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f1138fa6849bcde8570cd4580ad2eefde34908e7
OpenSceneGraph/src/osgDB/ReadFile.cpp
Robert Osfield 83f6f13914 Added --file-cache directoryname command line option support to readNodeFiles(ArgumentParser&) 
to make it easier to specify a local file cache, in place of the default OSG_FILE_CACHE
env var.
2008-05-13 14:08:32 +00:00

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#include <osg/Notify>
#include <osg/Object>
#include <osg/Image>
#include <osg/Shader>
#include <osg/ImageStream>
#include <osg/Node>
#include <osg/Group>
#include <osg/Geode>
#include <osg/ShapeDrawable>
#include <osg/Geometry>
#include <osg/Texture2D>
#include <osg/TextureRectangle>
#include <osgDB/Registry>
#include <osgDB/ReadFile>
using namespace osg;
using namespace osgDB;
Object* osgDB::readObjectFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readObject(filename,options);
if (rr.validObject()) return rr.takeObject();
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
Image* osgDB::readImageFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readImage(filename,options);
if (rr.validImage()) return rr.takeImage();
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
Shader* osgDB::readShaderFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readShader(filename,options);
if (rr.validShader()) return rr.takeShader();
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
HeightField* osgDB::readHeightFieldFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readHeightField(filename,options);
if (rr.validHeightField()) return rr.takeHeightField();
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
Node* osgDB::readNodeFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readNode(filename,options);
if (rr.validNode()) return rr.takeNode();
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
Node* osgDB::readNodeFiles(std::vector<std::string>& commandLine,const ReaderWriter::Options* options)
{
typedef std::vector<osg::Node*> NodeList;
NodeList nodeList;
// note currently doesn't delete the loaded file entries from the command line yet...
for(std::vector<std::string>::iterator itr=commandLine.begin();
itr!=commandLine.end();
++itr)
{
if ((*itr)[0]!='-')
{
// not an option so assume string is a filename.
osg::Node *node = osgDB::readNodeFile( *itr , options );
if( node != (osg::Node *)0L )
{
if (node->getName().empty()) node->setName( *itr );
nodeList.push_back(node);
}
}
}
if (nodeList.empty())
{
return NULL;
}
if (nodeList.size()==1)
{
return nodeList.front();
}
else // size >1
{
osg::Group* group = new osg::Group;
for(NodeList::iterator itr=nodeList.begin();
itr!=nodeList.end();
++itr)
{
group->addChild(*itr);
}
return group;
}
}
Node* osgDB::readNodeFiles(osg::ArgumentParser& arguments,const ReaderWriter::Options* options)
{
typedef std::vector< osg::ref_ptr<osg::Node> > NodeList;
NodeList nodeList;
std::string filename;
while (arguments.read("--file-cache",filename))
{
std::string str("OSG_FILE_CACHE=");
str += filename;
putenv(strdup((char*)str.c_str()));
}
while (arguments.read("--image",filename))
{
osg::ref_ptr<osg::Image> image = readImageFile(filename.c_str(), options);
if (image.valid())
{
osg::Geode* geode = osg::createGeodeForImage(image.get());
if (image->isImageTranslucent())
{
osg::notify()<<"Image "<<image->getFileName()<<" is translucent; setting up blending."<<std::endl;
geode->getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);
geode->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
}
nodeList.push_back(geode);
}
}
while (arguments.read("--movie",filename))
{
osg::ref_ptr<osg::Image> image = readImageFile(filename.c_str(), options);
osg::ref_ptr<osg::ImageStream> imageStream = dynamic_cast<osg::ImageStream*>(image.get());
if (imageStream.valid())
{
// start the stream playing.
imageStream->play();
osg::ref_ptr<osg::Geometry> pictureQuad = 0;
bool useTextureRectangle = true;
if (useTextureRectangle)
{
pictureQuad = osg::createTexturedQuadGeometry(osg::Vec3(0.0f,0.0f,0.0f),
osg::Vec3(image->s(),0.0f,0.0f),
osg::Vec3(0.0f,0.0f,image->t()),
0.0f,image->t(), image->s(),0.0f);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
new osg::TextureRectangle(image.get()),
osg::StateAttribute::ON);
}
else
{
pictureQuad = osg::createTexturedQuadGeometry(osg::Vec3(0.0f,0.0f,0.0f),
osg::Vec3(image->s(),0.0f,0.0f),
osg::Vec3(0.0f,0.0f,image->t()),
0.0f,0.0f, 1.0f,1.0f);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
new osg::Texture2D(image.get()),
osg::StateAttribute::ON);
}
if (pictureQuad.valid())
{
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
geode->addDrawable(pictureQuad.get());
nodeList.push_back(geode.get());
}
}
else if (image.valid())
{
nodeList.push_back(osg::createGeodeForImage(image.get()));
}
}
while (arguments.read("--dem",filename))
{
osg::HeightField* hf = readHeightFieldFile(filename.c_str(), options);
if (hf)
{
osg::Geode* geode = new osg::Geode;
geode->addDrawable(new osg::ShapeDrawable(hf));
nodeList.push_back(geode);
}
}
// note currently doesn't delete the loaded file entries from the command line yet...
for(int pos=1;pos<arguments.argc();++pos)
{
if (!arguments.isOption(pos))
{
// not an option so assume string is a filename.
osg::Node *node = osgDB::readNodeFile( arguments[pos], options);
if(node)
{
if (node->getName().empty()) node->setName( arguments[pos] );
nodeList.push_back(node);
}
}
}
if (nodeList.empty())
{
return NULL;
}
if (nodeList.size()==1)
{
return nodeList.front().release();
}
else // size >1
{
osg::Group* group = new osg::Group;
for(NodeList::iterator itr=nodeList.begin();
itr!=nodeList.end();
++itr)
{
group->addChild((*itr).get());
}
return group;
}
}
osg::ref_ptr<osg::Object> osgDB::readRefObjectFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readObject(filename,options);
if (rr.validObject()) return osg::ref_ptr<osg::Object>(rr.getObject());
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
osg::ref_ptr<osg::Image> osgDB::readRefImageFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readImage(filename,options);
if (rr.validImage()) return osg::ref_ptr<osg::Image>(rr.getImage());
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
osg::ref_ptr<osg::Shader> osgDB::readRefShaderFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readShader(filename,options);
if (rr.validShader()) return osg::ref_ptr<osg::Shader>(rr.getShader());
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
osg::ref_ptr<osg::HeightField> osgDB::readRefHeightFieldFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readHeightField(filename,options);
if (rr.validHeightField()) return osg::ref_ptr<osg::HeightField>(rr.getHeightField());
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
osg::ref_ptr<osg::Node> osgDB::readRefNodeFile(const std::string& filename,const ReaderWriter::Options* options)
{
ReaderWriter::ReadResult rr = Registry::instance()->readNode(filename,options);
if (rr.validNode()) return osg::ref_ptr<osg::Node>(rr.getNode());
if (rr.error()) notify(WARN) << rr.message() << std::endl;
return NULL;
}
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