238 lines
8.8 KiB
C++
238 lines
8.8 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
|
|
*
|
|
* This application is open source and may be redistributed and/or modified
|
|
* freely and without restriction, both in commericial and non commericial applications,
|
|
* as long as this copyright notice is maintained.
|
|
*
|
|
* This application 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.
|
|
*/
|
|
|
|
#include <osgDB/ReadFile>
|
|
#include <osgDB/FileUtils>
|
|
#include <osgUtil/Optimizer>
|
|
#include <osgUtil/CullVisitor>
|
|
#include <osgProducer/Viewer>
|
|
|
|
#include <osg/MatrixTransform>
|
|
#include <osgUtil/TransformCallback>
|
|
#include <osgParticle/PrecipitationEffect>
|
|
|
|
class MyGustCallback : public osg::NodeCallback
|
|
{
|
|
|
|
public:
|
|
|
|
MyGustCallback() {}
|
|
|
|
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
|
|
{
|
|
osgParticle::PrecipitationEffect* pe = dynamic_cast<osgParticle::PrecipitationEffect*>(node);
|
|
|
|
float value = sin(nv->getFrameStamp()->getReferenceTime());
|
|
if (value<-0.5) pe->getParameters()->wind.set(5.0,0.0,0.0);
|
|
else pe->getParameters()->wind.set(1.0,0.0,0.0);
|
|
|
|
traverse(node, nv);
|
|
}
|
|
};
|
|
|
|
#if 0
|
|
osg::Node* createModel(osg::Node* loadedModel, osgParticle::PrecipitationParameters& parameters)
|
|
{
|
|
osg::Group* group = new osg::Group;
|
|
|
|
osg::BoundingBox bb(0.0, 0.0, 0.0, 100.0, 100.0, 100.0);
|
|
|
|
if (loadedModel)
|
|
{
|
|
group->addChild(loadedModel);
|
|
|
|
osg::BoundingSphere bs = loadedModel->getBound();
|
|
|
|
bb.set( -500, -500, 0, +500, +500, 10);
|
|
|
|
parameters.boundingBox = bb;
|
|
|
|
osg::StateSet* stateset = loadedModel->getOrCreateStateSet();
|
|
|
|
osg::Fog* fog = new osg::Fog;
|
|
|
|
if (parameters.fogExponent<1.0)
|
|
{
|
|
fog->setMode(osg::Fog::LINEAR);
|
|
}
|
|
else if (parameters.fogExponent<2.0)
|
|
{
|
|
fog->setMode(osg::Fog::EXP);
|
|
}
|
|
else
|
|
{
|
|
fog->setMode(osg::Fog::EXP2);
|
|
}
|
|
|
|
fog->setDensity(parameters.fogDensity);
|
|
fog->setStart(0.0f);
|
|
fog->setEnd(parameters.fogEnd);
|
|
fog->setColor(parameters.fogColour);
|
|
stateset->setAttributeAndModes(fog, osg::StateAttribute::ON);
|
|
|
|
osg::LightSource* lightSource = new osg::LightSource;
|
|
group->addChild(lightSource);
|
|
|
|
osg::Light* light = lightSource->getLight();
|
|
light->setLightNum(0);
|
|
light->setPosition(osg::Vec4(0.0f,0.0f,1.0f,0.0f)); // directional light from above
|
|
light->setAmbient(osg::Vec4(0.8f,0.8f,0.8f,1.0f));
|
|
light->setDiffuse(osg::Vec4(0.2f,0.2f,0.2f,1.0f));
|
|
light->setSpecular(osg::Vec4(0.2f,0.2f,0.2f,1.0f));
|
|
|
|
|
|
}
|
|
|
|
group->addChild(createCellRainEffect(parameters));
|
|
|
|
return group;
|
|
}
|
|
#endif
|
|
|
|
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 provides an interactive viewer for visualising point clouds..");
|
|
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
|
|
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
arguments.getApplicationUsage()->addCommandLineOption("","");
|
|
|
|
|
|
// construct the viewer.
|
|
osgProducer::Viewer viewer(arguments);
|
|
|
|
// set up the value with sensible default event handlers.
|
|
viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
|
|
|
|
// get details on keyboard and mouse bindings used by the viewer.
