OSG::NodeTransitPtr makeScene( void )
{
setupDefaultMaterial();
OSG::NodeTransitPtr root = OSG::Node ::create();
OSG::SurfaceRefPtr surface = OSG::Surface ::create();
OSG::GeoPnt3fPropertyRefPtr cps = OSG::GeoPnt3fProperty::create();
// control points should always be 3D for the time being,
// rational support will be added later
cps->clear();
cps->push_back( OSG::Pnt3f( 1, 1, 2 ));
cps->push_back( OSG::Pnt3f( 1, 0, 0 ));
cps->push_back( OSG::Pnt3f( 1, 0, 1 ));
cps->push_back( OSG::Pnt3f( 1, -1, -2 ));
cps->push_back( OSG::Pnt3f( 0, 1, 0 ));
cps->push_back( OSG::Pnt3f( 0, 0, 0 ));
cps->push_back( OSG::Pnt3f( 0, 0, 1 ));
cps->push_back( OSG::Pnt3f( 0, -1, 1 ));
cps->push_back( OSG::Pnt3f( 0, 1, 1 ));
cps->push_back( OSG::Pnt3f( 0, 0, 1 ));
cps->push_back( OSG::Pnt3f( 0, 0, 0 ));
cps->push_back( OSG::Pnt3f( 0, -1, 0 ));
cps->push_back( OSG::Pnt3f( -1, 1, 1 ));
cps->push_back( OSG::Pnt3f( -1, 0, 1 ));
cps->push_back( OSG::Pnt3f( -1, 0, 0 ));
cps->push_back( OSG::Pnt3f( -1, -1, 0 ));
// let's clear the trimming
surface->removeCurves();
// set up dimensions and knot vectors:
surface->setDimU( 3 );
surface->setDimV( 3 );
surface->editMFKnotsU()->clear();
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsV()->clear();
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 1 );
surface->editMFKnotsV()->push_back( 1 );
surface->editMFKnotsV()->push_back( 1 );
surface->editMFKnotsV()->push_back( 1 );
// set control points and texture control points
surface->setControlPoints( cps );
// set error
surface->setError( g_error );
// and finally set the material
surface->setMaterial( gpcl_defaultmat );
root->setCore( surface );
gpcl_surface = surface;
// Usually when the endEditCP() is called for an OSGSurface object
// the need for (re)tessellation is flagged, and when the object
// would be drawn on screen it gets tessellated. This might cause
// problems in a cluster environment as surfaces may get tessellated
// more than once (e.g. on the server and on each client) which can
// be _very_ slow and annoying.
//
// The solution is "forcing" the tessellation by calling
// OSGSurface::forceTessellate(). This will perform the tessellation
// immediately, and setup flags so that automatic tessellation will
// not be called again. This means that even if you change some or
// all of the surface descriptiong FieldContainersin your OSGSurface
// object it will _not_ be retessellated. You will have to "force"
// tessellation again by calling OSGSurface::forceTessellate() whenever
// you change something. See the calls in the keyboard() function
// above.
//
// If you don't do clustering, you can probably just forget about all
// this OSGSurface::forceTessellate() stuff (just like in the other
// Surface examples), it will just work automagically and tessellate
// your surface when needed (provided you don't forget the proper
// beginEditCP()/endEditCP() calls.
