root/OpenSceneGraph/trunk/examples/osgvolume/osgvolume.cpp @ 12597

Revision 12597, 45.2 kB (checked in by robert, 3 years ago)

Resolved warnings reported by g++ 4.6's -Wunused-but-set-variable.

Warnings were:

/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osg/ShapeDrawable.cpp: In member function ‘void PrimitiveShapeVisitor::createHalfSphere(unsigned int, unsigned int, float, int, float, const Matrix&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osg/ShapeDrawable.cpp:1409:11: warning: variable ‘nzBase’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osg/ShapeDrawable.cpp:1410:11: warning: variable ‘nRatioBase’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgUtil/DelaunayTriangulator.cpp: In function ‘osgUtil::Triangle_list osgUtil::fillHole(osg::Vec3Array*, std::vector<unsigned int, std::allocator<unsigned int> >)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgUtil/DelaunayTriangulator.cpp:569:27: warning: variable ‘ptest’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgUtil/DelaunayTriangulator.cpp: In member function ‘bool osgUtil::DelaunayTriangulator::triangulate()’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgUtil/DelaunayTriangulator.cpp:979:45: warning: variable ‘curp’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgUtil/RenderStage.cpp: In member function ‘void osgUtil::RenderStage::runCameraSetUp(osg::RenderInfo?&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgUtil/RenderStage.cpp:631:18: warning: variable ‘stencilAttached’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgText/FadeText.cpp: In member function ‘void FadeTextPolytopeData::buildPolytope()’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgText/FadeText.cpp:74:20: warning: variable ‘edge23’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgText/FadeText.cpp:75:20: warning: variable ‘edge30’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgText/Text.cpp: In member function ‘void osgText::Text::computeBackdropPositions(unsigned int) const’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgText/Text.cpp:747:10: warning: variable ‘is_valid_size’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgGA/NodeTrackerManipulator.cpp: In member function ‘virtual bool osgGA::NodeTrackerManipulator::performMovementLeftMouseButton(double, double, double)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgGA/NodeTrackerManipulator.cpp:257:21: warning: variable ‘lookVector’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgGA/NodeTrackerManipulator.cpp:259:21: warning: variable ‘upVector’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgGA/TerrainManipulator.cpp: In member function ‘virtual bool osgGA::TerrainManipulator::performMovementMiddleMouseButton(double, double, double)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgGA/TerrainManipulator.cpp:217:11: warning: variable ‘lookVector’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgGA/TerrainManipulator.cpp:219:11: warning: variable ‘upVector’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgVolume/FixedFunctionTechnique.cpp: In member function ‘virtual void osgVolume::FixedFunctionTechnique::init()’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgVolume/FixedFunctionTechnique.cpp:124:30: warning: variable ‘tf’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgParticle/FluidProgram.cpp: In member function ‘virtual void osgParticle::FluidProgram::execute(double)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgParticle/FluidProgram.cpp:38:23: warning: variable ‘velBefore’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgShadow/ParallelSplitShadowMap.cpp: In member function ‘virtual void osgShadow::ParallelSplitShadowMap::cull(osgUtil::CullVisitor?&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgShadow/ParallelSplitShadowMap.cpp:593:22: warning: variable ‘bb’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgTerrain/GeometryTechnique.cpp: In member function ‘virtual void osgTerrain::GeometryTechnique::generateGeometry(osgTerrain::GeometryTechnique::BufferData?&, osgTerrain::Locator*, const osg::Vec3d&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgTerrain/GeometryTechnique.cpp:777:12: warning: variable ‘i_sampleFactor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgTerrain/GeometryTechnique.cpp:778:12: warning: variable ‘j_sampleFactor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/dds/ReaderWriterDDS.cpp: In function ‘osg::Image* ReadDDSFile(std::istream&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/dds/ReaderWriterDDS.cpp:314:10: warning: variable ‘is3dImage’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/dds/ReaderWriterDDS.cpp: In function ‘bool WriteDDSFile(const osg::Image*, std::ostream&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/dds/ReaderWriterDDS.cpp:721:10: warning: variable ‘is3dImage’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/hdr/hdrloader.cpp: In static member function ‘static bool HDRLoader::load(const char*, bool, HDRLoaderResult&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/hdr/hdrloader.cpp:101:10: warning: variable ‘cmd’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/vtf/ReaderWriterVTF.cpp: In function ‘osg::Image* ReadVTFFile(std::istream&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/vtf/ReaderWriterVTF.cpp:360:23: warning: variable ‘base’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/jp2/ReaderWriterJP2.cpp: In function ‘int putdata(jas_stream_t*, jas_image_t*, int)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/jp2/ReaderWriterJP2.cpp:41:13: warning: variable ‘linelen’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/Inventor/ConvertToInventor.cpp: In member function ‘void ConvertToInventor::processGeometry(const osg::Geometry*, ConvertToInventor::InventorState?*)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/Inventor/ConvertToInventor.cpp:1639:10: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/Inventor/ConvertFromInventor.cpp: In member function ‘virtual SbBool? SoVRMLImageTextureOsg::readInstance(SoInput?*, short unsigned int)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/Inventor/ConvertFromInventor.cpp:1264:16: warning: variable ‘retval’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/OpenFlight/GeometryRecords.cpp: In member function ‘virtual void flt::Face::readRecord(flt::RecordInputStream?&, flt::Document&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/OpenFlight/GeometryRecords.cpp:369:19: warning: variable ‘secondaryPackedColor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/OpenFlight/GeometryRecords.cpp: In member function ‘virtual void flt::Mesh::readRecord(flt::RecordInputStream?&, flt::Document&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/OpenFlight/GeometryRecords.cpp:942:19: warning: variable ‘secondaryPackedColor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp: In member function ‘virtual osgDB::ReaderWriter::ReadResult? FLTReaderWriter::readNode(std::istream&, const Options*) const’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp:427:40: warning: variable ‘pos’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ive/ShapeAttributeList.cpp: In member function ‘void ive::ShapeAttributeList::write(ive::DataOutputStream?*)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ive/ShapeAttributeList.cpp:31:48: warning: variable ‘it’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ac/Geode.cpp: In member function ‘void ac3d::Geode::ProcessGeometry?(std::ostream&, unsigned int)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ac/Geode.cpp:806:35: warning: variable ‘fRep_s’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ac/Geode.cpp:806:43: warning: variable ‘fRep_t’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ac/Geode.cpp:807:35: warning: variable ‘fOffset_s’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ac/Geode.cpp:807:46: warning: variable ‘fOffset_t’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/ac/Geode.cpp:932:38: warning: variable ‘primLength’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/txp/trpage_geom.cpp: In member function ‘virtual bool trpgGeometry::Write(trpgWriteBuffer&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/txp/trpage_geom.cpp:615:19: warning: variable ‘u’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/txp/trpage_material.cpp: In member function ‘int trpgMatTable::AddMaterial?