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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(void); // 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(void); // 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