This had me scratching my head for ages

I found this code somewhere in my travels but can’t remember where so sorry for not crediting the creator of it, but here it is for anyone wanting a nice slice of vector!

package com.kafkaris.utils { import flash.display.Shape; import flash.events.Event; /** * Draw a segment of a circle * @param target <Sprite> The object we want to draw into * @param x <Number> The x-coordinate of the origin of the segment * @param y <Number> The y-coordinate of the origin of the segment * @param r <Number> The radius of the segment * @param aStart <Number> The starting angle (degrees) of the segment (0 = East) * @param aEnd <Number> The ending angle (degrees) of the segment (0 = East) * @param step <Number=1> The number of degrees between each point on the segment's circumference */ public dynamic class Wedge extends Shape { private var _colour:Number; private var _x:Number; private var _y:Number; private var _radius:Number; private var _aStart:Number; private var _aEnd:Number; private var _step:Number; public function Wedge(colour:Number, x:Number, y:Number, radius:Number, aStart:Number, aEnd:Number, step:Number = 1) { _colour = colour; _x = x; _y = y; _radius = radius; _aStart = aStart; _aEnd = aEnd; _step = step; init(); } private function init(e:Event = null):void { this.graphics.beginFill(_colour); this.drawSegment(this, _x, _y, _radius, _aStart, _aEnd, _step); this.graphics.endFill(); } private function drawSegment(target:Sprite, x:Number, y:Number, r:Number, aStart:Number, aEnd:Number, step:Number = 1):void { // More efficient to work in radians var degreesPerRadian:Number = Math.PI / 180; aStart *= degreesPerRadian; aEnd *= degreesPerRadian; step *= degreesPerRadian; // Draw the segment target.graphics.moveTo(x, y); for (var theta:Number = aStart; theta < aEnd; theta += Math.min(step, aEnd - theta)) { target.graphics.lineTo(x + r * Math.cos(theta), y + r * Math.sin(theta)); } target.graphics.lineTo(x + r * Math.cos(aEnd), y + r * Math.sin(aEnd)); target.graphics.lineTo(x, y); } } }

JK