(const trpgMaterial&, bool)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/txp/trpage_material.cpp:103:10: warning: variable ‘spaceInTable’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/txp/trpage_rarchive.cpp: In member function ‘virtual bool trpgr_Archive::ReadHeader?(bool)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/txp/trpage_rarchive.cpp:261:14: warning: variable ‘headerHasTexTable’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/zip/unzip.cpp: In member function ‘ZRESULT TUnzip::Get(int, ZIPENTRY*)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/zip/unzip.cpp:4055:8: warning: variable ‘hidden’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/zip/unzip.cpp:4055:22: warning: variable ‘system’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/zip/unzip.cpp:4055:36: warning: variable ‘archive’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/zip/ZipArchive.cpp: In member function ‘virtual bool ZipArchive::getFileNames(osgDB::Archive::FileNameList?&) const’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/zip/ZipArchive.cpp:91:37: warning: variable ‘iterEnd’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/pvr/ReaderWriterPVR.cpp: In member function ‘osgDB::ReaderWriter::ReadResult? ReaderWriterPVR::readPVRStream(std::istream&) const’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/pvr/ReaderWriterPVR.cpp:155:14: warning: variable ‘hasAlpha’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/View.cpp: In function ‘osg::Geometry* create3DSphericalDisplayDistortionMesh(const Vec3&, const Vec3&, const Vec3&, double, double, osg::Image*, const Matrix&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/View.cpp:737:15: warning: variable ‘cursor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/View.cpp: In function ‘osg::Geometry* createParoramicSphericalDisplayDistortionMesh(const Vec3&, const Vec3&, const Vec3&, double, double, osg::Image*, const Matrix&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/View.cpp:1130:19: warning: variable ‘cursor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/View.cpp:1118:15: warning: variable ‘dx’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/GraphicsWindowX11.cpp: In member function ‘virtual void osgViewer::GraphicsWindowX11::checkEvents()’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgViewer/GraphicsWindowX11.cpp:1181:10: warning: variable ‘destroyWindowRequested’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/cfg/ConfigParser.cpp: In member function ‘bool osgProducer::CameraConfig::parseFile(const string&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/cfg/ConfigParser.cpp:2247:13: warning: variable ‘result’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgQt/QGraphicsViewAdapter.cpp: In member function ‘bool osgQt::QGraphicsViewAdapter::handlePointerEvent(int, int, int)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgQt/QGraphicsViewAdapter.cpp:344:17: warning: variable ‘viewportGeometry’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgdistortion/osgdistortion.cpp: In function ‘osg::Node* createDistortionSubgraph(osg::Node*, const Vec4&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgdistortion/osgdistortion.cpp:125:19: warning: variable ‘cursor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgdistortion/osgdistortion.cpp:126:19: warning: variable ‘texcoord’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgdistortion/osgdistortion.cpp: In function ‘osg::Geometry* createDomeDistortionMesh(const Vec3&, const Vec3&, const Vec3&, osg::ArgumentParser?&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgdistortion/osgdistortion.cpp:358:15: warning: variable ‘cursor’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgposter/osgposter.cpp: In function ‘int main(int, char**)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgposter/osgposter.cpp:253:31: warning: variable ‘outputTiles’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgthreadedterrain/osgthreadedterrain.cpp: In function ‘int main(int, char**)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgthreadedterrain/osgthreadedterrain.cpp:669:10: warning: variable ‘readParameter’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgtext3D/TextNode.cpp: In member function ‘virtual void osgText::Layout::layout(osgText::TextNode?&) const’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgtext3D/TextNode.cpp:80:11: warning: variable ‘characterHeightScale’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgvolume/osgvolume.cpp: In function ‘int main(int, char**)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgvolume/osgvolume.cpp:678:38: warning: variable ‘internalFormatMode’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgwidgetcanvas/osgwidgetcanvas.cpp: In function ‘bool windowMouseOver(osgWidget::Event&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgwidgetcanvas/osgwidgetcanvas.cpp:27:24: warning: variable ‘xy’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgwidgetcanvas/osgwidgetcanvas.cpp: In function ‘bool widgetMouseOver(osgWidget::Event&)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/examples/osgwidgetcanvas/osgwidgetcanvas.cpp:35:24: warning: variable ‘xy’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/p3d/ReaderWriterP3D.cpp: In member function ‘osg::Node* ReaderWriterP3DXML::parseXmlGraph(osgDB::XmlNode?*, bool, osgDB::Options*) const’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/src/osgPlugins/p3d/ReaderWriterP3D.cpp:2121:10: warning: variable ‘readSlide’ set but not used [-Wunused-but-set-variable]
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/applications/present3D/present3D.cpp: In function ‘int main(int, char**)’:
/home/stephan/Dev/LibSources/OpenSceneGraph-3.0.0-rc2/applications/present3D/present3D.cpp:639:10: warning: variable ‘sizesSpecified’ set but not used [-Wunused-but-set-variable]

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
Line 
1/* OpenSceneGraph example, osgvolume.
2*
3*  Permission is hereby granted, free of charge, to any person obtaining a copy
4*  of this software and associated documentation files (the "Software"), to deal
5*  in the Software without restriction, including without limitation the rights
6*  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7*  copies of the Software, and to permit persons to whom the Software is
8*  furnished to do so, subject to the following conditions:
9*
10*  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
11*  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12*  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
13*  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
14*  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
15*  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
16*  THE SOFTWARE.
17*/
18
19#include <osg/Node>
20#include <osg/Geometry>
21#include <osg/Notify>
22#include <osg/Texture3D>
23#include <osg/Texture1D>
24#include <osg/ImageSequence>
25#include <osg/TexGen>
26#include <osg/Geode>
27#include <osg/Billboard>
28#include <osg/PositionAttitudeTransform>
29#include <osg/ClipNode>
30#include <osg/AlphaFunc>
31#include <osg/TexGenNode>
32#include <osg/TexEnv>
33#include <osg/TexEnvCombine>
34#include <osg/Material>
35#include <osg/PrimitiveSet>
36#include <osg/Endian>
37#include <osg/BlendFunc>
38#include <osg/BlendEquation>
39#include <osg/TransferFunction>
40#include <osg/MatrixTransform>
41
42#include <osgDB/Registry>
43#include <osgDB/ReadFile>
44#include <osgDB/WriteFile>
45#include <osgDB/FileUtils>
46#include <osgDB/FileNameUtils>
47
48#include <osgGA/EventVisitor>
49#include <osgGA/TrackballManipulator>
50#include <osgGA/FlightManipulator>
51#include <osgGA/KeySwitchMatrixManipulator>
52
53#include <osgUtil/CullVisitor>
54
55#include <osgViewer/Viewer>
56#include <osgViewer/ViewerEventHandlers>
57
58#include <osgManipulator/TabBoxDragger>
59#include <osgManipulator/TabPlaneTrackballDragger>
60#include <osgManipulator/TrackballDragger>
61
62#include <osg/io_utils>
63
64#include <algorithm>
65#include <iostream>
66
67#include <osg/ImageUtils>
68#include <osgVolume/Volume>
69#include <osgVolume/VolumeTile>
70#include <osgVolume/RayTracedTechnique>
71#include <osgVolume/FixedFunctionTechnique>
72
73enum ShadingModel
74{
75    Standard,
76    Light,
77    Isosurface,
78    MaximumIntensityProjection
79};
80
81
82osg::Image* createTexture3D(osg::ImageList& imageList,
83            unsigned int numComponentsDesired,
84            int s_maximumTextureSize,
85            int t_maximumTextureSize,
86            int r_maximumTextureSize,
