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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
* Clipping rectangle defines
*/
#ifndef TINSEL_CLIPRECT_H // prevent multiple includes
#define TINSEL_CLIPRECT_H
#include "common/list.h"
#include "common/rect.h"
namespace Tinsel {
struct OBJECT;
typedef Common::List<Common::Rect> RectList;
/*----------------------------------------------------------------------*\
|* Clip Rect Function Prototypes *|
\*----------------------------------------------------------------------*/
void ResetClipRect(); // Resets the clipping rectangle allocator
void AddClipRect( // Allocate a clipping rectangle from the free list
const Common::Rect &pClip); // clip rectangle dimensions to allocate
const RectList &GetClipRects();
bool IntersectRectangle( // Creates the intersection of two rectangles
Common::Rect &pDest, // pointer to destination rectangle that is to receive the intersection
const Common::Rect &pSrc1, // pointer to a source rectangle
const Common::Rect &pSrc2); // pointer to a source rectangle
bool UnionRectangle( // Creates the union of two rectangles
Common::Rect &pDest, // destination rectangle that is to receive the new union
const Common::Rect &pSrc1, // a source rectangle
const Common::Rect &pSrc2); // a source rectangle
void FindMovingObjects( // Creates clipping rectangles for all the objects that have moved on the specified object list
OBJECT *pObjList, // playfield display list to draw
Common::Point *pWin, // playfield window top left position
Common::Rect *pClip, // playfield clipping rectangle
bool bVelocity, // when set, objects pos is updated with velocity
bool bScrolled); // when set, playfield has scrolled
void MergeClipRect(); // Merges any clipping rectangles that overlap
void UpdateClipRect( // Redraws all objects within this clipping rectangle
OBJECT *pObjList, // object list to draw
Common::Point *pWin, // window top left position
Common::Rect *pClip); // pointer to clip rectangle
} // End of namespace Tinsel
#endif // TINSEL_CLIPRECT_H
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