Ejs Open Source Bar Magnetic Field Lines Model Java Applet

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/htdocs/ntnujava/ejsuser/14019/users/sgeducation/lookang/fieldlines3Dwee01_pkg/fieldlines3Dwee01.propertiesFull screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
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My own naive idea is to use analyticCurve3D but i haven't seen any example on a family of analyticCurve3D, so each is drawn as a single analyticCurve3D.

the match is close but not very accurate
http://en.wikipedia.org/wiki/Ellipse
An ellipse in general position can be expressed parametrically as the path of a point (X(t),Y(t)), where
Minimum = 0
Maximum = 2*Math.PI
Variable = "theta"
X() = "1.4+1.4*Math.cos(theta)*Math.cos(0)-1.4*Math.sin(theta)*Math.sin(0)"
z()= "0+0.5*Math.sin(theta)*Math.sin(0)-1*Math.sin(theta)*Math.cos(0)"