;---------------------------------------------------------------------------
; Document name: hsi_annsec_pattern_control__define.pro
; Created by:    Andre Csillaghy, May 1999
;
; Last Modified: Fri Mar 23 14:36:44 2001 (Administrator@TOURNESOL)
;---------------------------------------------------------------------------
;
;+
; PROJECT:
;       HESSI
;
; NAME:
;       ANNULAR SECTOR MODULATION PATTERN CONTROL STRUCTURE DEFINITION
;
; PURPOSE:
;       Defines the control parameters required by the annular sector
;       modulation pattern imaging strategy
;
; CATEGORY:
;       HESSI Utilities
;
; CALLING SEQUENCE:
;       var = {hsi_modul_patterm_control}
;
; TAG NAMES:
;
; SEE ALSO:
;
; HISTORY:
;       Release 6: split into hsi_annsec_pattern_control and
;                  hsi_modul_pattern_control
;                  March 2001, csillag@ssl.berkeley.edu
;	Release 5 development, June 2000, richard.schwartz@gsfc.nasa.gov.
;		Added two parameters, r0_offset and xaxis_fov.
;		R0_offset is the distance in arcseconds between
;               the annular sector axis (not nececessarily
;		the telescope axis or sun-center) and the map center.
;               r0_offset must be greater than
;		the half-length of the FOV along the radial
;		directions.
;               It's default is image_dim[0]*
;		pixel_size[0] * pixel_scale  * 10.
;		Xaxis_fov is a switch.  Default value is 1.
;               When set, the orientation of the annular sector
;		FOV is along the positive X axis, i.e.
;               the direction defined by the radial running through
;		the axis of symmetry is parallel to the X axis.
;       Release 3 development, August 1999
;       Release 2, June 1999,
;           A Csillaghy, csillag@ssl.berkeley.edu
;		11-dec-2001, ras,
;			moved pixel_scale to modul_pattern_control from annsec_pattern_control
;-

PRO hsi_annsec_pattern_control__define

dummy = {hsi_annsec_pattern_control, $
         factor_by: 0, $
	 modpat_skip: 0,$
	 r0_offset: 0.0,$
         ;xaxis_fov: 0, $ xaxis is always 1.
         INHERITS HSI_Modul_Pattern_Strategy_Control}

END


;---------------------------------------------------------------------------
; End of 'hsi_annsec_pattern_control__define.pro'.
;---------------------------------------------------------------------------