87            bool resizeToPowerOfTwo)
88{
89
90    if (numComponentsDesired==0)
91    {
92        return osg::createImage3DWithAlpha(imageList,
93                                        s_maximumTextureSize,
94                                        t_maximumTextureSize,
95                                        r_maximumTextureSize,
96                                        resizeToPowerOfTwo);
97    }
98    else
99    {
100        GLenum desiredPixelFormat = 0;
101        switch(numComponentsDesired)
102        {
103            case(1) : desiredPixelFormat = GL_LUMINANCE; break;
104            case(2) : desiredPixelFormat = GL_LUMINANCE_ALPHA; break;
105            case(3) : desiredPixelFormat = GL_RGB; break;
106            case(4) : desiredPixelFormat = GL_RGBA; break;
107        }
108
109        return osg::createImage3D(imageList,
110                                        desiredPixelFormat,
111                                        s_maximumTextureSize,
112                                        t_maximumTextureSize,
113                                        r_maximumTextureSize,
114                                        resizeToPowerOfTwo);
115    }
116}
117
118struct ModulateAlphaByLuminanceOperator
119{
120    ModulateAlphaByLuminanceOperator() {}
121
122    inline void luminance(float&) const {}
123    inline void alpha(float&) const {}
124    inline void luminance_alpha(float& l,float& a) const { a*= l; }
125    inline void rgb(float&,float&,float&) const {}
126    inline void rgba(float& r,float& g,float& b,float& a) const { float l = (r+g+b)*0.3333333; a *= l;}
127};
128
129
130struct ScaleOperator
131{
132    ScaleOperator():_scale(1.0f) {}
133    ScaleOperator(float scale):_scale(scale) {}
134    ScaleOperator(const ScaleOperator& so):_scale(so._scale) {}
135
136    ScaleOperator& operator = (const ScaleOperator& so) { _scale = so._scale; return *this; }
137
138    float _scale;
139
140    inline void luminance(float& l) const { l*= _scale; }
141    inline void alpha(float& a) const { a*= _scale; }
142    inline void luminance_alpha(float& l,float& a) const { l*= _scale; a*= _scale;  }
143    inline void rgb(float& r,float& g,float& b) const { r*= _scale; g*=_scale; b*=_scale; }
144    inline void rgba(float& r,float& g,float& b,float& a) const { r*= _scale; g*=_scale; b*=_scale; a*=_scale; }
145};
146
147struct RecordRowOperator
148{
149    RecordRowOperator(unsigned int num):_colours(num),_pos(0) {}
150
151    mutable std::vector<osg::Vec4>  _colours;
152    mutable unsigned int            _pos;
153
154    inline void luminance(float l) const { rgba(l,l,l,1.0f); }
155    inline void alpha(float a) const { rgba(1.0f,1.0f,1.0f,a); }
156    inline void luminance_alpha(float l,float a) const { rgba(l,l,l,a);  }
157    inline void rgb(float r,float g,float b) const { rgba(r,g,b,1.0f); }
158    inline void rgba(float r,float g,float b,float a) const { _colours[_pos++].set(r,g,b,a); }
159};
160
161struct WriteRowOperator
162{
163    WriteRowOperator():_pos(0) {}
164    WriteRowOperator(unsigned int num):_colours(num),_pos(0) {}
165
166    std::vector<osg::Vec4>  _colours;
167    mutable unsigned int    _pos;
168
169    inline void luminance(float& l) const { l = _colours[_pos++].r(); }
170    inline void alpha(float& a) const { a = _colours[_pos++].a(); }
171    inline void luminance_alpha(float& l,float& a) const { l = _colours[_pos].r(); a = _colours[_pos++].a(); }
172    inline void rgb(float& r,float& g,float& b) const { r = _colours[_pos].r(); g = _colours[_pos].g(); b = _colours[_pos].b(); }
173    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(); }
174};
175
176void clampToNearestValidPowerOfTwo(int& sizeX, int& sizeY, int& sizeZ, int s_maximumTextureSize, int t_maximumTextureSize, int r_maximumTextureSize)
177{
178    // compute nearest powers of two for each axis.
179    int s_nearestPowerOfTwo = 1;
180    while(s_nearestPowerOfTwo<sizeX && s_nearestPowerOfTwo<s_maximumTextureSize) s_nearestPowerOfTwo*=2;
181
182    int t_nearestPowerOfTwo = 1;
183    while(t_nearestPowerOfTwo<sizeY && t_nearestPowerOfTwo<t_maximumTextureSize) t_nearestPowerOfTwo*=2;
184
185    int r_nearestPowerOfTwo = 1;
186    while(r_nearestPowerOfTwo<sizeZ && r_nearestPowerOfTwo<r_maximumTextureSize) r_nearestPowerOfTwo*=2;
187
188    sizeX = s_nearestPowerOfTwo;
189    sizeY = t_nearestPowerOfTwo;
190    sizeZ = r_nearestPowerOfTwo;
191}
192
193osg::Image* readRaw(int sizeX, int sizeY, int sizeZ, int numberBytesPerComponent, int numberOfComponents, const std::string& endian, const std::string& raw_filename)
194{
195    osgDB::ifstream fin(raw_filename.c_str(), std::ifstream::binary);
196    if (!fin) return 0;
197
198    GLenum pixelFormat;
199    switch(numberOfComponents)
200    {
201        case 1 : pixelFormat = GL_LUMINANCE; break;
202        case 2 : pixelFormat = GL_LUMINANCE_ALPHA; break;
203        case 3 : pixelFormat = GL_RGB; break;
204        case 4 : pixelFormat = GL_RGBA; break;
205        default :
206            osg::notify(osg::NOTICE)<<"Error: numberOfComponents="<<numberOfComponents<<" not supported, only 1,2,3 or 4 are supported."<<std::endl;
207            return 0;
208    }
209
210
211    GLenum dataType;
212    switch(numberBytesPerComponent)
213    {
214        case 1 : dataType = GL_UNSIGNED_BYTE; break;
215        case 2 : dataType = GL_UNSIGNED_SHORT; break;
216        case 4 : dataType = GL_UNSIGNED_INT; break;
217        default :
218            osg::notify(osg::NOTICE)<<"Error: numberBytesPerComponent="<<numberBytesPerComponent<<" not supported, only 1,2 or 4 are supported."<<std::endl;
219            return 0;
220    }
221
222    int s_maximumTextureSize=256, t_maximumTextureSize=256, r_maximumTextureSize=256;
223
224    int sizeS = sizeX;
225    int sizeT = sizeY;
226    int sizeR = sizeZ;
227    clampToNearestValidPowerOfTwo(sizeS, sizeT, sizeR, s_maximumTextureSize, t_maximumTextureSize, r_maximumTextureSize);
228
229    osg::ref_ptr<osg::Image> image = new osg::Image;
230    image->allocateImage(sizeS, sizeT, sizeR, pixelFormat, dataType);
231
232
233    bool endianSwap = (osg::getCpuByteOrder()==osg::BigEndian) ? (endian!="big") : (endian=="big");
234
235    unsigned int r_offset = (sizeZ<sizeR) ? sizeR/2 - sizeZ/2 : 0;
236
237    int offset = endianSwap ? numberBytesPerComponent : 0;
238    int delta = endianSwap ? -1 : 1;
239    for(int r=0;r<sizeZ;++r)
240    {
241        for(int t=0;t<sizeY;++t)
242        {
243            char* data = (char*) image->data(0,t,r+r_offset);
244            for(int s=0;s<sizeX;++s)
245            {
246                if (!fin) return 0;
247
248                for(int c=0;c<numberOfComponents;++c)
249                {
250                    char* ptr = data+offset;
251                    for(int b=0;b<numberBytesPerComponent;++b)
252                    {
253                        fin.read((char*)ptr, 1);
254                        ptr += delta;
255                    }
256                    data += numberBytesPerComponent;
257                }
258            }
259        }
260    }
261
262
263    // normalise texture
264    {
265        // compute range of values
266        osg::Vec4 minValue, maxValue;
267        osg::computeMinMax(image.get(), minValue, maxValue);
268        osg::modifyImage(image.get(),ScaleOperator(1.0f/maxValue.r()));
269    }
270
271
272    fin.close();
273
274    if (dataType!=GL_UNSIGNED_BYTE)
275    {
276        // need to convert to ubyte
277
278        osg::ref_ptr<osg::Image> new_image = new osg::Image;
279        new_image->allocateImage(sizeS, sizeT, sizeR, pixelFormat, GL_UNSIGNED_BYTE);
280
281        RecordRowOperator readOp(sizeS);
282        WriteRowOperator writeOp;
283
284        for(int r=0;r<sizeR;++r)
285        {
286            for(int t=0;t<sizeT;++t)
287            {
288                // reset the indices to beginning
289                readOp._pos = 0;
290                writeOp._pos = 0;
291
292                // read the pixels into readOp's _colour array
293                osg::readRow(sizeS, pixelFormat, dataType, image->data(0,t,r), readOp);
294
295                // pass readOp's _colour array contents over to writeOp (note this is just a pointer swap).
296                writeOp._colours.swap(readOp._colours);
297
298                osg::modifyRow(sizeS, pixelFormat, GL_UNSIGNED_BYTE, new_image->data(0,t,r), writeOp);
299
300                // return readOp's _colour array contents back to its rightful owner.
