2006-07-18 23:21:48 +08:00
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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2003-01-22 00:45:36 +08:00
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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2001-10-04 23:12:57 +08:00
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2001-01-11 00:32:10 +08:00
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#ifndef OSG_POINT
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#define OSG_POINT 1
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#include <osg/Vec3>
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2001-09-20 05:08:56 +08:00
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#include <osg/StateAttribute>
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2001-01-11 00:32:10 +08:00
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namespace osg {
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2001-10-01 19:15:55 +08:00
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/** Point - encapsulates the OpenGL point smoothing and size state.*/
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2005-04-12 01:14:17 +08:00
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class OSG_EXPORT Point : public StateAttribute
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{
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public :
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Point();
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2008-03-13 04:15:45 +08:00
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Point(float size);
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2002-01-29 22:04:06 +08:00
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Point(const Point& point,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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StateAttribute(point,copyop),
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Added support for shallow and deep copy of nodes, drawables and state, via a
copy constructor which takes an optional Cloner object, and the old
osg::Object::clone() has changed so that it now requires a Cloner as paramter.
This is passed on to the copy constructor to help control the shallow vs
deep copying. The old functionality of clone() which was clone of type has
been renamed to cloneType().
Updated all of the OSG to work with these new conventions, implemention all
the required copy constructors etc. A couple of areas will do shallow
copies by design, a couple of other still need to be updated to do either
shallow or deep.
Neither of the shallow or deep copy operations have been tested yet, only
the old functionality of the OSG has been checked so far, such running the
viewer on various demo datasets.
Also fixed a problem in osg::Optimize::RemoveRendundentNodesVisitor which
was not checking that Group didn't have have any attached StateSet's, Callbacks
or UserData. These checks have now been added, which fixes a bug which was
revealled by the new osgscribe demo, this related to removal of group acting
as state decorator.
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2002-01-29 05:17:01 +08:00
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_size(point._size),
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_fadeThresholdSize(point._fadeThresholdSize),
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2003-06-24 23:40:09 +08:00
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_distanceAttenuation(point._distanceAttenuation),
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_minSize(point._minSize),
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_maxSize(point._maxSize) {}
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Added support for shallow and deep copy of nodes, drawables and state, via a
copy constructor which takes an optional Cloner object, and the old
osg::Object::clone() has changed so that it now requires a Cloner as paramter.
This is passed on to the copy constructor to help control the shallow vs
deep copying. The old functionality of clone() which was clone of type has
been renamed to cloneType().
Updated all of the OSG to work with these new conventions, implemention all
the required copy constructors etc. A couple of areas will do shallow
copies by design, a couple of other still need to be updated to do either
shallow or deep.
Neither of the shallow or deep copy operations have been tested yet, only
the old functionality of the OSG has been checked so far, such running the
viewer on various demo datasets.
Also fixed a problem in osg::Optimize::RemoveRendundentNodesVisitor which
was not checking that Group didn't have have any attached StateSet's, Callbacks
or UserData. These checks have now been added, which fixes a bug which was
revealled by the new osgscribe demo, this related to removal of group acting
as state decorator.
method
2002-01-29 05:17:01 +08:00
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2002-06-06 21:25:36 +08:00
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META_StateAttribute(osg, Point, POINT);
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2001-09-20 05:08:56 +08:00
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2001-09-22 10:42:08 +08:00
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
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virtual int compare(const StateAttribute& sa) const
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{
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// check the types are equal and then create the rhs variable
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2004-09-03 03:10:33 +08:00
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// used by the COMPARE_StateAttribute_Parameter macros below.
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2001-09-22 10:42:08 +08:00
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COMPARE_StateAttribute_Types(Point,sa)
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2004-09-03 03:10:33 +08:00
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// compare each parameter in turn against the rhs.
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2001-09-22 10:42:08 +08:00
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COMPARE_StateAttribute_Parameter(_size)
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COMPARE_StateAttribute_Parameter(_fadeThresholdSize)
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COMPARE_StateAttribute_Parameter(_distanceAttenuation)
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2003-06-24 23:40:09 +08:00
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COMPARE_StateAttribute_Parameter(_minSize)
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COMPARE_StateAttribute_Parameter(_maxSize)
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2001-09-22 10:42:08 +08:00
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return 0; // passed all the above comparison macro's, must be equal.
