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

5.1.2.4.7               Edge Visibility element output.................................................................................................. 32

5.1.2.4.8               Edge Width element output....................................................................................................... 32

5.1.2.4.9               Edge Type element output......................................................................................................... 33

5.1.2.4.10            Edge Color element output........................................................................................................ 33

5.1.2.4.11            Line Width element output ....................................................................................................... 33

5.1.2.4.12            Line Type element output ......................................................................................................... 33

5.1.2.4.13            Line Color element output ........................................................................................................ 33

5.1.2.5                  Graphical Primitive elements.................................................................................................... 34

5.1.2.5.1               Text element output .................................................................................................................. 34

5.1.2.5.2               Polygon element output............................................................................................................. 35

5.1.2.5.2.1           Polygon Set element output....................................................................................................... 35

5.1.2.5.3               Ellipse element output .............................................................................................................. 37

5.1.2.5.4               Polyline element output ............................................................................................................ 37

5.1.2.5.5               Elliptical Arc element output .................................................................................................... 38

5.1.2.5.6               Elliptical Arc Close element output........................................................................................... 38

5.1.2.5.7               Rectangle element output.......................................................................................................... 39

5.1.2.5.8               Circle element output................................................................................................................ 39

5.1.2.5.9               Circular Arc Center element output .......................................................................................... 40

5.1.2.5.10            Circular Arc Center Close element output................................................................................. 40

5.1.2.6                  Control elements....................................................................................................................... 41

5.1.2.6.1               Auxiliary Color......................................................................................................................... 41

5.1.2.6.2               Transparency............................................................................................................................ 41

5.1.2.7                  CGM binary encoding .............................................................................................................. 41

5.1.2.7.1               CGM binary encoding for output .............................................................................................. 41

5.2                        Functional requirements ........................................................................................................... 41

5.2.1                     CGM element position requirements......................................................................................... 41

5.2.1.1                  CGM element position input requirements................................................................................ 41

5.2.1.1.1               Begin Metafile element position for input ................................................................................. 41

5.2.1.1.2               Begin Picture element position for input ................................................................................... 42

5.2.1.1.3               Begin Picture Body element position for input .......................................................................... 42

5.2.1.1.4               End Picture element position for input ...................................................................................... 42

5.2.1.1.5               End Metafile element position for input .................................................................................... 42

5.2.1.1.6               Metafile Descriptor elements position for input......................................................................... 42

5.2.1.1.7               Picture Descriptor elements position for input........................................................................... 42

5.2.1.1.8               Attribute elements position for input......................................................................................... 42

5.2.1.1.9               Graphical Primitive elements position for input ........................................................................ 42

5.2.1.2                  CGM element position output requirements .............................................................................. 42

5.2.1.2.1               Begin Metafile element position for output ............................................................................... 42

5.2.1.2.2               Begin Picture element position for output ................................................................................. 42

5.2.1.2.3               Begin Picture Body element position for output......................................................................... 42

5.2.1.2.4               End Picture element position for output .................................................................................... 42

5.2.1.2.5               End Metafile element position for output .................................................................................. 42

5.2.1.2.6               Metafile Descriptor elements position for output ....................................................................... 42

5.2.1.2.7               Picture Descriptor elements position for output ......................................................................... 43

5.2.1.2.8               Attribute elements position for output ....................................................................................... 43

5.2.1.2.9               Graphical Primitive elements position for output ...................................................................... 43

5.2.2                     CGM element functional requirements ..................................................................................... 43

5.2.2.1                  CGM element functional input requirements ............................................................................ 43

5.2.2.1.1               CGM input required elements................................................................................................... 43

5.2.2.1.2               Metafile Description element contents required for input .......................................................... 43

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