fa84f280f6
Refactored the transfer function set up in RayTracedTechnique to prepare for new scale and offset uniforms. Updated wrappers
1529 lines
54 KiB
C++
1529 lines
54 KiB
C++
/* OpenSceneGraph example, osgvolume.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osg/Node>
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#include <osg/Geometry>
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#include <osg/Notify>
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#include <osg/Texture3D>
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#include <osg/Texture1D>
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#include <osg/ImageSequence>
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#include <osg/TexGen>
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#include <osg/Geode>
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#include <osg/Billboard>
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#include <osg/PositionAttitudeTransform>
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#include <osg/ClipNode>
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#include <osg/AlphaFunc>
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#include <osg/TexGenNode>
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#include <osg/TexEnv>
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#include <osg/TexEnvCombine>
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#include <osg/Material>
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#include <osg/PrimitiveSet>
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#include <osg/Endian>
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#include <osg/BlendFunc>
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#include <osg/BlendEquation>
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#include <osg/TransferFunction>
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#include <osg/MatrixTransform>
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#include <osgDB/Registry>
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#include <osgDB/ReadFile>
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#include <osgDB/WriteFile>
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#include <osgDB/FileUtils>
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#include <osgDB/FileNameUtils>
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#include <osgGA/EventVisitor>
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#include <osgGA/TrackballManipulator>
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#include <osgGA/FlightManipulator>
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#include <osgGA/KeySwitchMatrixManipulator>
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#include <osgUtil/CullVisitor>
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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#include <osgManipulator/TabBoxDragger>
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#include <osgManipulator/TabPlaneTrackballDragger>
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#include <osgManipulator/TrackballDragger>
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#include <osg/io_utils>
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#include <algorithm>
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#include <iostream>
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#include <osg/ImageUtils>
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#include <osgVolume/Volume>
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#include <osgVolume/VolumeTile>
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#include <osgVolume/RayTracedTechnique>
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#include <osgVolume/FixedFunctionTechnique>
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typedef std::vector< osg::ref_ptr<osg::Image> > ImageList;
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enum ShadingModel
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{
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Standard,
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Light,
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Isosurface,
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MaximumIntensityProjection
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};
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struct PassThroughTransformFunction
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{
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unsigned char operator() (unsigned char c) const { return c; }
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};
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struct ProcessRow
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{
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virtual ~ProcessRow() {}
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virtual void operator() (unsigned int num,
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GLenum source_pixelFormat, unsigned char* source,
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GLenum dest_pixelFormat, unsigned char* dest) const
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{
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switch(source_pixelFormat)
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{
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case(GL_LUMINANCE):
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case(GL_ALPHA):
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switch(dest_pixelFormat)
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{
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case(GL_LUMINANCE):
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case(GL_ALPHA): A_to_A(num, source, dest); break;
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case(GL_LUMINANCE_ALPHA): A_to_LA(num, source, dest); break;
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case(GL_RGB): A_to_RGB(num, source, dest); break;
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case(GL_RGBA): A_to_RGBA(num, source, dest); break;
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}
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break;
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case(GL_LUMINANCE_ALPHA):
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switch(dest_pixelFormat)
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{
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case(GL_LUMINANCE):
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case(GL_ALPHA): LA_to_A(num, source, dest); break;
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case(GL_LUMINANCE_ALPHA): LA_to_LA(num, source, dest); break;
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case(GL_RGB): LA_to_RGB(num, source, dest); break;
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case(GL_RGBA): LA_to_RGBA(num, source, dest); break;
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}
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break;
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case(GL_RGB):
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switch(dest_pixelFormat)
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{
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case(GL_LUMINANCE):
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case(GL_ALPHA): RGB_to_A(num, source, dest); break;
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case(GL_LUMINANCE_ALPHA): RGB_to_LA(num, source, dest); break;
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case(GL_RGB): RGB_to_RGB(num, source, dest); break;
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case(GL_RGBA): RGB_to_RGBA(num, source, dest); break;
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}
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break;
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case(GL_RGBA):
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switch(dest_pixelFormat)
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{
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case(GL_LUMINANCE):
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case(GL_ALPHA): RGBA_to_A(num, source, dest); break;
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case(GL_LUMINANCE_ALPHA): RGBA_to_LA(num, source, dest); break;
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case(GL_RGB): RGBA_to_RGB(num, source, dest); break;
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case(GL_RGBA): RGBA_to_RGBA(num, source, dest); break;
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}
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break;
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// alpha sources..
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virtual void A_to_A(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source++;
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}
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}
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virtual void A_to_LA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source;
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*dest++ = *source++;
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}
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}
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virtual void A_to_RGB(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source;
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*dest++ = *source;
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*dest++ = *source++;
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}
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}
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virtual void A_to_RGBA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source;
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*dest++ = *source;
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*dest++ = *source;
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*dest++ = *source++;
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// alpha luminance sources..
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virtual void LA_to_A(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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++source;
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*dest++ = *source++;
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}
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}
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virtual void LA_to_LA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source++;
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*dest++ = *source++;
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}
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}
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virtual void LA_to_RGB(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source;
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*dest++ = *source;
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*dest++ = *source;
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source+=2;
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}
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}
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virtual void LA_to_RGBA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source;
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*dest++ = *source;
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*dest++ = *source++;
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*dest++ = *source++;
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// RGB sources..
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virtual void RGB_to_A(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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unsigned char val = *source;
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*dest++ = val;
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source += 3;
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}
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}
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virtual void RGB_to_LA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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unsigned char val = *source;
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*dest++ = val;
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*dest++ = val;
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source += 3;
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}
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}
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virtual void RGB_to_RGB(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source++;
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*dest++ = *source++;
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*dest++ = *source++;
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}
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}
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virtual void RGB_to_RGBA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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unsigned char val = *source;
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*dest++ = *source++;
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*dest++ = *source++;
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*dest++ = *source++;
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*dest++ = val;
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// RGBA sources..
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virtual void RGBA_to_A(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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source += 3;
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*dest++ = *source++;
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}
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}
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virtual void RGBA_to_LA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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unsigned char val = *source;
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source += 3;
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*dest++ = val;
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*dest++ = *source++;
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}
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}
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virtual void RGBA_to_RGB(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source++;
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*dest++ = *source++;
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*dest++ = *source++;
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++source;
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}
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}
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virtual void RGBA_to_RGBA(unsigned int num, unsigned char* source, unsigned char* dest) const
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{
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for(unsigned int i=0;i<num;++i)
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{
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*dest++ = *source++;
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*dest++ = *source++;
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*dest++ = *source++;
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*dest++ = *source++;
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}
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}
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};
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void clampToNearestValidPowerOfTwo(int& sizeX, int& sizeY, int& sizeZ, int s_maximumTextureSize, int t_maximumTextureSize, int r_maximumTextureSize)
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{
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// compute nearest powers of two for each axis.
