C (C) Copyright 1996-2016 ECMWF.
C 
C This software is licensed under the terms of the Apache Licence Version 2.0
C which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
C In applying this licence, ECMWF does not waive the privileges and immunities 
C granted to it by virtue of its status as an intergovernmental organisation nor
C does it submit to any jurisdiction.
C

      PROGRAM CONTSOLIDSHADE

C     This program demonstrates magics contouring facilities with solid shading. 
C     The meteorological data field is a standard global 500 hpa
C     model output field on a regular 1.5 degree grid. 
C     Contours and coastlines are projected onto a 
C     polar stereographic map.


      PARAMETER (NLEV=11)
      DIMENSION  RLEV (NLEV)
      DATA       RLEV /480, 490., 500., 510., 520., 530.,
     +                 540., 550., 560., 570., 580./

      CHARACTER*20 CTAB
      DIMENSION  CTAB  (NLEV)
      DATA       CTAB  /'RGB(1,0,0)',       'RGB(0,0,1)',
     +                  'RGB(0.1,0.1,1),',
     +                  'RGB(0.3,0.3,1),',
     +                  'RGB(0.4,0.4,1)',   'RGB(0.5,0.5,1),',
     +                  'RGB(0.6,0.6,1)',   'RGB(0.7,0.7,1),',
     +                  'RGB(0.8,0.8,1)',   'RGB(0.9,0.9,1),',
     +                  'RGB(0,1,0)'/




C     Open MAGICS and set the output device

      CALL POPEN
      CALL PARSE_COMMAND_LINE ('cont_solidshade_ex')
c      CALL PSETC ('PS_SPLIT', 'ON')


C     Set up the coastline attributes

      CALL PSETC ('MAP_COASTLINE_COLOUR', 'GREY')
      CALL PSETC ('MAP_GRID_COLOUR',      'GREY')     


C     Pass the data to MAGICS

      CALL PSETC ('GRIB_INPUT_TYPE',      'FILE')
      CALL PSETC ('GRIB_INPUT_FILE_NAME', 'z500.grb')
      CALL PGRIB
      

C     Define the contour     

      CALL PSETC  ('LEGEND',                       'ON')
      CALL PSETC  ('CONTOUR_LEVEL_SELECTION_TYPE', 'LEVEL_LIST')
      CALL PSET1R ('CONTOUR_LEVEL_LIST',            RLEV, NLEV)      
      CALL PSETC  ('CONTOUR_SHADE_COLOUR_METHOD',  'LIST')
      CALL PSET1C ('CONTOUR_SHADE_COLOUR_LIST',     CTAB, NLEV)
      CALL PSETC  ('CONTOUR_LINE_COLOUR',          'BLUE')
      CALL PSETC  ('CONTOUR_HIGHLIGHT_COLOUR',     'BLUE')
      CALL PSETC  ('CONTOUR_SHADE',                'ON')      
      call PSETC  ('CONTOUR_SHADE_TECHNIQUE',      'POLYGON_SHADING')
      call PSETC  ('CONTOUR_SHADE_METHOD',         'AREA_FILL')
      CALL PCONT
      

C     Set up and plot the title text

      CALL PSETC ('TEXT_LINE_1', 'Contours with solid shading')
      CALL PSETI ('TEXT_LINE_COUNT',1)
      CALL PSETC ('TEXT_JUSTIFICATION','CENTRE')
      CALL PTEXT


C     Plot the coastlines

      CALL PCOAST





C     ------------------------------------------------------------
C     New page - this time with a smaller area
C     ------------------------------------------------------------

      CALL PNEW ('SUPER_PAGE')


C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',    10.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',    0.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',   40.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',  60.0)


C     Plot everything

      CALL PTEXT
      CALL PCONT
      CALL PCOAST





C     ------------------------------------------------------------
C     New page - this time with a smaller area
C     ------------------------------------------------------------

      CALL PNEW ('SUPER_PAGE')


C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',    30.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',  -30.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',   65.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',  70.0)


