Hello everyone!
I write a program about osgAL.Now I hava a problem:In my program,it can't play
two media at the same time. Who can tell me what I should do?The code :
/*
*Write by FlySky
*
[EMAIL PROTECTED] http://ww.osgChina.org
*
*/
#include <osgAL/SoundNode>
#include <osgAL/SoundRoot>
#include <osgAL/SoundManager>
#include <osgAL/SoundState>
#include <osgAL/Version>
#include <osg/DeleteHandler>
#include <osg/Notify>
#include <osg/MatrixTransform>
#include <osg/PositionAttitudeTransform>
#include <osg/Geometry>
#include <osg/Geode>
#include <osgUtil/Optimizer>
#include <osgDB/Registry>
#include <osgDB/ReadFile>
#include <osgViewer/ViewerEventHandlers>
#include <osgViewer/Viewer>
osg::ref_ptr<osgAL::SoundNode> createSound(const std::string& file);
osg::AnimationPath* createAnimationPath(const osg::Vec3& center,float
radius,double looptime)
{
osg::AnimationPath* animationPath = new osg::AnimationPath;
animationPath->setLoopMode(osg::AnimationPath::LOOP);
int numSamples = 40;
float yaw = 0.0f;
float yaw_delta = 2.0f*osg::PI/((float)numSamples-1.0f);
float roll = osg::inDegrees(30.0f);
double time=0.0f;
double time_delta = looptime/(double)numSamples;
for(int i=0;i<numSamples;++i)
{
osg::Vec3 position(center+osg::Vec3(sinf(yaw)*radius,cosf(yaw)*radius,0.0f));
osg::Quat
rotation(osg::Quat(roll,osg::Vec3(0.0,1.0,0.0))*osg::Quat(-(yaw+osg::inDegrees(90.0f)),osg::Vec3(0.0,0.0,1.0)));
animationPath->insert(time,osg::AnimationPath::ControlPoint(position,rotation));
yaw += yaw_delta;
time += time_delta;
}
return animationPath;
}
osg::Node* createBase(const osg::Vec3& center,float radius)
{
int numTilesX = 10;
int numTilesY = 10;
float width = 2*radius;
float height = 2*radius;
osg::Vec3 v000(center - osg::Vec3(width*0.5f,height*0.5f,0.0f));
osg::Vec3 dx(osg::Vec3(width/((float)numTilesX),0.0,0.0f));
osg::Vec3 dy(osg::Vec3(0.0f,height/((float)numTilesY),0.0f));
osg::Vec3Array* coords = new osg::Vec3Array;
int iy;
for(iy=0;iy<=numTilesY;++iy)
{
for(int ix=0;ix<=numTilesX;++ix)
{
coords->push_back(v000+dx*(float)ix+dy*(float)iy);
}
}
osg::Vec4Array* colors = new osg::Vec4Array;
colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f)); // white
colors->push_back(osg::Vec4(0.0f,0.0f,0.0f,1.0f)); // black
int numColors=colors->size();
int numIndicesPerRow=numTilesX+1;
osg::UByteArray* coordIndices = new osg::UByteArray;
osg::UByteArray* colorIndices = new osg::UByteArray;
for(iy=0;iy<numTilesY;++iy)
{
for(int ix=0;ix<numTilesX;++ix)
{
coordIndices->push_back(ix +(iy+1)*numIndicesPerRow);
coordIndices->push_back(ix +iy*numIndicesPerRow);
coordIndices->push_back((ix+1)+iy*numIndicesPerRow);
coordIndices->push_back((ix+1)+(iy+1)*numIndicesPerRow);
colorIndices->push_back((ix+iy)%numColors);
}
}
osg::Vec3Array* normals = new osg::Vec3Array;
normals->push_back(osg::Vec3(0.0f,0.0f,1.0f));
osg::Geometry* geom = new osg::Geometry;
geom->setVertexArray(coords);
geom->setVertexIndices(coordIndices);
geom->setColorArray(colors);
geom->setColorIndices(colorIndices);
geom->setColorBinding(osg::Geometry::BIND_PER_PRIMITIVE);
geom->setNormalArray(normals);
geom->setNormalBinding(osg::Geometry::BIND_OVERALL);
geom->addPrimitiveSet(new
osg::DrawArrays(osg::PrimitiveSet::QUADS,0,coordIndices->size()));
osg::Geode* geode = new osg::Geode;
geode->addDrawable(geom);
return geode;
}
osg::Node* createMovingModel(const osg::Vec3& center, float radius)
{
float animationLength = 10.0f;
osg::AnimationPath* animationPath =
createAnimationPath(center,radius,animationLength);
osg::Group* model = new osg::Group;
osg::Node* glider = osgDB::readNodeFile("glider.osg");
if (glider)
