1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 * Clipping rectangle defines 22 */ 23 24 #ifndef TINSEL_CLIPRECT_H // prevent multiple includes 25 #define TINSEL_CLIPRECT_H 26 27 #include "common/list.h" 28 #include "common/rect.h" 29 30 namespace Tinsel { 31 32 struct OBJECT; 33 34 typedef Common::List<Common::Rect> RectList; 35 36 /*----------------------------------------------------------------------*\ 37 |* Clip Rect Function Prototypes *| 38 \*----------------------------------------------------------------------*/ 39 40 void ResetClipRect(); // Resets the clipping rectangle allocator 41 42 void AddClipRect( // Allocate a clipping rectangle from the free list 43 const Common::Rect &pClip); // clip rectangle dimensions to allocate 44 45 const RectList &GetClipRects(); 46 47 bool IntersectRectangle( // Creates the intersection of two rectangles 48 Common::Rect &pDest, // pointer to destination rectangle that is to receive the intersection 49 const Common::Rect &pSrc1, // pointer to a source rectangle 50 const Common::Rect &pSrc2); // pointer to a source rectangle 51 52 bool UnionRectangle( // Creates the union of two rectangles 53 Common::Rect &pDest, // destination rectangle that is to receive the new union 54 const Common::Rect &pSrc1, // a source rectangle 55 const Common::Rect &pSrc2); // a source rectangle 56 57 void FindMovingObjects( // Creates clipping rectangles for all the objects that have moved on the specified object list 58 OBJECT **pObjList, // playfield display list to draw 59 Common::Point *pWin, // playfield window top left position 60 Common::Rect *pClip, // playfield clipping rectangle 61 bool bVelocity, // when set, objects pos is updated with velocity 62 bool bScrolled); // when set, playfield has scrolled 63 64 void MergeClipRect(); // Merges any clipping rectangles that overlap 65 66 void UpdateClipRect( // Redraws all objects within this clipping rectangle 67 OBJECT **pObjList, // object list to draw 68 Common::Point *pWin, // window top left position 69 Common::Rect *pClip); // pointer to clip rectangle 70 71 } // End of namespace Tinsel 72 73 #endif // TINSEL_CLIPRECT_H 74