!
! This file is part of SACAMOS, State of the Art CAble MOdels in Spice. 
! It was developed by the University of Nottingham and the Netherlands Aerospace 
! Centre (NLR) for ESA under contract number 4000112765/14/NL/HK.
! 
! Copyright (C) 2016-2017 University of Nottingham
! 
! SACAMOS is free software: you can redistribute it and/or modify it under the 
! terms of the GNU General Public License as published by the Free Software 
! Foundation, either version 3 of the License, or (at your option) any later 
! version.
! 
! SACAMOS is distributed in the hope that it will be useful, but 
! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
! or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
! for more details.
! 
! A copy of the GNU General Public License version 3 can be found in the 
! file GNU_GPL_v3 in the root or at <http://www.gnu.org/licenses/>.
! 
! SACAMOS uses the EISPACK library (in /SRC/EISPACK). EISPACK is subject to 
! the GNU Lesser General Public License. A copy of the GNU Lesser General Public 
! License version can be found in the file GNU_LGPL in the root of EISPACK 
! (/SRC/EISPACK ) or at <http://www.gnu.org/licenses/>.
! 
! The University of Nottingham can be contacted at: ggiemr@nottingham.ac.uk
!
! File Contents:
! SUBROUTINE overshield_set_parameters
!
! NAME
!     overshield_set_parameters
!
! AUTHORS
!     Chris Smartt
!
! DESCRIPTION
!     Set the overall parameters for a overshield cable
!
! COMMENTS
!     No transfer impedance as yet...      
!
! HISTORY
!
!     started 12/4/2016 CJS 
!     revised 5/9/2016 CJS to include the shield conductor loss model

!     16/11/2017 CJS Include network synthesis process to replace s-domain transfer functions

!
!
SUBROUTINE overshield_set_parameters(cable)

USE type_specifications

IMPLICIT NONE

! variables passed to subroutine

  type(cable_specification_type),intent(INOUT)    :: cable

! local variables

! START

  cable%cable_type=cable_geometry_type_overshield
  cable%tot_n_conductors=1
  cable%tot_n_domains=1
  cable%n_external_conductors=1
  cable%n_internal_conductors=0      ! not known at this stage so set to zero
  cable%n_internal_domains=0         ! not known at this stage so set to zero
  cable%n_parameters=3
  cable%n_dielectric_filters=0
  cable%n_transfer_impedance_models=1

END SUBROUTINE overshield_set_parameters
!
! NAME
!     overshield_set_internal_domain_information
!
! AUTHORS
!     Chris Smartt
!
! DESCRIPTION
!     Set the overall parameters for a overshield cable
!
! COMMENTS
!     Set the dimension of the domain transformation matrices to include an external reference conductor for the cable 
!      
!
! HISTORY
!
!     started 13/4/201 CJS 
!     8/5/2017         CJS: Include references to Theory_Manual
!
!
SUBROUTINE overshield_set_internal_domain_information(cable)

USE type_specifications
USE general_module
USE constants

IMPLICIT NONE

! variables passed to subroutine

  type(cable_specification_type),intent(INOUT)    :: cable

! local variables

  integer :: dim
  
! variables for cable parameter checks 
  logical  :: cable_spec_error
  real(dp) :: rs
  real(dp) :: t
  real(dp) :: sigma
  
  type(Sfilter) :: ZT
  
  character(LEN=error_message_length) :: message 

! START

  rs=cable%parameters(1)
  t=cable%parameters(2)
  sigma=cable%parameters(3)
  
  ZT=cable%transfer_impedance(1)
 
  cable_spec_error=.FALSE.    ! assume no errors initially
  message=''
  CALL cylindrical_check(rs,cable_spec_error,cable%cable_name,message)
  CALL transfer_impedance_check(ZT,cable_spec_error,cable%cable_name,message)
  CALL surface_impedance_check(ZT,sigma,rs,t,cable_spec_error,cable%cable_name,message)
    
  if (cable_spec_error) then       
    run_status='ERROR in cable_model_builder, error on parameters for cable:'//trim(cable%cable_name)//'. '//trim(message)
   CALL write_program_status()
    STOP 1
  end if
     
! Set the domain decomposition matrices ! Theory_Manual_Eqn 6.15, 6.16

! The dimension of the domain transformation matrices is 2

  dim=2
  cable%MI%dim=dim
  ALLOCATE(cable%MI%mat(dim,dim))
  cable%MV%dim=dim
  ALLOCATE(cable%MV%mat(dim,dim))

  cable%MI%mat(1,1)=1d0
  cable%MI%mat(1,2)=0d0
  cable%MI%mat(2,1)=1d0
  cable%MI%mat(2,2)=1d0

  cable%MV%mat(1,1)=1d0
  cable%MV%mat(1,2)=-1d0
  cable%MV%mat(2,1)=0d0
  cable%MV%mat(2,2)=1d0
  
! Set the local reference conductor numbering  
  ALLOCATE( cable%local_reference_conductor(1) )
  cable%local_reference_conductor(1)=0              ! external domain conductor, reference not known

! Set the local domain information: include a reference conductor in the count
  ALLOCATE( cable%local_domain_n_conductors(1:cable%tot_n_domains) )
  cable%local_domain_n_conductors(1)=2              ! external domain 
  
! Set the external domain conductor and dielectric information
   
  ALLOCATE( cable%external_model(cable%n_external_conductors) )
  CALL reset_external_conductor_model(cable%external_model(1))
  cable%external_model(1)%conductor_type=circle
  cable%external_model(1)%conductor_radius=rs
  cable%external_model(1)%dielectric_radius=rs
          
! set the impedance model for the overshield
      
  cable%conductor_impedance(1)%impedance_model_type=impedance_model_type_cylindrical_shield
  cable%conductor_impedance(1)%radius=rs
  cable%conductor_impedance(1)%thickness=t
  cable%conductor_impedance(1)%conductivity=sigma
  cable%conductor_impedance(1)%ZT_filter=ZT
  
  CALL deallocate_Sfilter(ZT) 

  
  ALLOCATE( cable%conductor_label(1:cable%tot_n_conductors) )
  cable%conductor_label(1)='Cable name: '//trim(cable%cable_name)//   &
                           '. type: '//trim(cable%cable_type_string)//'. conductor 1 : Shield'

END SUBROUTINE overshield_set_internal_domain_information
!
! NAME
!     overshield_plot
!
! AUTHORS
!     Chris Smartt
!
! DESCRIPTION
!     plot overshield
!
! COMMENTS
!      
!
! HISTORY
!
!     started 14/4/2016 CJS 
!
!
SUBROUTINE overshield_plot(cable,x_offset,y_offset,theta,xmin,xmax,ymin,ymax)

USE type_specifications
USE general_module

IMPLICIT NONE

! variables passed to subroutine

  type(cable_specification_type),intent(IN)    :: cable
  
  real(dp),intent(IN) :: x_offset,y_offset,theta
  real(dp),intent(INOUT) ::  xmin,xmax,ymin,ymax

! local variables

  real(dp) :: x,y,r

! START

! plot overshield conductor
  r=cable%parameters(1)   ! overshield radius
  x=x_offset
  y=y_offset

  CALL write_circle(x,y,r,conductor_geometry_file_unit,xmin,xmax,ymin,ymax)
  
  RETURN
  
END SUBROUTINE overshield_plot