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/*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef BBOX_H_INCL__
#define BBOX_H_INCL__
#include "libs/gfxlib.h"
#include "libs/graphics/tfb_draw.h"
/* Bounding Box operations. These operations are NOT synchronized.
* However, they should only be accessed by TFB_FlushGraphics and
* TFB_SwapBuffers, or the routines that they exclusively call -- all
* of which are only callable by the thread that is permitted to touch
* the screen. No explicit locks should therefore be required. */
typedef struct {
int valid; // If zero, the next point registered becomes the region
RECT region; // The actual modified rectangle
RECT clip; // Points outside of this rectangle are pushed to
// the closest border point
} TFB_BoundingBox;
extern TFB_BoundingBox TFB_BBox;
void TFB_BBox_RegisterPoint (int x, int y);
void TFB_BBox_RegisterRect (const RECT *r);
void TFB_BBox_RegisterCanvas (TFB_Canvas c, int x, int y);
void TFB_BBox_Init (int width, int height);
void TFB_BBox_Reset (void);
void TFB_BBox_SetClipRect (const RECT *r);
#endif /* BBOX_H_INCL__ */
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