> This scheme introduces yet another for loop in Nasal, of undetermined > size. This potentially introduces yet another source of stagger to FG, or it > would if it worked, but as far as I can see it never runs here. Is it meant?
Well, anticipating your reaction, yes, at this point it's meant not to run by default. It is an experimental feature which you get to see only when running Advanced Weather and lightfield shaders - meant as a proof of concept, borrowing the load-by-default structure of Advanced Weather. I wouldn't dream of sneaking any Nasal loop running by default into FGData, I know very well how that would be received. If the idea catches, I will bother to give it a separate on-demand control structure. Having said that, your argument about performance is actually rather far fetched. The loop runs every 5 seconds (!), in each loop iteration it updates the distance table for one single interpolation point (i.e. the loop performance consumption doesn't really increase even if you have 1000 interpolation points in there because I'm not doing 1000 distances per iteration, I'm doing one), so I seriously doubt you will ever be able to measure the performance footprint of the thing even if you try really hard. So, I don't think there's a good case against this apart from general dislike of Nasal solutions. > Nevertheless, perhaps it has promise in introducing muddy water. It's an interpolation system. The output depends on the input - how to determine reasonable input is quite a different matter. My take on that is that, for whatever reason, I never got the impression that the North Sea ever looked like the Mediterrainean to me. So there is more to water color than just the reflected sky. In any case, having the possibility to change things runtime seems perferable to me over not having it. The scheme is certainly not completely realistic and also a bit simplistic - but it's more realistic than a constant water color everywhere, and it is so at the expense of one distance computation every 5 seconds (and sums which don't really count because basic arithmetics is dead-cheap to do). Cheers, * Thorsten ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
