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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50 - 51 - 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59 - 60 - 61 - 62 - 63 - 64 - 65 - 66 - 67 - 68 - 69 - 70 - 71 - 72 - 73 - 74 - 75 - 76

MIL-STD-2301A CONTENTS

TABLE                                                                                                                                                                    PAGE

5.2.2.2.12            Font names for output............................................................................................................... 49

5.2.2.2.13            Text Font Index required for output .......................................................................................... 50

5.2.2.2.14            Edge widths for output.............................................................................................................. 50

5.2.2.2.15            Line widths for output............................................................................................................... 50

5.2.2.2.16            Edge types required for output .................................................................................................. 50

5.2.2.2.17            Line types required for output ................................................................................................... 50

5.2.2.2.18            Interior styles required for output.............................................................................................. 50

5.2.2.2.19            Text element requirements for output........................................................................................ 50

5.2.2.2.20            Character Height requirements for output ................................................................................. 50

5.2.2.2.21            Polyline element requirements for output .................................................................................. 50

5.2.2.2.22            Polygon and Polygon Set element requirements for output ........................................................ 50

5.2.2.2.23            Generate and output sequential order ........................................................................................ 50

5.2.2.2.24            Output Text element ................................................................................................................. 50

5.2.2.2.25            Output Polygon and Polygon Set element.................................................................................. 51

5.2.2.2.26            Output Ellipse element ............................................................................................................. 51

5.2.2.2.27            Output Polyline element............................................................................................................ 51

5.2.2.2.28            Output Elliptical Arc element ................................................................................................... 51

5.2.2.2.29            Output Elliptical Arc Close element.......................................................................................... 52

5.2.2.2.30            Output Rectangle element......................................................................................................... 52

5.2.2.2.31            Output Circle element............................................................................................................... 52

5.2.2.2.32            Output Circular Arc Center element ......................................................................................... 52

5.2.2.2.33            Output Circular Arc Center Close element................................................................................ 53

5.2.2.2.34            Auxiliary Color for output ........................................................................................................ 53

5.2.2.2.35            Transparency for output............................................................................................................ 53

5.2.2.2.36            CGM element defaults for output .............................................................................................. 53

5.2.2.2.37            Degeneracy............................................................................................................................... 53

6.                          NOTES..................................................................................................................................... 53

6.1                        CGM example Metafiles ........................................................................................................... 53

6.1.1                     Polygon example ...................................................................................................................... 53

6.1.1.1                  Polygon Set example................................................................................................................. 55

6.1.2                     Text example............................................................................................................................ 57

6.1.3                     Ellipse example ........................................................................................................................ 58

6.1.4                     Polyline example ...................................................................................................................... 59

6.1.5                     Elliptical Arc example .............................................................................................................. 60

6.1.6                     Elliptical Arc example .............................................................................................................. 62

6.2                        Color to gray scale conversion .................................................................................................. 63

6.3                        Subject  term (key word) listing ................................................................................................ 63

6.4                        Changes from previous issue..................................................................................................... 63

FIGURE

1.                          Integer parameters ...................................................................................................................... 4

2.                          Small VDC Extent input........................................................................................................... 13

3.                          Large VDC Extent input........................................................................................................... 13

4.                          Small VDC Extent output ......................................................................................................... 30

5.                          Large VDC Extent output ......................................................................................................... 30

6.                          Elliptical Arc orientation .......................................................................................................... 62

TABLE

I.                          Short form of CGM command .................................................................................................... 5

II.                         Long form of CGM command..................................................................................................... 6

III.                        Begin Metafile padded, short form input..................................................................................... 7

vii