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);
}
}
}
