2.1 lines: invert distance function

inverting the distance check and indexing the stroke alpha on the distance between 2 points

forked:0
favorite:6
lines:46
license : MIT License
modified : 2010-12-27 21:29:05

Embed: Tweet

package 
{
	import com.bit101.components.HUISlider;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.Point;
	
	/**
	 * @author Nicolas Barradeau
	 * http://en.nicoptere.net
	 */
	public class ProximityDistribution extends Sprite 
	{
		
		private var points:Vector.<Point> = Vector.<Point>([ new Point(297.48,180.02),new Point(302.56,145.32),new Point(283.75,88.31),new Point(237.16,66.59),new Point(198.93,78.66),new Point(184.90,103.70),new Point(193.26,129.34),new Point(201.62,152.56),new Point(195.35,169.76),new Point(179.52,176.70),new Point(158.32,165.23),new Point(148.46,132.35),new Point(175.64,75.64),new Point(249.40,50.90),new Point(334.51,84.99),new Point(354.52,140.20),new Point(345.56,182.73),new Point(310.92,233.71),new Point(261.05,299.77),new Point(250.00,352.87),new Point(238.35,352.87),new Point(247.31,294.04),new Point(275.68,228.88),new Point(246.12,450.90),new Point(224.02,441.86),new Point(214.76,419.53),new Point(224.02,397.21),new Point(246.12,387.86),new Point(268.52,397.21),new Point(277.47,419.53),new Point(268.22,441.86)]);
		
		private var distanceSlider:HUISlider;
		private var minDist:Number;
		
		public function ProximityDistribution() 
		{
			distanceSlider = new HUISlider( this, 10, 10, 'distance', onDistanceChange );
			distanceSlider.maximum = 500;
			distanceSlider.value = 16;
			minDist = distanceSlider.value * distanceSlider.value;
			redraw();
		}
		
		private function onDistanceChange( e:Event ):void 
		{
			//square distance is cheaper in computation
			minDist = distanceSlider.value * distanceSlider.value;
			redraw();
		}
		
		private function redraw():void 
		{
			graphics.clear();
			
			var dist:Number;
			var p:Point, pp:Point;
			for each( p in points )
			{
				for each( pp in points )
				{
					//no use computing the distance to the same point
					if ( p === pp ) continue;
					
					// dist = ( inlined squared distance computation )
					dist = ( ( p.x - pp.x ) * ( p.x - pp.x ) + ( p.y - pp.y ) * ( p.y - pp.y ) );
					
					//if dist < ( minimum squared distance )
					if ( dist > minDist )
					{
						//we should join the dots
						graphics.lineStyle( 0, 0, minDist / dist );
						graphics.moveTo( p.x, p.y );
						graphics.lineTo( pp.x, pp.y );
					}
				}
			}
		}
	}
}

Code Fullscreen

Preview Fullscreen

bradsedito

omari

tkinjo

Murai

ibu4gin

hacker_rs10v.. :

points sketchgenerative from points