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geom_utils.h File Reference

#include "cxxutils.h"
#include "vec3.h"

Go to the source code of this file.

Functions

double orientation (const vec3 &loc, const vec3 &dir)


Detailed Description

Function for determinig orientations on the sphere.

Copyright (C) 2003 Max-Planck-Society

Author:
Martin Reinecke

Reinhard Hell

Definition in file geom_utils.h.


Function Documentation

double orientation const vec3 loc,
const vec3 dir
[inline]
 

outputs the orientation when looking from point loc on the unit sphere in the direction dir. loc must be normalized. The result ranges from -pi to pi, is 0 for North and pi/2 for West, i.e. the angle is given in mathematically positive sense.

If loc is the North or South pole, the returned angle is atan2(dir.y,dir.x).

Definition at line 45 of file geom_utils.h.


Generated on Fri Jul 8 09:37:14 2005 for LevelS C++ support library