The object wrapped by this element is of the class org.opensourcephysics.displayejs.InteractivePoligon (yes, misspelled!), but is used in a special way, so it is preferable not to invoke its methods directly.

Useful Methods
void setData (double[][] _data)
Sets the coordinates of the complete polygon at once. data is an array on [nPoints][2] with the (x,y) coordinates of each points..
public double[][] getData ()
Return the actual array of internal data. You should not modify this array directly, but through setData above. Strangely enough, the array returned is an array of [3][nPoints] doubles, because each point has a deprecated z coordinate and the data is organized by columns.
void setConnected (int _index, boolean _c)
Whether the point with given index is connected to the next point.
void setConnections (boolean[] _c)
Sets the coonnection feature of all points at once. The i-th element in the array indicates whether the i-th point is connected to the next point.