Experiment with capturing cursor via ~ press

qgis · Jan 13, 2021 · 2b9d772 · 2b9d772
1 parent 3d9afb5
commit 2b9d772
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Showing 2 changed files with 25 additions and 3 deletions.
diff --git a/src/3d/qgscameracontroller.cpp b/src/3d/qgscameracontroller.cpp
@@ -430,6 +430,19 @@ void QgsCameraController::onMouseReleased( Qt3DInput::QMouseEvent *mouse )
 
 void QgsCameraController::onKeyPressed( Qt3DInput::QKeyEvent *event )
 {
+  if ( event->key() == Qt::Key_QuoteLeft )
+  {
+    if ( mCameraNavigationMode == NavigationMode::FlyNavigation )
+    {
+      mCaptureFpsMouseMovements = !mCaptureFpsMouseMovements;
+      if ( mCaptureFpsMouseMovements )
+        qApp->setOverrideCursor( QCursor( Qt::BlankCursor ) );
+      else
+        qApp->restoreOverrideCursor();
+      return;
+    }
+  }
+
   if ( mCameraNavigationMode == NavigationMode::FlyNavigation )
   {
     if ( event->isAutoRepeat() )
@@ -550,11 +563,12 @@ void QgsCameraController::onKeyPressedFlyNavigation()
 
 void QgsCameraController::onPositionChangedFlyNavigation( Qt3DInput::QMouseEvent *mouse )
 {
-  if ( !mMousePressed )
+  if ( !mMousePressed && !mCaptureFpsMouseMovements )
     return;
+
   double dx = mouse->x() - mMousePos.x();
   double dy = mouse->y() - mMousePos.y();
-  if ( mPressedButton ==  Qt3DInput::QMouseEvent::LeftButton || mPressedButton ==  Qt3DInput::QMouseEvent::MiddleButton )
+  if ( mPressedButton ==  Qt3DInput::QMouseEvent::LeftButton || mPressedButton ==  Qt3DInput::QMouseEvent::MiddleButton || ( mCaptureFpsMouseMovements && mPressedButton != Qt3DInput::QMouseEvent::RightButton ) )
   {
     float diffPitch = 0.2f * dy;
     float diffYaw = - 0.2f * dx;
@@ -570,7 +584,14 @@ void QgsCameraController::onPositionChangedFlyNavigation( Qt3DInput::QMouseEvent
     moveCameraPositionBy( 5.0 * mCameraMovementSpeed * cameraPosDiff );
   }
 
-  mMousePos = QPoint( mouse->x(), mouse->y() );
+  if ( mCaptureFpsMouseMovements )
+  {
+    QCursor::setPos( QCursor::pos().x() - dx, QCursor::pos().y() - dy );
+  }
+  else
+  {
+    mMousePos = QPoint( mouse->x(), mouse->y() );
+  }
 }
 
 void QgsCameraController::onKeyReleased( Qt3DInput::QKeyEvent *event )

diff --git a/src/3d/qgscameracontroller.h b/src/3d/qgscameracontroller.h
@@ -234,6 +234,7 @@ class _3D_EXPORT QgsCameraController : public Qt3DCore::QEntity
     double mCameraMovementSpeed = 5.0;
 
     QSet< int > mDepressedKeys;
+    bool mCaptureFpsMouseMovements = false;
     QTimer *mFpsNavTimer = nullptr;
 };