if(useForceTesselate)
gpcl_surface->forceTessellate();
return root;
}
OSG::NodeTransitPtr makeScene( void )
{
setupDefaultMaterial();
OSG::NodeTransitPtr root = OSG::Node ::create();
OSG::SurfaceRefPtr surface = OSG::Surface ::create();
OSG::GeoPnt3fPropertyRefPtr cps = OSG::GeoPnt3fProperty::create();
// control points should always be 3D for the time being,
// rational support will be added later
cps->clear();
cps->push_back( OSG::Pnt3f( 1, 1, 0 ));
cps->push_back( OSG::Pnt3f( 1, 0, 0 ));
cps->push_back( OSG::Pnt3f( 1, 0, 1 ));
cps->push_back( OSG::Pnt3f( 1, -1, 1 ));
cps->push_back( OSG::Pnt3f( 0, 1, 0 ));
cps->push_back( OSG::Pnt3f( 0, 0, 0 ));
cps->push_back( OSG::Pnt3f( 0, 0, 1 ));
cps->push_back( OSG::Pnt3f( 0, -1, 1 ));
cps->push_back( OSG::Pnt3f( 0, 1, 1 ));
cps->push_back( OSG::Pnt3f( 0, 0, 1 ));
cps->push_back( OSG::Pnt3f( 0, 0, 0 ));
cps->push_back( OSG::Pnt3f( 0, -1, 0 ));
cps->push_back( OSG::Pnt3f( -1, 1, 1 ));
cps->push_back( OSG::Pnt3f( -1, 0, 1 ));
cps->push_back( OSG::Pnt3f( -1, 0, 0 ));
cps->push_back( OSG::Pnt3f( -1, -1, 0 ));
std::vector<OSG::Real64> knots1;
std::vector<OSG::Real64> knots2;
std::vector<OSG::Pnt2f> points;
knots1.clear();
knots1.push_back(0);
knots1.push_back(0);
knots1.push_back(1);
knots1.push_back(1);
knots2.clear();
knots2.push_back(0);
knots2.push_back(0);
knots2.push_back(0);
knots2.push_back(1);
knots2.push_back(1);
knots2.push_back(1);
// first, let's clear the trimming
surface->removeCurves();
// add the outer trimming around the domain
points.clear();
points.push_back( OSG::Pnt2f(0,0) );
points.push_back( OSG::Pnt2f(1,0) );
surface->addCurve( 1, knots1, points, true );
points.clear();
points.push_back( OSG::Pnt2f(1,0) );
points.push_back( OSG::Pnt2f(1,1) );
surface->addCurve( 1, knots1, points, false );
points.clear();
points.push_back( OSG::Pnt2f(1,1) );
points.push_back( OSG::Pnt2f(0,1) );
surface->addCurve( 1, knots1, points, false );
points.clear();
points.push_back( OSG::Pnt2f(0,1) );
points.push_back( OSG::Pnt2f(0,0) );
surface->addCurve( 1, knots1, points, false );
// add inner trimming loop 1
points.clear();
points.push_back( OSG::Pnt2f(0.3f,0.5f) );
points.push_back( OSG::Pnt2f(0.1f,0.9f) );
points.push_back( OSG::Pnt2f(0.5f,0.7f) );
surface->addCurve( 2, knots2, points, true );
points.clear();
points.push_back( OSG::Pnt2f(0.5f,0.7f) );
points.push_back( OSG::Pnt2f(0.9f,0.9f) );
points.push_back( OSG::Pnt2f(0.7f,0.5f) );
surface->addCurve( 2, knots2, points, false );
points.clear();
points.push_back( OSG::Pnt2f(0.7f,0.5f) );
points.push_back( OSG::Pnt2f(0.9f,0.1f) );
points.push_back( OSG::Pnt2f(0.5f,0.3f) );
surface->addCurve( 2, knots2, points, false );
points.clear();
points.push_back( OSG::Pnt2f(0.5f,0.3f) );
points.push_back( OSG::Pnt2f(0.1f,0.1f) );
points.push_back( OSG::Pnt2f(0.3f,0.5f) );
surface->addCurve( 2, knots2, points, false );
// add inner trimming loop 2
points.clear();
points.push_back( OSG::Pnt2f(0.4f,0.5f) );
points.push_back( OSG::Pnt2f(0.4f,0.4f) );
points.push_back( OSG::Pnt2f(0.5f,0.4f) );
surface->addCurve( 2, knots2, points, true );
points.clear();
points.push_back( OSG::Pnt2f(0.5f,0.4f) );
points.push_back( OSG::Pnt2f(0.6f,0.4f) );
points.push_back( OSG::Pnt2f(0.6f,0.5f) );
surface->addCurve( 2, knots2, points, false );
points.clear();
points.push_back( OSG::Pnt2f(0.6f,0.5f) );
points.push_back( OSG::Pnt2f(0.6f,0.6f) );
points.push_back( OSG::Pnt2f(0.5f,0.6f) );
surface->addCurve( 2, knots2, points, false );
points.clear();
points.push_back( OSG::Pnt2f(0.5f,0.6f) );
points.push_back( OSG::Pnt2f(0.4f,0.6f) );
points.push_back( OSG::Pnt2f(0.4f,0.5f) );
surface->addCurve( 2, knots2, points, false );
// set up dimensions and knot vectors:
surface->setDimU( 3 );
surface->setDimV( 3 );
surface->editMFKnotsU()->clear();
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 0 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsU()->push_back( 1 );
surface->editMFKnotsV()->clear();
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 0 );
surface->editMFKnotsV()->push_back( 1 );
surface->editMFKnotsV()->push_back( 1 );
surface->editMFKnotsV()->push_back( 1 );
surface->editMFKnotsV()->push_back( 1 );
// set control points and texture control points
surface->setControlPoints( cps );
// set error
surface->setError( g_error );
// and finally set the material
surface->setMaterial( gpcl_defaultmat );
root->setCore( surface );
gpcl_surface = surface;
return root;
}