flash on 2016-1-11

by mutantleg 11 Jan 2016

Embed

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/oL0g
 */

package {
    import flash.geom.Rectangle;
    import flash.geom.Matrix;
    import flash.display.BitmapData;
    import flash.events.Event;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        public function FlashTest() {
            
            vecDrop = new Vector.<xDrop>(0, false);
            
            var i:int; var a:xDrop;
            
            for (i=0;i<32;i+=1)
            {
               a = new xDrop();
               a.cx = Math.random()*430+30;
               a.cy = Math.random()*430+30;
               a.rad = 8+Math.random()*32; 
                vecDrop.push(a);
             }//nexti
             
             canvas = new BitmapData(128, 128, false, 0);
            
            stage.addEventListener(Event.ENTER_FRAME, onEnter);
        }//ctor
     
       public var vecDrop:Vector.<xDrop>;
     
     public var ix:Number = 1/4;
     public var iy:Number = 1/4;
     
        public var canvas:BitmapData;
        public var canMat:Matrix = new Matrix(4,0,0,4);
        
          public var tempRect:Rectangle = new Rectangle(0,0,0,0);  
            public function fillRect(to:BitmapData, ax:Number, ay:Number, aw:Number, ah:Number, c:uint):void
            {   tempRect.x = ax|0; tempRect.y = ay|0;        tempRect.width = aw; tempRect.height = ah;
                to.fillRect(tempRect, c);
            }//fillrect
     
       public function onEnter(e:Event):void
       {
           graphics.clear();
           graphics.lineStyle(2, 0);
           
           canvas.fillRect(canvas.rect, 0xFFffFFff);
           
           var i:int; var num:int; var a:xDrop;
           num = vecDrop.length;
           for(i=0;i<num;i+=1)
           {
             a = vecDrop[i];
             fillRect(canvas, a.cx*ix-a.rad*ix, a.cy*iy-a.rad*iy, a.rad*2*ix, a.rad*2*iy, 0x808080); 
             
           }//nexti
           
           fillRect(canvas, 0,0, 512, 4, 0xffFFffFF);
           fillRect(canvas, 0,0, 4, 512, 0xffFFffFF);
    
           for(i=0;i<num;i+=1)
           { a = vecDrop[i];     outLine(a.cx*ix, a.cy*iy);   }          
             
           graphics.beginBitmapFill(canvas, canMat, false, false);
            graphics.drawRect(0,0, 465,465);
           graphics.endFill();
           
           num = vecDrop.length;
           for(i=0;i<num;i+=1)
           {
             a = vecDrop[i];
           //  graphics.drawCircle(a.cx,a.cy, 4);
            //graphics.drawRect(a.cx-a.rad, a.cy-a.rad, a.rad*2, a.rad*2);
           }//nexti
           
       }//onenter   
     
         public function isWall(ax:int, ay:int):Boolean
         { 
          if (ay < 0) { return true;}
          if (canvas.getPixel(ax,ay)==0xFF) {return false; }
          return canvas.getPixel(ax,ay) < 0xF8f8F8;
         }//iswall
        
       
        public var cx:int = 0;
        public var cy:int = 0;
        public var wx:int = 1;
        public var wy:int = 0; 
        
        public var dir:int = 0;

       public function outLine(ax:int, ay:int):void
       {
          var i:int;        
          cx = ax; cy = ay;   for (i=0;i<1024;i+=1)
          {  if (isWall(cx,cy))  { canvas.setPixel(cx,cy,0x404040);  cy+=1;  } else { break;} }
          wx=-1; wy=0; drawWall();
          cx = ax; cy = ay;   for (i=0;i<1024;i+=1)
          {  if (isWall(cx,cy))  { canvas.setPixel(cx,cy,0x404040);  cy-=1;  } else { break;} }
          wx=1; wy=0; drawWall();
          cx = ax; cy = ay;   for (i=0;i<1024;i+=1)
          {  if (isWall(cx,cy))  { canvas.setPixel(cx,cy,0x404040);  cx+=1;  } else { break;} }
          wx=0; wy=1; drawWall();
          cx = ax; cy = ay;   for (i=0;i<1024;i+=1)
          {  if (isWall(cx,cy))  { canvas.setPixel(cx,cy,0x404040);  cx-=1;  } else { break;} }
          wx=0; wy=-1; drawWall();

       }//outline          
                  
        public function drawWall():void
        {
          var i:int; var t:int;          
          var k:int; k = 0;
          for (i=0;i<4096;i+=1)
          {
              //if (dir != 0)    { dir = 0; wx *= -1; wy *= -1;  }
              if (isWall(cx+wx,cy+wy)) { t = wx; wx = wy; wy = -t;  }      
              
              if (isWall(cx-wy-wx,cy+wx-wy) )
              if (isWall(cx-wy,cy+wx) ==false)  { t = wx; wx = -wy; wy = t;  } 
              if (canvas.getPixel(cx,cy) == 0xFF) { k+=1; if (k>=4) {break;}}    
              canvas.setPixel(cx,cy, 0xFF);  
              cx += wx;   cy += wy;
          }//nexti         
       // canvas.setPixel(cx,cy, 0xFFff);  
     
       }//outline 
        
        
        
        
    }//classend
}

internal class xDrop
{
     public var cx:Number = 0;
     public var cy:Number = 0;
     public var rad:Number = 0;   
    
}//xdrop