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nav: handle route responses with duplicate points #23769

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merged 1 commit into from
Feb 15, 2022
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nav: handle route responses with duplicate points #23769

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5 changes: 5 additions & 0 deletions selfdrive/ui/qt/maps/map_helpers.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,11 @@ static float dot(QGeoCoordinate v, QGeoCoordinate w) {
}

float minimum_distance(QGeoCoordinate a, QGeoCoordinate b, QGeoCoordinate p) {
// If a and b are the same coordinate the computation below doesn't work
if (a.distanceTo(b) < 0.01) {
return a.distanceTo(p);
}

const QGeoCoordinate ap = sub(p, a);
const QGeoCoordinate ab = sub(b, a);
const float t = std::clamp(dot(ap, ab) / dot(ab, ab), 0.0f, 1.0f);
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