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#178: improve normalization issue (avoid loops altogether)

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thanks to Torsten
This commit is contained in:
ThorstenB 2011-06-26 19:05:28 +02:00
parent 68dec9af2d
commit b2c03e4efc
1 changed files with 2 additions and 6 deletions
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8
src/Instrumentation/heading_indicator_dg.cxx
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@ -115,7 +115,7 @@ HeadingIndicatorDG::update (double dt)
// Next, calculate time-based precession
double offset = _offset_node->getDoubleValue();
offset -= dt * (0.25 / 60.0); // 360deg/day
SG_NORMALIZE_RANGE(offset, -360.0, 360.0);
offset = SGMiscd::normalizePeriodic(-360.0,360.0,offset);
_offset_node->setDoubleValue(offset);
// No magvar - set the alignment manually
@ -153,11 +153,7 @@ HeadingIndicatorDG::update (double dt)
_last_heading_deg = heading;
heading += offset + align + error;
// sanity check: bail out when the FDM runs wild, to avoid
// SG_NORMALIZE_RANGE from freezing on huge/infinite numbers.
if (fabs(heading)>1e10)
return;
SG_NORMALIZE_RANGE(heading, 0.0, 360.0);
heading = SGMiscd::normalizePeriodic(0.0,360.0,heading);
_heading_out_node->setDoubleValue(heading);