bool DXFWriterNodeVisitor::writeHeader(const osg::BoundingSphere &bound) { if ( _layers.empty() ) { return false; } _fout << "999\n written by OpenSceneGraph" << std::endl; _fout << "0\nSECTION\n2\nHEADER\n"; _fout << "9\n$ACADVER\n1\nAC1006\n"; // specify minimum autocad version AC1006=R10 _fout << "9\n$EXTMIN\n10\n"<<bound.center().x()-bound.radius()<<"\n20\n"<<bound.center().y()-bound.radius()<<"\n30\n"<<bound.center().z()-bound.radius()<<"\n"; _fout << "9\n$EXTMAX\n10\n"<<bound.center().x()+bound.radius()<<"\n20\n"<<bound.center().y()+bound.radius()<<"\n30\n"<<bound.center().z()+bound.radius()<<"\n"; _fout << "0\nENDSEC\n0\nSECTION\n2\nTABLES\n"; _fout << "0\nTABLE\n2\nLAYER\n"; for (std::vector<Layer>::iterator itr=_layers.begin();itr!=_layers.end();itr++) { if ( itr->_color ) { _fout<<"0\nLAYER\n2\n"<<itr->_name<<"\n70\n0\n62\n"<<itr->_color<<"\n6\nContinuous\n"; // color by layer } else { _fout<<"0\nLAYER\n2\n"<<itr->_name<<"\n70\n0\n62\n255\n6\nContinuous\n"; // most apps won't read 24bit color without a color value in header } } _fout << "0\nENDTAB\n0\nENDSEC\n"; _fout << "0\nSECTION\n2\nENTITIES\n"; _firstPass=false; _count=0; return true; }
void OrbitCameraManipulator::zoomToBoundingSphere( const osg::BoundingSphere& bs, double ratio_w ) { osg::Vec3f bs_center( bs.center() ); double bs_radius = bs.radius(); if( bs_radius <= 0.0 ) { bs_radius = 2.0; bs_center._v[2] = 0.5; } m_rotate_center.set( bs.center() ); osg::Vec3d eye_lookat(m_eye - m_lookat); eye_lookat.normalize(); // define animation path if( m_animation_data ) { osg::Vec3d target_lookat( bs.center() ); double d_eye = bs_radius/sin( osg::DegreesToRadians(m_fovy*0.5) ); osg::Vec3d target_eye( target_lookat + eye_lookat*d_eye ); m_animation_data->m_start_eye.set( m_eye ); m_animation_data->m_start_lookat.set( m_lookat ); m_animation_data->m_start_up.set( m_up ); m_animation_data->m_target_eye.set( target_eye ); m_animation_data->m_target_lookat.set( target_lookat ); m_animation_data->m_target_up.set( m_up ); m_animation_data->_animationTime = 0.6; m_animation_data->start( -1 ); } }
void MxCore::lookAtAndFit( const osg::BoundingSphere& bs ) { // Look at the bounding sphere center. osg::Vec3d newDir = bs.center() - _position; newDir.normalize(); setDir( newDir ); // Set the eve position distance so that the sphere fits into the minimum FOV. double minFov = ( _aspect < 1. ) ? ( _aspect * _fovy ) : _fovy; const double distance = osgwMx::computeInitialDistanceFromFOVY( bs, minFov ); setPosition( bs.center() - ( newDir * distance ) ); }
void StandardShadowMap::ViewData::aimShadowCastingCamera( const osg::BoundingSphere &bs, const osg::Light *light, const osg::Vec4 &lightPos, const osg::Vec3 &lightDir, const osg::Vec3 &lightUpVector /* by default = osg::Vec3( 0, 1 0 )*/ ) { osg::Matrixd & view = _camera->getViewMatrix(); osg::Matrixd & projection = _camera->getProjectionMatrix(); osg::Vec3 up = lightUpVector; if( up.length2() <= 0 ) up.set( 0,1,0 ); osg::Vec3d position(lightPos.x(), lightPos.y(), lightPos.z()); if (lightPos[3]==0.0) // infinite directional light { // make an orthographic projection // set the position far away along the light direction position = bs.center() - lightDir * bs.radius() * 2; } float centerDistance = (position-bs.center()).length(); float znear = centerDistance-bs.radius(); float zfar = centerDistance+bs.radius(); float zNearRatio = 0.001f; if (znear<zfar*zNearRatio) znear = zfar*zNearRatio; if ( lightPos[3]!=0.0 ) { // positional light if( light->getSpotCutoff() < 180.0f) // also needs znear zfar estimates { float spotAngle = light->getSpotCutoff(); projection.makePerspective( spotAngle * 2, 1.0, znear, zfar); view.makeLookAt(position,position+lightDir,up); } else { // standard omnidirectional positional light float top = (bs.radius()/centerDistance)*znear; float right = top; projection.makeFrustum(-right,right,-top,top,znear,zfar); view.makeLookAt(position,bs.center(),up ); } } else // directional light { float top = bs.radius(); float right = top; projection.makeOrtho(-right, right, -top, top, znear, zfar); view.makeLookAt(position,bs.center(),up); } }
void CovisePlugin::expandBoundingSphere(osg::BoundingSphere &bsphere) { if (coVRMSController::instance()->isCluster() && coVRDistributionManager::instance().isActive()) { struct BSphere { double x, y, z, radius; }; BSphere b_sphere; b_sphere.x = bsphere.center()[0]; b_sphere.y = bsphere.center()[1]; b_sphere.z = bsphere.center()[2]; b_sphere.radius = bsphere.radius(); if (coVRMSController::instance()->isMaster()) { coVRMSController::SlaveData result(sizeof(b_sphere)); if (coVRMSController::instance()->readSlaves(&result) < 0) { std::cerr << "VRSceneGraph::getBoundingSphere err: sync error"; return; } BSphere bs; for (std::vector<void *>::iterator i = result.data.begin(); i != result.data.end(); ++i) { memcpy(&bs, *i, sizeof(bs)); osg::BoundingSphere otherBs = osg::BoundingSphere(osg::Vec3(bs.x, bs.y, bs.z), bs.radius); bsphere.expandBy(otherBs); } b_sphere.x = bsphere.center()[0]; b_sphere.y = bsphere.center()[1]; b_sphere.z = bsphere.center()[2]; b_sphere.radius = bsphere.radius(); coVRMSController::instance()->sendSlaves(&b_sphere, sizeof(b_sphere)); } else { coVRMSController::instance()->sendMaster(&b_sphere, sizeof(b_sphere)); coVRMSController::instance()->readMaster(&b_sphere, sizeof(b_sphere)); bsphere = osg::BoundingSphere(osg::Vec3(b_sphere.x, b_sphere.y, b_sphere.z), b_sphere.radius); } } }