OSG::NodeTransitPtr createLabeledTorus(OSG::Vec3f trans, int idx)
{
OSG::NodeTransitPtr node = OSG::Node::create();
OSG::TransformRefPtr xform = OSG::Transform::create();
OSG::Matrix mat;
// --- setup transform ------------------
mat.setIdentity();
mat.setTranslate(trans);
xform->setMatrix(mat);
node->setCore(xform);
// --- setup label ----------------------
OSG::NodeRefPtr labelNode = OSG::Node::create();
OSG::LabelRefPtr label =
(idx) ? createTextLabel(idx) : createIconLabel();
updateLabelParams(label, idx);
labelNode->setCore(label);
// --- add torus ------------------------
labelNode->addChild(OSG::makeTorus(.5, 2, 16, 16));
node->addChild(labelNode);
return node;
}
OSG::NodeTransitPtr createLabeledScene(void)
{
OSG::NodeTransitPtr scene = OSG::Node::create();
scene->setCore(OSG::Group::create());
#if 0
scene->addChild(createLabeledTorus(OSG::Vec3f( 1, 3, 0), 0));
scene->addChild(createLabeledTorus(OSG::Vec3f( 2, 3, 0), 0));
scene->addChild(createLabeledTorus(OSG::Vec3f( 4, 3, 0), 0));
#endif
scene->addChild(createLabeledTorus(OSG::Vec3f( 3, 3, 0), 0));
scene->addChild(createLabeledTorus(OSG::Vec3f( 3,-3, 0), 1));
scene->addChild(createLabeledTorus(OSG::Vec3f(-3, 3, 0), 2));
scene->addChild(createLabeledTorus(OSG::Vec3f(-3,-3, 0), 3));
return scene;
}
OSG::NodeTransitPtr createScene(void)
{
// create the scene:
OSG::TransformTransitPtr xform = OSG::Transform::create();
OSG::Matrix mat;
mat.setTranslate(OSG::Vec3f(2,0,0));
xform->setMatrix(mat);
OSG::NodeTransitPtr scene = OSG::Node::create();
scene->addChild(createLabeledScene());
scene->setCore(xform);
OSG::commitChanges();
return scene;
}
OSG::NodeTransitPtr setupAnim(void)
{
OSG::NodeTransitPtr returnValue = OSG::Node::create();
returnValue->setCore(OSG::Group::create());
static const OSG::Real32 aOffsets[6][3] =
{
{ -5.5, 0.0, 0.0 },
{ 5.5, 0.0, 0.0 },
{ 0.0, -5.5, 0.0 },
{ 0.0, 5.5, 0.0 },
{ 0.0, 0.0, -5.5 },
{ 0.0, 0.0, 5.5 }
};
static const OSG::Real32 aDiffuse[6][3] =
{
{ 1.f, 0.f, 0.f },
{ 0.f, 1.f, 0.f },
{ 0.f, 0.f, 1.f },
{ 1.f, 1.f, 0.f },
{ 1.f, 0.f, 1.f },
{ 0.f, 1.f, 1.f }
};
for(OSG::UInt32 i = 0; i < 6; ++i)
{
OSG::NodeUnrecPtr pTN = OSG::Node::create();
pAnimTrs[i] = OSG::ComponentTransform::create();
OSG::GeometryUnrecPtr pGeo = OSG::makeBoxGeo(1.f, 1.f, 1.f,
2, 2, 2);
OSG::NodeUnrecPtr pGeoNode = OSG::Node::create();
pGeoNode->setCore(pGeo);
OSG::SimpleMaterialUnrecPtr pMat = OSG::SimpleMaterial::create();
pMat->setDiffuse(OSG::Color3f(aDiffuse[i][0],
aDiffuse[i][1],
aDiffuse[i][2]));
pMat->setAmbient(OSG::Color3f(aDiffuse[i][0],
aDiffuse[i][1],
aDiffuse[i][2]));
pGeo->setMaterial(pMat);
pAnimTrs[i]->editTranslation().setValues(aOffsets[i][0],
aOffsets[i][1],
aOffsets[i][2]);
pTN->setCore (pAnimTrs[i]);
pTN->addChild(pGeoNode );
returnValue->addChild(pTN);
}
return returnValue;
}
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;
}