/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield * * This library is open source and may be redistributed and/or modified under * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or * (at your option) any later version. The full license is in LICENSE file * included with this distribution, and on the openscenegraph.org website. * * This library 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 * OpenSceneGraph Public License for more details. */ #ifndef OSG_LOGICOP #define OSG_LOGICOP 1 #include namespace osg { /** Encapsulates OpenGL LogicOp state. */ class OSG_EXPORT LogicOp : public StateAttribute { public : enum Opcode { CLEAR = GL_CLEAR, SET = GL_SET, COPY = GL_COPY, COPY_INVERTED = GL_COPY_INVERTED, NOOP = GL_NOOP, INVERT = GL_INVERT, AND = GL_AND, NAND = GL_NAND, OR = GL_OR, NOR = GL_NOR, XOR = GL_XOR, EQUIV = GL_EQUIV, AND_REVERSE = GL_AND_REVERSE, AND_INVERTED = GL_AND_INVERTED, OR_REVERSE = GL_OR_REVERSE, OR_INVERTED = GL_OR_INVERTED }; LogicOp(); LogicOp(Opcode opcode); /** Copy constructor using CopyOp to manage deep vs shallow copy. */ LogicOp(const LogicOp& trans,const CopyOp& copyop=CopyOp::SHALLOW_COPY): StateAttribute(trans,copyop), _opcode(trans._opcode){} META_StateAttribute(osg, LogicOp,LOGICOP); /** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */ virtual int compare(const StateAttribute& sa) const { // Check for equal types, then create the rhs variable // used by the COMPARE_StateAttribute_Paramter macros below. COMPARE_StateAttribute_Types(LogicOp,sa) // Compare each parameter in turn against the rhs. COMPARE_StateAttribute_Parameter(_opcode) return 0; // Passed all the above comparison macros, so must be equal. } virtual bool getModeUsage(ModeUsage& usage) const { usage.usesMode(GL_COLOR_LOGIC_OP); return true; } inline void setOpcode(Opcode opcode) { _opcode = opcode; } inline Opcode getOpcode() const { return _opcode; } virtual void apply(State& state) const; protected : virtual ~LogicOp(); Opcode _opcode; }; } #endif