/// <summary>
/// Calculates the local axis of a 1D entity.
/// </summary>
/// <param name="coor">Entity coordinates</param>
/// <param name="zAxis">Z axis of the 1D entity</param>
/// <returns>Axis</returns>
public static StructuralAxis LocalAxisEntity1D(double[] coor, StructuralVectorThree zAxis)
{
var axisX = new Vector3D(coor[3] - coor[0], coor[4] - coor[1], coor[5] - coor[2]);
var axisZ = new Vector3D(zAxis.Value[0], zAxis.Value[1], zAxis.Value[2]);
var axisY = Vector3D.CrossProduct(axisZ, axisX);
var axis = new StructuralAxis(
new StructuralVectorThree(new double[] { axisX.X, axisX.Y, axisX.Z }),
new StructuralVectorThree(new double[] { axisY.X, axisY.Y, axisY.Z }),
new StructuralVectorThree(new double[] { axisZ.X, axisZ.Y, axisZ.Z })
);
axis.Normalize();
return(axis);
}
