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Ref T736 Refactor CRadarComponent so the polar-to-cartesian conversion happens in one place only.

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This commit is contained in:
Mat Sutcliffe
2019-09-25 19:25:17 +01:00
committed by Klaus Basan
parent 6d1f0328bf
commit 7b538a560a
2 changed files with 9 additions and 3 deletions
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10
src/blackgui/components/radarcomponent.cpp
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@@ -133,7 +133,7 @@ namespace BlackGui
for (qreal angle = 0.0; angle < 359.0; angle += 30.0)
{
const QLineF line(0.0, 0.0, 100.0 * qCos(qDegreesToRadians(angle)), -100.0 * qSin(qDegreesToRadians(angle)));
const QLineF line({ 0.0, 0.0 }, polarPoint(100.0, qDegreesToRadians(angle)));
QGraphicsLineItem *li = new QGraphicsLineItem(line, &m_radials);
li->setPen(pen);
}
@@ -156,7 +156,7 @@ namespace BlackGui
const double bearingRad = sa.getRelativeBearing().value(CAngleUnit::rad());
const int groundSpeedKts = sa.getGroundSpeed().valueInteger(CSpeedUnit::kts());
QPointF position(distanceNM * qSin(bearingRad), -distanceNM * qCos(bearingRad));
QPointF position(polarPoint(distanceNM, bearingRad));
QGraphicsEllipseItem *dot = new QGraphicsEllipseItem(-2.0, -2.0, 4.0, 4.0, &m_radarTargets);
dot->setPos(position);
@@ -191,7 +191,7 @@ namespace BlackGui
double headingRad = sa.getHeading().value(CAngleUnit::rad());
QPen pen(Qt::green, 1);
pen.setCosmetic(true);
QGraphicsLineItem *li = new QGraphicsLineItem(QLineF(0.0, 0.0, 20.0 * qSin(headingRad), -20.0 * qCos(headingRad)), dot);
QGraphicsLineItem *li = new QGraphicsLineItem(QLineF({ 0.0, 0.0 }, polarPoint(20.0, headingRad)), dot);
li->setFlags(QGraphicsItem::ItemIgnoresTransformations);
li->setPen(pen);
}
@@ -282,7 +282,11 @@ namespace BlackGui
if (!myself) { return; }
myself->refreshTargets();
});
}
QPointF CRadarComponent::polarPoint(double distance, double angleRadians)
{
return { distance * qSin(angleRadians), -distance * qCos(angleRadians) };
}
} // namespace
} // namespace