301                writeOp._colours.swap(readOp._colours);
302            }
303        }
304
305        image = new_image;
306    }
307
308    return image.release();
309
310
311}
312
313enum ColourSpaceOperation
314{
315    NO_COLOUR_SPACE_OPERATION,
316    MODULATE_ALPHA_BY_LUMINANCE,
317    MODULATE_ALPHA_BY_COLOUR,
318    REPLACE_ALPHA_WITH_LUMINANCE,
319    REPLACE_RGB_WITH_LUMINANCE
320};
321
322struct ModulateAlphaByColourOperator
323{
324    ModulateAlphaByColourOperator(const osg::Vec4& colour):_colour(colour) { _lum = _colour.length(); }
325
326    osg::Vec4 _colour;
327    float _lum;
328
329    inline void luminance(float&) const {}
330    inline void alpha(float&) const {}
331    inline void luminance_alpha(float& l,float& a) const { a*= l*_lum; }
332    inline void rgb(float&,float&,float&) const {}
333    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()); }
334};
335
336struct ReplaceAlphaWithLuminanceOperator
337{
338    ReplaceAlphaWithLuminanceOperator() {}
339
340    inline void luminance(float&) const {}
341    inline void alpha(float&) const {}
342    inline void luminance_alpha(float& l,float& a) const { a= l; }
343    inline void rgb(float&,float&,float&) const { }
344    inline void rgba(float& r,float& g,float& b,float& a) const { float l = (r+g+b)*0.3333333; a = l; }
345};
346
347osg::Image* doColourSpaceConversion(ColourSpaceOperation op, osg::Image* image, osg::Vec4& colour)
348{
349    switch(op)
350    {
351        case (MODULATE_ALPHA_BY_LUMINANCE):
352        {
353            std::cout<<"doing conversion MODULATE_ALPHA_BY_LUMINANCE"<<std::endl;
354            osg::modifyImage(image,ModulateAlphaByLuminanceOperator());
355            return image;
356        }
357        case (MODULATE_ALPHA_BY_COLOUR):
358        {
359            std::cout<<"doing conversion MODULATE_ALPHA_BY_COLOUR"<<std::endl;
360            osg::modifyImage(image,ModulateAlphaByColourOperator(colour));
361            return image;
362        }
363        case (REPLACE_ALPHA_WITH_LUMINANCE):
364        {
365            std::cout<<"doing conversion REPLACE_ALPHA_WITH_LUMINANCE"<<std::endl;
366            osg::modifyImage(image,ReplaceAlphaWithLuminanceOperator());
367            return image;
368        }
369        case (REPLACE_RGB_WITH_LUMINANCE):
370        {
371            std::cout<<"doing conversion REPLACE_ALPHA_WITH_LUMINANCE"<<std::endl;
372            osg::Image* newImage = new osg::Image;
373            newImage->allocateImage(image->s(), image->t(), image->r(), GL_LUMINANCE, image->getDataType());
374            osg::copyImage(image, 0, 0, 0, image->s(), image->t(), image->r(),
375                        newImage, 0, 0, 0, false);
376            return newImage;
377        }
378        default:
379            return image;
380    }
381}
382
383
384osg::TransferFunction1D* readTransferFunctionFile(const std::string& filename, float colorScale=1.0f)
385{
386    std::string foundFile = osgDB::findDataFile(filename);
387    if (foundFile.empty())
388    {
389        std::cout<<"Error: could not find transfer function file : "<<filename<<std::endl;
390        return 0;
391    }
392
393    std::cout<<"Reading transfer function "<<filename<<std::endl;
394
395    osg::TransferFunction1D::ColorMap colorMap;
396    osgDB::ifstream fin(foundFile.c_str());
397    while(fin)
398    {
399        float value, red, green, blue, alpha;
400        fin >> value >> red >> green >> blue >> alpha;
401        if (fin)
402        {
403            std::cout<<"value = "<<value<<" ("<<red<<", "<<green<<", "<<blue<<", "<<alpha<<")"<<std::endl;
404            colorMap[value] = osg::Vec4(red*colorScale,green*colorScale,blue*colorScale,alpha*colorScale);
405        }
406    }
407
408    if (colorMap.empty())
409    {
410        std::cout<<"Error: No values read from transfer function file: "<<filename<<std::endl;
411        return 0;
412    }
413
414    osg::TransferFunction1D* tf = new osg::TransferFunction1D;
415    tf->assign(colorMap);
416
417    return tf;
418}
419
420
421class TestSupportOperation: public osg::GraphicsOperation
422{
423public:
424
425    TestSupportOperation():
426        osg::GraphicsOperation("TestSupportOperation",false),
427        supported(true),
428        errorMessage(),
429        maximumTextureSize(256) {}
430
431    virtual void operator () (osg::GraphicsContext* gc)
432    {
433        OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mutex);
434
435        glGetIntegerv( GL_MAX_3D_TEXTURE_SIZE, &maximumTextureSize );
436
437        osg::notify(osg::NOTICE)<<"Max texture size="<<maximumTextureSize<<std::endl;
438    }
439
440    OpenThreads::Mutex  mutex;
441    bool                supported;
442    std::string         errorMessage;
443    GLint               maximumTextureSize;
444};
445
446class DraggerVolumeTileCallback : public osgManipulator::DraggerCallback
447{
448public:
449
450    DraggerVolumeTileCallback(osgVolume::VolumeTile* volume, osgVolume::Locator* locator):
451        _volume(volume),
452        _locator(locator) {}
453
454
455    virtual bool receive(const osgManipulator::MotionCommand& command);
456
457
458    osg::observer_ptr<osgVolume::VolumeTile>    _volume;
459    osg::ref_ptr<osgVolume::Locator>            _locator;
460
461    osg::Matrix _startMotionMatrix;
462
463    osg::Matrix _localToWorld;
464    osg::Matrix _worldToLocal;
465
466};
467
468bool DraggerVolumeTileCallback::receive(const osgManipulator::MotionCommand& command)
469{
470    if (!_locator) return false;
471
472    switch (command.getStage())
473    {
474        case osgManipulator::MotionCommand::START:
475        {
476            // Save the current matrix
477            _startMotionMatrix = _locator->getTransform();
478
479            // Get the LocalToWorld and WorldToLocal matrix for this node.
480            osg::NodePath nodePathToRoot;
481            osgManipulator::computeNodePathToRoot(*_volume,nodePathToRoot);
482            _localToWorld = _startMotionMatrix * osg::computeLocalToWorld(nodePathToRoot);
483            _worldToLocal = osg::Matrix::inverse(_localToWorld);
484
485            return true;
486        }
487        case osgManipulator::MotionCommand::MOVE:
488        {
489            // Transform the command's motion matrix into local motion matrix.
490            osg::Matrix localMotionMatrix = _localToWorld * command.getWorldToLocal()
491                                            * command.getMotionMatrix()
492                                            * command.getLocalToWorld() * _worldToLocal;
493
494            // Transform by the localMotionMatrix
495            _locator->setTransform(localMotionMatrix * _startMotionMatrix);
496
497            // osg::notify(osg::NOTICE)<<"New locator matrix "<<_locator->getTransform()<<std::endl;
498
499            return true;
500        }
501        case osgManipulator::MotionCommand::FINISH:
502        {
503            return true;
504        }
505        case osgManipulator::MotionCommand::NONE:
506        default:
507            return false;
508    }
509}
510
511int main( int argc, char **argv )
512{
513    // use an ArgumentParser object to manage the program arguments.
514    osg::ArgumentParser arguments(&argc,argv);
515
516    // set up the usage document, in case we need to print out how to use this program.