|
|
viewer.getUsage(*arguments.getApplicationUsage());
|
|
|
|
osg::ref_ptr<osgParticle::PrecipitationEffect> precipitationEffect = new osgParticle::PrecipitationEffect;
|
|
osgParticle::PrecipitationParameters& parameters = *precipitationEffect->getParameters();
|
|
|
|
float intensity;
|
|
while (arguments.read("--snow", intensity)) parameters.snow(intensity);
|
|
while (arguments.read("--rain", intensity)) parameters.rain(intensity);
|
|
|
|
while (arguments.read("--particleSize", parameters.particleSize)) {}
|
|
while (arguments.read("--particleColor", parameters.particleColour.r(), parameters.particleColour.g(), parameters.particleColour.b(), parameters.particleColour.a())) {}
|
|
while (arguments.read("--particleColour", parameters.particleColour.r(), parameters.particleColour.g(), parameters.particleColour.b(), parameters.particleColour.a())) {}
|
|
|
|
osg::Vec3 wind;
|
|
while (arguments.read("--wind", wind.x(), wind.y(), wind.z())) parameters.wind = wind;
|
|
|
|
while (arguments.read("--particleVelocity", parameters.particleVelocity)) {}
|
|
|
|
while (arguments.read("--nearTransition", parameters.nearTransition )) {}
|
|
while (arguments.read("--farTransition", parameters.farTransition )) {}
|
|
|
|
while (arguments.read("--particleDensity", parameters.particleDensity )) {}
|
|
|
|
while (arguments.read("--cellSizeX", parameters.cellSizeX )) {}
|
|
while (arguments.read("--cellSizeY", parameters.cellSizeY )) {}
|
|
while (arguments.read("--cellSizeZ", parameters.cellSizeZ )) {}
|
|
|
|
while (arguments.read("--boundingBox", parameters.boundingBox.xMin(),
|
|
parameters.boundingBox.yMin(),
|
|
parameters.boundingBox.zMin(),
|
|
parameters.boundingBox.xMax(),
|
|
parameters.boundingBox.yMax(),
|
|
parameters.boundingBox.zMax())) {}
|
|
|
|
while (arguments.read("--fogDensity", parameters.fogDensity )) {}
|
|
while (arguments.read("--fogExponent", parameters.fogExponent )) {}
|
|
while (arguments.read("--fogEnd", parameters.fogEnd )) {}
|
|
while (arguments.read("--fogColor", parameters.fogColour.r(), parameters.fogColour.g(), parameters.fogColour.b(), parameters.fogColour.a())) {}
|
|
while (arguments.read("--fogColour", parameters.fogColour.r(), parameters.fogColour.g(), parameters.fogColour.b(), parameters.fogColour.a())) {}
|
|
|
|
while (arguments.read("--useFarLineSegments")) { parameters.useFarLineSegments = true; }
|
|
|
|
|
|
|
|
|
|
viewer.setClearColor(parameters.clearColour);
|
|
|
|
// now force the effect to update all its internal state.
|
|
precipitationEffect->update();
|
|
|
|
|
|
// if user request help write it out to cout.
|
|
if (arguments.read("-h") || arguments.read("--help"))
|
|
{
|
|
arguments.getApplicationUsage()->write(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// any option left unread are converted into errors to write out later.
|
|
arguments.reportRemainingOptionsAsUnrecognized();
|
|
|
|
// report any errors if they have occured when parsing the program aguments.
|
|
if (arguments.errors())
|
|
{
|
|
arguments.writeErrorMessages(std::cout);
|
|
return 1;
|
|
}
|
|
|
|
// read the scene from the list of file specified commandline args.
|
|
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
|
|
if (!loadedModel)
|
|
{
|
|
std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
|
|
return 1;
|
|
}
|
|
|
|
// precipitationEffect->setUpdateCallback(new MyGustCallback);
|
|
|
|
osg::ref_ptr<osg::Group> group = new osg::Group;
|
|
group->addChild(precipitationEffect.get());
|
|
group->addChild(loadedModel.get());
|
|
|
|
// set the scene to render
|
|
viewer.setSceneData(group.get());
|
|
|
|
// create the windows and run the threads.
|
|
viewer.realize();
|
|
|
|
while( !viewer.done() )
|
|
{
|
|
// wait for all cull and draw threads to complete.
|
|
viewer.sync();
|
|
|
|
// update the scene by traversing it with the the update visitor which will
|
|
// call all node update callbacks and animations.
|
|
viewer.update();
|
|
|
|
// fire off the cull and draw traversals of the scene.
|
|
viewer.frame();
|
|
|
|
}
|
|
|
|
// wait for all cull and draw threads to complete before exit.
|
|
viewer.sync();
|
|
|
|
return 0;
|
|
}
|
|
|