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83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*
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* meas.h - Measurements
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*
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* Written 2009, 2010 by Werner Almesberger
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* Copyright 2009, 2010 by 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 MEAS_H
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#define MEAS_H
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#include "coord.h"
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#include "expr.h"
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#include "bitset.h"
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typedef int (*lt_op_type)(struct coord a, struct coord b);
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struct vec;
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struct obj;
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struct frame_qual {
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const struct frame *frame;
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struct frame_qual *next;
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};
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struct meas {
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enum meas_type {
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mt_xy_next,
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mt_x_next,
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mt_y_next,
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mt_xy_max,
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mt_x_max,
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mt_y_max,
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mt_n
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} type;
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char *label; /* or NULL */
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int inverted;
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/* low is obj->base */
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struct vec *high;
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struct expr *offset;
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/* frame qualifiers */
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struct frame_qual *low_qual;
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struct frame_qual *high_qual;
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};
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struct sample {
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struct coord pos;
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struct bitset *frame_set;
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struct sample *next;
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};
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extern int n_samples;
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int lt_x(struct coord a, struct coord b);
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int lt_y(struct coord a, struct coord b);
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int lt_xy(struct coord a, struct coord b);
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const struct sample *meas_find_min(lt_op_type lt, const struct sample *s,
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const struct bitset *qual);
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const struct sample *meas_find_next(lt_op_type lt, const struct sample *s,
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struct coord ref, const struct bitset *qual);
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const struct sample *meas_find_max(lt_op_type lt, const struct sample *s,
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const struct bitset *qual);
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void reset_samples(struct sample **samples, int n);
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void meas_start(void);
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void meas_post(const struct vec *vec, struct coord pos,
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const struct bitset *frame_set);
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int instantiate_meas(int n_frames);
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#endif /* !MEAS_H */
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