flash on 2014-10-12

by mutantleg 12 Oct 2014

Embed

/**
 * Copyright mutantleg ( http://wonderfl.net/user/mutantleg )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/6tcb
 */

package {
    import flash.events.MouseEvent;
    import flash.events.Event;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        public function FlashTest() {
       
         
            tempRect.cx = 64; tempRect.cy = 64;
            tempRect.cw = 128; tempRect.ch = 128;
         
            tempRect2.cw = 48; tempRect2.ch = 48;        
            
            
            stage.addEventListener(MouseEvent.CLICK, onClick);
            stage.addEventListener(Event.ENTER_FRAME, onEnter);
        }//ctor

        public function onClick(e:MouseEvent):void
        {
            
            tempRect.cx = 32+Math.random()*200;
             tempRect.cy = 32+Math.random()*200;
            
            tempRect.cw = 16 + Math.random()*160;
            tempRect.ch = 16 + Math.random()*160;        


            tempRect2.cw = 8 + Math.random()*160;
            tempRect2.ch = 8 + Math.random()*160;        
            
            
        }//onclick


        public var tempRect:xRect = new xRect();
        public var tempRect2:xRect = new xRect();        
        
        public function onEnter(e:Event):void
        {
            
            var mx:Number; var my:Number;
            mx = stage.mouseX;
            my = stage.mouseY;
   
            var a:xRect;            var b:xRect;
            a = tempRect;
            b = tempRect2;
            
            //a.cx = 64; a.cy = 64;
            //a.cw = 128; a.ch = 128;
            
            b.cx = mx; b.cy = my;
            //b.cw = 48; b.ch = 48;        
            //b.cw = 160;
            //b.ch = 160;
      
            graphics.clear();
            graphics.lineStyle(2, 0);
            
            graphics.drawRect(a.cx,a.cy,a.cw,a.ch);
            
            graphics.beginFill(0,0.5);
            graphics.drawRect(b.cx,b.cy,b.cw,b.ch);
            graphics.endFill();
            
            cutRect(a, b);
  
   
        }//onenter
        
        //actually just draw the results for now
        //a rect to cut from
        //b rect used to cut
        public function cutRect(a:xRect, b:xRect):void
        {
            var ax:Number; var ay:Number;
            var aw:Number; var ah:Number;
  
           
          //check overlap
              if (a.cx + a.cw < b.cx ) { return; }
              if (a.cy + a.ch < b.cy ) { return; }
              if (b.cx + b.cw < a.cx ) { return; }
              if (b.cy + b.ch < a.cy ) { return; }
              
          //check if a inside b
             if (a.cx > b.cx)
             if (a.cx +a.cw < b.cx+b.cw)
             if (a.cy > b.cy)
             if (a.cy +a.ch < b.cy+b.ch)
             {
               graphics.lineStyle(4, 0xFF0000);
               graphics.drawRect(a.cx,a.cy,a.cw,a.ch);
               return;
             }//endif
             
              
   
          //top
          if (b.cy > a.cy)
          {
            ax = a.cx;            ay = a.cy;
            aw = a.cw;            ah = b.cy - ay;
            graphics.lineStyle(2, 0xFF0000);
            graphics.beginFill(0xFF0000,0.5); graphics.drawRect(ax, ay, aw, ah); graphics.endFill();
          }//endif
  
          //bottom
          if ((b.cy+b.ch) < (a.cy + a.ch))
          {
            ax = a.cx;            ay = b.cy+b.ch;
            aw = a.cw;            ah = ((a.cy+a.ch) - ay);
            graphics.lineStyle(2, 0xFF);
            graphics.beginFill(0xFF,0.5); graphics.drawRect(ax, ay, aw, ah); graphics.endFill();
          }//endif

           //left
          if (b.cx > a.cx)
          {
            ax = a.cx;            ay = b.cy;
            aw = b.cx - a.cx;     ah = b.ch;
            if (ay < a.cy) { ah = b.ch - (a.cy - ay); ay = a.cy; }
            if ((ay + ah) > (a.cy + a.ch)) { ah = (a.cy + a.ch)-ay; }
            graphics.lineStyle(2, 0x0FFF0F);
            graphics.beginFill(0x0FFF0F,0.5); graphics.drawRect(ax, ay, aw, ah); graphics.endFill();
           }//endif
          
          //right
          if (b.cx+b.cw < (a.cx + a.cw) )
          {
            ax = b.cx+b.cw;                    ay = b.cy;
            aw = (a.cx+a.cw) -  (b.cx+b.cw);   ah = b.ch;
            if (ay < a.cy) { ah = b.ch - (a.cy - ay); ay = a.cy; }
            if ((ay + ah) > (a.cy + a.ch)) { ah = (a.cy + a.ch)-ay; }
            graphics.lineStyle(2, 0xFF00FF);
            graphics.beginFill(0xFF00FF,0.5); graphics.drawRect(ax, ay, aw, ah); graphics.endFill();
           }//endif


          //intersection
           ax = Math.max(a.cx,b.cx);
           ay = Math.max(a.cy,b.cy);
           aw = Math.min(a.cx+a.cw,b.cx+b.cw) - ax;
           ah = Math.min(a.cy+a.ch, b.cy+b.ch) - ay;
          
          graphics.lineStyle(2, 0x0);
            graphics.beginFill(0xFFFaaF,0.5); graphics.drawRect(ax, ay, aw, ah); graphics.endFill();
          

         
            
            
        }//cutrect
        
        
        
        
        
    }//classend
}

internal class xRect
{
  public var cx:Number = 0;
  public var cy:Number = 0;
  public var cw:Number = 0;
  public var ch:Number = 0;
  
}//xrect