information
        var w:Number = bmd.width;
        var h:Number = bmd.height;

// init convert target BitmapData
        var H:Number = r2 - r1;
        var W:Number = r2 * Math.PI;
        var bmd2:BitmapData = new BitmapData(W, H, false, 0xff808080);

// convert to polar coordinates
        for (var i:int = 0; i < W; i++){
            var rad:Number = 2 * Math.PI / W * -i;
            var cos:Number = Math.cos(rad);
            var sin:Number = Math.sin(rad);

for (var j:int = 0; j <= H; j++){
                var xx:int = centerX + (j + r1) * cos;
                var yy:int = centerY + (j + r1) * sin;
                bmd2.setPixel(i, j, bmd.getPixel(xx, yy));
            }
        }
		return bmd2;
    }
}
}

Donut shaped 360 degree photo (panorama photo) converter