Mutually dependent line and gliders: Difference between revisions

@@ Line 14: / Line 14: @@
 var line = board.create('line', [0,0,1]);
-/*
 var offset = gl2.Y() - gl1.Y();
 gl1.on('drag', function() {
      gl2.moveTo([gl1.X(), gl1.Y() + offset]);
-                 });
+    });
 gl2.on('drag', function() {
      offset = gl2.Y() - gl1.Y();
-                 });
+    var v = JXG.Math.Geometry.crossProduct(gl1.coords.usrCoords,gl2.coords.usrCoords);
-*/
+    });
 </jsxgraph>

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