433 lines
15 KiB
C++
433 lines
15 KiB
C++
// -*-c++-*-
|
|
|
|
#include <osgViewer/Viewer>
|
|
|
|
#include <osgDB/ReadFile>
|
|
|
|
#include <osg/Geode>
|
|
#include <osg/Geometry>
|
|
#include <osg/StateSet>
|
|
#include <osg/Material>
|
|
#include <osg/Texture2D>
|
|
#include <osg/TextureRectangle>
|
|
#include <osg/TexMat>
|
|
#include <osg/CullFace>
|
|
#include <osg/ImageStream>
|
|
#include <osg/io_utils>
|
|
|
|
#include <osgGA/TrackballManipulator>
|
|
#include <osgGA/EventVisitor>
|
|
|
|
#include <iostream>
|
|
|
|
osg::ImageStream* s_imageStream = 0;
|
|
class MovieEventHandler : public osgGA::GUIEventHandler
|
|
{
|
|
public:
|
|
|
|
MovieEventHandler() {}
|
|
|
|
void set(osg::Node* node);
|
|
|
|
virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa, osg::Object*, osg::NodeVisitor* nv);
|
|
|
|
virtual void getUsage(osg::ApplicationUsage& usage) const;
|
|
|
|
typedef std::vector< osg::ref_ptr<osg::ImageStream> > ImageStreamList;
|
|
|
|
protected:
|
|
|
|
virtual ~MovieEventHandler() {}
|
|
|
|
class FindImageStreamsVisitor : public osg::NodeVisitor
|
|
{
|
|
public:
|
|
FindImageStreamsVisitor(ImageStreamList& imageStreamList):
|
|
_imageStreamList(imageStreamList) {}
|
|
|
|
virtual void apply(osg::Geode& geode)
|
|
{
|
|
apply(geode.getStateSet());
|
|
|
|
for(unsigned int i=0;i<geode.getNumDrawables();++i)
|
|
{
|
|
apply(geode.getDrawable(i)->getStateSet());
|
|
}
|
|
|
|
traverse(geode);
|
|
}
|
|
|
|
virtual void apply(osg::Node& node)
|
|
{
|
|
apply(node.getStateSet());
|
|
traverse(node);
|
|
}
|
|
|
|
inline void apply(osg::StateSet* stateset)
|
|
{
|
|
if (!stateset) return;
|
|
|
|
osg::StateAttribute* attr = stateset->getTextureAttribute(0,osg::StateAttribute::TEXTURE);
|
|
if (attr)
|
|
{
|
|
osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(attr);
|
|
if (texture2D) apply(dynamic_cast<osg::ImageStream*>(texture2D->getImage()));
|
|
|
|
osg::TextureRectangle* textureRec = dynamic_cast<osg::TextureRectangle*>(attr);
|
|
if (textureRec) apply(dynamic_cast<osg::ImageStream*>(textureRec->getImage()));
|
|
}
|
|
}
|
|
|
|
inline void apply(osg::ImageStream* imagestream)
|
|
{
|
|
if (imagestream)
|
|
{
|
|
_imageStreamList.push_back(imagestream);
|
|
s_imageStream = imagestream;
|
|
}
|
|
}
|
|
|
|
ImageStreamList& _imageStreamList;
|
|
};
|
|
|
|
|
|
ImageStreamList _imageStreamList;
|
|
|
|
};
|
|
|
|
|
|
|
|
void MovieEventHandler::set(osg::Node* node)
|
|
{
|
|
_imageStreamList.clear();
|
|
if (node)
|
|
{
|
|
