tactical graphics in nasas world wind example

#Tactical graphics in nasas world wind example how to#
#Tactical graphics in nasas world wind example zip file#
#Tactical graphics in nasas world wind example code#

The following table shows the all eight icons for the Movement Control Center (MCC) Theater graphic, and how the final symbol will appear when created with and without a frame. WorldWind will place the icon on the appropriate frame, depending on the standard identity. We just need to provide the icon itself, not the frame. WorldWind will replace white with the icon color, depending on the symbol’s standard identity and other options. The new icons should be white and black on a transparent background. The “s” in position 1 indicates the Warfighting scheme (Appendix A), and the “a” in position 3 indicates the Air track, which determines the shape of the icon’s frame. The standard identity is position 2 (f, u, h, n), the state is position 4 (p, a), and the function ID is positions 5-10. The file names above are SIDC codes with some fields masked out with hyphens.

The present version of the symbol should include the symbol drawn with solid lines, and the anticipated version should include the symbol drawn with dashed lines. However, many symbols can use the same image for all four standard identities. Each standard identity has a different frame shape, so a different version of the symbol can be provided for each frame. S-A-ZA- S-A-ZB- S-A-ZC- S-A-ZD-įor each new symbol, we need to provide eight icons for every combination of the four standard identities (friendly, neutral, unknown, and hostile) and the two status possibilities (present or anticipated). The new SIDCs (with some fields masked out) are: We’ll put our new symbols in the Air battle dimension. The Battle Dimension (Air, Ground, Sea Surface, etc.) determines the shape of the icon’s frame. The Warfighting scheme includes Battle Dimension as part of the SIDC. For example you might choose the Warfighting scheme (Appendix A), and Function IDs ZA, ZB, and ZC. To add new symbols to the specification, first choose a scheme (each appendix of 2525C is a different scheme) for the new symbols, and then choose Function IDs that are not used by other symbols in that scheme. The Function ID part of the SIDC is the part that identifies a particular symbol within an appendix. The table below shows the format of a Warfighting SIDC (from page 51 of the specification). The graphic below shows an example of a SIDC from Tactical Graphics (Appendix B). The format is slightly different for each appendix of 2525C.

#Tactical graphics in nasas world wind example code#

Note that this approach is not guaranteed to be compatible with future revisions of 2525 since it relies on using identifier that are currently unused by 2525C.Īn SIDC is a 15 character code that identifies a symbol in 2525C and its attributes.

#Tactical graphics in nasas world wind example zip file#

WorldWind’s symbol resolution logic will work as usual with the new IDs, and WorldWind will look for the new symbols alongside the existing 2525C symbols in a local symbol zip file or directory. The new symbols need to be assigned Function IDs that are not used by other symbols in 2525C. Symbols can be added to the 2525C symbol set by naming the new symbols using the SIDC scheme used by 2525C. The details described here are specific to 2525C, but the concepts apply to all symbol sets.

#Tactical graphics in nasas world wind example how to#

This guide describes how to add symbols to the MIL-STD-2525C symbol set. The easiest way to add a small number of symbols is to assign identifiers to the new symbols that fit into the naming convention of an existing symbol set, and provide icons for the new symbols along side WorldWind’s standard icons. The application could implement a new symbology set for the custom symbols, but that may be too much work if the number of symbols is small. Applications that use symbology may need to use some custom symbols.