2 raphael arc objects

raphael.arcs.js

// http://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands
Raphael.fn.arc = function(startX, startY, endX, endY, radius1, radius2, angle) {
  var arcSVG = [radius1, radius2, angle, 0, 1, endX, endY].join(' ');
  return this.path('M'+startX+' '+startY + " a " + arcSVG);
};

Raphael.fn.circularArc = function(centerX, centerY, radius, startAngle, endAngle) {
  var startX = centerX+radius*Math.cos(startAngle*Math.PI/180); 
  var startY = centerY+radius*Math.sin(startAngle*Math.PI/180);
  var endX = centerX+radius*Math.cos(endAngle*Math.PI/180); 
  var endY = centerY+radius*Math.sin(endAngle*Math.PI/180);
  return this.arc(startX, startY, endX-startX, endY-startY, radius, radius, 0);
};