FindImageStreamsVisitor fisv(_imageStreamList);
|
|
node->accept(fisv);
|
|
}
|
|
}
|
|
|
|
|
|
bool MovieEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa, osg::Object*, osg::NodeVisitor* nv)
|
|
{
|
|
switch(ea.getEventType())
|
|
{
|
|
case(osgGA::GUIEventAdapter::MOVE):
|
|
case(osgGA::GUIEventAdapter::PUSH):
|
|
case(osgGA::GUIEventAdapter::RELEASE):
|
|
{
|
|
|
|
osgViewer::View* view = dynamic_cast<osgViewer::View*>(&aa);
|
|
osg::notify(osg::NOTICE)<<"osgmovie - view = "<<view<<std::endl;
|
|
osgUtil::LineSegmentIntersector::Intersections intersections;
|
|
if (view && view->computeIntersections(ea.getX(), ea.getY(), nv->getNodePath().back(), intersections))
|
|
{
|
|
#if 1
|
|
osg::notify(osg::NOTICE)<<"osgmovie - Vertex interpolation not implemented yet"<<std::endl;
|
|
#else
|
|
// use the nearest intersection
|
|
const osgUtil::LineSegmentIntersector::Intersection& intersection = *(intersections.begin());
|
|
osg::Drawable* drawable = intersection.drawable.get();
|
|
osg::Geometry* geometry = drawable ? drawable->asGeometry() : 0;
|
|
osg::Vec3Array* vertices = geometry ? dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray()) : 0;
|
|
if (vertices)
|
|
{
|
|
// get the vertex indices.
|
|
const osgUtil::LineSegmentIntersector::Intersection::IndexList& vil = intersection.indexList;
|
|
|
|
if (vil.size()==3)
|
|
{
|
|
int i1 = vil[0];
|
|
int i2 = vil[1];
|
|
int i3 = vil[2];
|
|
osg::Vec3 v1 = (*vertices)[i1];
|
|
osg::Vec3 v2 = (*vertices)[i2];
|
|
osg::Vec3 v3 = (*vertices)[i3];
|
|
osg::Vec3 v = intersection.localIntersectionPoint;
|
|
|
|
osg::Vec3 p1 = intersection.getLocalLineSegment()->start();
|
|
osg::Vec3 p2 = intersection.getLocalLineSegment()->end();
|
|
|
|
osg::Vec3 p12 = p1-p2;
|
|
osg::Vec3 v13 = v1-v3;
|
|
osg::Vec3 v23 = v2-v3;
|
|
osg::Vec3 p1v3 = p1-v3;
|
|
|
|
osg::Matrix matrix(p12.x(), v13.x(), v23.x(), 0.0,
|
|
p12.y(), v13.y(), v23.y(), 0.0,
|
|
p12.z(), v13.z(), v23.z(), 0.0,
|
|
0.0, 0.0, 0.0, 1.0);
|
|
|
|
osg::Matrix inverse;
|
|
inverse.invert(matrix);
|
|
|
|
osg::Vec3 ratio = inverse*p1v3;
|
|
|
|
// extract the baricentric coordinates.
|
|
float r1 = ratio.y();
|
|
float r2 = ratio.z();
|
|
float r3 = 1.0f-r1-r2;
|
|
|
|
osg::Array* texcoords = (geometry->getNumTexCoordArrays()>0) ? geometry->getTexCoordArray(0) : 0;
|
|
osg::Vec2Array* texcoords_Vec2Array = dynamic_cast<osg::Vec2Array*>(texcoords);
|
|
if (texcoords_Vec2Array)
|
|
{
|
|
// we have tex coord array so now we can compute the final tex coord at the point of intersection.
