MIL-STD-2301 Revision A:1998

1 SCOPE
1.1 Scope
1.2 Purpose
1.3 Applicability
2 APPLICABLE DOCUMENTS
2.1 General
2.2 Government documents
2.2.1 Specifications, standards, and handbooks
2.2.2 Other government documents, drawings and publications
2.3 Non-government publications
2.4 Order of precedence
3 DEFINITIONS
3.1 Acronyms used in this standard
3.2 Character
3.3 Commands
3.4 Computer graphics metafile (CGM)
3.5 Elements
3.6 Integer parameters
3.7 Virtual device coordinates (VDC) space
4 GENERAL REQUIREMENTS
4.1 CGM commands
4.2 CGM binary encoding
4.3 CGM element flow
5 DETAILED REQUIREMENTS
5.1 Interface requirements
5.1.1 CGM interface input requirements
5.1.1.1 Delimiter elements
5.1.1.2 Metafile descriptor elements
5.1.1.3 Picture descriptor elements
5.1.1.4 Attribute elements
5.1.1.5 Graphical primitive elements
5.1.1.6 Control elements
5.1.1.7 CGM binary encoding
5.1.2 CGM interface output requirements
5.1.2.1 Delimiter elements
5.1.2.2 Metafile descriptor elements
5.1.2.3 Picture descriptor elements
5.1.2.4 Attribute elements
5.1.2.5 Graphical primitive elements
5.1.2.6 Control elements
5.1.2.7 CGM binary encoding
5.2 Functional requirements
5.2.1 CGM element position requirements
5.2.1.1 CGM element position input requirements
5.2.1.2 CGM element position output requirements
5.2.2 CGM element functional requirements
5.2.2.1 CGM element functional input requirements
5.2.2.2 CGM element functional output requirements
6 NOTES
6.1 CGM example metafiles
6.1.1 Polygon example
6.1.1.1 Polygon set example
6.1.2 Text example
6.1.3 Ellipse example
6.1.4 Polyline example
6.1.5 Elliptical arc example
6.1.6 Elliptical arc example
6.2 Color to gray scale conversion
6.3 Subject term (key word) listing
6.4 Changes from previous issue
FIGURE
1 Integer parameters
2 Small VDC extent input
3 Large VDC extent input
4 Small VDC extent output
5 Large VDC extent output
6 Elliptical arc orientation
TABLE

Gives the requirements that are necessary to implement Computer Graphics Metafiles (CGMs) for use in representing symbol graphics in the National Imagery Transmission Format Standard (NITFS).