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42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/*
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------------------------------------------------------------
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Fixed Rate Pig - a fixed logic frame rate demo
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------------------------------------------------------------
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* Copyright (C) 2004 David Olofson <david@olofson.net>
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*
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* This software is released under the terms of the GPL.
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*
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* Contact author for permission if you want to use this
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* software, or work derived from it, under other terms.
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*/
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#ifndef PIG_DIRTY_H
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#define PIG_DIRTY_H
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/* A table of dirtyrects for one display page */
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typedef struct PIG_dirtytable
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{
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int size; /* Table size */
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SDL_Rect *rects; /* Table of rects */
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int count; /* # of rects currently used */
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int best; /* Merge testing starts here! */
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} PIG_dirtytable;
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PIG_dirtytable *pig_dirty_open(int size);
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void pig_dirty_close(PIG_dirtytable *pdt);
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/* Add rectangle 'dr' to table 'pdt' */
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void pig_dirty_add(PIG_dirtytable *pdt, SDL_Rect *dr);
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/* Merge table 'from' into 'pdt' */
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void pig_dirty_merge(PIG_dirtytable *pdt, PIG_dirtytable *from);
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/* Extend 'to' to a new rect that includes both 'from' and 'to' */
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void pig_mergerect(SDL_Rect *from, SDL_Rect *to);
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/* Clip 'to' into a rect that is the intersection of 'from' and 'to' */
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void pig_intersectrect(SDL_Rect *from, SDL_Rect *to);
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#endif /* PIG_DIRTY_H */
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