517    arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates use of 3D textures.");
518    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
519    arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
520    arguments.getApplicationUsage()->addCommandLineOption("--images [filenames]","Specify a stack of 2d images to build the 3d volume from.");
521    arguments.getApplicationUsage()->addCommandLineOption("--shader","Use OpenGL Shading Language. (default)");
522    arguments.getApplicationUsage()->addCommandLineOption("--no-shader","Disable use of OpenGL Shading Language.");
523    arguments.getApplicationUsage()->addCommandLineOption("--gpu-tf","Aply the transfer function on the GPU. (default)");
524    arguments.getApplicationUsage()->addCommandLineOption("--cpu-tf","Apply the transfer function on the CPU.");
525    arguments.getApplicationUsage()->addCommandLineOption("--mip","Use Maximum Intensity Projection (MIP) filtering.");
526    arguments.getApplicationUsage()->addCommandLineOption("--isosurface","Use Iso surface render.");
527    arguments.getApplicationUsage()->addCommandLineOption("--light","Use normals computed on the GPU to render a lit volume.");
528    arguments.getApplicationUsage()->addCommandLineOption("-n","Use normals computed on the GPU to render a lit volume.");
529    arguments.getApplicationUsage()->addCommandLineOption("--xSize <size>","Relative width of rendered brick.");
530    arguments.getApplicationUsage()->addCommandLineOption("--ySize <size>","Relative length of rendered brick.");
531    arguments.getApplicationUsage()->addCommandLineOption("--zSize <size>","Relative height of rendered brick.");
532    arguments.getApplicationUsage()->addCommandLineOption("--maxTextureSize <size>","Set the texture maximum resolution in the s,t,r (x,y,z) dimensions.");
533    arguments.getApplicationUsage()->addCommandLineOption("--s_maxTextureSize <size>","Set the texture maximum resolution in the s (x) dimension.");
534    arguments.getApplicationUsage()->addCommandLineOption("--t_maxTextureSize <size>","Set the texture maximum resolution in the t (y) dimension.");
535    arguments.getApplicationUsage()->addCommandLineOption("--r_maxTextureSize <size>","Set the texture maximum resolution in the r (z) dimension.");
536    arguments.getApplicationUsage()->addCommandLineOption("--modulate-alpha-by-luminance","For each pixel multiply the alpha value by the luminance.");
537    arguments.getApplicationUsage()->addCommandLineOption("--replace-alpha-with-luminance","For each pixel set the alpha value to the luminance.");
538    arguments.getApplicationUsage()->addCommandLineOption("--replace-rgb-with-luminance","For each rgb pixel convert to the luminance.");
539    arguments.getApplicationUsage()->addCommandLineOption("--num-components <num>","Set the number of components to in he target image.");
540    arguments.getApplicationUsage()->addCommandLineOption("--no-rescale","Disable the rescaling of the pixel data to 0.0 to 1.0 range");
541    arguments.getApplicationUsage()->addCommandLineOption("--rescale","Enable the rescale of the pixel data to 0.0 to 1.0 range (default).");
542    arguments.getApplicationUsage()->addCommandLineOption("--shift-min-to-zero","Shift the pixel data so min value is 0.0.");
543    arguments.getApplicationUsage()->addCommandLineOption("--sequence-length <num>","Set the length of time that a sequence of images with run for.");
544    arguments.getApplicationUsage()->addCommandLineOption("--sd <num>","Short hand for --sequence-length");
545    arguments.getApplicationUsage()->addCommandLineOption("--sdwm <num>","Set the SampleDensityWhenMovingProperty to specified value");
546    arguments.getApplicationUsage()->addCommandLineOption("--lod","Enable techniques to reduce the level of detail when moving.");
547//    arguments.getApplicationUsage()->addCommandLineOption("--raw <sizeX> <sizeY> <sizeZ> <numberBytesPerComponent> <numberOfComponents> <endian> <filename>","read a raw image data");
548
549    // construct the viewer.
550    osgViewer::Viewer viewer(arguments);
551
552    // add the window size toggle handler
553    viewer.addEventHandler(new osgViewer::WindowSizeHandler);
554
555    {
556        osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
557
558        keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
559
560        osgGA::FlightManipulator* flightManipulator = new osgGA::FlightManipulator();
561        flightManipulator->setYawControlMode(osgGA::FlightManipulator::NO_AUTOMATIC_YAW);
562        keyswitchManipulator->addMatrixManipulator( '2', "Flight", flightManipulator );
563
564        viewer.setCameraManipulator( keyswitchManipulator.get() );
565    }
566
567    // add the stats handler
568    viewer.addEventHandler(new osgViewer::StatsHandler);
569
570    viewer.getCamera()->setClearColor(osg::Vec4(0.0f,0.0f,0.0f,0.0f));
571
572    // if user request help write it out to cout.
573    if (arguments.read("-h") || arguments.read("--help"))
574    {
575        arguments.getApplicationUsage()->write(std::cout);
576        return 1;
577    }
578
579    std::string outputFile;
580    while (arguments.read("-o",outputFile)) {}
581
582
583
584    osg::ref_ptr<osg::TransferFunction1D> transferFunction;
585    std::string tranferFunctionFile;
586    while (arguments.read("--tf",tranferFunctionFile))
587    {
588        transferFunction = readTransferFunctionFile(tranferFunctionFile);
589    }
590    while (arguments.read("--tf-255",tranferFunctionFile))
591    {
592        transferFunction = readTransferFunctionFile(tranferFunctionFile,1.0f/255.0f);
593    }
594
595    while(arguments.read("--test"))
596    {
597        transferFunction = new osg::TransferFunction1D;
598        transferFunction->setColor(0.0, osg::Vec4(1.0,0.0,0.0,0.0));
599        transferFunction->setColor(0.5, osg::Vec4(1.0,1.0,0.0,0.5));
600        transferFunction->setColor(1.0, osg::Vec4(0.0,0.0,1.0,1.0));
601    }
602
603    while(arguments.read("--test2"))
604    {
605        transferFunction = new osg::TransferFunction1D;
606        transferFunction->setColor(0.0, osg::Vec4(1.0,0.0,0.0,0.0));
607        transferFunction->setColor(0.5, osg::Vec4(1.0,1.0,0.0,0.5));
608        transferFunction->setColor(1.0, osg::Vec4(0.0,0.0,1.0,1.0));
609        transferFunction->assign(transferFunction->getColorMap());
610    }
611
612    {
613        // deprecated options
614
615        bool invalidOption = false;
616
617        unsigned int numSlices=500;
618        while (arguments.read("-s",numSlices)) { OSG_NOTICE<<"Warning: -s option no longer supported."<<std::endl; invalidOption = true; }
619
620        float sliceEnd=1.0f;
621        while (arguments.read("--clip",sliceEnd)) { OSG_NOTICE<<"Warning: --clip option no longer supported."<<std::endl; invalidOption = true; }
622
623
624        if (invalidOption) return 1;
625    }
626
627    float xMultiplier=1.0f;
628    while (arguments.read("--xMultiplier",xMultiplier)) {}
629
630    float yMultiplier=1.0f;
631    while (arguments.read("--yMultiplier",yMultiplier)) {}
632
633    float zMultiplier=1.0f;
634    while (arguments.read("--zMultiplier",zMultiplier)) {}
635
636
637    float alphaFunc=0.02f;
638    while (arguments.read("--alphaFunc",alphaFunc)) {}
639
640
641
642    ShadingModel shadingModel = Standard;
643    while(arguments.read("--mip")) shadingModel =  MaximumIntensityProjection;
644
645    while (arguments.read("--isosurface") || arguments.read("--iso-surface")) shadingModel = Isosurface;
646
647    while (arguments.read("--light") || arguments.read("-n")) shadingModel = Light;
648
649    float xSize=0.0f, ySize=0.0f, zSize=0.0f;
650    while (arguments.read("--xSize",xSize)) {}
651    while (arguments.read("--ySize",ySize)) {}
652    while (arguments.read("--zSize",zSize)) {}
653
654    osg::ref_ptr<TestSupportOperation> testSupportOperation = new TestSupportOperation;
655    viewer.setRealizeOperation(testSupportOperation.get());
656
657    viewer.realize();
658
659    int maximumTextureSize = testSupportOperation->maximumTextureSize;
660    int s_maximumTextureSize = maximumTextureSize;
661    int t_maximumTextureSize = maximumTextureSize;
662    int r_maximumTextureSize = maximumTextureSize;
663    while(arguments.read("--maxTextureSize",maximumTextureSize))
664    {
665        s_maximumTextureSize = maximumTextureSize;
666        t_maximumTextureSize = maximumTextureSize;
667        r_maximumTextureSize = maximumTextureSize;
668    }
669    while(arguments.read("--s_maxTextureSize",s_maximumTextureSize)) {}
670    while(arguments.read("--t_maxTextureSize",t_maximumTextureSize)) {}
671    while(arguments.read("--r_maxTextureSize",r_maximumTextureSize)) {}
672
673    // set up colour space operation.
