Question

Having a for loop say like

for (i=0;i<10;i++) { 
   // need to generate color value for each i. 
    //need to set the color value for drawing rectangle dynamically
}

Answer 1

Following on Pranav Hosangadi’s answer:

private function createColors(n:int):Array
{ 
  var colors:Array = [];

  for( var i= 0; i < n ; i++ )
  {   
    // for instance, but you could come up with
    // a variety of formulas , depending on what kind of spectrum 
    // you're looking for!
    var color:uint = 0xffffff * Math.random(); 

    // add your newly created color to the Array
    // you could also do : colors[i] = 0xffffff * Math.random();
    colors[i] = color;
  }

   return colors;
}


//after this you can generate your rectangles

private function createRectangles():void
{
    var colors:Array = createColors( 10 );

    for( var i= 0; i < colors.length ; i++ )
    { 
      var rect:Sprite = new Sprite();

      var g:Graphics=rect.graphics;
      g.beginFill(colors[i]);
      g.drawRect(10 * i , 10 * i, 100, 150); 
      g.endFill();

      this.addChild( rect );
    }
}