|
|
osg::Vec2 tc1 = (*texcoords_Vec2Array)[i1];
|
|
osg::Vec2 tc2 = (*texcoords_Vec2Array)[i2];
|
|
osg::Vec2 tc3 = (*texcoords_Vec2Array)[i3];
|
|
osg::Vec2 tc = tc1*r1 + tc2*r2 + tc3*r3;
|
|
|
|
osg::notify(osg::NOTICE)<<"We hit tex coords "<<tc<<std::endl;
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
osg::notify(osg::NOTICE)<<"Intersection has insufficient indices to work with";
|
|
}
|
|
|
|
}
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
osg::notify(osg::NOTICE)<<"No intersection"<<std::endl;
|
|
}
|
|
break;
|
|
}
|
|
case(osgGA::GUIEventAdapter::KEYDOWN):
|
|
{
|
|
if (ea.getKey()=='s')
|
|
{
|
|
for(ImageStreamList::iterator itr=_imageStreamList.begin();
|
|
itr!=_imageStreamList.end();
|
|
++itr)
|
|
{
|
|
std::cout<<"Play"<<std::endl;
|
|
(*itr)->play();
|
|
}
|
|
return true;
|
|
}
|
|
else if (ea.getKey()=='p')
|
|
{
|
|
for(ImageStreamList::iterator itr=_imageStreamList.begin();
|
|
itr!=_imageStreamList.end();
|
|
++itr)
|
|
{
|
|
std::cout<<"Pause"<<std::endl;
|
|
(*itr)->pause();
|
|
}
|
|
return true;
|
|
}
|
|
else if (ea.getKey()=='r')
|
|
{
|
|
for(ImageStreamList::iterator itr=_imageStreamList.begin();
|
|
itr!=_imageStreamList.end();
|
|
++itr)
|
|
{
|
|
std::cout<<"Restart"<<std::endl;
|
|
(*itr)->rewind();
|
|
(*itr)->play();
|
|
}
|
|
return true;
|
|
}
|
|
else if (ea.getKey()=='l')
|
|
{
|
|
for(ImageStreamList::iterator itr=_imageStreamList.begin();
|
|
itr!=_imageStreamList.end();
|
|
++itr)
|
|
{
|
|
if ( (*itr)->getLoopingMode() == osg::ImageStream::LOOPING)
|
|
{
|
|
std::cout<<"Toggle Looping Off"<<std::endl;
|
|
(*itr)->setLoopingMode( osg::ImageStream::NO_LOOPING );
|
|
}
|
|
else
|
|
{
|
|
std::cout<<"Toggle Looping On"<<std::endl;
|
|
(*itr)->setLoopingMode( osg::ImageStream::LOOPING );
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void MovieEventHandler::getUsage(osg::ApplicationUsage& usage) const
|
|
{
|
|
usage.addKeyboardMouseBinding("p","Pause movie");
|
|
usage.addKeyboardMouseBinding("s","Play movie");
|
|
usage.addKeyboardMouseBinding("r","Restart movie");
|
|
usage.addKeyboardMouseBinding("l","Toggle looping of movie");
|
|
}
|
|
|
|
|
|
osg::Geometry* myCreateTexturedQuadGeometry(const osg::Vec3& pos,float width,float height, osg::Image* image, bool useTextureRectangle)
|
|
{
|
|
if (useTextureRectangle)
|
|
{
|
|
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(pos,
|
|
osg::Vec3(width,0.0f,0.0f),
|
|
osg::Vec3(0.0f,0.0f,height),
|
|
0.0f,image->t(), image->s(),0.0f);
|
|
|
|
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
|
|
new osg::TextureRectangle(image),
|
|
osg::StateAttribute::ON);
|
|
|
|
return pictureQuad;
|
|
}
|
|
else
|
|
{
|
|
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(pos,
|
|
osg::Vec3(width,0.0f,0.0f),
|
|
osg::Vec3(0.0f,0.0f,height),
|
|
0.0f,1.0f, 1.0f,0.0f);
|
|
|
|
osg::Texture2D* texture = new osg::Texture2D(image);
|
|
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
|
|
|
|
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
|
|
texture,
|
|
osg::StateAttribute::ON);
|
|
|
|
return pictureQuad;
|
|
}
|
|
}
|
|
|
|
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()->setApplicationName(arguments.getApplicationName());
|
|
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" example demonstrates the use of ImageStream for rendering movies as textures.");
|
|
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--texture2D","Use Texture2D rather than TextureRectangle.");
|
|
arguments.getApplicationUsage()->addCommandLineOption("--shader","Use shaders to post process the video.");
|
|
|
|
bool useTextureRectangle = true;
|
|
bool useShader = false;
|
|
|
|
// construct the viewer.