674    ColourSpaceOperation colourSpaceOperation = NO_COLOUR_SPACE_OPERATION;
675    osg::Vec4 colourModulate(0.25f,0.25f,0.25f,0.25f);
676    while(arguments.read("--modulate-alpha-by-luminance")) { colourSpaceOperation = MODULATE_ALPHA_BY_LUMINANCE; }
677    while(arguments.read("--modulate-alpha-by-colour", colourModulate.x(),colourModulate.y(),colourModulate.z(),colourModulate.w() )) { colourSpaceOperation = MODULATE_ALPHA_BY_COLOUR; }
678    while(arguments.read("--replace-alpha-with-luminance")) { colourSpaceOperation = REPLACE_ALPHA_WITH_LUMINANCE; }
679    while(arguments.read("--replace-rgb-with-luminance")) { colourSpaceOperation = REPLACE_RGB_WITH_LUMINANCE; }
680
681
682    enum RescaleOperation
683    {
684        NO_RESCALE,
685        RESCALE_TO_ZERO_TO_ONE_RANGE,
686        SHIFT_MIN_TO_ZERO
687    };
688
689    RescaleOperation rescaleOperation = RESCALE_TO_ZERO_TO_ONE_RANGE;
690    while(arguments.read("--no-rescale")) rescaleOperation = NO_RESCALE;
691    while(arguments.read("--rescale")) rescaleOperation = RESCALE_TO_ZERO_TO_ONE_RANGE;
692    while(arguments.read("--shift-min-to-zero")) rescaleOperation = SHIFT_MIN_TO_ZERO;
693
694
695    bool resizeToPowerOfTwo = false;
696
697    unsigned int numComponentsDesired = 0;
698    while(arguments.read("--num-components", numComponentsDesired)) {}
699
700    bool useManipulator = false;
701    while(arguments.read("--manipulator") || arguments.read("-m")) { useManipulator = true; }
702
703
704    bool useShader = true;
705    while(arguments.read("--shader")) { useShader = true; }
706    while(arguments.read("--no-shader")) { useShader = false; }
707
708    bool gpuTransferFunction = true;
709    while(arguments.read("--gpu-tf")) { gpuTransferFunction = true; }
710    while(arguments.read("--cpu-tf")) { gpuTransferFunction = false; }
711
712    double sampleDensityWhenMoving = 0.0;
713    while(arguments.read("--sdwm", sampleDensityWhenMoving)) {}
714
715    while(arguments.read("--lod")) { sampleDensityWhenMoving = 0.02; }
716
717    double sequenceLength = 10.0;
718    while(arguments.read("--sequence-duration", sequenceLength) ||
719          arguments.read("--sd", sequenceLength)) {}
720
721    typedef std::list< osg::ref_ptr<osg::Image> > Images;
722    Images images;
723
724
725    std::string vh_filename;
726    while (arguments.read("--vh", vh_filename))
727    {
728        std::string raw_filename, transfer_filename;
729        int xdim(0), ydim(0), zdim(0);
730
731        osgDB::ifstream header(vh_filename.c_str());
732        if (header)
733        {
734            header >> raw_filename >> transfer_filename >> xdim >> ydim >> zdim >> xSize >> ySize >> zSize;
735        }
736
737        if (xdim*ydim*zdim==0)
738        {
739            std::cout<<"Error in reading volume header "<<vh_filename<<std::endl;
740            return 1;
741        }
742
743        if (!raw_filename.empty())
744        {
745            images.push_back(readRaw(xdim, ydim, zdim, 1, 1, "little", raw_filename));
746        }
747
748        if (!transfer_filename.empty())
749        {
750            osgDB::ifstream fin(transfer_filename.c_str());
751            if (fin)
752            {
753                osg::TransferFunction1D::ColorMap colorMap;
754                float value = 0.0;
755                while(fin && value<=1.0)
756                {
757                    float red, green, blue, alpha;
758                    fin >> red >> green >> blue >> alpha;
759                    if (fin)
760                    {
761                        colorMap[value] = osg::Vec4(red/255.0f,green/255.0f,blue/255.0f,alpha/255.0f);
762                        std::cout<<"value = "<<value<<" ("<<red<<", "<<green<<", "<<blue<<", "<<alpha<<")";
763                        std::cout<<"  ("<<colorMap[value]<<")"<<std::endl;
764                    }
765                    value += 1/255.0;
766                }
767
768                if (colorMap.empty())
769                {
770                    std::cout<<"Error: No values read from transfer function file: "<<transfer_filename<<std::endl;
771                    return 0;
772                }
773
774                transferFunction = new osg::TransferFunction1D;
775                transferFunction->assign(colorMap);
776            }
777        }
778
779    }
780
781
782    int sizeX, sizeY, sizeZ, numberBytesPerComponent, numberOfComponents;
783    std::string endian, raw_filename;
784    while (arguments.read("--raw", sizeX, sizeY, sizeZ, numberBytesPerComponent, numberOfComponents, endian, raw_filename))
785    {
786        images.push_back(readRaw(sizeX, sizeY, sizeZ, numberBytesPerComponent, numberOfComponents, endian, raw_filename));
787    }
788
789    int images_pos = arguments.find("--images");
790    if (images_pos>=0)
791    {
792        osg::ImageList imageList;
793        int pos=images_pos+1;
794        for(;pos<arguments.argc() && !arguments.isOption(pos);++pos)
795        {
796            std::string arg(arguments[pos]);
797            if (arg.find('*') != std::string::npos)
798            {
799                osgDB::DirectoryContents contents = osgDB::expandWildcardsInFilename(arg);
800                for (unsigned int i = 0; i < contents.size(); ++i)
801                {
802                    osg::Image *image = osgDB::readImageFile( contents[i] );
803
804                    if(image)
805                    {
806                        OSG_NOTICE<<"Read osg::Image FileName::"<<image->getFileName()<<", pixelFormat=0x"<<std::hex<<image->getPixelFormat()<<std::dec<<", s="<<image->s()<<", t="<<image->t()<<", r="<<image->r()<<std::endl;
807                        imageList.push_back(image);
808                    }
809                }
810            }
811            else
812            {
813                // not an option so assume string is a filename.
814                osg::Image *image = osgDB::readImageFile( arguments[pos] );
815
816                if(image)
817                {
818                    OSG_NOTICE<<"Read osg::Image FileName::"<<image->getFileName()<<", pixelFormat=0x"<<std::hex<<image->getPixelFormat()<<std::dec<<", s="<<image->s()<<", t="<<image->t()<<", r="<<image->r()<<std::endl;
819                    imageList.push_back(image);
820                }
821            }
822        }
823
824        arguments.remove(images_pos, pos-images_pos);
825
826        // pack the textures into a single texture.
827        osg::Image* image = createTexture3D(imageList, numComponentsDesired, s_maximumTextureSize, t_maximumTextureSize, r_maximumTextureSize, resizeToPowerOfTwo);
828        if (image)
829        {
830            images.push_back(image);
831        }
832    }
833
834
835    // any option left unread are converted into errors to write out later.
836    arguments.reportRemainingOptionsAsUnrecognized();
837
838    // report any errors if they have occurred when parsing the program arguments.
