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engines/tinsel/cliprect.h

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ * 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 UpdateClipRectSingle(		// Redraws single object within this clipping rectangle
+	OBJECT *pObj,	// object to draw
+	Common::Point *pWin,		// window top left position
+	Common::Rect *pClip);		// pointer to clip rectangle
+
+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