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Fixed jump around the north indication.

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david 2002-10-27 20:32:34 +00:00
parent f80b8660bf
commit 9a5080b6ad
1 changed files with 9 additions and 0 deletions
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9
src/Instrumentation/heading_indicator.cxx
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@ -83,6 +83,15 @@ HeadingIndicator::update (double dt)
// introducing errors.
double factor = 0.01 / (spin * spin * spin * spin * spin * spin);
double heading = _heading_in_node->getDoubleValue();
// Now, we have to get the current
// heading and the last heading into
// the same range.
while ((heading - _last_heading_deg) > 180)
_last_heading_deg += 360;
while ((heading - _last_heading_deg) < -180)
_last_heading_deg -= 360;
heading = fgGetLowPass(_last_heading_deg, heading, dt/factor);
_last_heading_deg = heading;