1 files changed, 31 insertions, 0 deletions
diff --git a/src/datavis3d/utils/camerahelper_p.h b/src/datavis3d/utils/camerahelper_p.h
new file mode 100644
index 00000000..340eb982
--- /dev/null
+++ b/src/datavis3d/utils/camerahelper_p.h
@@ -0,0 +1,31 @@
+#ifndef CAMERAPOSITIONER_P_H
+#define CAMERAPOSITIONER_P_H
+
+#include "qdatavis3dglobal.h"
+
+class QMatrix4x4;
+class QVector3D;
+class QPoint;
+class QPointF;
+
+QTCOMMERCIALDATAVIS3D_BEGIN_NAMESPACE
+
+class CameraHelper
+{
+public:
+    // How fast camera rotates when mouse is dragged. Default is 100.
+    static void setRotationSpeed(int speed);
+    // Set camera rotation in degrees
+    static void setCameraRotation(QPointF rotation);
+    // Set default camera orientation. Position's x and y should be 0.
+    static void setDefaultCameraOrientation(QVector3D defaultPosition
+                                     , QVector3D defaultTarget
+                                     , QVector3D defaultUp);
+    static QMatrix4x4 calculateViewMatrix(QPoint mousePos, int zoom
+                                          , int screenWidth, int screenHeight);
+    static void updateMousePos(QPoint mousePos);
+};
+
+QTCOMMERCIALDATAVIS3D_END_NAMESPACE
+
+#endif