diff -r efd9c589177a -r c0b4a8b5a012 toolkit/exemples/couple/javascript/d3/src/svg/area.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/exemples/couple/javascript/d3/src/svg/area.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,89 @@
+function d3_svg_area(projection) {
+  var x0 = d3_svg_lineX,
+      x1 = d3_svg_lineX,
+      y0 = 0,
+      y1 = d3_svg_lineY,
+      interpolate,
+      i0,
+      i1,
+      tension = .7;
+
+  function area(d) {
+    if (d.length < 1) return null;
+    var points0 = d3_svg_linePoints(this, d, x0, y0),
+        points1 = d3_svg_linePoints(this, d, x0 === x1 ? d3_svg_areaX(points0) : x1, y0 === y1 ? d3_svg_areaY(points0) : y1);
+    return "M" + i0(projection(points1), tension)
+         + "L" + i1(projection(points0.reverse()), tension)
+         + "Z";
+  }
+
+  area.x = function(x) {
+    if (!arguments.length) return x1;
+    x0 = x1 = x;
+    return area;
+  };
+
+  area.x0 = function(x) {
+    if (!arguments.length) return x0;
+    x0 = x;
+    return area;
+  };
+
+  area.x1 = function(x) {
+    if (!arguments.length) return x1;
+    x1 = x;
+    return area;
+  };
+
+  area.y = function(y) {
+    if (!arguments.length) return y1;
+    y0 = y1 = y;
+    return area;
+  };
+
+  area.y0 = function(y) {
+    if (!arguments.length) return y0;
+    y0 = y;
+    return area;
+  };
+
+  area.y1 = function(y) {
+    if (!arguments.length) return y1;
+    y1 = y;
+    return area;
+  };
+
+  area.interpolate = function(x) {
+    if (!arguments.length) return interpolate;
+    i0 = d3_svg_lineInterpolators[interpolate = x];
+    i1 = i0.reverse || i0;
+    return area;
+  };
+
+  area.tension = function(x) {
+    if (!arguments.length) return tension;
+    tension = x;
+    return area;
+  };
+
+  return area.interpolate("linear");
+}
+
+d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
+d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
+
+d3.svg.area = function() {
+  return d3_svg_area(Object);
+};
+
+function d3_svg_areaX(points) {
+  return function(d, i) {
+    return points[i][0];
+  };
+}
+
+function d3_svg_areaY(points) {
+  return function(d, i) {
+    return points[i][1];
+  };
+}