cardiogram.as

我的毕业设计其中的一部分

class cardiogram extends MovieClip
{
	private var total_heigth:Number //总高
	private var total_width:Number //总宽
	private var base_height:Number;//起始高度
	private var pervoltage_heigth:Number //多高代表一单位电压值
	private var max_voltage:Number //最大电压值
	private var pp_width:Number //点和点之间间隔多宽
	private var base_width:Number //起始宽度
	private var points_perscreen:Number //一屏共显示多少个点
	private var refurbish_speed:Number //刷新速率
	private var aspect:Number //方向(左或者右)
	private var line_color:Number //线的颜色
	private var line_thickness:Number //线的粗细

	private var allDate:Array

	private var pID:Number
	private var p_head:Number ;
	private var p_end:Number ;
	private var pointer_start:Number;
	private var pointer_end:Number;
	private var runFlag:Boolean;
	private var splitStr:String;

	private var theBg:MovieClip;


	public function cardiogram()
	{
		total_heigth = 295
		total_width = 500
		base_height = 20 ;
		pervoltage_heigth = 1 ;
		max_voltage = 255
		pp_width = 20 ;
		base_width = 0
		points_perscreen = 45 ;
		refurbish_speed = 3000 ;
		aspect = 1 ;
		line_color = 0x99FF00 
		line_thickness = 1 ;

		pID = 0;
		p_head = 0;
		p_end = 0 ;
		pointer_start = 0 ;
		pointer_end = 0;
		runFlag = true;
		splitStr = " "

		this.clear();
		theBg._visible=false;
	}
	public function setTheDate( d:String )
	{
		this.cardiogram();
		allDate = d.split( splitStr )
	}
	public function gotoStart()
	{
		pID = setInterval( this , "drawIt" , 1000 );	
	}
	public function gotoStop()
	{
		clearInterval( pID )
	}
	private function drawIt()
	{
		var temp_pointer_start:Number;

		if( !runFlag )
		{
			return ;
		}
		if( pointer_end >= ( points_perscreen - 1 ) )
		{
			gotoStop();
		}
		
		drawIt_b();
		
		temp_pointer_start = pointer_start ;
		if( pointer_start < ( points_perscreen - 1 ) )
		{
			pointer_start++ ;
		}
		if( p_end == ( allDate.length - 1 ) )
		{
			pointer_end++ ;
		}
		if( p_end < ( allDate.length - 1 ) )
		{
			p_end++ ;
		}
		if( temp_pointer_start == ( points_perscreen - 1 ) &&  p_head < ( allDate.length - 1 ) )
		{
			p_head++
		}

	}
	private function drawIt_b()
	{
		this.clear();
		var i:Number;
		var s:String;
		this.lineStyle( line_thickness ,  line_color , 100 );
		var firstFlag:Boolean;
		firstFlag = true;
		s = "" ;

		for( i = p_end ; i >= p_head ; i-- )
		{
			s += allDate[ i ] + ","
		}
		s += "----" + pointer_end + "||||" + pointer_start ;
//		trace( s )

		for( i = pointer_end ; i <= pointer_start ; i++ )
		{
			var n:Number;
			n = Number( allDate[ p_end - i ] );
			var theX = base_width + ( i * pp_width )
			var theY = total_heigth - ( base_height + ( n * pervoltage_heigth ) )
		//	trace( theX + "  " + theY )
			if( firstFlag )
			{
				this.moveTo( theX , theY )
			}
			else
			{
				this.lineTo( theX , theY );
			}
			firstFlag = false ;
		}
		//trace("-------------------------------")
	}

}