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int s_nearestPowerOfTwo = 1;
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while(s_nearestPowerOfTwo<sizeX && s_nearestPowerOfTwo<s_maximumTextureSize) s_nearestPowerOfTwo*=2;
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int t_nearestPowerOfTwo = 1;
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while(t_nearestPowerOfTwo<sizeY && t_nearestPowerOfTwo<t_maximumTextureSize) t_nearestPowerOfTwo*=2;
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int r_nearestPowerOfTwo = 1;
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while(r_nearestPowerOfTwo<sizeZ && r_nearestPowerOfTwo<r_maximumTextureSize) r_nearestPowerOfTwo*=2;
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sizeX = s_nearestPowerOfTwo;
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sizeY = t_nearestPowerOfTwo;
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sizeZ = r_nearestPowerOfTwo;
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}
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osg::Image* createTexture3D(ImageList& imageList, ProcessRow& processRow,
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unsigned int numComponentsDesired,
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int s_maximumTextureSize,
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int t_maximumTextureSize,
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int r_maximumTextureSize,
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bool resizeToPowerOfTwo)
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{
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int max_s = 0;
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int max_t = 0;
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unsigned int max_components = 0;
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int total_r = 0;
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ImageList::iterator itr;
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for(itr=imageList.begin();
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itr!=imageList.end();
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++itr)
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{
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osg::Image* image = itr->get();
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GLenum pixelFormat = image->getPixelFormat();
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if (pixelFormat==GL_ALPHA ||
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pixelFormat==GL_INTENSITY ||
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pixelFormat==GL_LUMINANCE ||
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pixelFormat==GL_LUMINANCE_ALPHA ||
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pixelFormat==GL_RGB ||
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pixelFormat==GL_RGBA)
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{
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max_s = osg::maximum(image->s(), max_s);
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max_t = osg::maximum(image->t(), max_t);
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max_components = osg::maximum(osg::Image::computeNumComponents(pixelFormat), max_components);
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total_r += image->r();
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}
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else
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{
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osg::notify(osg::NOTICE)<<"Image "<<image->getFileName()<<" has unsuitable pixel format"<< std::hex<< pixelFormat << std::dec << std::endl;
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}
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}
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if (numComponentsDesired!=0) max_components = numComponentsDesired;
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GLenum desiredPixelFormat = 0;
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switch(max_components)
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{
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case(1):
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osg::notify(osg::NOTICE)<<"desiredPixelFormat = GL_LUMINANCE" << std::endl;
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desiredPixelFormat = GL_LUMINANCE;
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break;
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case(2):
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osg::notify(osg::NOTICE)<<"desiredPixelFormat = GL_LUMINANCE_ALPHA" << std::endl;
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desiredPixelFormat = GL_LUMINANCE_ALPHA;
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break;
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case(3):
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osg::notify(osg::NOTICE)<<"desiredPixelFormat = GL_RGB" << std::endl;
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desiredPixelFormat = GL_RGB;
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break;
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case(4):
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osg::notify(osg::NOTICE)<<"desiredPixelFormat = GL_RGBA" << std::endl;
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desiredPixelFormat = GL_RGBA;
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break;
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}
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if (desiredPixelFormat==0) return 0;
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// compute nearest powers of two for each axis.
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int s_nearestPowerOfTwo = 1;
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int t_nearestPowerOfTwo = 1;
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int r_nearestPowerOfTwo = 1;
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if (resizeToPowerOfTwo)
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{
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while(s_nearestPowerOfTwo<max_s && s_nearestPowerOfTwo<s_maximumTextureSize) s_nearestPowerOfTwo*=2;
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while(t_nearestPowerOfTwo<max_t && t_nearestPowerOfTwo<t_maximumTextureSize) t_nearestPowerOfTwo*=2;
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while(r_nearestPowerOfTwo<total_r && r_nearestPowerOfTwo<r_maximumTextureSize) r_nearestPowerOfTwo*=2;
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osg::notify(osg::NOTICE)<<"max image width = "<<max_s<<" nearest power of two = "<<s_nearestPowerOfTwo<<std::endl;
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osg::notify(osg::NOTICE)<<"max image height = "<<max_t<<" nearest power of two = "<<t_nearestPowerOfTwo<<std::endl;
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osg::notify(osg::NOTICE)<<"max image depth = "<<total_r<<" nearest power of two = "<<r_nearestPowerOfTwo<<std::endl;
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}
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else
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{
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s_nearestPowerOfTwo = max_s;
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t_nearestPowerOfTwo = max_t;
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r_nearestPowerOfTwo = total_r;
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}
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// now allocate the 3d texture;
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osg::ref_ptr<osg::Image> image_3d = new osg::Image;
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image_3d->allocateImage(s_nearestPowerOfTwo,t_nearestPowerOfTwo,r_nearestPowerOfTwo,
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desiredPixelFormat,GL_UNSIGNED_BYTE);
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unsigned int r_offset = (total_r<r_nearestPowerOfTwo) ? r_nearestPowerOfTwo/2 - total_r/2 : 0;
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int curr_dest_r = r_offset;
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// copy across the values from the source images into the image_3d.
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for(itr=imageList.begin();
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itr!=imageList.end();
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++itr)
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{
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osg::Image* image = itr->get();
