hello world

neo/tools/guied/GEModifierStack.h

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+/*
+===========================================================================
+
+Doom 3 GPL Source Code
+Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 
+
+This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  
+
+Doom 3 Source Code 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.
+
+Doom 3 Source Code 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 Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
+
+===========================================================================
+*/
+#ifndef GEMODIFIERSTACK_H_
+#define GEMODIFIERSTACK_H_
+
+#ifndef GEMODIFIER_H_
+#include "GEModifier.h"
+#endif
+
+class rvGEModifierStack
+{
+public:
+
+	rvGEModifierStack ( );
+	~rvGEModifierStack ( );
+
+	void			BlockNextMerge	( void );
+
+	bool			Append			( rvGEModifier* modifier );
+	bool			Undo			( void );
+	bool			Redo			( void );
+	
+	void			Reset			( void );
+	
+	bool			CanUndo			( void );
+	bool			CanRedo			( void );
+	
+	rvGEModifier*	GetUndoModifier	( void );
+	rvGEModifier*	GetRedoModifier	( void );
+		
+protected:
+
+	idList<rvGEModifier*>	mModifiers;
+	int						mCurrentModifier;
+	bool					mMergeBlock;
+};
+
+ID_INLINE bool rvGEModifierStack::CanRedo ( void )
+{
+	return mCurrentModifier < mModifiers.Num()-1;
+}
+
+ID_INLINE bool rvGEModifierStack::CanUndo ( void )
+{
+	return mCurrentModifier >= 0;
+}
+
+ID_INLINE void rvGEModifierStack::BlockNextMerge ( void )
+{
+	mMergeBlock = true;
+}
+
+ID_INLINE rvGEModifier* rvGEModifierStack::GetUndoModifier ( void )
+{
+	assert ( CanUndo ( ) );
+	return mModifiers[mCurrentModifier];
+}
+
+ID_INLINE rvGEModifier* rvGEModifierStack::GetRedoModifier ( void )
+{
+	assert ( CanRedo ( ) );
+	return mModifiers[mCurrentModifier+1];
+}
+
+#endif