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Canvas Maps: Difference between revisions
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→Shared Requirements (MFDs and GUI maps)
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Like you say, the API requirements for canvas and the mfd module will become clearer once existing dialogs and gauges are getting ported. I would however be careful not to put too much special stuff into the generic canvas module. | Like you say, the API requirements for canvas and the mfd module will become clearer once existing dialogs and gauges are getting ported. I would however be careful not to put too much special stuff into the generic canvas module. | ||
We need to keep in mind that once the hard coded Map dialog is getting ported, there will be lots of overlapping functionality with similar "displays", like the NavDisplay, agradar, wxradar - all of these are basically about mapping a geo-position to 2D screen space (horizontal currently). | |||
The Canvas system's mapping mode loosely follows the ideas from ARINC 661. | |||
The current hard coded NavDisplay is really an ARINC 661 display - it takes a list of symbols, a list of items and combines then using a projection to create a final display. The only additional code is to deal with special things that can't easily be described by a simply symbol, especially the flight-plan/route path. | |||
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And it would actually make sense to support the same thing for GUI widgets, too - i.e. allow them to be rendered as part of fully functioning cockpit instruments, that may seem like over-engineering now - but all modern airliners use A661 meanwhile, and they all support "real GUIs" as part of the MFD/CDU - i.e. control boxes, dialog boxes, check boxes, buttons etc. | And it would actually make sense to support the same thing for GUI widgets, too - i.e. allow them to be rendered as part of fully functioning cockpit instruments, that may seem like over-engineering now - but all modern airliners use A661 meanwhile, and they all support "real GUIs" as part of the MFD/CDU - i.e. control boxes, dialog boxes, check boxes, buttons etc. | ||
So it would be great to support the FG canvas widget here, too - we could get it for free like this. | So it would be great to support the FG canvas widget here, too - we could get it for free like this. | ||
== Moving Maps == | == Moving Maps == | ||