839    if (arguments.errors())
840    {
841        arguments.writeErrorMessages(std::cout);
842        return 1;
843    }
844
845
846    // assume remaining arguments are file names of textures.
847    for(int pos=1;pos<arguments.argc();++pos)
848    {
849        if (!arguments.isOption(pos))
850        {
851            std::string filename = arguments[pos];
852            if (osgDB::getLowerCaseFileExtension(filename)=="dicom")
853            {
854                // not an option so assume string is a filename.
855                osg::Image* image = osgDB::readImageFile(filename);
856                if (image)
857                {
858                    images.push_back(image);
859                }
860            }
861            else
862            {
863                osgDB::FileType fileType = osgDB::fileType(filename);
864                if (fileType == osgDB::FILE_NOT_FOUND)
865                {
866                    filename = osgDB::findDataFile(filename);
867                    fileType = osgDB::fileType(filename);
868                }
869
870                if (fileType == osgDB::DIRECTORY)
871                {
872                    osg::Image* image = osgDB::readImageFile(filename+".dicom");
873                    if (image) images.push_back(image);
874                }
875                else if (fileType == osgDB::REGULAR_FILE)
876                {
877                    // not an option so assume string is a filename.
878                    osg::Image* image = osgDB::readImageFile( filename );
879                    if (image) images.push_back(image);
880                }
881                else
882                {
883                    osg::notify(osg::NOTICE)<<"Error: could not find file: "<<filename<<std::endl;
884                    return 1;
885                }
886            }
887        }
888    }
889
890    if (images.empty())
891    {
892        std::cout<<"No model loaded, please specify and volumetric image file on the command line."<<std::endl;
893        return 1;
894    }
895
896
897    Images::iterator sizeItr = images.begin();
898    int image_s = (*sizeItr)->s();
899    int image_t = (*sizeItr)->t();
900    int image_r = (*sizeItr)->r();
901    ++sizeItr;
902
903    for(;sizeItr != images.end(); ++sizeItr)
904    {
905        if ((*sizeItr)->s() != image_s ||
906            (*sizeItr)->t() != image_t ||
907            (*sizeItr)->r() != image_r)
908        {
909            std::cout<<"Images in sequence are not of the same dimensions."<<std::endl;
910            return 1;
911        }
912    }
913
914
915    osg::ref_ptr<osgVolume::ImageDetails> details = dynamic_cast<osgVolume::ImageDetails*>(images.front()->getUserData());
916    osg::ref_ptr<osg::RefMatrix> matrix = details ? details->getMatrix() : dynamic_cast<osg::RefMatrix*>(images.front()->getUserData());
917
918    if (!matrix)
919    {
920        if (xSize==0.0) xSize = static_cast<float>(image_s);
921        if (ySize==0.0) ySize = static_cast<float>(image_t);
922        if (zSize==0.0) zSize = static_cast<float>(image_r);
923
924        matrix = new osg::RefMatrix(xSize, 0.0,   0.0,   0.0,
925                                    0.0,   ySize, 0.0,   0.0,
926                                    0.0,   0.0,   zSize, 0.0,
927                                    0.0,   0.0,   0.0,   1.0);
928    }
929
930
931    if (xMultiplier!=1.0 || yMultiplier!=1.0 || zMultiplier!=1.0)
932    {
933        matrix->postMultScale(osg::Vec3d(fabs(xMultiplier), fabs(yMultiplier), fabs(zMultiplier)));
934    }
935
936    osg::Vec4 minValue(FLT_MAX, FLT_MAX, FLT_MAX, FLT_MAX);
937    osg::Vec4 maxValue(-FLT_MAX, -FLT_MAX, -FLT_MAX, -FLT_MAX);
938    bool computeMinMax = false;
939    for(Images::iterator itr = images.begin();
940        itr != images.end();
941        ++itr)
942    {
943        osg::Vec4 localMinValue, localMaxValue;
944        if (osg::computeMinMax(itr->get(), localMinValue, localMaxValue))
945        {
946            if (localMinValue.r()<minValue.r()) minValue.r() = localMinValue.r();
947            if (localMinValue.g()<minValue.g()) minValue.g() = localMinValue.g();
948            if (localMinValue.b()<minValue.b()) minValue.b() = localMinValue.b();
949            if (localMinValue.a()<minValue.a()) minValue.a() = localMinValue.a();
950
951            if (localMaxValue.r()>maxValue.r()) maxValue.r() = localMaxValue.r();
952            if (localMaxValue.g()>maxValue.g()) maxValue.g() = localMaxValue.g();
953            if (localMaxValue.b()>maxValue.b()) maxValue.b() = localMaxValue.b();
954            if (localMaxValue.a()>maxValue.a()) maxValue.a() = localMaxValue.a();
955
956            osg::notify(osg::NOTICE)<<"  ("<<localMinValue<<") ("<<localMaxValue<<") "<<(*itr)->getFileName()<<std::endl;
957
958            computeMinMax = true;
959        }
960    }
961
962    if (computeMinMax)
963    {
964        osg::notify(osg::NOTICE)<<"Min value "<<minValue<<std::endl;
965        osg::notify(osg::NOTICE)<<"Max value "<<maxValue<<std::endl;
966
967        float minComponent = minValue[0];
968        minComponent = osg::minimum(minComponent,minValue[1]);
969        minComponent = osg::minimum(minComponent,minValue[2]);
970        minComponent = osg::minimum(minComponent,minValue[3]);
971
972        float maxComponent = maxValue[0];
973        maxComponent = osg::maximum(maxComponent,maxValue[1]);
974        maxComponent = osg::maximum(maxComponent,maxValue[2]);
975        maxComponent = osg::maximum(maxComponent,maxValue[3]);
976
977#if 0
978        switch(rescaleOperation)
979        {
980            case(NO_RESCALE):
981                break;
982
983            case(RESCALE_TO_ZERO_TO_ONE_RANGE):
984            {
985                float scale = 0.99f/(maxComponent-minComponent);
986                float offset = -minComponent * scale;
987
988                for(Images::iterator itr = images.begin();
989                    itr != images.end();
990                    ++itr)
991                {
992                    osg::offsetAndScaleImage(itr->get(),
993                        osg::Vec4(offset, offset, offset, offset),
994                        osg::Vec4(scale, scale, scale, scale));
995                }
996                break;
997            }
998            case(SHIFT_MIN_TO_ZERO):
999            {
1000                float offset = -minComponent;
1001
1002                for(Images::iterator itr = images.begin();
1003                    itr != images.end();
1004                    ++itr)
1005                {
1006                    osg::offsetAndScaleImage(itr->get(),
1007                        osg::Vec4(offset, offset, offset, offset),
1008                        osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f));
1009                }
1010                break;
1011            }
1012        };
1013#endif
1014    }
1015
1016
1017    if (colourSpaceOperation!=NO_COLOUR_SPACE_OPERATION)
1018    {
1019        for(Images::iterator itr = images.begin();
1020            itr != images.end();
1021            ++itr)
1022        {
1023            (*itr) = doColourSpaceConversion(colourSpaceOperation, itr->get(), colourModulate);
1024        }
1025    }
1026
1027    if (!gpuTransferFunction && transferFunction.valid())
1028    {
1029        for(Images::iterator itr = images.begin();
1030            itr != images.end();
1031            ++itr)
1032        {
1033            *itr = osgVolume::applyTransferFunction(itr->get(), transferFunction.get());
1034        }
1035    }
1036
1037    osg::ref_ptr<osg::Image> image_3d = 0;
1038
1039    if (images.size()==1)
1040    {
1041        osg::notify(osg::NOTICE)<<"Single image "<<images.size()<<" volumes."<<std::endl;
1042        image_3d = images.front();