|
|
osgViewer::Viewer viewer;
|
|
|
|
while (arguments.read("--texture2D")) useTextureRectangle=false;
|
|
while (arguments.read("--shader")) useShader=true;
|
|
|
|
// if user request help write it out to cout.
|
|
if (arguments.read("-h") || arguments.read("--help"))
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
|
|
osg::Vec3 pos(0.0f,0.0f,0.0f);
|
|
|
|
osg::StateSet* stateset = geode->getOrCreateStateSet();
|
|
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
|
|
|
|
if (useShader)
|
|
{
|
|
//useTextureRectangle = false;
|
|
|
|
static const char *shaderSourceTextureRec = {
|
|
"uniform vec4 cutoff_color;\n"
|
|
"uniform samplerRect movie_texture;\n"
|
|
"void main(void)\n"
|
|
"{\n"
|
|
" vec4 texture_color = textureRect(movie_texture, gl_TexCoord[0]); \n"
|
|
" if (all(lessThanEqual(texture_color,cutoff_color))) discard; \n"
|
|
" gl_FragColor = texture_color;\n"
|
|
"}\n"
|
|
};
|
|
|
|
static const char *shaderSourceTexture2D = {
|
|
"uniform vec4 cutoff_color;\n"
|
|
"uniform sampler2D movie_texture;\n"
|
|
"void main(void)\n"
|
|
"{\n"
|
|
" vec4 texture_color = texture2D(movie_texture, gl_TexCoord[0]); \n"
|
|
" if (all(lessThanEqual(texture_color,cutoff_color))) discard; \n"
|
|
" gl_FragColor = texture_color;\n"
|
|
"}\n"
|
|
};
|
|
|
|
osg::Program* program = new osg::Program;
|
|
|
|
program->addShader(new osg::Shader(osg::Shader::FRAGMENT,
|
|
useTextureRectangle ? shaderSourceTextureRec : shaderSourceTexture2D));
|
|
|
|
stateset->addUniform(new osg::Uniform("cutoff_color",osg::Vec4(0.1f,0.1f,0.1f,1.0f)));
|
|
stateset->addUniform(new osg::Uniform("movie_texture",0));
|
|
|
|
stateset->setAttribute(program);
|
|
|
|
}
|
|
|
|
|
|
for(int i=1;i<arguments.argc();++i)
|
|
{
|
|
if (arguments.isString(i))
|
|
{
|
|
osg::Image* image = osgDB::readImageFile(arguments[i]);
|
|
osg::ImageStream* imagestream = dynamic_cast<osg::ImageStream*>(image);
|
|
if (imagestream) imagestream->play();
|
|
|
|
if (image)
|
|
{
|
|
geode->addDrawable(myCreateTexturedQuadGeometry(pos,image->s(),image->t(),image, useTextureRectangle));
|
|
|
|
pos.z() += image->t()*1.5f;
|
|
}
|
|
else
|
|
{
|
|
std::cout<<"Unable to read file "<<arguments[i]<<std::endl;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (geode->getNumDrawables()==0)
|
|
{
|
|
// nothing loaded.
|
|
arguments.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// pass the model to the MovieEventHandler so it can pick out ImageStream's to manipulate.
|
|
MovieEventHandler* meh = new MovieEventHandler();
|
|
geode->setEventCallback(meh);
|
|
meh->set(geode.get());
|
|
|
|
// report any errors if they have occured when parsing the program aguments.
|
|
if (arguments.errors())
|
|
{
|
|
arguments.writeErrorMessages(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
if (arguments.argc()<=1)
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
|
|
return 1;
|
|
}
|
|
|
|
// set the scene to render
|
|
viewer.setSceneData(geode.get());
|
|
|
|
// create the windows and run the threads.
|
|
return viewer.run();
|
|
|
|
|
|
}
|