Reads rotation sensor on timer instead whenever new reading arrives

No longer vulnerable to other applications changing the sensor speed.
Speed has changed, needs calibrating back to what it was.
Bug: Saw the ship hopping.
Using animation no longer makes sense, needs to be removed (perhaps the
cause of the hop too...)

diff --git a/orientationcontrolledgraphicspixmapobject.cpp b/orientationcontrolledgraphicspixmapobject.cpp
index 3c71e87..d5bc388 100644 (file)
--- a/orientationcontrolledgraphicspixmapobject.cpp
+++ b/orientationcontrolledgraphicspixmapobject.cpp
@@ -36,15 +36,12 @@ OrientationControlledGraphicsPixmapObject::OrientationControlledGraphicsPixmapOb
     QObject(), QGraphicsPixmapItem (pixmap, parent)
 {
 
-    connect(&rotationSensor_,SIGNAL(readingChanged()),this,SLOT(readRotationSensor()));
+    rotationReadingInitialized_ = false;
+    rotationReadingTimer_.setInterval(100);
+    connect(&rotationSensor_,SIGNAL(readingChanged()),this,SLOT(rotationSensorReady()));
+
 
-//    qrangelist rangelist = rotationSensor_.availableDataRates();
 
-//    qDebug() << rangelist.length() << "ranges found";
-//    foreach (qrange range, rangelist)
-//    {
-//        qDebug() << "Rotation sensor: " << range.first <<", " << "range.second";
-//    }
 }
 
 void OrientationControlledGraphicsPixmapObject::startMoving()
@@ -58,6 +55,8 @@ void OrientationControlledGraphicsPixmapObject::startMoving()
 void OrientationControlledGraphicsPixmapObject::stopMoving()
 {
     rotationSensor_.stop();
+    rotationReadingInitialized_ = false;
+    rotationReadingTimer_.stop();
 //    qDebug () << "trying to stop the sensor";
 }
 
@@ -66,6 +65,17 @@ void OrientationControlledGraphicsPixmapObject::readRotationSensor()
     if (!scene()) //no movement if this item does not belong to a scene
         return;
 
+
+//Test reading sensor information. Since qDebug has ceased to work, uses qCritical instead...
+//        qrangelist rangelist = rotationSensor_.availableDataRates();
+
+//        qCritical() << rangelist.length() << "ranges found";
+//        foreach (qrange range, rangelist)
+//        {
+//            qCritical() << "Rotation sensor: " << range.first <<", " << "range.second";
+//        }
+//        qCritical() << "Current data date is " << rotationSensor_.dataRate();
+
     QRect sceneRectangle = scene()->sceneRect().toRect();
 
 
@@ -136,3 +146,15 @@ void OrientationControlledGraphicsPixmapObject::setPos(const QPointF &pos)
     }
 
 }
+
+
+void OrientationControlledGraphicsPixmapObject::rotationSensorReady()
+{
+
+    if (!rotationReadingInitialized_)
+    {
+        connect(&rotationReadingTimer_,SIGNAL(timeout()),this,SLOT(readRotationSensor()));
+        rotationReadingInitialized_ = true;
+        rotationReadingTimer_.start();
+    }
+}

diff --git a/orientationcontrolledgraphicspixmapobject.h b/orientationcontrolledgraphicspixmapobject.h
index 6bfd1c1..802766b 100644 (file)
--- a/orientationcontrolledgraphicspixmapobject.h
+++ b/orientationcontrolledgraphicspixmapobject.h
@@ -25,6 +25,7 @@
 
 #include <QGraphicsPixmapItem>
 #include <QRotationSensor>
+#include <QTimer>
 
 QTM_USE_NAMESPACE
 
@@ -48,7 +49,8 @@ public slots:
     void startMoving();
     void stopMoving();
     void readRotationSensor();
-      virtual void setPos(const QPointF &pos);
+    virtual void setPos(const QPointF &pos);
+    void rotationSensorReady();
 
 
 protected:
@@ -62,6 +64,8 @@ private:
 
     QRotationSensor rotationSensor_;
     QPointF oldOldPos_;
+    QTimer rotationReadingTimer_;
+    bool rotationReadingInitialized_;