1043    }
1044    else
1045    {
1046        osg::notify(osg::NOTICE)<<"Creating sequence of "<<images.size()<<" volumes."<<std::endl;
1047
1048        osg::ref_ptr<osg::ImageSequence> imageSequence = new osg::ImageSequence;
1049        imageSequence->setLength(sequenceLength);
1050        image_3d = imageSequence.get();
1051        for(Images::iterator itr = images.begin();
1052            itr != images.end();
1053            ++itr)
1054        {
1055            imageSequence->addImage(itr->get());
1056        }
1057        imageSequence->play();
1058    }
1059
1060    osg::ref_ptr<osgVolume::Volume> volume = new osgVolume::Volume;
1061    osg::ref_ptr<osgVolume::VolumeTile> tile = new osgVolume::VolumeTile;
1062    volume->addChild(tile.get());
1063
1064    osg::ref_ptr<osgVolume::ImageLayer> layer = new osgVolume::ImageLayer(image_3d.get());
1065
1066    if (details)
1067    {
1068        layer->setTexelOffset(details->getTexelOffset());
1069        layer->setTexelScale(details->getTexelScale());
1070    }
1071
1072    switch(rescaleOperation)
1073    {
1074        case(NO_RESCALE):
1075            break;
1076
1077        case(RESCALE_TO_ZERO_TO_ONE_RANGE):
1078        {
1079            layer->rescaleToZeroToOneRange();
1080            break;
1081        }
1082        case(SHIFT_MIN_TO_ZERO):
1083        {
1084            layer->translateMinToZero();
1085            break;
1086        }
1087    };
1088
1089    if (xMultiplier<0.0 || yMultiplier<0.0 || zMultiplier<0.0)
1090    {
1091        layer->setLocator(new osgVolume::Locator(
1092            osg::Matrix::translate(xMultiplier<0.0 ? -1.0 : 0.0, yMultiplier<0.0 ? -1.0 : 0.0, zMultiplier<0.0 ? -1.0 : 0.0) *
1093            osg::Matrix::scale(xMultiplier<0.0 ? -1.0 : 1.0, yMultiplier<0.0 ? -1.0 : 1.0, zMultiplier<0.0 ? -1.0 : 1.0) *
1094            (*matrix)
1095            ));;
1096    }
1097    else
1098    {
1099        layer->setLocator(new osgVolume::Locator(*matrix));
1100    }
1101    tile->setLocator(new osgVolume::Locator(*matrix));
1102
1103    tile->setLayer(layer.get());
1104
1105    tile->setEventCallback(new osgVolume::PropertyAdjustmentCallback());
1106
1107    if (useShader)
1108    {
1109
1110        osgVolume::SwitchProperty* sp = new osgVolume::SwitchProperty;
1111        sp->setActiveProperty(0);
1112
1113        osgVolume::AlphaFuncProperty* ap = new osgVolume::AlphaFuncProperty(alphaFunc);
1114        osgVolume::SampleDensityProperty* sd = new osgVolume::SampleDensityProperty(0.005);
1115        osgVolume::SampleDensityWhenMovingProperty* sdwm = sampleDensityWhenMoving!=0.0 ? new osgVolume::SampleDensityWhenMovingProperty(sampleDensityWhenMoving) : 0;
1116        osgVolume::TransparencyProperty* tp = new osgVolume::TransparencyProperty(1.0);
1117        osgVolume::TransferFunctionProperty* tfp = transferFunction.valid() ? new osgVolume::TransferFunctionProperty(transferFunction.get()) : 0;
1118
1119        {
1120            // Standard
1121            osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
1122            cp->addProperty(ap);
1123            cp->addProperty(sd);
1124            cp->addProperty(tp);
1125            if (sdwm) cp->addProperty(sdwm);
1126            if (tfp) cp->addProperty(tfp);
1127
1128            sp->addProperty(cp);
1129        }
1130
1131        {
1132            // Light
1133            osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
1134            cp->addProperty(ap);
1135            cp->addProperty(sd);
1136            cp->addProperty(tp);
1137            cp->addProperty(new osgVolume::LightingProperty);
1138            if (sdwm) cp->addProperty(sdwm);
1139            if (tfp) cp->addProperty(tfp);
1140
1141            sp->addProperty(cp);
1142        }
1143
1144        {
1145            // Isosurface
1146            osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
1147            cp->addProperty(sd);
1148            cp->addProperty(tp);
1149            cp->addProperty(new osgVolume::IsoSurfaceProperty(alphaFunc));
1150            if (sdwm) cp->addProperty(sdwm);
1151            if (tfp) cp->addProperty(tfp);
1152
1153            sp->addProperty(cp);
1154        }
1155
1156        {
1157            // MaximumIntensityProjection
1158            osgVolume::CompositeProperty* cp = new osgVolume::CompositeProperty;
1159            cp->addProperty(ap);
1160            cp->addProperty(sd);
1161            cp->addProperty(tp);
1162            cp->addProperty(new osgVolume::MaximumIntensityProjectionProperty);
1163            if (sdwm) cp->addProperty(sdwm);
1164            if (tfp) cp->addProperty(tfp);
1165
1166            sp->addProperty(cp);
1167        }
1168
1169        switch(shadingModel)
1170        {
1171            case(Standard):                     sp->setActiveProperty(0); break;
1172            case(Light):                        sp->setActiveProperty(1); break;
1173            case(Isosurface):                   sp->setActiveProperty(2); break;
1174            case(MaximumIntensityProjection):   sp->setActiveProperty(3); break;
1175        }
1176        layer->addProperty(sp);
1177
1178
1179        tile->setVolumeTechnique(new osgVolume::RayTracedTechnique);
1180    }
1181    else
1182    {
1183        layer->addProperty(new osgVolume::AlphaFuncProperty(alphaFunc));
1184        tile->setVolumeTechnique(new osgVolume::FixedFunctionTechnique);
1185    }
1186
1187    if (!outputFile.empty())
1188    {
1189        std::string ext = osgDB::getFileExtension(outputFile);
1190        std::string name_no_ext = osgDB::getNameLessExtension(outputFile);
1191        if (ext=="osg" || ext=="osgt" || ext=="osgx" )
1192        {
1193            if (image_3d.valid())
1194            {
1195                image_3d->setFileName(name_no_ext + ".dds");
1196                osgDB::writeImageFile(*image_3d, image_3d->getFileName());
1197            }
1198            osgDB::writeNodeFile(*volume, outputFile);
1199        }
1200        else if (ext=="ive" || ext=="osgb" )
1201        {
1202            osgDB::writeNodeFile(*volume, outputFile);
1203        }
1204        else if (ext=="dds")
1205        {
1206            osgDB::writeImageFile(*image_3d, outputFile);
1207        }
1208        else
1209        {
1210            std::cout<<"Extension not support for file output, not file written."<<std::endl;
1211        }
1212
1213        return 0;
1214    }
1215
1216    if (volume.valid())
1217    {
1218
1219        osg::ref_ptr<osg::Node> loadedModel = volume.get();
1220
1221        if (useManipulator)
1222        {
1223            osg::ref_ptr<osg::Group> group = new osg::Group;
1224
1225#if 1
1226            osg::ref_ptr<osgManipulator::Dragger> dragger = new osgManipulator::TabBoxDragger;
1227#else
1228            osg::ref_ptr<osgManipulator::Dragger> dragger = new osgManipulator::TrackballDragger();
1229#endif
1230            dragger->setupDefaultGeometry();
1231            dragger->setHandleEvents(true);
1232            dragger->setActivationModKeyMask(osgGA::GUIEventAdapter::MODKEY_SHIFT);
1233            dragger->addDraggerCallback(new DraggerVolumeTileCallback(tile.get(), tile->getLocator()));
1234            dragger->setMatrix(osg::Matrix::translate(0.5,0.5,0.5)*tile->getLocator()->getTransform());
1235
1236
1237            group->addChild(dragger.get());
1238
1239            //dragger->addChild(volume.get());
1240
1241            group->addChild(volume.get());
1242
1243            loadedModel = group;
1244        }
1245
1246
1247        // set the scene to render
1248        viewer.setSceneData(loadedModel.get());
1249
1250        // the the viewers main frame loop
1251        viewer.run();
1252    }
1253
1254    return 0;
1255}
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