title: Is there a SVG API allowing to get Bezier and Spline point coordinates once generated?
body: <p>Is there a SVG API in JS allowing to get Bezier and Spline point coordinates once they are generated? </p>
  
  <p>I want to control a production machine that will follow the curve path. I need to know: 
  1) length along the path, or along each portion of the path.
  2) at every specified distance along the path, know the radius of curvature. One way I can imagine I can compute radius of curvature is to compare tengent (or path direction) from an adjacent point to another.</p>
  
  <p>But do I really need to generate my own JS for drawing thes curves if I want to be able to "read" path curve specifications?</p>
  
  <p>At worst, I would need to collect coordinates of all pixels generated.
  Thanks</p>