Save angles in radians

Because that's better than loading degrees as radians

Also, 0 mod 360 = 0, not 360

qt/widgets/instrumentview/src/InstrumentWidgetEncoder.cpp

@@ -406,8 +406,8 @@ QMap<QString, QVariant>
 InstrumentWidgetEncoder::encodeSector(const Shape2DSector *obj) {
   const auto outerRadius = obj->getDouble("outerRadius");
   const auto innerRadius = obj->getDouble("innerRadius");
-  const auto startAngle = obj->getDouble("startAngle");
-  const auto endAngle = obj->getDouble("endAngle");
+  const auto startAngle = obj->getDouble("startAngle") * M_PI / 180;
+  const auto endAngle = obj->getDouble("endAngle") * M_PI / 180;
   const auto centerX = obj->getPoint("center").x();
   const auto centerY = obj->getPoint("center").y();
 

qt/widgets/instrumentview/src/Shape2D.cpp

@@ -1069,11 +1069,11 @@ void Shape2DSector::setDouble(const QString &prop, double value) {
     m_innerRadius = m_outerRadius >= value ? value : 0.99 * m_outerRadius;
   } else if (prop == "startAngle") {
     m_startAngle = fmod(value, 360);
-    m_startAngle = m_startAngle > 0 ? m_startAngle : m_startAngle + 360;
+    m_startAngle = m_startAngle >= 0 ? m_startAngle : m_startAngle + 360;
     m_startAngle *= to_radians;
   } else if (prop == "endAngle") {
     m_endAngle = fmod(value, 360);
-    m_endAngle = m_endAngle > 0 ? m_endAngle : m_endAngle + 360;
+    m_endAngle = m_endAngle >= 0 ? m_endAngle : m_endAngle + 360;
     m_endAngle *= to_radians;
   } else
     return;