MIL-STD-2301 Computer Graphics Metafile Cgm Implementation Standard For The National Imagery Transmission Format StandardThis standard establishes the requirements necessary to implement Computer Graphics Metafiles CGM used for the representation of symbol graphics in the National Imagery Transmission Format Standard NITFS.

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MIL-STD-2301A CONTENTS

TABLE                                                                                                                                                                    PAGE

5.1.1.4.5               Fill Color element input............................................................................................................ 15

5.1.1.4.6               Interior Style element input ...................................................................................................... 15

5.1.1.4.6.1           Hatch Index Input..................................................................................................................... 15

5.1.1.4.7               Edge Visibility element input.................................................................................................... 15

5.1.1.4.8               Edge Width element input ........................................................................................................ 16

5.1.1.4.9               Edge Type element input .......................................................................................................... 16

5.1.1.4.10            Edge Color element input ......................................................................................................... 16

5.1.1.4.11            Line Width element input ......................................................................................................... 16

5.1.1.4.12            Line Type element input ........................................................................................................... 16

5.1.1.4.13            Line Color element input .......................................................................................................... 16

5.1.1.5                  Graphical Primitive elements.................................................................................................... 17

5.1.1.5.1               Text element input.................................................................................................................... 17

5.1.1.5.2               Polygon element input .............................................................................................................. 18

5.1.1.5.2.1           Polygon Set element input ........................................................................................................ 18

5.1.1.5.3               Ellipse element input ................................................................................................................ 20

5.1.1.5.4                Polyline element input ............................................................................................................. 20

5.1.1.5.5               Elliptical Arc element input...................................................................................................... 21

5.1.1.5.6               Elliptical Arc Close element input ............................................................................................ 21

5.1.1.5.7               Rectangle element input............................................................................................................ 22

5.1.1.5.8               Circle element input ................................................................................................................. 22

5.1.1.5.9               Circular Arc Center element input ............................................................................................ 23

5.1.1.5.10            Circular Arc Center Close element input .................................................................................. 23

5.1.1.6                  Control elements....................................................................................................................... 23

5.1.1.6.1               Auxiliary Color......................................................................................................................... 23

5.1.1.6.2               Transparency............................................................................................................................ 24

5.1.1.7                  CGM binary encoding .............................................................................................................. 24

5.1.1.7.1               CGM binary encoding for input ................................................................................................ 24

5.1.2                     CGM interface output requirements .......................................................................................... 24

5.1.2.1                  Delimiter elements.................................................................................................................... 24

5.1.2.1.1               Begin Metafile element output .................................................................................................. 24

5.1.2.1.2               Begin Picture element output .................................................................................................... 25

5.1.2.1.3               Begin Picture Body element output ........................................................................................... 26

5.1.2.1.4               End Picture element output....................................................................................................... 26

5.1.2.1.5               End Metafile element output..................................................................................................... 26

5.1.2.2                  Metafile Descriptor elements .................................................................................................... 26

5.1.2.2.1               Metafile Version element output ............................................................................................... 26

5.1.2.2.2               Metafile Description element output ......................................................................................... 26

5.1.2.2.3               Metafile Element List element output ....................................................................................... 27

5.1.2.2.4               Font List element output ........................................................................................................... 27

5.1.2.3                  Picture Descriptor elements ...................................................................................................... 29

5.1.2.3.1               Color Selection Mode element output........................................................................................ 29

5.1.2.3.2               Edge Width Specification Mode element output........................................................................ 29

5.1.2.3.3               Line Width Specification Mode element output......................................................................... 29

5.1.2.3.4               VDC Extent element output...................................................................................................... 29

5.1.2.4                  Attribute elements .................................................................................................................... 31

5.1.2.4.1               Text Color element output ........................................................................................................ 31

5.1.2.4.2               Character Height element output............................................................................................... 31

5.1.2.4.3               Text Font Index element output ................................................................................................ 31

5.1.2.4.4               Character Orientation element output ....................................................................................... 31

5.1.2.4.5               Fill Color element output .......................................................................................................... 32

5.1.2.4.6               Interior Style element output..................................................................................................... 32

5.1.2.4.6.1           Hatch Index Output .................................................................................................................. 32

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