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();
// Let's create two untrimmed surfaces that lie beside each other.
// Even if the tessellation error is set to be the same for
// both surfaces, due to numerical instabilities and sampling errors
// small one pixel gaps will appear. By reducing the error you can
// make most gaps disappear, but there will be still some left, even
// if you reduce the error to be extremely small -- and as a sideeffect
// the tessellation time plus the triangle count will explode.
// You can try this by supplying the '-nofb' switch and
// reducing the error by the 'g' key during rendering.
// Of course if you set different tessellation errors (generally the
// case when using view-dependent LOD algorithms) the gaps
// will be a lot more visible. Try the '-nofb' and '-de' switches, and
// play around with different errors using the 'f' and 'g'
// keys for the first surface, and the 'h' and 'j' keys for the
// second surface.
//
// Note that this is not a very good example for the Fat Borders as
// the surfaces are untrimmed, and they are also very nice numerically
// (real world models are usually much worse) and a basic uniform
// tessellation would probably get rid of the gaps (which are not very
// visible in the first place due to the nice properties of these
// surfaces). Note also that if you set too high errors or
// radically different errors, the spike-through artifacts of the
// Fat Borders will appear.
// We will hopefully come up with a better example later. :-)
OSG::NodeTransitPtr root = OSG::Node::create();
OSG::NodeRefPtr surf1 = OSG::Node::create();
OSG::NodeRefPtr surf2 = OSG::Node::create();
root->setCore( OSG::Group::create() );
root->addChild( surf1 );
root->addChild( surf2 );
OSG::SurfaceRefPtr surface1 = OSG::Surface ::create();
OSG::GeoPnt3fPropertyRefPtr cps1 = OSG::GeoPnt3fProperty::create();
cps1->clear();
cps1->push_back( OSG::Pnt3f( 1, -1, 0 ));
cps1->push_back( OSG::Pnt3f( 1, 0, 0 ));
cps1->push_back( OSG::Pnt3f( 1, 0, 1 ));
cps1->push_back( OSG::Pnt3f( 1, 1, 1 ));
cps1->push_back( OSG::Pnt3f( 0, -1, 0 ));
cps1->push_back( OSG::Pnt3f( 0, 0, 0 ));
cps1->push_back( OSG::Pnt3f( 0, 0, 1 ));
cps1->push_back( OSG::Pnt3f( 0, 1, 1 ));
cps1->push_back( OSG::Pnt3f( 0, -1, 1 ));
cps1->push_back( OSG::Pnt3f( 0, 0, 1 ));
cps1->push_back( OSG::Pnt3f( 0, 0, 0 ));
cps1->push_back( OSG::Pnt3f( 0, 1, 0 ));
cps1->push_back( OSG::Pnt3f( -1, -1, 1 ));
cps1->push_back( OSG::Pnt3f( -1, 0, 1 ));
cps1->push_back( OSG::Pnt3f( -1, 0, 0 ));
cps1->push_back( OSG::Pnt3f( -1, 1, 0 ));
OSG::SurfaceRefPtr surface2 = OSG::Surface ::create();
OSG::GeoPnt3fPropertyRefPtr cps2 = OSG::GeoPnt3fProperty::create();
cps2->clear();
cps2->push_back( OSG::Pnt3f( 5, -2, 2 ));
cps2->push_back( OSG::Pnt3f( 4, -1, 2 ));
cps2->push_back( OSG::Pnt3f( 3, 0, 0 ));
cps2->push_back( OSG::Pnt3f( 5, 1, 0 ));
cps2->push_back( OSG::Pnt3f( 2, -1, 1 ));
cps2->push_back( OSG::Pnt3f( 2, 0, 1 ));
cps2->push_back( OSG::Pnt3f( 2, 0, 0 ));
cps2->push_back( OSG::Pnt3f( 2, 1, 0 ));
cps2->push_back( OSG::Pnt3f( 2, -1, 0 ));
cps2->push_back( OSG::Pnt3f( 2, 0, 0 ));
cps2->push_back( OSG::Pnt3f( 2, 0, 1 ));
cps2->push_back( OSG::Pnt3f( 2, 1, 1 ));
cps2->push_back( OSG::Pnt3f( 1, -1, 0 ));
cps2->push_back( OSG::Pnt3f( 1, 0, 0 ));
cps2->push_back( OSG::Pnt3f( 1, 0, 1 ));
cps2->push_back( OSG::Pnt3f( 1, 1, 1 ));
std::vector<OSG::Real64> knots1;
std::vector<OSG::Pnt2f > points;
knots1.clear();
knots1.push_back(0);
knots1.push_back(0);
knots1.push_back(1);