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GLenum pixelFormat = image->getPixelFormat();
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if (pixelFormat==GL_ALPHA ||
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pixelFormat==GL_LUMINANCE ||
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pixelFormat==GL_INTENSITY ||
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pixelFormat==GL_LUMINANCE_ALPHA ||
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pixelFormat==GL_RGB ||
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pixelFormat==GL_RGBA)
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{
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int num_r = osg::minimum(image->r(), (image_3d->r() - curr_dest_r));
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int num_t = osg::minimum(image->t(), image_3d->t());
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int num_s = osg::minimum(image->s(), image_3d->s());
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unsigned int s_offset_dest = (image->s()<s_nearestPowerOfTwo) ? s_nearestPowerOfTwo/2 - image->s()/2 : 0;
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unsigned int t_offset_dest = (image->t()<t_nearestPowerOfTwo) ? t_nearestPowerOfTwo/2 - image->t()/2 : 0;
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for(int r=0;r<num_r;++r, ++curr_dest_r)
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{
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for(int t=0;t<num_t;++t)
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{
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unsigned char* dest = image_3d->data(s_offset_dest,t+t_offset_dest,curr_dest_r);
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unsigned char* source = image->data(0,t,r);
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processRow(num_s, image->getPixelFormat(), source, image_3d->getPixelFormat(), dest);
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}
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}
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}
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}
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return image_3d.release();
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}
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struct ScaleOperator
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{
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ScaleOperator():_scale(1.0f) {}
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ScaleOperator(float scale):_scale(scale) {}
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ScaleOperator(const ScaleOperator& so):_scale(so._scale) {}
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ScaleOperator& operator = (const ScaleOperator& so) { _scale = so._scale; return *this; }
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float _scale;
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inline void luminance(float& l) const { l*= _scale; }
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inline void alpha(float& a) const { a*= _scale; }
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inline void luminance_alpha(float& l,float& a) const { l*= _scale; a*= _scale; }
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inline void rgb(float& r,float& g,float& b) const { r*= _scale; g*=_scale; b*=_scale; }
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inline void rgba(float& r,float& g,float& b,float& a) const { r*= _scale; g*=_scale; b*=_scale; a*=_scale; }
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};
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struct RecordRowOperator
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{
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RecordRowOperator(unsigned int num):_colours(num),_pos(0) {}
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mutable std::vector<osg::Vec4> _colours;
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mutable unsigned int _pos;
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inline void luminance(float l) const { rgba(l,l,l,1.0f); }
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inline void alpha(float a) const { rgba(1.0f,1.0f,1.0f,a); }
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inline void luminance_alpha(float l,float a) const { rgba(l,l,l,a); }
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inline void rgb(float r,float g,float b) const { rgba(r,g,b,1.0f); }
|
|
inline void rgba(float r,float g,float b,float a) const { _colours[_pos++].set(r,g,b,a); }
|
|
};
|
|
|
|
struct WriteRowOperator
|
|
{
|
|
WriteRowOperator():_pos(0) {}
|
|
WriteRowOperator(unsigned int num):_colours(num),_pos(0) {}
|
|
|
|
std::vector<osg::Vec4> _colours;
|
|
mutable unsigned int _pos;
|
|
|
|
inline void luminance(float& l) const { l = _colours[_pos++].r(); }
|
|
inline void alpha(float& a) const { a = _colours[_pos++].a(); }
|
|
inline void luminance_alpha(float& l,float& a) const { l = _colours[_pos].r(); a = _colours[_pos++].a(); }
|
|
inline void rgb(float& r,float& g,float& b) const { r = _colours[_pos].r(); g = _colours[_pos].g(); b = _colours[_pos].b(); }
|
|
inline void rgba(float& r,float& g,float& b,float& a) const { r = _colours[_pos].r(); g = _colours[_pos].g(); b = _colours[_pos].b(); a = _colours[_pos++].a(); }
|
|
};
|
|
|
|
osg::Image* readRaw(int sizeX, int sizeY, int sizeZ, int numberBytesPerComponent, int numberOfComponents, const std::string& endian, const std::string& raw_filename)
|
|
{
|
|
osgDB::ifstream fin(raw_filename.c_str(), std::ifstream::binary);
|
|
if (!fin) return 0;
|
|
|
|
GLenum pixelFormat;
|
|
switch(numberOfComponents)
|
|
{
|
|
case 1 : pixelFormat = GL_LUMINANCE; break;
|
|
case 2 : pixelFormat = GL_LUMINANCE_ALPHA; break;
|
|
case 3 : pixelFormat = GL_RGB; break;
|
|
case 4 : pixelFormat = GL_RGBA; break;
|
|
default :
|
|
osg::notify(osg::NOTICE)<<"Error: numberOfComponents="<<numberOfComponents<<" not supported, only 1,2,3 or 4 are supported."<<std::endl;
|
|
return 0;
|
|
}
|
|
|
|
|
|
GLenum dataType;
|
|
switch(numberBytesPerComponent)
|
|
{
|
|
case 1 : dataType = GL_UNSIGNED_BYTE; break;
|
|
case 2 : dataType = GL_UNSIGNED_SHORT; break;
|
|
case 4 : dataType = GL_UNSIGNED_INT; break;
|
|
default :
|
|
osg::notify(osg::NOTICE)<<"Error: numberBytesPerComponent="<<numberBytesPerComponent<<" not supported, only 1,2 or 4 are supported."<<std::endl;
|
|
return 0;
|
|
}
|
|
|
|
int s_maximumTextureSize=256, t_maximumTextureSize=256, r_maximumTextureSize=256;
|
|
|
|
int sizeS = sizeX;
|
|
int sizeT = sizeY;
|
|
int sizeR = sizeZ;
|
|
clampToNearestValidPowerOfTwo(sizeS, sizeT, sizeR, s_maximumTextureSize, t_maximumTextureSize, r_maximumTextureSize);
|
|
|
|
osg::ref_ptr<osg::Image> image = new osg::Image;
|
|
image->allocateImage(sizeS, sizeT, sizeR, pixelFormat, dataType);
|
|
|
|
|
|
bool endianSwap = (osg::getCpuByteOrder()==osg::BigEndian) ? (endian!="big") : (endian=="big");
|
|
|
|
unsigned int r_offset = (sizeZ<sizeR) ? sizeR/2 - sizeZ/2 : 0;
|
|
|
|
int offset = endianSwap ? numberBytesPerComponent : 0;
|
|
int delta = endianSwap ? -1 : 1;
|
|
for(int r=0;r<sizeZ;++r)
|
|
{
|
|
for(int t=0;t<sizeY;++t)
|
|
{
|
|
char* data = (char*) image->data(0,t,r+r_offset);
|
|
for(int s=0;s<sizeX;++s)
|
|
{
|
|
if (!fin) return 0;
|
|
|
|
for(int c=0;c<numberOfComponents;++c)
|
|
{
|
|
char* ptr = data+offset;
|
|
for(int b=0;b<numberBytesPerComponent;++b)
|
|
{
|
|
fin.read((char*)ptr, 1);
|
|
ptr += delta;
|
|
}
|
|
data += numberBytesPerComponent;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// normalise texture
|
|
{
|
|
// compute range of values
|
|
osg::Vec4 minValue, maxValue;
|
|
osg::computeMinMax(image.get(), minValue, maxValue);
|
|
osg::modifyImage(image.get(),ScaleOperator(1.0f/maxValue.r()));
|
|
}
|
|
|
|
|
|
fin.close();
|
|
|
|
if (dataType!=GL_UNSIGNED_BYTE)
|
|
{
|
|
// need to convert to ubyte
|
|
|
|
osg::ref_ptr<osg::Image> new_image = new osg::Image;
|
|
new_image->allocateImage(sizeS, sizeT, sizeR, pixelFormat, GL_UNSIGNED_BYTE);
|
|
|
|
RecordRowOperator readOp(sizeS);
|
|
WriteRowOperator writeOp;
|
|
|
|
for(int r=0;r<sizeR;++r)
|
|
{
|
|
for(int t=0;t<sizeT;++t)
|
|
{
|
|
// reset the indices to beginning
|
|
readOp._pos = 0;
|
|
writeOp._pos = 0;
|
|
|
|
// read the pixels into readOp's _colour array
|
|
osg::readRow(sizeS, pixelFormat, dataType, image->data(0,t,r), readOp);
|
|
|
|
// pass readOp's _colour array contents over to writeOp (note this is just a pointer swap).
|
|
writeOp._colours.swap(readOp._colours);
|
|
|
|
osg::modifyRow(sizeS, pixelFormat, GL_UNSIGNED_BYTE, new_image->data(0,t,r), writeOp);
|
|
|
|
// return readOp's _colour array contents back to its rightful owner.
