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From Jan Peciva, "I am sending improved version of Inventor plugin. Attaching just

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modified files, while GroupSoLOD.h and .cpp was deleted. Please, delete
it from repository, it is not used any longer and I doubt if it is
probably not used for anything meaningful for a while. In the new code,
there is no GroupSoLOD. Please, delete it.

I am using new plugin version for about 1.5 month so I consider it
stable by myself.

List of changes:
- rewritten Inventor state stack
- shaders support
- light attenuation support
- support for reading from stream (readNode(std::istream& fin, options))
- improved grouping node handling (SoSeparator, SoGroup,...)
- fixed transformation bug when two SoShapes/Drawables with different transformations are placed bellow one grouping node
- introduced preprocessing to handle more advanced usage schemes of SoLOD and SoSwitch nodes
- unused code clean up
- improved notify messages
- animation callbacks fixes
- FindInventor.cmake improved finding routines, support for Coin3 and Coin4"
This commit is contained in:
Robert Osfield
2010-01-31 12:55:29 +00:00
parent 874296cbb3
commit b2270e7f38
11 changed files with 1435 additions and 639 deletions
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206
src/osgPlugins/Inventor/ReaderWriterIV.cpp
View File

@@ -1,5 +1,3 @@
#include "ReaderWriterIV.h"
// OSG headers
#include <osg/Notify>
#include <osgDB/FileUtils>
@@ -12,52 +10,132 @@
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/actions/SoWriteAction.h>
#include <Inventor/actions/SoCallbackAction.h>
#ifdef __COIN__
#include <Inventor/VRMLnodes/SoVRMLImageTexture.h>
# include <Inventor/VRMLnodes/SoVRMLImageTexture.h>
#endif
#include "ReaderWriterIV.h"
#include "ConvertFromInventor.h"
#include "GroupSoLOD.h"
#include "ConvertToInventor.h"
// forward declarations of static functions
static void addSearchPaths(const osgDB::FilePathList *searchPaths);
static void removeSearchPaths(const osgDB::FilePathList *searchPaths);
// Register with Registry to instantiate the inventor reader.
REGISTER_OSGPLUGIN(Inventor, ReaderWriterIV)
/**
* Constructor.
* Initializes the ReaderWriterIV.
*/
ReaderWriterIV::ReaderWriterIV()
{
// Set supported extensions and options
supportsExtension("iv","Inventor format");
supportsExtension("wrl","VRML world file");
// Initialize Inventor
initInventor();
}
// Read file and convert to OSG
osgDB::ReaderWriter::ReadResult
ReaderWriterIV::readNode(const std::string& file,
const osgDB::ReaderWriter::Options* options) const
/**
* Initializes Open Inventor.
*/
void ReaderWriterIV::initInventor() const
{
std::string ext = osgDB::getLowerCaseFileExtension(file);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
std::string fileName = osgDB::findDataFile( file, options );
if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
osg::notify(osg::INFO) << "osgDB::ReaderWriterIV::readNode() Reading file "
<< fileName.data() << std::endl;
// Initialize Inventor
SoDB::init();
SoNodeKit::init();
SoInteraction::init();
// Initial GroupSoLOD node
GroupSoLOD::initClass();
#ifdef __COIN__
// Disable delayed loading of VRML textures
SoVRMLImageTexture::setDelayFetchURL(FALSE);
#endif
}
/**
* Read from SoInput and convert to OSG.
* This is a method used by readNode(string,options) and readNode(istream,options).
*/
osgDB::ReaderWriter::ReadResult
ReaderWriterIV::readNodeFromSoInput(SoInput &input,
std::string &fileName, const osgDB::ReaderWriter::Options *options) const
{
// Parse options and add search paths to SoInput
const osgDB::FilePathList *searchPaths = options ? &options->getDatabasePathList() : NULL;
if (options)
addSearchPaths(searchPaths);
// Create the inventor scenegraph by reading from SoInput
SoSeparator* rootIVNode = SoDB::readAll(&input);
// Remove recently appened search paths
if (options)
removeSearchPaths(searchPaths);
// Close the file
input.closeFile();
// Perform conversion
ReadResult result;
if (rootIVNode)
{
rootIVNode->ref();
// Convert the inventor scenegraph to an osg scenegraph
ConvertFromInventor convertIV;
convertIV.preprocess(rootIVNode);
result = convertIV.convert(rootIVNode);
rootIVNode->unref();
} else
result = ReadResult::FILE_NOT_HANDLED;
// Notify
if (result.success()) {
if (fileName.length())
osg::notify(osg::NOTICE) << "osgDB::ReaderWriterIV::readNode() "
<< "File " << fileName.data()
