osg::Node* createModel(bool overlay, osgSim::OverlayNode::OverlayTechnique technique)
{
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 100.0f;
osg::Group* root = new osg::Group;
float baseHeight = center.z()-radius*0.5;
osg::Node* baseModel = createBase(osg::Vec3(center.x(), center.y(), baseHeight),radius);
osg::Node* movingModel = createMovingModel(center,radius*0.8f);
if (overlay)
{
osgSim::OverlayNode* overlayNode = new osgSim::OverlayNode(technique);
overlayNode->setContinuousUpdate(true);
overlayNode->setOverlaySubgraph(movingModel);
overlayNode->setOverlayBaseHeight(baseHeight-0.01);
overlayNode->addChild(baseModel);
root->addChild(overlayNode);
}
else
{
root->addChild(baseModel);
}
root->addChild(movingModel);
return root;
}
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;
}
osg::Node* createModel(osg::ArgumentParser& /*arguments*/)
{
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 100.0f;
// the shadower model
osg::Node* shadower = createMovingModel(center,radius*0.5f);
shadower->setNodeMask(CastsShadowTraversalMask);
// the shadowed model
osg::Node* shadowed = createBase(center-osg::Vec3(0.0f,0.0f,radius*0.25),radius);
shadowed->setNodeMask(ReceivesShadowTraversalMask);
osg::Group* group = new osg::Group;
group->addChild(shadowed);
group->addChild(shadower);
return group;
}
osg::Node* createModel()
{
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 100.0f;
// the shadower model
osg::Node* shadower = createMovingModel(center,radius*0.5f);
// the shadowed model
osg::Node* shadowed = createBase(center-osg::Vec3(0.0f,0.0f,radius*0.1),radius);
// combine the models together to create one which has the shadower and the shadowed with the required callback.
osg::Group* root = new osg::Group;
root->setStateSet(createSpotLightDecoratorState(0,1));
root->addChild(shadower);
root->addChild(shadowed);
return root;
}
void build_world(osg::Group *root)
{
osg::Geode* terrainGeode = new osg::Geode;
// create terrain
{
osg::ref_ptr<osg::StateSet> stateset = new osg::StateSet();
osg::ref_ptr<osg::Image> image = osgDB::readRefImageFile("Images/lz.rgb");
if (image)
{
osg::Texture2D* texture = new osg::Texture2D;
texture->setImage(image);
stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
}
terrainGeode->setStateSet( stateset );
float size = 1000; // 10km;
float scale = size/39.0f; // 10km;
float z_scale = scale*3.0f;
osg::HeightField* grid = new osg::HeightField;
grid->allocate(38,39);
grid->setXInterval(scale);
grid->setYInterval(scale);
for(unsigned int r=0; r<39; ++r)
{
for(unsigned int c=0; c<38; ++c)
{
grid->setHeight(c,r,z_scale*vertex[r+c*39][2]);
}
}
terrainGeode->addDrawable(new osg::ShapeDrawable(grid));
root->addChild(terrainGeode);
}
// create particle effects
{
osg::Vec3 position = computeTerrainIntersection(terrainGeode,100.0f,100.0f);
osgParticle::ExplosionEffect* explosion = new osgParticle::ExplosionEffect(position, 10.0f);
osgParticle::ExplosionDebrisEffect* explosionDebri = new osgParticle::ExplosionDebrisEffect(position, 10.0f);
osgParticle::SmokeEffect* smoke = new osgParticle::SmokeEffect(position, 10.0f);
osgParticle::FireEffect* fire = new osgParticle::FireEffect(position, 10.0f);
explosion->setWind(wind);
explosionDebri->setWind(wind);
smoke->setWind(wind);
fire->setWind(wind);
root->addChild(explosion);
root->addChild(explosionDebri);
root->addChild(smoke);
root->addChild(fire);
}
// create particle effects
{
osg::Vec3 position = computeTerrainIntersection(terrainGeode,200.0f,100.0f);
osgParticle::ExplosionEffect* explosion = new osgParticle::ExplosionEffect(position, 1.0f);
osgParticle::ExplosionDebrisEffect* explosionDebri = new osgParticle::ExplosionDebrisEffect(position, 1.0f);
osgParticle::SmokeEffect* smoke = new osgParticle::SmokeEffect(position, 1.0f);
osgParticle::FireEffect* fire = new osgParticle::FireEffect(position, 1.0f);
explosion->setWind(wind);
explosionDebri->setWind(wind);
smoke->setWind(wind);
fire->setWind(wind);
root->addChild(explosion);
root->addChild(explosionDebri);
root->addChild(smoke);
root->addChild(fire);
}
// create the moving models.
{
root->addChild(createMovingModel(osg::Vec3(500.0f,500.0f,500.0f),300.0f));
}
}
