private void drawMolecule(SolidBrush solidBrush, Molecule molecule)
{
canvas.FillEllipse(solidBrush,
(int)(molecule.X - molecule.Radius), (int)(molecule.Y - molecule.Radius),
(int)(molecule.Radius * 2), (int)(molecule.Radius * 2));
}
public static double Distance(Molecule molecule1, Molecule molecule2)
{
return(Math.Sqrt((molecule2.x - molecule1.x) * (molecule2.x - molecule1.x) +
(molecule2.y - molecule1.y) * (molecule2.y - molecule1.y)));
}