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34 lines
684 B
C
34 lines
684 B
C
/*
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* misc.h - Helper functions for geometry and attributes
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*
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* Written 2016 by Werner Almesberger
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* Copyright 2016 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef MISC_H
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#define MISC_H
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#include <stdbool.h>
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static inline int mx(int x, int y, int m[6])
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{
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return m[0] + x * m[1] + y * m[2];
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}
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static inline int my(int x, int y, int m[6])
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{
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return m[3] + x * m[4] + y * m[5];
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}
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unsigned matrix_to_angle(int m[6]);
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#endif /* !MISC_H */
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