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}
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2007-03-06 01:34:36 +08:00
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virtual bool getModeUsage(StateAttribute::ModeUsage& usage) const
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{
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2004-03-03 23:38:22 +08:00
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usage.usesMode(GL_POINT_SMOOTH);
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return true;
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2001-09-20 05:08:56 +08:00
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}
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2002-09-02 20:31:35 +08:00
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void setSize(float size);
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inline float getSize() const { return _size; }
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2001-01-11 00:32:10 +08:00
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2002-09-02 20:31:35 +08:00
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void setFadeThresholdSize(float fadeThresholdSize);
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inline float getFadeThresholdSize() const { return _fadeThresholdSize; }
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2001-01-11 00:32:10 +08:00
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2001-09-20 05:08:56 +08:00
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void setDistanceAttenuation(const Vec3& distanceAttenuation);
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inline const Vec3& getDistanceAttenuation() const { return _distanceAttenuation; }
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2003-06-24 23:40:09 +08:00
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void setMinSize(float minSize);
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inline float getMinSize() const {return _minSize;}
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void setMaxSize(float maxSize);
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inline float getMaxSize() const {return _maxSize;}
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2001-09-20 05:08:56 +08:00
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virtual void apply(State& state) const;
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2001-01-11 00:32:10 +08:00
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2005-04-20 20:32:43 +08:00
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/** Encapsulates queries of extension availability, obtains extension
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2007-12-11 01:30:18 +08:00
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* function pointers, and provides convenience wrappers for
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2005-04-20 20:32:43 +08:00
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* calling extension functions. */
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class OSG_EXPORT Extensions : public osg::Referenced
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{
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public:
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2005-04-26 21:15:27 +08:00
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Extensions(unsigned int contextID);
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2005-04-20 20:32:43 +08:00
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Extensions(const Extensions& rhs);
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void lowestCommonDenominator(const Extensions& rhs);
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2007-06-28 04:36:16 +08:00
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void setupGLExtensions(unsigned int contextID);
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2005-04-20 20:32:43 +08:00
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void setPointParametersSupported(bool flag) { _isPointParametersSupported=flag; }
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bool isPointParametersSupported() const { return _isPointParametersSupported; }
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2007-06-30 01:01:37 +08:00
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void setPointSpriteCoordOriginSupported(bool flag) { _isPointSpriteCoordOriginSupported=flag; }
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bool isPointSpriteCoordOriginSupported() const { return _isPointSpriteCoordOriginSupported; }
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2006-11-14 20:29:54 +08:00
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void glPointParameteri(GLenum pname, GLint param) const;
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void glPointParameterf(GLenum pname, GLfloat param) const;
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void glPointParameterfv(GLenum pname, const GLfloat *params) const;
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protected:
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~Extensions() {}
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2007-06-30 01:01:37 +08:00
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bool _isPointParametersSupported;
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bool _isPointSpriteCoordOriginSupported;
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2005-04-20 20:32:43 +08:00
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2007-09-10 23:19:23 +08:00
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typedef void (APIENTRY * GLPointParameteriProc) (GLenum pname, GLint param);
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typedef void (APIENTRY * GLPointParameterfProc) (GLenum pname, GLfloat param);
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typedef void (APIENTRY * GLPointParameterfvProc) (GLenum pname, const GLfloat *params);
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GLPointParameteriProc _glPointParameteri;
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GLPointParameterfProc _glPointParameterf;
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GLPointParameterfvProc _glPointParameterfv;
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2005-04-20 20:32:43 +08:00
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};
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/** Returns the Extensions object for the given context.
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2007-12-11 01:30:18 +08:00
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* If createIfNotInitalized is true and the Extensions object doesn't
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2005-04-20 20:32:43 +08:00
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* exist, getExtensions() creates it on the given context.
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* Returns NULL if createIfNotInitalized is false and the Extensions
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* object doesn't exist. */
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static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
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/** setExtensions() allows users to override the extensions across graphics contexts.
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* Typically used when you have different extensions supported across graphics pipes,
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* but need to ensure that they all use the same low common denominator extensions. */
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static void setExtensions(unsigned int contextID,Extensions* extensions);
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2001-01-11 00:32:10 +08:00
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protected :
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virtual ~Point();
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float _size;
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float _fadeThresholdSize;
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Vec3 _distanceAttenuation;
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2003-06-24 23:40:09 +08:00
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float _minSize;
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float _maxSize;
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2001-01-11 00:32:10 +08:00
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};
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2002-02-03 20:33:41 +08:00
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}
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2001-01-11 00:32:10 +08:00
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#endif
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