RaphaelJS Helper

RaphaelJS Helper.coffee

class Path
  constructor: (@startX, @startY) ->
    @path = []
    @string = null
    @moveTo @startX, @startY

  pop: ->
    @path.pop()
    @string = null
    this

  moveTo: (x, y) ->
    @path.push ['M', x, y]
    this

  lineTo: (x, y) ->
    @path.push ['L', x, y]
    this

  close: ->
    @path.push ['Z']
    this

  #Alias
  closePath: ->
    @close()

  horizontal: (x) ->
    @path.push ['H', x]
    this

  vertical: (y) ->
    @path.push ['V', y]
    this

  curveTo: (x1, y1, x2, y2, x, y) ->
    @path.push ['C', x1, y1, x2, y2, x, y]
    this

  sCurveTo: (x2, y2, x, y) ->
    @path.push ['S', x2, y2, x, y]
    this

  qCurveTo: (x1, y1, x, y) ->
    @path.push ['Q', x1, y1, x, y]
    this

  sqCurveTo: (x, y) ->
    @path.push ['T', x, y]
    this

  arcTo: (rx, ry, xRot, lArcFlag, sweepFlag, x, y) ->
    @path.push ['A', rx, ry, xRot, lArcFlag, sweepFlag, x, y]
    this

  crCurveTo: (x1, y1, x, y) ->
    arr = [x1, y1]
    arr.push x if x?
    arr.push y if y?
    this

  compile: ->
    @string = ""
    for arg in @path
      arTmp = arg.slice()
      @string += arTmp[0]
      [].shift.apply arTmp, []
      @string += [].join.apply arTmp, [',']
    @string


  toString: ->
    string if string?
    @compile()

  get: ->
    @toString()

  draw: (paper) ->
    paper.path @get()