|
|
writeOp._colours.swap(readOp._colours);
|
|
}
|
|
}
|
|
|
|
image = new_image;
|
|
}
|
|
|
|
return image.release();
|
|
|
|
|
|
}
|
|
|
|
enum ColourSpaceOperation
|
|
{
|
|
NO_COLOUR_SPACE_OPERATION,
|
|
MODULATE_ALPHA_BY_LUMINANCE,
|
|
MODULATE_ALPHA_BY_COLOUR,
|
|
REPLACE_ALPHA_WITH_LUMINANCE,
|
|
REPLACE_RGB_WITH_LUMINANCE
|
|
};
|
|
|
|
struct ModulateAlphaByLuminanceOperator
|
|
{
|
|
ModulateAlphaByLuminanceOperator() {}
|
|
|
|
inline void luminance(float&) const {}
|
|
inline void alpha(float&) const {}
|
|
inline void luminance_alpha(float& l,float& a) const { a*= l; }
|
|
inline void rgb(float&,float&,float&) const {}
|
|
inline void rgba(float& r,float& g,float& b,float& a) const { float l = (r+g+b)*0.3333333; a *= l;}
|
|
};
|
|
|
|
struct ModulateAlphaByColourOperator
|
|
{
|
|
ModulateAlphaByColourOperator(const osg::Vec4& colour):_colour(colour) { _lum = _colour.length(); }
|
|
|
|
osg::Vec4 _colour;
|
|
float _lum;
|
|
|
|
inline void luminance(float&) const {}
|
|
inline void alpha(float&) const {}
|
|
inline void luminance_alpha(float& l,float& a) const { a*= l*_lum; }
|
|
inline void rgb(float&,float&,float&) const {}
|
|
inline void rgba(float& r,float& g,float& b,float& a) const { a = (r*_colour.r()+g*_colour.g()+b*_colour.b()+a*_colour.a()); }
|
|
};
|
|
|
|
struct ReplaceAlphaWithLuminanceOperator
|
|
{
|
|
ReplaceAlphaWithLuminanceOperator() {}
|
|
|
|
inline void luminance(float&) const {}
|
|
inline void alpha(float&) const {}
|
|
inline void luminance_alpha(float& l,float& a) const { a= l; }
|
|
inline void rgb(float&,float&,float&) const { }
|
|
inline void rgba(float& r,float& g,float& b,float& a) const { float l = (r+g+b)*0.3333333; a = l; }
|
|
};
|
|
|
|
osg::Image* doColourSpaceConversion(ColourSpaceOperation op, osg::Image* image, osg::Vec4& colour)
|
|
{
|
|
switch(op)
|
|
{
|
|
case (MODULATE_ALPHA_BY_LUMINANCE):
|
|
{
|
|
std::cout<<"doing conversion MODULATE_ALPHA_BY_LUMINANCE"<<std::endl;
|
|
osg::modifyImage(image,ModulateAlphaByLuminanceOperator());
|
|
return image;
|
|
}
|
|
case (MODULATE_ALPHA_BY_COLOUR):
|
|
{
|
|
std::cout<<"doing conversion MODULATE_ALPHA_BY_COLOUR"<<std::endl;
|
|
osg::modifyImage(image,ModulateAlphaByColourOperator(colour));
|
|
return image;
|
|
}
|
|
case (REPLACE_ALPHA_WITH_LUMINANCE):
|
|
{
|
|
std::cout<<"doing conversion REPLACE_ALPHA_WITH_LUMINANCE"<<std::endl;
|
|
osg::modifyImage(image,ReplaceAlphaWithLuminanceOperator());
|
|
return image;
|
|
}
|
|
case (REPLACE_RGB_WITH_LUMINANCE):
|
|
{
|
|
std::cout<<"doing conversion REPLACE_ALPHA_WITH_LUMINANCE"<<std::endl;
|
|
osg::Image* newImage = new osg::Image;
|
|
newImage->allocateImage(image->s(), image->t(), image->r(), GL_LUMINANCE, image->getDataType());
|
|
osg::copyImage(image, 0, 0, 0, image->s(), image->t(), image->r(),
|
|
newImage, 0, 0, 0, false);
|
|
return newImage;
|
|
}
|
|
default:
|
|
return image;
|
|
}
|
|
}
|
|
|
|
|
|
osg::TransferFunction1D* readTransferFunctionFile(const std::string& filename)
|
|
{
|
|
std::string foundFile = osgDB::findDataFile(filename);
|
|
if (foundFile.empty())
|
|
{
|
|
std::cout<<"Error: could not find transfer function file : "<<filename<<std::endl;
|
|
return 0;
|
|
}
|
|
|
|
std::cout<<"Reading transfer function "<<filename<<std::endl;
|
|
|
|
osg::TransferFunction1D::ColorMap colorMap;
|
|
osgDB::ifstream fin(foundFile.c_str());
|
|
while(fin)
|
|
{
|
|
float value, red, green, blue, alpha;
|
|
fin >> value >> red >> green >> blue >> alpha;
|
|
if (fin)
|
|
{
|
|
std::cout<<"value = "<<value<<" ("<<red<<", "<<green<<", "<<blue<<", "<<alpha<<")"<<std::endl;
|
|
colorMap[value] = osg::Vec4(red,green,blue,alpha);
|
|
}
|
|
}
|
|
|
|
if (colorMap.empty())
|
|
{
|
|
std::cout<<"Error: No values read from transfer function file: "<<filename<<std::endl;
|
|
return 0;
|
|
}
|
|
|
|
osg::TransferFunction1D* tf = new osg::TransferFunction1D;
|
|
tf->assign(colorMap);
|
|
|
|
return tf;
|
|
}
|
|
|
|
|
|
class TestSupportOperation: public osg::GraphicsOperation
|
|
{
|
|
public:
|
|
|
|
TestSupportOperation():
|
|
osg::GraphicsOperation("TestSupportOperation",false),
|
|
supported(true),
|
|
errorMessage(),
|
|
maximumTextureSize(256) {}
|
|
|
|
virtual void operator () (osg::GraphicsContext* gc)
|
|
{
|
|
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mutex);
|
|
|
|
glGetIntegerv( GL_MAX_3D_TEXTURE_SIZE, &maximumTextureSize );
|
|
|
|
osg::notify(osg::NOTICE)<<"Max texture size="<<maximumTextureSize<<std::endl;
|
|
}
|
|
|
|
OpenThreads::Mutex mutex;
|
|
bool supported;
|
|
std::string errorMessage;
|
|
GLint maximumTextureSize;
|
|
};
|
|
|
|
class DraggerVolumeTileCallback : public osgManipulator::DraggerCallback
|
|
{
|
|
public:
|
|
|
|
DraggerVolumeTileCallback(osgVolume::VolumeTile* volume, osgVolume::Locator* locator):
|
|
_volume(volume),
|
|
_locator(locator) {}
|
|
|
|
|
|
virtual bool receive(const osgManipulator::MotionCommand& command);
|
|
|
|
|
|
osg::observer_ptr<osgVolume::VolumeTile> _volume;
|
|
osg::ref_ptr<osgVolume::Locator> _locator;
|
|
|
|
osg::Matrix _startMotionMatrix;
|
|
|
|
osg::Matrix _localToWorld;
|
|
osg::Matrix _worldToLocal;
|
|
|
|
};
|
|
|
|
bool DraggerVolumeTileCallback::receive(const osgManipulator::MotionCommand& command)
|
|
{
|
|
if (!_locator) return false;
|
|
|
|
switch (command.getStage())
|
|
{
|
|
case osgManipulator::MotionCommand::START:
|
|
{
|
|
// Save the current matrix
|
|
_startMotionMatrix = _locator->getTransform();
|
|
|
|
// Get the LocalToWorld and WorldToLocal matrix for this node.
|
|
osg::NodePath nodePathToRoot;
|
|
osgManipulator::computeNodePathToRoot(*_volume,nodePathToRoot);
|
|
_localToWorld = _startMotionMatrix * osg::computeLocalToWorld(nodePathToRoot);
|
|
_worldToLocal = osg::Matrix::inverse(_localToWorld);
|
|
|
|
return true;
|
|
}
|
|
case osgManipulator::MotionCommand::MOVE:
|
|
{
|
|
// Transform the command's motion matrix into local motion matrix.
|
|
osg::Matrix localMotionMatrix = _localToWorld * command.getWorldToLocal()
|
|
* command.getMotionMatrix()
|
|
* command.getLocalToWorld() * _worldToLocal;
|
|
|
|
// Transform by the localMotionMatrix
|
|
_locator->setTransform(localMotionMatrix * _startMotionMatrix);
|
|
|
|
// osg::notify(osg::NOTICE)<<"New locator matrix "<<_locator->getTransform()<<std::endl;
|
|
|
|
return true;
|
|
}
|
|
case osgManipulator::MotionCommand::FINISH:
|
|
{
|
|
return true;
|
|
}
|
|
case osgManipulator::MotionCommand::NONE:
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
// use an ArgumentParser object to manage the program arguments.