C     Plot everything

      CALL PTEXT
      CALL PCONT
      CALL PCOAST



C     ------------------------------------------------------------
C     New page - this time with a new area
C     ------------------------------------------------------------

      CALL PNEW ('SUPER_PAGE')


C     Area specification (SOUTH, WEST, NORTH, EAST )

      CALL PSETR ('SUBPAGE_LOWER_LEFT_LATITUDE',    30.0)
      CALL PSETR ('SUBPAGE_LOWER_LEFT_LONGITUDE',  -30.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LATITUDE',   50.0)
      CALL PSETR ('SUBPAGE_UPPER_RIGHT_LONGITUDE',  70.0)


C     Plot everything

      CALL PTEXT
      CALL PCONT
      CALL PCOAST



      CALL PCLOSE

      STOP
      END



C --------------------------------------------------------------------
C     PARSE_COMMAND_LINE
C     Checks the command-line for any arguments.
C     Arguments can come in pairs. Currently supported arguments are:
C     PROJECTION <CYLINDRICAL | POLAR_STEREOGRAPHIC>
C     DEVICE <PS | SVG | PNG>
C     e.g. Run the program with:
C       <progname> PROJECTION CYLINDRICAL  DEVICE SVG
C --------------------------------------------------------------------

      SUBROUTINE PARSE_COMMAND_LINE (OUTROOTNAME)

      CHARACTER*32 ARG
      CHARACTER*64 ID_TEXT
      CHARACTER*32 PROJECTION
      CHARACTER*32 DEVICE
      CHARACTER*48 EXENAME
      CHARACTER*8  MINIMAL
      CHARACTER*8  SEPARATOR
      CHARACTER*64 OUTNAME
      CHARACTER*(*) OUTROOTNAME

      CHARACTER*16 FORMATS_PS_GIF
      DIMENSION    FORMATS_PS_GIF(2)
      DATA         FORMATS_PS_GIF /'PS', 'GIF_ANIMATION'/

      CHARACTER*16 FORMATS_PS_GIF_PDF
      DIMENSION    FORMATS_PS_GIF_PDF(3)
      DATA         FORMATS_PS_GIF_PDF /'PS', 'GIF_ANIMATION', 'PDF'/

      CHARACTER*16 FORMATS_PS_GIF_SVG
      DIMENSION    FORMATS_PS_GIF_SVG(3)
      DATA         FORMATS_PS_GIF_SVG /'PS', 'GIF_ANIMATION', 'SVG'/

      CHARACTER*16 FORMATS_PS_PNG_SVG
      DIMENSION    FORMATS_PS_PNG_SVG(3)
      DATA         FORMATS_PS_PNG_SVG /'PS', 'PNG', 'SVG'/

      CHARACTER*16 FORMATS_PS_GIF_PNG_SVG
      DIMENSION    FORMATS_PS_GIF_PNG_SVG(4)
      DATA         FORMATS_PS_GIF_PNG_SVG /'PS', 'GIF_ANIMATION', 
     +                                     'PNG', 'SVG'/

      CHARACTER*16 FORMATS_ALL
      DIMENSION    FORMATS_ALL(5)
      DATA         FORMATS_ALL /'PS', 'SVG', 'PDF',
     +                          'KML', 'PNG'/

      INTEGER NUM_ARGS
      INTEGER DEVICE_SET

      DEVICE_SET = 0

      ID_TEXT = ''

      NUM_ARGS = IARGC()

      I = 1
C
C  Start GoTo
C
20    IF (I.LE.NUM_ARGS) THEN
          CALL GETARG ( I, ARG )
C
C         Set the projection?
C
          IF (ARG.EQ.'PROJECTION') THEN
              I = I + 1 
              CALL GETARG ( I, PROJECTION ) 
              CALL PSETC ('SUBPAGE_MAP_PROJECTION', PROJECTION)
C
C        Set the device?
C
          ELSEIF (ARG.EQ.'DEVICE') THEN
              I = I + 1 
              CALL GETARG ( I, DEVICE ) 

