SpotLight::SpotLight(GLuint lightId) : DirectionalLight(lightId)
{
// No attenuation with distance
setConstantAttenuation(1.0f);
setLinearAttenuation(0.0f);
setQuadricAttenuation(0.0f);
setExponent(2.0f);
}
Light::Light(bool dynamic_in) : shadowmapTex(0), coneTex(0), has_target(false), has_shadow(false), parent(NULL), has_projector(false), glLightId(0), nearclip(1.0f), farclip(200.0f), sceneObjTarget(NULL)
{
setType(LIGHT_POINT);
setAmbient(RGB(0.0f,0.0f,0.0f));
setDiffuse(RGB(1.0f,1.0f,1.0f));
setSpecular(RGB(0.0f,0.0f,0.0f));
setConstantAttenuation(0.4f);
setLinearAttenuation(0.01f);
setQuadraticAttenuation(0.001f);
dynamic = dynamic_in;
}
int main(int argc, char** argv)
{
osg::ArgumentParser arguments( &argc, argv );
std::string dbPath;
arguments.read("--db_path", dbPath);
std::srand ( unsigned ( std::time(0) ) );
auto board = Board(boardDefinition, boardSizeX, boardSizeY, dbPath);
auto ghostFactory = GhostFactory();
auto main_obj = make_ref<osg::Group>();
main_obj->addChild(board.draw().get());
auto ghostModel = osgDB::readNodeFile(dbPath + "/cow.osg");
auto ghostCount = 16;
while(ghostCount--)
{
main_obj->addChild(ghostFactory.drawGhost(board, ghostModel).get());
}
// init rotate
auto init_rotate = make_ref<osg::MatrixTransform>();
init_rotate->setMatrix( osg::Matrix::rotate(osg::PI * 2, osg::Vec3(1.0f, 0.0f, 0.0f)) );
// chain rotates
init_rotate->addChild(main_obj);
// Root group
auto root = make_ref<osg::Group>();
root->addChild(init_rotate);
// Setup fog
if(FogEnabled) {
osg::ref_ptr<osg::Fog> fog = new osg::Fog;
fog->setMode( osg::Fog::EXP2 );
fog->setStart( 0.0f );
fog->setEnd(board.getFieldSizeX() * 20);
fog->setDensity(0.0135);
fog->setColor( osg::Vec4(0., 0., 0., 1.0) );
root->getOrCreateStateSet()->setAttributeAndModes(fog.get());
}
// Start viewer
osgViewer::Viewer viewer;
// Set up flashlight
auto lightSource = make_ref<osg::LightSource>();
lightSource->setReferenceFrame(osg::LightSource::ABSOLUTE_RF);
auto light = lightSource->getLight();
const osg::Vec3 lightPosition{1.5, -1, -1}; // right, down, front
light->setPosition(osg::Vec4{lightPosition, 1});
light->setDirection(osg::Vec3{0, 0, -1} * 30 - lightPosition);
light->setSpotExponent(60);
light->setSpotCutoff(90);
light->setDiffuse(osg::Vec4(1, 1, 1, 1));
light->setAmbient(osg::Vec4(0.6, 0.6, 0.6, 1));
light->setSpecular(osg::Vec4(1, 1, 1, 1));
light->setLinearAttenuation(0.001);
light->setConstantAttenuation(0.5);
root->addChild(lightSource);
double height = std::min(board.getFieldSizeX(), board.getFieldSizeY()) / 1.5;
auto fpsManipulator = make_ref<FPSManipulator>(board, viewer, *light);
fpsManipulator->setHomePosition(
osg::Vec3d(board.getFieldCenterX(1), board.getFieldCenterY(10), height),
osg::Vec3d(0.0f, 0.0f, height),
osg::Vec3d(0.0f, 0.0f, 1.0f)
);
auto keySwitch = make_ref<osgGA::KeySwitchMatrixManipulator>();
keySwitch->addNumberedMatrixManipulator(make_ref<osgGA::OrbitManipulator>());
keySwitch->addNumberedMatrixManipulator(fpsManipulator);
viewer.setCameraManipulator(keySwitch);
viewer.home();
viewer.setSceneData( root );
osgViewer::Viewer::Windows windows;
viewer.getWindows(windows);
viewer.getCamera()->setClearColor(osg::Vec4{0, 0, 0, 0});
viewer.getCamera()->getView()->setLightingMode(osg::View::HEADLIGHT);
auto defaultLight = viewer.getCamera()->getView()->getLight();
defaultLight->setDiffuse(osg::Vec4(0, 0, 0, 1));
defaultLight->setAmbient(osg::Vec4(0, 0, 0, 1));
defaultLight->setSpecular(osg::Vec4(0, 0, 0, 1));
// Shaders
auto program = make_ref<osg::Program>();
auto fragmentObject = make_ref<osg::Shader>(osg::Shader::FRAGMENT);
loadShaderSource(fragmentObject, dbPath + "/shader.frag");
auto vertexObject = make_ref<osg::Shader>(osg::Shader::VERTEX);
loadShaderSource(vertexObject, dbPath + "/shader.vert");
program->addShader(vertexObject);
program->addShader(fragmentObject);
root->getOrCreateStateSet()->setAttributeAndModes(program, osg::StateAttribute::ON);
root->getOrCreateStateSet()->addUniform(new osg::Uniform("samplerName", TEXTURE_UNIT));
root->getOrCreateStateSet()->addUniform(new osg::Uniform("Shininess", BoardObjectsShininess));
root->getOrCreateStateSet()->addUniform(new osg::Uniform("FogEnabled", FogEnabled));
// Optimize
osgUtil::Optimizer optimzer;
optimzer.optimize(root);
viewer.setUpViewOnSingleScreen(0);
return viewer.run();
}
