* Melchior FRANZ -- Monday 10 July 2006 20:24:
> If you let fgfs tell sg which node to get the density from, and
> make this a node with tied getter function, [...]
Or, illustrated with some code:
fgfs:
static double calc_density() {
// stuff
return density;
}
void Whatever::bind() {
fgTie("/calculate/density", calc_density);
}
void Whatever::unbind() {
fgUntie("/calculate/density);
}
now you tell sg that it can have the density from /calculate/density,
and whenever sg or anyone else reads that property, the density is
calculated freshly (and only then).
m.
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