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)

double v_angle (const vec3 &v1, const vec3 &v2)

Detailed Description

Geometric utility functions.

Author:: Martin Reinecke
Reinhard Hell

Definition in file geom_utils.h.

Function Documentation

double orientation	(	const vec3 &	loc,
		const vec3 &	dir
	)			`[inline]`

Returns 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.

double v_angle	(	const vec3 &	v1,
		const vec3 &	v2
	)			`[inline]`

Returns the angle between v1 and v2 in radians.

Definition at line 61 of file geom_utils.h.