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eda-tools/eeshow/misc.h

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2016-08-02 17:00:08 +03:00
/*
* misc.h - Helper functions for geometry and attributes
*
* Written 2016 by Werner Almesberger
* Copyright 2016 Werner Almesberger
*
* 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 2 of the License, or
* (at your option) any later version.
*/
#ifndef MISC_H
#define MISC_H
#include <stdbool.h>
static inline int mxr(int x, int y, const int m[6])
{
return x * m[1] + y * m[2];
}
static inline int myr(int x, int y, const int m[6])
{
return x * m[4] + y * m[5];
}
static inline int mx(int x, int y, const int m[6])
{
return m[0] + mxr(x, y, m);
}
static inline int my(int x, int y, const int m[6])
{
return m[3] + myr(x, y, m);
}
unsigned matrix_to_angle(const int m[6]);
bool matrix_is_mirrored(const int m[6]);
int angle_add(int a, int b);
int rx(int x, int y, int rot);
int ry(int x, int y, int rot);
#endif /* !MISC_H */