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Prepare for windsock turbulence animation

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Erik Hofman 2017-04-11 13:39:25 +02:00
parent 43c77895b1
commit 5049ebd0bc
1 changed files with 28 additions and 0 deletions
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Nasal/windsock.nas Normal file
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###############################################################################
##
## Windsock turbulence animation
##
###############################################################################
var dt = 0.0;
var windsock = func {
var wind = getprop("/environment/wind-speed-kt") or 0;
var mag1 = getprop("/environment/turbulence/magnitude-norm") or 0;
var mag2 = getprop("/environment/turbulence/raw-magnitude-norm") or 0;
var sens = getprop("/environment/turbulence/sensitivity") or 0;
var rate = 3.1514*getprop("/environment/turbulence/rate-hz") or 0;
var tot1 = math.sin(dt*rate)*mag1*mag1;
var tot2 = math.sin(3.33*dt*rate/sens)*sens*mag2*mag2;
tot2 = mag2*tot2 + (1-mag2)*math.tan(dt/10)/5;
var total = wind + tot2 + tot1*tot2;
interpolate("/environment/windsock/wind-speed-kt", total, 0.3);
total += 5*mag2;
interpolate("/environment/windsock/wind-speed-12.5kt", total, 0.1);
dt += 0.08 + 0.02*(math.sin(dt)+math.cos(dt/(mag2+0.01))*0.33);
settimer(windsock, 0.25);
}
windsock();