|
|
osg::ArgumentParser arguments(&argc,argv);
|
|
|
|
// set up the usage document, in case we need to print out how to use this program.
|
|
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates use of 3D textures.");
|
|
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-s <numSlices>","Number of slices to create.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--images [filenames]","Specify a stack of 2d images to build the 3d volume from.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--shader","Use OpenGL Shading Language. (default)");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--no-shader","Disable use of OpenGL Shading Language.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--gpu-tf","Aply the transfer function on the GPU. (default)");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--cpu-tf","Apply the transfer function on the CPU.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--mip","Use Maximum Intensity Projection (MIP) filtering.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--xSize <size>","Relative width of rendered brick.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--ySize <size>","Relative length of rendered brick.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--zSize <size>","Relative height of rendered brick.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--xMultiplier <multiplier>","Tex coord x mulitplier.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--yMultiplier <multiplier>","Tex coord y mulitplier.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--zMultiplier <multiplier>","Tex coord z mulitplier.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--clip <ratio>","clip volume as a ratio, 0.0 clip all, 1.0 clip none.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--maxTextureSize <size>","Set the texture maximum resolution in the s,t,r (x,y,z) dimensions.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--s_maxTextureSize <size>","Set the texture maximum resolution in the s (x) dimension.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--t_maxTextureSize <size>","Set the texture maximum resolution in the t (y) dimension.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--r_maxTextureSize <size>","Set the texture maximum resolution in the r (z) dimension.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--compressed","Enable the usage of compressed textures.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--compressed-arb","Enable the usage of OpenGL ARB compressed textures.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--compressed-dxt1","Enable the usage of S3TC DXT1 compressed textures.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--compressed-dxt3","Enable the usage of S3TC DXT3 compressed textures.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--compressed-dxt5","Enable the usage of S3TC DXT5 compressed textures.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--modulate-alpha-by-luminance","For each pixel multiply the alpha value by the luminance.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--replace-alpha-with-luminance","For each pixel set the alpha value to the luminance.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--replace-rgb-with-luminance","For each rgb pixel convert to the luminance.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--num-components <num>","Set the number of components to in he target image.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--no-rescale","Disable the rescaling of the pixel data to 0.0 to 1.0 range");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--rescale","Enable the rescale of the pixel data to 0.0 to 1.0 range (default).");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--shift-min-to-zero","Shift the pixel data so min value is 0.0.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--sequence-length <num>","Set the length of time that a sequence of images with run for.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--sd <num>","Short hand for --sequence-length");
|
|
// arguments.getApplicationUsage()->addCommandLineOption("--raw <sizeX> <sizeY> <sizeZ> <numberBytesPerComponent> <numberOfComponents> <endian> <filename>","read a raw image data");
|
|
|
|
// construct the viewer.
|
|
osgViewer::Viewer viewer(arguments);
|
|
|
|
// add the window size toggle handler
|
|
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
|
|
|
|
{
|
|
osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
|
|
|
|
keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
|
|
|
|
osgGA::FlightManipulator* flightManipulator = new osgGA::FlightManipulator();
|
|
flightManipulator->setYawControlMode(osgGA::FlightManipulator::NO_AUTOMATIC_YAW);
|
|
keyswitchManipulator->addMatrixManipulator( '2', "Flight", flightManipulator );
|
|
|
|
viewer.setCameraManipulator( keyswitchManipulator.get() );
|
|
}
|
|
|
|
// add the stats handler
|
|
viewer.addEventHandler(new osgViewer::StatsHandler);
|
|
|
|
viewer.getCamera()->setClearColor(osg::Vec4(0.0f,0.0f,0.0f,0.0f));
|
|
|
|
// if user request help write it out to cout.
|
|
if (arguments.read("-h") || arguments.read("--help"))
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
std::string outputFile;
|
|
while (arguments.read("-o",outputFile)) {}
|
|
|
|
|
|
|
|
osg::ref_ptr<osg::TransferFunction1D> transferFunction;
|
|
std::string tranferFunctionFile;
|
|
while (arguments.read("--tf",tranferFunctionFile))
|
|
{
|
|
transferFunction = readTransferFunctionFile(tranferFunctionFile);
|
|
}
|
|
|
|
while(arguments.read("--test"))
|
|
{
|
|
transferFunction = new osg::TransferFunction1D;
|
|
transferFunction->setColor(0.0, osg::Vec4(1.0,0.0,0.0,0.0));
|
|
transferFunction->setColor(0.5, osg::Vec4(1.0,1.0,0.0,0.5));
|
|
transferFunction->setColor(1.0, osg::Vec4(0.0,0.0,1.0,1.0));
|
|
}
|
|
|
|
while(arguments.read("--test2"))
|
|
{
|
|
transferFunction = new osg::TransferFunction1D;
|
|
transferFunction->setColor(0.0, osg::Vec4(1.0,0.0,0.0,0.0));
|
|
transferFunction->setColor(0.5, osg::Vec4(1.0,1.0,0.0,0.5));
|
|
transferFunction->setColor(1.0, osg::Vec4(0.0,0.0,1.0,1.0));
|
|
transferFunction->assign(transferFunction->getColorMap());
|
|
}
|
|
|
|
unsigned int numSlices=500;
|
|
while (arguments.read("-s",numSlices)) {}
|
|
|
|
|
|
float sliceEnd=1.0f;
|
|
while (arguments.read("--clip",sliceEnd)) {}
|
|
|
|
float alphaFunc=0.02f;
|
|
while (arguments.read("--alphaFunc",alphaFunc)) {}
|
|
|
|
|
|
|
|
ShadingModel shadingModel = Standard;
|
|
while(arguments.read("--mip")) shadingModel = MaximumIntensityProjection;
|
|
|
|
while (arguments.read("--isosurface")) shadingModel = Isosurface;
|
|
|
|
while (arguments.read("--light")) shadingModel = Light;
|
|
|
|
float xSize=0.0f, ySize=0.0f, zSize=0.0f;
|
|
while (arguments.read("--xSize",xSize)) {}
|
|
while (arguments.read("--ySize",ySize)) {}
|
|
while (arguments.read("--zSize",zSize)) {}
|
|
|
|
osg::ref_ptr<TestSupportOperation> testSupportOperation = new TestSupportOperation;
|
|
viewer.setRealizeOperation(testSupportOperation.get());
|
|
|
|
viewer.realize();
|
|
|
|
int maximumTextureSize = testSupportOperation->maximumTextureSize;
|
|
int s_maximumTextureSize = maximumTextureSize;
|
|
int t_maximumTextureSize = maximumTextureSize;
|
|
int r_maximumTextureSize = maximumTextureSize;
|
|
while(arguments.read("--maxTextureSize",maximumTextureSize))
|
|
{
|
|
s_maximumTextureSize = maximumTextureSize;
|
|
t_maximumTextureSize = maximumTextureSize;
|
|
r_maximumTextureSize = maximumTextureSize;
|
|
}
|
|
while(arguments.read("--s_maxTextureSize",s_maximumTextureSize)) {}
|
|
while(arguments.read("--t_maxTextureSize",t_maximumTextureSize)) {}
|
|
while(arguments.read("--r_maxTextureSize",r_maximumTextureSize)) {}
|
|
|
|
osg::Texture::InternalFormatMode internalFormatMode = osg::Texture::USE_IMAGE_DATA_FORMAT;
|
|
while(arguments.read("--compressed") || arguments.read("--compressed-arb")) { internalFormatMode = osg::Texture::USE_ARB_COMPRESSION; }
|
|
|
|
while(arguments.read("--compressed-dxt1")) { internalFormatMode = osg::Texture::USE_S3TC_DXT1_COMPRESSION; }
|
|
while(arguments.read("--compressed-dxt3")) { internalFormatMode = osg::Texture::USE_S3TC_DXT3_COMPRESSION; }
|
|
while(arguments.read("--compressed-dxt5")) { internalFormatMode = osg::Texture::USE_S3TC_DXT5_COMPRESSION; }
|
|
|
|
|
|
// set up colour space operation.
