public SpringData(double c, double length, Vector3i a, Vector3i b, CubeArray <Vector3d> dataSource) : this(c, length, a, b, dataSource, dataSource)
 {
 }
 public SpringData(double c, double length, Vector3i a, Vector3i b, CubeArray <Vector3d> dataSourceA, CubeArray <Vector3d> dataSourceB)
 {
     this.c           = c;
     this.length      = length;
     this.a           = a;
     this.b           = b;
     this.dataSourceA = dataSourceA;
     this.dataSourceB = dataSourceB;
 }