C             Set the output filename

              IF     (DEVICE.EQ.'PS')  THEN
                OUTNAME = OUTROOTNAME //   '.ps'
                CALL PSETC ('DEVICE',       DEVICE)
                CALL PSETC ('PS_DEVICE',   'ps_a4')
                CALL PSETC ('PS_FILE_NAME', OUTNAME)
              ELSEIF (DEVICE.EQ.'PS_NEW') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'PS')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'EPS') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'EPS')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'GIF') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'GIF_ANIMATION')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
                CALL PSETI ('OUTPUT_GIF_DELAY',     150)
              ELSEIF (DEVICE.EQ.'GIF_MULTI') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'GIF')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PNG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'PNG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'JPEG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'JPEG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'SVG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'SVG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'CSVG') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'CSVG')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'KML') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'KML')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)

              ELSEIF (DEVICE.EQ.'BAD') THEN
                CALL PSETC ('OUTPUT_FORMAT',  'BAD')
                CALL PSETC ('OUTPUT_NAME', OUTROOTNAME)

              ELSEIF (DEVICE.EQ.'PS_GIF') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_GIF, 2)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_GIF_PDF') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_GIF_PDF, 3)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_GIF_SVG') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_GIF_SVG, 3)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_PNG_SVG') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_PS_PNG_SVG, 3)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'PS_GIF_PNG_SVG') THEN
                CALL PSET1C ('OUTPUT_FORMATS',
     +                               FORMATS_PS_GIF_PNG_SVG, 4)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSEIF (DEVICE.EQ.'ALL') THEN
                CALL PSET1C ('OUTPUT_FORMATS', FORMATS_ALL, 5)
                CALL PSETC  ('OUTPUT_NAME', OUTROOTNAME)
              ELSE
                WRITE(*, '(A)') 'BAD DEVICE: ', DEVICE
              ENDIF
            
            DEVICE_SET = 1
C
C        Split the PostScript pages into separate files?
C
          ELSEIF (ARG.EQ.'PS_SPLIT') THEN
                CALL PSETC ('OUTPUT_PS_SPLIT',     'ON')
C
C        Turn on the numbering for the first page?
C
          ELSEIF (ARG.EQ.'FIRST_PAGE_NUMBER') THEN
                CALL PSETC ('OUTPUT_NAME_FIRST_PAGE_NUMBER', 'ON')
C
C         Set the minimal filename number width?
C
          ELSEIF (ARG.EQ.'MINIMAL') THEN
              I = I + 1 
              CALL GETARG (I, MINIMAL) 
              IF     (MINIMAL.EQ.'0')  THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 0)
              ELSEIF (MINIMAL.EQ.'1')  THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 1)
              ELSEIF (MINIMAL.EQ.'2') THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 2)
              ELSEIF (MINIMAL.EQ.'3') THEN
                CALL PSETI ('OUTPUT_FILE_MINIMAL_WIDTH', 3)
              ENDIF
C
C         Set the file number separator?
C
          ELSEIF (ARG.EQ.'SEP') THEN
              I = I + 1 
              CALL GETARG ( I, SEPARATOR ) 
              CALL PSETC ('OUTPUT_FILE_SEPARATOR', SEPARATOR)
C
C        Run using linear contouring?
C
          ELSEIF (ARG.EQ.'LINEAR') THEN
                CALL PSETC ('CONTOUR_METHOD', 'LINEAR')
                CALL PSETC ('PAGE_ID_LINE_USER_TEXT_PLOT', 'ON')
                CALL PSETC ('PAGE_ID_LINE_USER_TEXT', 'LINEAR')
          ENDIF
          I = I + 1 
          GOTO 20
      ENDIF
C
C     If no device has been set, then use PostScript by default
C
      IF (DEVICE_SET.EQ.0) THEN
        OUTNAME = OUTROOTNAME // '.ps'
        CALL PSETC ('PS_DEVICE',    'ps_a4')
        CALL PSETC ('PS_FILE_NAME', OUTNAME)
      ENDIF
C
      END