|
|
ColourSpaceOperation colourSpaceOperation = NO_COLOUR_SPACE_OPERATION;
|
|
osg::Vec4 colourModulate(0.25f,0.25f,0.25f,0.25f);
|
|
while(arguments.read("--modulate-alpha-by-luminance")) { colourSpaceOperation = MODULATE_ALPHA_BY_LUMINANCE; }
|
|
while(arguments.read("--modulate-alpha-by-colour", colourModulate.x(),colourModulate.y(),colourModulate.z(),colourModulate.w() )) { colourSpaceOperation = MODULATE_ALPHA_BY_COLOUR; }
|
|
while(arguments.read("--replace-alpha-with-luminance")) { colourSpaceOperation = REPLACE_ALPHA_WITH_LUMINANCE; }
|
|
while(arguments.read("--replace-rgb-with-luminance")) { colourSpaceOperation = REPLACE_RGB_WITH_LUMINANCE; }
|
|
|
|
|
|
enum RescaleOperation
|
|
{
|
|
NO_RESCALE,
|
|
RESCALE_TO_ZERO_TO_ONE_RANGE,
|
|
SHIFT_MIN_TO_ZERO
|
|
};
|
|
|
|
RescaleOperation rescaleOperation = RESCALE_TO_ZERO_TO_ONE_RANGE;
|
|
while(arguments.read("--no-rescale")) rescaleOperation = NO_RESCALE;
|
|
while(arguments.read("--rescale")) rescaleOperation = RESCALE_TO_ZERO_TO_ONE_RANGE;
|
|
while(arguments.read("--shift-min-to-zero")) rescaleOperation = SHIFT_MIN_TO_ZERO;
|
|
|
|
|
|
bool resizeToPowerOfTwo = false;
|
|
|
|
unsigned int numComponentsDesired = 0;
|
|
while(arguments.read("--num-components", numComponentsDesired)) {}
|
|
|
|
bool useManipulator = false;
|
|
while(arguments.read("--manipulator") || arguments.read("-m")) { useManipulator = true; }
|
|
|
|
|
|
bool useShader = true;
|
|
while(arguments.read("--shader")) { useShader = true; }
|
|
while(arguments.read("--no-shader")) { useShader = false; }
|
|
|
|
bool gpuTransferFunction = true;
|
|
while(arguments.read("--gpu-tf")) { gpuTransferFunction = true; }
|
|
while(arguments.read("--cpu-tf")) { gpuTransferFunction = false; }
|
|
|
|
double sequenceLength = 10.0;
|
|
while(arguments.read("--sequence-duration", sequenceLength) ||
|
|
arguments.read("--sd", sequenceLength)) {}
|
|
|
|
typedef std::list< osg::ref_ptr<osg::Image> > Images;
|
|
Images images;
|
|
|
|
|
|
std::string vh_filename;
|
|
while (arguments.read("--vh", vh_filename))
|
|
{
|
|
std::string raw_filename, transfer_filename;
|
|
int xdim(0), ydim(0), zdim(0);
|
|
|
|
osgDB::ifstream header(vh_filename.c_str());
|
|
if (header)
|
|
{
|
|
header >> raw_filename >> transfer_filename >> xdim >> ydim >> zdim >> xSize >> ySize >> zSize;
|
|
}
|
|
|
|
if (xdim*ydim*zdim==0)
|
|
{
|
|
std::cout<<"Error in reading volume header "<<vh_filename<<std::endl;
|
|
return 1;
|
|
}
|
|
|
|
if (!raw_filename.empty())
|
|
{
|
|
images.push_back(readRaw(xdim, ydim, zdim, 1, 1, "little", raw_filename));
|
|
}
|
|
|
|
if (!transfer_filename.empty())
|
|
{
|
|
osgDB::ifstream fin(transfer_filename.c_str());
|
|
if (fin)
|
|
{
|
|
osg::TransferFunction1D::ColorMap colorMap;
|
|
float value = 0.0;
|
|
while(fin && value<=1.0)
|
|
{
|
|
float red, green, blue, alpha;
|
|
fin >> red >> green >> blue >> alpha;
|
|
if (fin)
|
|
{
|
|
colorMap[value] = osg::Vec4(red/255.0f,green/255.0f,blue/255.0f,alpha/255.0f);
|
|
std::cout<<"value = "<<value<<" ("<<red<<", "<<green<<", "<<blue<<", "<<alpha<<")";
|
|
std::cout<<" ("<<colorMap[value]<<")"<<std::endl;
|
|
}
|
|
value += 1/255.0;
|
|
}
|
|
|
|
if (colorMap.empty())
|
|
{
|
|
std::cout<<"Error: No values read from transfer function file: "<<transfer_filename<<std::endl;
|
|
return 0;
|
|
}
|
|
|
|
transferFunction = new osg::TransferFunction1D;
|
|
transferFunction->assign(colorMap);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
int sizeX, sizeY, sizeZ, numberBytesPerComponent, numberOfComponents;
|
|
std::string endian, raw_filename;
|
|
while (arguments.read("--raw", sizeX, sizeY, sizeZ, numberBytesPerComponent, numberOfComponents, endian, raw_filename))
|
|
{
|
|
images.push_back(readRaw(sizeX, sizeY, sizeZ, numberBytesPerComponent, numberOfComponents, endian, raw_filename));
|
|
}
|
|
|
|
int images_pos = arguments.find("--images");
|
|
if (images_pos>=0)
|
|
{
|
|
ImageList imageList;
|
|
int pos=images_pos+1;
|
|
for(;pos<arguments.argc() && !arguments.isOption(pos);++pos)
|
|
{
|
|
// not an option so assume string is a filename.
|
|
osg::Image *image = osgDB::readImageFile( arguments[pos]);
|
|
|
|
if(image)
|
|
{
|
|
imageList.push_back(image);
|
|
}
|
|
}
|
|
|
|
arguments.remove(images_pos, pos-images_pos);
|
|
|
|
// pack the textures into a single texture.
|
|
ProcessRow processRow;
|
|
images.push_back(createTexture3D(imageList, processRow, numComponentsDesired, s_maximumTextureSize, t_maximumTextureSize, r_maximumTextureSize, resizeToPowerOfTwo));
|
|
}
|
|
|
|
|
|
// any option left unread are converted into errors to write out later.
|
|
arguments.reportRemainingOptionsAsUnrecognized();
|
|
|
|
// report any errors if they have occurred when parsing the program arguments.
|
|
if (arguments.errors())
|
|
{
|
|
arguments.writeErrorMessages(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
|
|
// assume remaining arguments are file names of textures.
