49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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 <osgUtil/TransformAttributeFunctor>
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using namespace osgUtil;
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TransformAttributeFunctor::TransformAttributeFunctor(const osg::Matrix& m)
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{
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_m = m;
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_im.invert(_m);
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}
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TransformAttributeFunctor::~TransformAttributeFunctor()
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{
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}
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void TransformAttributeFunctor::apply(osg::Drawable::AttributeType type,unsigned int count,osg::Vec3* begin)
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{
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if (type == osg::Drawable::VERTICES)
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{
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osg::Vec3* end = begin+count;
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for (osg::Vec3* itr=begin;itr<end;++itr)
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{
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(*itr) = (*itr)*_m;
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}
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}
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else if (type == osg::Drawable::NORMALS)
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{
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osg::Vec3* end = begin+count;
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for (osg::Vec3* itr=begin;itr<end;++itr)
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{
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// note post mult by inverse for normals.
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(*itr) = osg::Matrix::transform3x3(_im,(*itr));
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(*itr).normalize();
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}
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}
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}
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