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

5.1.1.4.8  Edge Width element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Edge Width element using the following format.  Variable edge widths are supported for

use in filled-area primitives.

TABLE XXXV.  Edge Width input.

EDGE_WIDTH

5.1.1.4.9  Edge Type element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Edge Type element using the following format.  The Edge_Type parameter can be solid (1), dashed (2), dotted (3), dash-dot (4), and dash-dot-dot (5).

TABLE XXXVI.  Edge Type input.

MSB                                                                                                                                                               LSB

15        14      13       12       11       10        9         8         7         6          5         4         3          2       1         0

5                                                           27                                                                 2                                 = 0x5362

EDGE_WIDTH

5.1.1.4.10  Edge Color element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Edge Color element using the following format.  Edge Color is supported for use in

filled-area primitives.  RGB values are each specified using a single byte, and the last byte of the command shall be a null byte.

TABLE XXXVII.  Edge Color input.

5                                                           29                                                                 3                                 = 0x53A3

RED                                                                               GREEN BLUE                                                                                    0

5.1.1.4.11  Line Width element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Line Width element using the following format.  Variable line widths are supported for use by line primitives.

TABLE XXXVIII.  Line Width input.

LINE_WIDTH

5.1.1.4.12  Line Type element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Line Type element using the following format.  The Line_Type parameter can be solid (1), dashed (2), dotted (3), dash-dot (4), and dash-dot-dot (5).

TABLE XXXIX.  Line Type input.

MSB                                                                                                                                                               LSB

15        14      13       12       11       10        9         8         7         6          5         4         3          2       1         0

5                                                            2                                                                  2                                 = 0x5042

LINE_TYPE

5.1.1.4.13  Line Color element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Line Color element using the following format.  Line colors are supported for use by the

line primitive.  RGB values are each specified using a single byte, and the last byte of the command shall be a null byte.

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