21 lines
518 B
C
21 lines
518 B
C
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#ifndef PATTERN_H
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#define PATTERN_H
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typedef struct { int dx, dy; } cell_offset_t;
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typedef struct {
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const char *name;
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int count;
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const cell_offset_t *cells;
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} pattern_t;
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int pattern_count(void);
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const pattern_t *pattern_get(int index);
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/* Fill out_dx/out_dy with normalized rotated offsets. Returns cell count. */
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int pattern_rotated_offsets(int index, int rotation, int *out_dx, int *out_dy);
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/* Bounding box of rotated pattern. */
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void pattern_bounds(int index, int rotation, int *w, int *h);
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#endif
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