Divertitevi un po con questo esempio :P
Se volete smanettarci un po potete, ovviamente resta mio...
codice:
<?php

	function drawForm($plane)
	{
		swf_pushmatrix();
			swf_placeobject(1, $plane);
			swf_placeobject(2, $plane+1);

			swf_pushmatrix();
				swf_addcolor(0, 102/255, 204/255, 0);
				swf_placeobject(3, $plane+2);
				swf_translate(30, 30, 0);
				swf_addcolor(1, 1, 1, 0);
				swf_placeobject(2, $plane+3);
			swf_popmatrix();

			swf_showframe();
		swf_popmatrix();
		return 4;
	}

	function removeForm($plane)
	{
		swf_removeobject($plane);
		swf_removeobject($plane+1);
		swf_removeobject($plane+2);
		swf_removeobject($plane+3);
	}

	$fileName = "swf_symbol.swf";

	$shape = 100;
	$symbol = 200;
	$line = 10;
	$rect1 = 20;
	$rect2 = 30;

	swf_openfile($fileName, 400, 400, 30, 0, 0, 0);
	swf_ortho2(-200, 200, -200, 200);


	swf_defineline($line, -10, -10, 10, 10, 3);
	swf_definerect($rect1, -20, -20, -10, -10, 3); // larghezza 3
	swf_definerect($rect2, 20, 20, 10, 10, 0); // pieno

	swf_startsymbol($shape);
		swf_pushmatrix();
			swf_addcolor(1, 1, 1, 0);
			swf_placeobject($line, $symbol);
			swf_placeobject($rect1, $symbol);
			swf_pushmatrix();
				swf_addcolor(0, 102/255, 204/255, 0);
				swf_placeobject($rect2, $symbol+1);
				swf_translate(30, 30, 0);
				swf_addcolor(1, 1, 1, 0);
				swf_placeobject($rect1, $symbol+2);
			swf_popmatrix();
		swf_popmatrix();
		swf_showframe();
	swf_endsymbol();

	swf_startsymbol($symbol);
		for ($i = 0; $i < 360; $i+=360/36)
		{
			swf_pushmatrix();
				swf_mulcolor(1.0, 1.0, 1.0, 0.0);
				swf_addcolor(0.0, 0.0, 0.0, 1.0);
				swf_rotate($i, 'z');
				swf_scale($i/90, $i/90, 1);
				swf_placeobject($shape, $i+1000);
				swf_showframe();
				swf_removeobject($i+1000);
			swf_popmatrix();
		}
	swf_endsymbol();

	$n = 36;
	for ($i = 1; $i <= $n; $i++)
	{
		swf_pushmatrix();
			swf_translate(cos((2*pi()/$n)*$i)*100, sin((2*pi()/$n)*$i)*100, 0);
			swf_placeobject($symbol, 1000);
			swf_showframe();
		swf_popmatrix();
	}

	swf_startdoaction();
	swf_actionstop();
	swf_enddoaction();
	swf_showframe();

	swf_closefile();
	echo "<EMBED src='$fileName' quality=high
pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash' 
type='application/x-shockwave-flash' 
width='800' height='600'></EMBED>";
?>
vedete di capire come funge.
La prossima volta cerchero' di combinare questo esempio con gli alpha, per fare che i vari disegni siano sfumati... o qualcosa del genere, ma che comunque impieghi l'alpha.