|
|
for(int pos=1;pos<arguments.argc();++pos)
|
|
{
|
|
if (!arguments.isOption(pos))
|
|
{
|
|
std::string filename = arguments[pos];
|
|
if (osgDB::getLowerCaseFileExtension(filename)=="dicom")
|
|
{
|
|
// not an option so assume string is a filename.
|
|
osg::Image *image = osgDB::readImageFile(filename);
|
|
if(image)
|
|
{
|
|
images.push_back(image);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
osgDB::FileType fileType = osgDB::fileType(filename);
|
|
if (fileType == osgDB::FILE_NOT_FOUND)
|
|
{
|
|
filename = osgDB::findDataFile(filename);
|
|
fileType = osgDB::fileType(filename);
|
|
}
|
|
|
|
if (fileType == osgDB::DIRECTORY)
|
|
{
|
|
osg::Image *image = osgDB::readImageFile(filename+".dicom");
|
|
if(image)
|
|
{
|
|
images.push_back(image);
|
|
}
|
|
}
|
|
else if (fileType == osgDB::REGULAR_FILE)
|
|
{
|
|
// not an option so assume string is a filename.
|
|
images.push_back(osgDB::readImageFile( filename ));
|
|
}
|
|
else
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Error: could not find file: "<<filename<<std::endl;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (images.empty())
|
|
{
|
|
std::cout<<"No model loaded, please specify and volumetric image file on the command line."<<std::endl;
|
|
return 1;
|
|
}
|
|
|
|
|
|
Images::iterator sizeItr = images.begin();
|
|
int image_s = (*sizeItr)->s();
|
|
int image_t = (*sizeItr)->t();
|
|
int image_r = (*sizeItr)->r();
|
|
++sizeItr;
|
|
|
|
for(;sizeItr != images.end(); ++sizeItr)
|
|
{
|
|
if ((*sizeItr)->s() != image_s ||
|
|
(*sizeItr)->t() != image_t ||
|
|
(*sizeItr)->r() != image_r)
|
|
{
|
|
std::cout<<"Images in sequence are not of the same dimensions."<<std::endl;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
|
|
osg::ref_ptr<osgVolume::ImageDetails> details = dynamic_cast<osgVolume::ImageDetails*>(images.front()->getUserData());
|
|
osg::ref_ptr<osg::RefMatrix> matrix = details ? details->getMatrix() : dynamic_cast<osg::RefMatrix*>(images.front()->getUserData());
|
|
|
|
if (!matrix)
|
|
{
|
|
if (xSize==0.0) xSize = static_cast<float>(image_s);
|
|
if (ySize==0.0) ySize = static_cast<float>(image_t);
|
|
if (zSize==0.0) zSize = static_cast<float>(image_r);
|
|
|
|
matrix = new osg::RefMatrix(xSize, 0.0, 0.0, 0.0,
|
|
0.0, ySize, 0.0, 0.0,
|
|
0.0, 0.0, zSize, 0.0,
|
|
0.0, 0.0, 0.0, 1.0);
|
|
}
|
|
|
|
osg::Vec4 minValue(FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX);
|
|
osg::Vec4 maxValue(-FLT_MAX, -FLT_MAX, -FLT_MAX, -FLT_MAX);
|
|
bool computeMinMax = false;
|
|
for(Images::iterator itr = images.begin();
|
|
itr != images.end();
|
|
++itr)
|
|
{
|
|
osg::Vec4 localMinValue, localMaxValue;
|
|
if (osg::computeMinMax(itr->get(), localMinValue, localMaxValue))
|
|
{
|
|
if (localMinValue.r()<minValue.r()) minValue.r() = localMinValue.r();
|
|
if (localMinValue.g()<minValue.g()) minValue.g() = localMinValue.g();
|
|
if (localMinValue.b()<minValue.b()) minValue.b() = localMinValue.b();
|
|
if (localMinValue.a()<minValue.a()) minValue.a() = localMinValue.a();
|
|
|
|
if (localMaxValue.r()>maxValue.r()) maxValue.r() = localMaxValue.r();
|
|
if (localMaxValue.g()>maxValue.g()) maxValue.g() = localMaxValue.g();
|
|
if (localMaxValue.b()>maxValue.b()) maxValue.b() = localMaxValue.b();
|
|
if (localMaxValue.a()>maxValue.a()) maxValue.a() = localMaxValue.a();
|
|
|
|
osg::notify(osg::NOTICE)<<" ("<<localMinValue<<") ("<<localMaxValue<<") "<<(*itr)->getFileName()<<std::endl;
|
|
|
|
computeMinMax = true;
|
|
}
|
|
}
|
|
|
|
if (computeMinMax)
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Min value "<<minValue<<std::endl;
|
|
osg::notify(osg::NOTICE)<<"Max value "<<maxValue<<std::endl;
|
|
|
|
float minComponent = minValue[0];
|
|
minComponent = osg::minimum(minComponent,minValue[1]);
|
|
minComponent = osg::minimum(minComponent,minValue[2]);
|
|
minComponent = osg::minimum(minComponent,minValue[3]);
|
|
|
|
float maxComponent = maxValue[0];
|
|
maxComponent = osg::maximum(maxComponent,maxValue[1]);
|
|
maxComponent = osg::maximum(maxComponent,maxValue[2]);
|
|
maxComponent = osg::maximum(maxComponent,maxValue[3]);
|
|
|
|
#if 0
|
|
switch(rescaleOperation)
|
|
{
|
|
case(NO_RESCALE):
|
|
break;
|
|
|
|
case(RESCALE_TO_ZERO_TO_ONE_RANGE):
|
|
{
|
|
float scale = 0.99f/(maxComponent-minComponent);
|
|
float offset = -minComponent * scale;
|
|
|
|
for(Images::iterator itr = images.begin();
|
|
itr != images.end();
|
|
++itr)
|
|
{
|
|
osg::offsetAndScaleImage(itr->get(),
|
|
osg::Vec4(offset, offset, offset, offset),
|
|
osg::Vec4(scale, scale, scale, scale));
|
|
}
|
|
break;
|
|
}
|
|
case(SHIFT_MIN_TO_ZERO):
|
|
{
|
|
float offset = -minComponent;
|
|
|
|
for(Images::iterator itr = images.begin();
|
|
itr != images.end();
|
|
++itr)
|
|
{
|
|
osg::offsetAndScaleImage(itr->get(),
|
|
osg::Vec4(offset, offset, offset, offset),
|
|
osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f));
|
|
}
|
|
break;
|
|
}
|
|
};
|
|
#endif
|
|
}
|
|
|
|
|
|
if (colourSpaceOperation!=NO_COLOUR_SPACE_OPERATION)
|
|
{
|
|
for(Images::iterator itr = images.begin();
|
|
itr != images.end();
|
|
++itr)
|
|
{
|
|
(*itr) = doColourSpaceConversion(colourSpaceOperation, itr->get(), colourModulate);
|
|
}
|
|
}
|
|
|
|
if (!gpuTransferFunction && transferFunction.valid())
|
|
{
|
|
for(Images::iterator itr = images.begin();
|
|
itr != images.end();
|
|
++itr)
|
|
{
|
|
*itr = osgVolume::applyTransferFunction(itr->get(), transferFunction.get());
|
|
}
|
|
}
|
|
|
|
osg::ref_ptr<osg::Image> image_3d = 0;
|
|
|
|
