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/*
* Copyright (C) 2013 Paul Kocialkowski
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/input.h>
#ifndef _ORIENTATION_H_
#define _ORIENTATION_H_
/*
* Vector
*/
struct vector {
float x;
float y;
float z;
};
typedef struct vector vector;
void vector_add(vector *v, vector *a);
void vector_multiply(vector *v, float k);
void vector_cross(vector *v, vector *c, vector *out);
float vector_scalar(vector *v, vector *d);
float vector_length(vector *v);
/*
* Input
*/
int64_t input_timestamp(struct input_event *event);
int input_open(char *name, int write);
int sysfs_path_prefix(char *name, char *path_prefix);
#endif
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