{
const osg::BoundingSphere& bs = glider->getBound();
float size = radius/bs.radius()*0.3f;
osg::MatrixTransform* positioned = new osg::MatrixTransform;
positioned->setDataVariance(osg::Object::STATIC);
positioned->setMatrix(osg::Matrix::translate(-bs.center())*
osg::Matrix::scale(size,size,size)*
osg::Matrix::rotate(osg::inDegrees(-90.0f),0.0f,0.0f,1.0f));
positioned->addChild(glider);
osg::ref_ptr<osgAL::SoundNode> sound_node = createSound("high-e.wav");
positioned->addChild(sound_node.get());
osg::PositionAttitudeTransform* xform = new osg::PositionAttitudeTransform;
xform->setUpdateCallback(new
osg::AnimationPathCallback(animationPath,0.0,1.0));
xform->addChild(positioned);
model->addChild(xform);
}
osg::Node* cessna = osgDB::readNodeFile("cessna.osg");
if (cessna)
{
const osg::BoundingSphere& bs = cessna->getBound();
float size = radius/bs.radius()*0.3f;
osg::MatrixTransform* positioned = new osg::MatrixTransform;
positioned->setDataVariance(osg::Object::STATIC);
positioned->setMatrix(osg::Matrix::translate(-bs.center())*
osg::Matrix::scale(size,size,size)*
osg::Matrix::rotate(osg::inDegrees(180.0f),0.0f,0.0f,1.0f));
positioned->addChild(cessna);
osg::ref_ptr<osgAL::SoundNode> sound = createSound("bee.wav") ;
positioned->addChild(sound.get()) ;
osg::MatrixTransform* xform = new osg::MatrixTransform;
xform->setUpdateCallback(new
osg::AnimationPathCallback(animationPath,0.0f,2.0));
xform->addChild(positioned);
model->addChild(xform);
}
return model;
}
osg::ref_ptr<osgAL::SoundNode> createSound(const std::string& file)
{
openalpp::Sample *sample = new openalpp::Sample(file.c_str());
osg::ref_ptr<osgAL::SoundState> sound_state = new osgAL::SoundState("glider");
sound_state->setSample(sample);
sound_state->setGain(0.9f);
sound_state->setPitch(1);
sound_state->setPlay(true);
sound_state->setLooping(true);
sound_state->allocateSource(10, false);
sound_state->setReferenceDistance(70);
sound_state->setRolloffFactor(4);
sound_state->apply();
osgAL::SoundManager::instance()->addSoundState(sound_state.get());
osg::ref_ptr<osgAL::SoundNode> sound = new osgAL::SoundNode;
sound->setSoundState(sound_state.get());
return sound;
}
osg::Node* createModel()
{
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 100.0f;
osg::Group* root = new osg::Group;
root->addChild(createMovingModel(center,radius*0.8f));
root->addChild(createBase(center-osg::Vec3(0.0f,0.0f,radius*0.5),radius));
return root;
}
int main( int argc, char **argv )
{
osgViewer::Viewer* viewer = new osgViewer::Viewer();
viewer->addEventHandler(new osgViewer::WindowSizeHandler);
viewer->addEventHandler(new osgViewer::StatsHandler);
osgAL::SoundManager::instance()->init(16);
osgAL::SoundManager::instance()->getEnvironment()->setDistanceModel(openalpp::InverseDistance);
osgAL::SoundManager::instance()->getEnvironment()->setDopplerFactor(1);
osg::Node* model = createModel();
if (!model)
{
return 1;
}
osg::MatrixTransform* rootnode = new osg::MatrixTransform;
rootnode->setMatrix(osg::Matrix::rotate(osg::inDegrees(30.0f),1.0f,0.0f,0.0f));
rootnode->addChild(model);
osg::ref_ptr<osgAL::SoundRoot> sound_root = new osgAL::SoundRoot;
sound_root->setUpdateEnable(true) ;
rootnode->addChild(sound_root.get());
osgUtil::Optimizer optimzer;
optimzer.optimize(rootnode);
viewer->setSceneData(rootnode);
viewer->realize();
viewer->run();
if (osg::Referenced::getDeleteHandler())
{
osg::Referenced::getDeleteHandler()->setNumFramesToRetainObjects(0);
osg::Referenced::getDeleteHandler()->flushAll();
}
osgAL::SoundManager::instance()->shutdown();
return 0 ;
}
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