<< " loaded successfully." << std::endl;
else
osg::notify(osg::NOTICE) << "osgDB::ReaderWriterIV::readNode() "
<< "Stream loaded successfully." << std::endl;
} else {
if (fileName.length())
osg::notify(osg::WARN) << "osgDB::ReaderWriterIV::readNode() "
<< "Failed to load file " << fileName.data()
<< "." << std::endl;
else
osg::notify(osg::WARN) << "osgDB::ReaderWriterIV::readNode() "
<< "Failed to load stream." << std::endl;
}
return result;
}
// Read file and convert to OSG
osgDB::ReaderWriter::ReadResult
ReaderWriterIV::readNode(const std::string& file,
const osgDB::ReaderWriter::Options* options) const
{
// Accept extension
std::string ext = osgDB::getLowerCaseFileExtension(file);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
// Find file
std::string fileName = osgDB::findDataFile( file, options );
if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
// Notify
osg::notify(osg::NOTICE) << "osgDB::ReaderWriterIV::readNode() Reading file "
<< fileName.data() << std::endl;
osg::notify(osg::INFO) << "osgDB::ReaderWriterIV::readNode() Inventor version: "
<< SoDB::getVersion() << std::endl;
// Open the file
SoInput input;
@@ -68,23 +146,59 @@ ReaderWriterIV::readNode(const std::string& file,
return ReadResult::ERROR_IN_READING_FILE;
}
// Create the inventor scenegraph from the file
SoSeparator* rootIVNode = SoDB::readAll(&input);
// Perform reading from SoInput
return readNodeFromSoInput(input, fileName, options);
}
// Close the file
input.closeFile();
if (rootIVNode)
{
rootIVNode->ref();
// Convert the inventor scenegraph to an osg scenegraph and return it
ConvertFromInventor convertIV;
ReadResult result = convertIV.convert(rootIVNode);
rootIVNode->unref();
return result;
osgDB::ReaderWriter::ReadResult
ReaderWriterIV::readNode(std::istream& fin,
const osgDB::ReaderWriter::Options* options) const
{
// Notify
osg::notify(osg::NOTICE) << "osgDB::ReaderWriterIV::readNode() "
"Reading from stream." << std::endl;
osg::notify(osg::INFO) << "osgDB::ReaderWriterIV::readNode() "
"Inventor version: " << SoDB::getVersion() << std::endl;
// Open the file
SoInput input;
// Assign istream to SoInput
// note: It seems there is no straightforward way to do that.
// SoInput accepts only FILE by setFilePointer or memory buffer
// by setBuffer. The FILE is dangerous on Windows, since it forces
// the plugin and Inventor DLL to use the same runtime library
// (otherwise there are app crashes).
// The memory buffer seems much better option here, even although
// there will not be a real streaming. However, the model data
// are usually much smaller than textures, so we should not worry
// about it and think how to stream textures instead.
// Get the data to the buffer
size_t bufSize = 126*1024; // let's make it something bellow 128KB
char *buf = (char*)malloc(bufSize);
size_t dataSize = 0;
while (!fin.eof() && fin.good()) {
fin.read(buf+dataSize, bufSize-dataSize);
dataSize += fin.gcount();
if (bufSize == dataSize) {
bufSize *= 2;
buf = (char*)realloc(buf, bufSize);
}
}
input.setBuffer(buf, dataSize);
osg::notify(osg::INFO) << "osgDB::ReaderWriterIV::readNode() "
"Stream size: " << dataSize << std::endl;
return ReadResult::FILE_NOT_HANDLED;
// Perform reading from SoInput
osgDB::ReaderWriter::ReadResult r;
std::string fileName("");
r = readNodeFromSoInput(input, fileName, options);
// clean up and return
free(buf);
return r;
}
@@ -97,11 +211,8 @@ ReaderWriterIV::writeNode(const osg::Node& node, const std::string& fileName,
if (!acceptsExtension(ext)) return WriteResult::FILE_NOT_HANDLED;
bool useVRML1 = !isInventorExtension(osgDB::getFileExtension(fileName));
osg::notify(osg::INFO) << "osgDB::ReaderWriterIV::writeNode() Writing file "
<< fileName.data() << std::endl;
// Initialize Inventor
SoInteraction::init();
osg::notify(osg::NOTICE) << "osgDB::ReaderWriterIV::writeNode() Writing file "
<< fileName.data() << std::endl;
// Convert OSG graph to Inventor graph
ConvertToInventor osg2iv;
@@ -130,3 +241,18 @@ ReaderWriterIV::writeNode(const osg::Node& node, const std::string& fileName,
return WriteResult::FILE_SAVED;
}
static void addSearchPaths(const osgDB::FilePathList *searchPaths)
{
for (int i=searchPaths->size()-1; i>=0; i--)
SoInput::addDirectoryFirst(searchPaths->operator[](i).c_str());
}
static void removeSearchPaths(const osgDB::FilePathList *searchPaths)
{
for (int i=0, c=searchPaths->size(); i<c; i++)
SoInput::addDirectoryFirst(searchPaths->operator[](i).c_str());
}