e31f682451
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14584 16af8721-9629-0410-8352-f15c8da7e697
100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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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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#include <osg/GLExtensions>
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#include <osg/GL>
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#include <osg/State>
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#include <osg/Point>
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#include <osg/Notify>
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using namespace osg;
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// ARB, EXT and SGIS versions use same values as OpenGL version 1.4.
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#ifndef GL_VERSION_1_4
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# define GL_POINT_SIZE_MIN 0x8126
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# define GL_POINT_SIZE_MAX 0x8127
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# define GL_POINT_FADE_THRESHOLD_SIZE 0x8128
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# define GL_POINT_DISTANCE_ATTENUATION 0x8129
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#endif
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Point::Point()
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{
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_size = 1.0f; // TODO find proper default
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_fadeThresholdSize = 1.0f; // TODO find proper default
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_distanceAttenuation = Vec3(1, 0.0, 0.0); // TODO find proper default
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_minSize = 0.0;
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_maxSize = 100.0;//depends on mulitsampling ... some default necessary
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}
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Point::Point(float size)
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{
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_size = size;
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_fadeThresholdSize = 1.0f; // TODO find proper default
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_distanceAttenuation = Vec3(1, 0.0, 0.0); // TODO find proper default
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_minSize = 0.0;
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_maxSize = 100.0;//depends on mulitsampling ... some default necessary
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}
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Point::~Point()
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{
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}
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void Point::setSize( float size )
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{
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_size = size;
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}
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void Point::setFadeThresholdSize(float fadeThresholdSize)
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{
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_fadeThresholdSize = fadeThresholdSize;
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}
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void Point::setDistanceAttenuation(const Vec3& distanceAttenuation)
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{
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_distanceAttenuation = distanceAttenuation;
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}
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void Point::setMinSize(float minSize)
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{
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_minSize = minSize;
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}
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void Point::setMaxSize(float maxSize)
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{
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_maxSize = maxSize;
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}
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void Point::apply(State& state) const
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{
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#ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
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glPointSize(_size);
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const GL2Extensions* extensions = state.get<GL2Extensions>();
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if (!extensions->isPointParametersSupported)
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return;
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extensions->glPointParameterfv(GL_POINT_DISTANCE_ATTENUATION, (const GLfloat*)&_distanceAttenuation);
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extensions->glPointParameterf(GL_POINT_FADE_THRESHOLD_SIZE, _fadeThresholdSize);
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extensions->glPointParameterf(GL_POINT_SIZE_MIN, _minSize);
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extensions->glPointParameterf(GL_POINT_SIZE_MAX, _maxSize);
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#else
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OSG_NOTICE<<"Warning: Point::apply(State&) - not supported."<<std::endl;
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#endif
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}
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