knots1.push_back(1);
// first, let's clear the trimming
surface1->removeCurves();
// add simple outer trimming around the domain
points.clear();
points.push_back( OSG::Pnt2f(0,0) );
points.push_back( OSG::Pnt2f(1,0) );
surface1->addCurve( 1, knots1, points, true );
points.clear();
points.push_back( OSG::Pnt2f(1,0) );
points.push_back( OSG::Pnt2f(1,1) );
surface1->addCurve( 1, knots1, points, false );
points.clear();
points.push_back( OSG::Pnt2f(1,1) );
points.push_back( OSG::Pnt2f(0,1) );
surface1->addCurve( 1, knots1, points, false );
points.clear();
points.push_back( OSG::Pnt2f(0,1) );
points.push_back( OSG::Pnt2f(0,0) );
surface1->addCurve( 1, knots1, points, false );
// set up dimensions and knot vectors:
surface1->setDimU( 3 );
surface1->setDimV( 3 );
surface1->editMFKnotsU()->clear();
surface1->editMFKnotsU()->push_back( 0 );
surface1->editMFKnotsU()->push_back( 0 );
surface1->editMFKnotsU()->push_back( 0 );
surface1->editMFKnotsU()->push_back( 0 );
surface1->editMFKnotsU()->push_back( 1 );
surface1->editMFKnotsU()->push_back( 1 );
surface1->editMFKnotsU()->push_back( 1 );
surface1->editMFKnotsU()->push_back( 1 );
surface1->editMFKnotsV()->clear();
surface1->editMFKnotsV()->push_back( 0 );
surface1->editMFKnotsV()->push_back( 0 );
surface1->editMFKnotsV()->push_back( 0 );
surface1->editMFKnotsV()->push_back( 0 );
surface1->editMFKnotsV()->push_back( 1 );
surface1->editMFKnotsV()->push_back( 1 );
surface1->editMFKnotsV()->push_back( 1 );
surface1->editMFKnotsV()->push_back( 1 );
// set control points
surface1->setControlPoints( cps1 );
// set error
surface1->setError( g_error1 );
// and finally set the material
surface1->setMaterial( gpcl_defaultmat );
// first, let's clear the trimming
surface2->removeCurves();
// add simple outer trimming around the domain
points.clear();
points.push_back( OSG::Pnt2f(1,0) );
points.push_back( OSG::Pnt2f(2,0) );
surface2->addCurve( 1, knots1, points, true );
points.clear();
points.push_back( OSG::Pnt2f(2,0) );
points.push_back( OSG::Pnt2f(2,1) );
surface2->addCurve( 1, knots1, points, false );
points.clear();
points.push_back( OSG::Pnt2f(2,1) );
points.push_back( OSG::Pnt2f(1,1) );
surface2->addCurve( 1, knots1, points, false );
points.clear();
points.push_back( OSG::Pnt2f(1,1) );
points.push_back( OSG::Pnt2f(1,0) );
surface2->addCurve( 1, knots1, points, false );
// set up dimensions and knot vectors:
surface2->setDimU( 3 );
surface2->setDimV( 3 );
surface2->editMFKnotsU()->clear();
surface2->editMFKnotsU()->push_back( 1 );
surface2->editMFKnotsU()->push_back( 1 );
surface2->editMFKnotsU()->push_back( 1 );
surface2->editMFKnotsU()->push_back( 1 );
surface2->editMFKnotsU()->push_back( 2 );
surface2->editMFKnotsU()->push_back( 2 );
surface2->editMFKnotsU()->push_back( 2 );
surface2->editMFKnotsU()->push_back( 2 );
surface2->editMFKnotsV()->clear();
surface2->editMFKnotsV()->push_back( 0 );
surface2->editMFKnotsV()->push_back( 0 );
surface2->editMFKnotsV()->push_back( 0 );
surface2->editMFKnotsV()->push_back( 0 );
surface2->editMFKnotsV()->push_back( 1 );
surface2->editMFKnotsV()->push_back( 1 );
surface2->editMFKnotsV()->push_back( 1 );
surface2->editMFKnotsV()->push_back( 1 );
// set control points
surface2->setControlPoints( cps2 );
// set error
surface2->setError( g_error2 );
// and finally set the material
surface2->setMaterial( gpcl_defaultmat );
surf1->setCore( surface1 );
surf2->setCore( surface2 );
gpcl_surface1 = surface1;
gpcl_surface2 = surface2;
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;
}
