is the Alternate Operational Condition supported?

[KurtZachary]

I'm trying to get the alternate operational condition to show up to no avail. I copied the TacticalSymbols class and modified it so that the AVList passed when creating the symbol object has the value set:

modifiers.setValue(SymbologyConstants.OP ERATIONAL_CONDITION_ALTERNATE, SymbologyConstants.OPERATIONAL_CONDITION _ALTERNATE_DAMAGED);

next I create the symbol object.

and then I make sure the modifiers will show up:
symbol.setShowGraphicModifiers(true);

and then I add the symbol object to the layer.


All of the other modifiers I set show up but the Alternate Operational Condition does not. Any ideas?

[pabercrombie]

There is a bug in the 1.3 release that prevents the alternate operational condition modifier from rendering. The bug was fixed in svn revision #601, and the fix will be available in the 5/22 build. See WWJ-285.

You can enable the alternate modifier like this:

symbol.setModifier(SymbologyConstants.OPERATIONAL_CONDITION_ALTERNATE, true);

[KurtZachary]

I'll be looking forward to that fix.

[KurtZachary]

I downloaded worldwind-daily-305.605.zip and tried to get the operational condition alternate to display but it isn't working. Is the fix in that daily build?

[pabercrombie]

Yes, it should work in that build. Here is an example of how to create a symbol using the alternate indicator:

TacticalSymbol symbol = new MilStd2525TacticalSymbol("SHGXUCFRMS----G", Position.fromDegrees(32.4014, 63.3894, 0));
symbol.setModifier(SymbologyConstants.OPERATIONAL_CONDITION_ALTERNATE, true);

Note that the operational condition is encoded in the SIDC. In the example above, the "X" in position 4 of the SIDC indicates that the entity has been destroyed.

Please try the code above. If it doesn't work for you, can you explain what happens? (Does the indicator not appear? Does it appear incorrectly?)

[KurtZachary]

It's Friday so my reading skills are challenged evidently. I was trying to use setValue and not setModifier and I didn't have the right SIDC. In looking at the code (in SymbologyConstants) it looks like it uses 2 characters to indicate the alternate operational condition and not just 1 but the SIDC only uses 1 character? Is the "P" portion of the 2 characters not used so the 4 possibilities for the SIDC are C, D, X, and F?

Thanks for the quick response!

[pabercrombie]

Yes, the "P" is ignored. The valid values in the SIDC are defined by the 2525 spec, and are slightly different for each appendix. For Appendix A (Warfighting symbology), the valid values are C, D, X, and F, as defined in Table A-I on pg 51 of MIL-STD-2525C.