MRPT 3D viewport navigation: mouse and keyboard usage

All MRPT applications use the following convention:

• Orbit camera: Left-button pressed + mouse move.

• Zoom in / out:

  • Mouse scroll wheel, or

  • SHIFT+Left-button pressed + mouse move up/down.

• Look around (pivot camera): CTRL+Left-button pressed + mouse move up/down.

• Pan (XY plane): Right button or wheel pressed + mouse move.

• Move camera along Z axis: SHIFT+Left-button pressed + mouse move left/right, or (starting in MRPT 2.3.2) SHIFT+scroll wheel for faster up/down vertical motion.

The implementation of the features above by handling mouse and keyboard events can be found in:

• mrpt::gui::CGlCanvasBase for Qt and wxWidgets GUIs.

• mrpt::gui::CGlCanvasBaseHeadless for nanogui GUIs.