[ Maverik Level 1 functions ]


mav_navigationMouseDefaultParams

Summary

Provides control of the default implementation of mouse navigation


Syntax

void mav_navigationMouseDefaultParams(MAV_window *w, int but, MAV_navigatorFn x, float xls, float xas, MAV_navigatorFn y, float yls, float yas);


Description

Mouse navigation is controlled on a per-window (w) and per-button (but) basis and consists of two sets of three values, the first for horizontal mouse movements, the second for vertical. The three arguments in each set are:

For example, the following defines navigation triggered by the left mouse button. Horizontal movements of the mouse yaws the view; and vertical movement moves the view forward:

  mav_navigationMouseDefaultParams(mav_win_all, MAV_LEFT_BUTTON, 
                                   mav_navigateYaw, 0.02, -0.001, 
                                   mav_navigateForwards, 0.02, 0.001);

A vertical mouse movement of 100 pixels equates to the eyepoint moving 2 (100x0.02) application units forwards.

Note that the angular scaling factor is negative for mav_navigateYaw. This is because a right-handed coordinate system is assumed which implies that a positive yaw will rotate the view to the left. This is the opposite to what is required, and so a negative scaling factor is used to compensate.


See also

MAV_navigatorFn.html>MAV_navigatorFn, default navigator functions


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