if (images.size()==1)
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Single image "<<images.size()<<" volumes."<<std::endl;
|
|
image_3d = images.front();
|
|
}
|
|
else
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Creating sequence of "<<images.size()<<" volumes."<<std::endl;
|
|
|
|
osg::ref_ptr<osg::ImageSequence> imageSequence = new osg::ImageSequence;
|
|
imageSequence->setLength(sequenceLength);
|
|
image_3d = imageSequence.get();
|
|
for(Images::iterator itr = images.begin();
|
|
itr != images.end();
|
|
++itr)
|
|
{
|
|
imageSequence->addImage(itr->get());
|
|
}
|
|
imageSequence->play();
|
|
}
|
|
|
|
osg::ref_ptr<osgVolume::Volume> volume = new osgVolume::Volume;
|
|
osg::ref_ptr<osgVolume::VolumeTile> tile = new osgVolume::VolumeTile;
|
|
volume->addChild(tile.get());
|
|
|
|
osg::ref_ptr<osgVolume::ImageLayer> layer = new osgVolume::ImageLayer(image_3d.get());
|
|
|
|
if (details)
|
|
{
|
|
layer->setTexelOffset(details->getTexelOffset());
|
|
layer->setTexelScale(details->getTexelScale());
|
|
}
|
|
|
|
switch(rescaleOperation)
|
|
{
|
|
case(NO_RESCALE):
|
|
break;
|
|
|
|
case(RESCALE_TO_ZERO_TO_ONE_RANGE):
|
|
{
|
|
layer->rescaleToZeroToOneRange();
|
|
break;
|
|
}
|
|
case(SHIFT_MIN_TO_ZERO):
|
|
{
|
|
layer->translateMinToZero();
|
|
break;
|
|
}
|
|
};
|
|
|
|
layer->setLocator(new osgVolume::Locator(*matrix));
|
|
tile->setLocator(new osgVolume::Locator(*matrix));
|
|
|
|
tile->setLayer(layer.get());
|
|
|
|
tile->setEventCallback(new osgVolume::PropertyAdjustmentCallback());
|
|
|
|
if (useShader)
|
|
{
|
|
|
|
osgVolume::SwitchProperty* sp = new osgVolume::SwitchProperty;
|
|
sp->setActiveProperty(0);
|
|
|
|
osgVolume::AlphaFuncProperty* ap = new osgVolume::AlphaFuncProperty(alphaFunc);
|
|
osgVolume::SampleDensityProperty* sd = new osgVolume::SampleDensityProperty(0.005);
|
|
osgVolume::TransparencyProperty* tp = new osgVolume::TransparencyProperty(1.0);
|
|
osgVolume::TransferFunctionProperty* tfp = transferFunction.valid() ? new osgVolume::TransferFunctionProperty(transferFunction.get()) : 0;
|
|
|
|
{
|
|
// Standard
|
|
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
|
|
cp->addProperty(ap);
|
|
cp->addProperty(sd);
|
|
cp->addProperty(tp);
|
|
if (tfp) cp->addProperty(tfp);
|
|
|
|
sp->addProperty(cp);
|
|
}
|
|
|
|
{
|
|
// Light
|
|
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
|
|
cp->addProperty(ap);
|
|
cp->addProperty(sd);
|
|
cp->addProperty(tp);
|
|
cp->addProperty(new osgVolume::LightingProperty);
|
|
if (tfp) cp->addProperty(tfp);
|
|
|
|
sp->addProperty(cp);
|
|
}
|
|
|
|
{
|
|
// Isosurface
|
|
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
|
|
cp->addProperty(sd);
|
|
cp->addProperty(tp);
|
|
cp->addProperty(new osgVolume::IsoSurfaceProperty(alphaFunc));
|
|
if (tfp) cp->addProperty(tfp);
|
|
|
|
sp->addProperty(cp);
|
|
}
|
|
|
|
{
|
|
// MaximumIntensityProjection
|
|
osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
|
|
cp->addProperty(ap);
|
|
cp->addProperty(sd);
|
|
cp->addProperty(tp);
|
|
cp->addProperty(new osgVolume::MaximumIntensityProjectionProperty);
|
|
if (tfp) cp->addProperty(tfp);
|
|
|
|
sp->addProperty(cp);
|
|
}
|
|
|
|
switch(shadingModel)
|
|
{
|
|
case(Standard): sp->setActiveProperty(0); break;
|
|
case(Light): sp->setActiveProperty(1); break;
|
|
case(Isosurface): sp->setActiveProperty(2); break;
|
|
case(MaximumIntensityProjection): sp->setActiveProperty(3); break;
|
|
}
|
|
layer->addProperty(sp);
|
|
|
|
|
|
tile->setVolumeTechnique(new osgVolume::RayTracedTechnique);
|
|
}
|
|
else
|
|
{
|
|
layer->addProperty(new osgVolume::AlphaFuncProperty(alphaFunc));
|
|
tile->setVolumeTechnique(new osgVolume::FixedFunctionTechnique);
|
|
}
|
|
|
|
if (!outputFile.empty())
|
|
{
|
|
std::string ext = osgDB::getFileExtension(outputFile);
|
|
std::string name_no_ext = osgDB::getNameLessExtension(outputFile);
|
|
if (ext=="osg")
|
|
{
|
|
if (image_3d.valid())
|
|
{
|
|
image_3d->setFileName(name_no_ext + ".dds");
|
|
osgDB::writeImageFile(*image_3d, image_3d->getFileName());
|
|
}
|
|
osgDB::writeNodeFile(*volume, outputFile);
|
|
}
|
|
else if (ext=="ive")
|
|
{
|
|
osgDB::writeNodeFile(*volume, outputFile);
|
|
}
|
|
else if (ext=="dds")
|
|
{
|
|
osgDB::writeImageFile(*image_3d, outputFile);
|
|
}
|
|
else
|
|
{
|
|
std::cout<<"Extension not support for file output, not file written."<<std::endl;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (volume.valid())
|
|
{
|
|
|
|
osg::ref_ptr<osg::Node> loadedModel = volume.get();
|
|
|
|
if (useManipulator)
|
|
{
|
|
osg::ref_ptr<osg::Group> group = new osg::Group;
|
|
|
|
#if 1
|
|
osg::ref_ptr<osgManipulator::Dragger> dragger = new osgManipulator::TabBoxDragger;
|
|
#else
|
|
osg::ref_ptr<osgManipulator::Dragger> dragger = new osgManipulator::TrackballDragger();
|
|
#endif
|
|
dragger->setupDefaultGeometry();
|
|
dragger->setHandleEvents(true);
|
|
dragger->setActivationModKeyMask(osgGA::GUIEventAdapter::MODKEY_SHIFT);
|
|
dragger->addDraggerCallback(new DraggerVolumeTileCallback(tile.get(), tile->getLocator()));
|
|
dragger->setMatrix(osg::Matrix::translate(0.5,0.5,0.5)*tile->getLocator()->getTransform());
|
|
|
|
|
|
group->addChild(dragger.get());
|
|
|
|
//dragger->addChild(volume.get());
|
|
|
|
group->addChild(volume.get());
|
|
|
|
loadedModel = group;
|
|
}
|
|
|
|
|
|
// set the scene to render
|
|
viewer.setSceneData(loadedModel.get());
|
|
|
|
// the the viewers main frame loop
|
|
viewer.run();
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|