Sort out leftovers from the old fx module

This commit is mostly to clean up the implementation of the initAnimation
method of the Fx Module (issue #547). It also fixes these issues: #552, #582
and #584.

Here is a list of the changes and fixes that are made:
* Add a plot and array method to SVG.TextPath (issue #582)

* Make the method plot a getter when no parameter is passed for SVG.Polyline,
SVG.Polygon, SVG.Line, SVG.Path (this idea come from issue #547)

* Allow SVG.PointArray to be passed flat array

* Change the regexp SVG.PointArray use to parse string to allow more
flexibility in the way spaces and commas can be used to separate points
(something like this is now accepted: '1, 2, 3, 4')

* Allow plot to be called with 4 parameters when animating an SVG.Line

* Fix a bug in the plain morphing part of SVG.MorphObj that is in the FX module

* Relative value for SVG.Number are now calculated in its morph method (idea
from issue #547)

* Clean up the implementation of the initAnimation method of the FX module
(issues #547, #552, #584)

1 files changed, 12 insertions, 4 deletions

diff --git a/src/textpath.js b/src/textpath.js
index f091de9..e0defc3 100644
--- a/src/textpath.js
+++ b/src/textpath.js
@@ -28,14 +28,22 @@ SVG.TextPath = SVG.invent({
 
       return this
     }
+    // return the array of the path track element
+  , array: function() {
+      var track = this.track()
+
+      return (track) ? track.array() : null
+    }
     // Plot path if any
   , plot: function(d) {
       var track = this.track()
+        , pathArray = null
 
-      if (track)
-        track.plot(d)
+      if (track) {
+        pathArray = track.plot(d)
+      }
 
-      return this
+      return (d == null) ? pathArray : this
     }
     // Get the path track element
   , track: function() {
@@ -50,4 +58,4 @@ SVG.TextPath = SVG.invent({
         return SVG.adopt(this.node.firstChild)
     }
   }
-})
\ No newline at end of file
+})