s3d_vector_angle(3) calculate angle between two vectors

SYNOPSIS


#include <s3d.h>

float s3d_vector_angle(const float vector1[], const float vector2[]);

DESCRIPTION

Calculates and returns the angle between vector1 and vector2. Please note that the resulting angle is between 0 and PI, therefore not covering the whole period! To convert in degrees just do result*180/M_PI. All vectors should have the format float[3]. More info on wikipedia. http://en.wikipedia.org/wiki/Vector_(spatial)

AUTHOR

Simon Wunderlich

Author of s3d

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