std::string OgreNodeHandler::createUniqueName(const X3DAttributes &attr, const std::string& prefix)
{
if (attr.isDEF())
return attr.getDEF();
string result;
result.append(prefix);
result.append(StringConverter::toString(++_objCount));
return result;
}
int X3DXIOTNodeHandler::startShape(const X3DAttributes &attr)
{
#ifdef _DEBUG
std::cout << "Start Shape event" << std::endl;
for (size_t i = 0; i < static_cast<int>(attr.getLength()); i++)
std::cout << attr.getAttributeName(static_cast<int>(i)) << std::endl;
if (attr.isDEF())
std::cout << attr.getDEF() << std::endl;
#endif
return CONTINUE;
}
int OgreNodeHandler::startShape(const X3DAttributes &attr) {
std::cout << "Start Shape" << std::endl;
if (attr.isUSE()) {
_currentEntity = _sceneManager->getEntity(attr.getUSE())->clone(createUniqueName(attr, "shapeUSE"));
} else {
// We can not create a entity yet, because Ogre does not
// allow an entity without a mesh. So we create the entity as
// soon as we have a mesh
_shapeName = attr.isDEF() ? attr.getDEF() : createUniqueName(attr, "shape");
}
return 1;
}
int X3DXIOTNodeHandler::startCoordinate(const X3DAttributes &attr)
{
int index = attr.getAttributeIndex(ID::point);
if (index == -1)
{
//TODO: warn user instead
//throw std::runtime_error("No points given within Coordinate node");
return SKIP_CHILDREN;
}
MFVec3f points;
attr.getMFVec3f(index,points);
unsigned count = points.size();
if (count == 0)
return SKIP_CHILDREN;
ccPointCloud* cloud = new ccPointCloud(attr.isDEF() ? attr.getDEF().c_str() : 0);
if (!cloud->reserve(count))
{
//not enough memory!
delete cloud;
return SKIP_CHILDREN;
}
for (MFVec3f::const_iterator it=points.begin(); it!=points.end(); ++it)
cloud->addPoint(CCVector3(it->x,it->y,it->z));
assert(m_currentLeaf);
m_currentLeaf->addChild(cloud);
//cloud = parent vertices?
if (m_currentLeaf->isKindOf(CC_MESH))
{
ccGenericMesh* mesh = ccHObjectCaster::ToGenericMesh(m_currentLeaf);
if (mesh->getAssociatedCloud()==0)
{
mesh->setAssociatedCloud(cloud);
cloud->setVisible(false);
}
}
m_currentLeaf = cloud;
return CONTINUE;
}
int X3DXIOTNodeHandler::startIndexedFaceSet(const X3DAttributes &attr)
{
std::cout << "Start IndexedFaceSet" << std::endl;
ccMesh* mesh = new ccMesh(0);
unsigned realFaceNumber=0;
if (attr.isDEF())
mesh->setName(attr.getDEF().c_str());
//Vertices indexes
int vertIndex = attr.getAttributeIndex(ID::coordIndex);
if (vertIndex != -1)
{
MFInt32 streamIndexes;
attr.getMFInt32(vertIndex,streamIndexes);
int triIndexes[3];
int pos=0;
for (MFInt32::const_iterator it = streamIndexes.begin(); it != streamIndexes.end(); ++it)
{
if (*it == -1) //end of polygon
{
if (pos<3)
{
//incomplete dataset?
//TODO: warn user
}
pos = 0;
++realFaceNumber;
}
else //new vertex index
{
if (pos<3)
{
triIndexes[pos]=*it;
}
else
{
//FIXME: simplistic fan triangulation (hum, hum)
triIndexes[1]=triIndexes[2];
triIndexes[2]=*it;
}
++pos;
}
//new face
if (pos==3)
{
//we check that we are at the end of the polygon (we don't handle non triangular meshes yet!)
if (it+1 == streamIndexes.end() || *(it+1)==-1)
{
//we must reserve some more space for storage!
if (mesh->size() == mesh->maxSize())
{
if (!mesh->reserve(mesh->maxSize() + 100))
{
delete mesh;
return ABORT; //not enough memory!
}
}
mesh->addTriangle(triIndexes[0],triIndexes[1],triIndexes[2]);
}
else
{
//TODO: we don't handle non triangle faces yet!
}
}
}
if (mesh->size() < mesh->maxSize())
{
//unhandled type of mesh
if (mesh->size()==0)
{
delete mesh;
return SKIP_CHILDREN;
}
mesh->resize(mesh->size());
}
}
//Normals (per face)
int normIndex = attr.getAttributeIndex(ID::normalIndex);
if (normIndex != -1)
{
//per-triangle normals!
if (mesh->size() == realFaceNumber)
{
if (mesh->reservePerTriangleNormalIndexes())
{
MFInt32 perFaceNormIndexes;
attr.getMFInt32(normIndex,perFaceNormIndexes);
for (unsigned i=0;i<perFaceNormIndexes.size();++i)
mesh->addTriangleNormalIndexes(i,i,i);
mesh->showTriNorms(true);
}
else
{
//TODO: not enough memory!
}
}
else
{
//TODO: we can't load per-face normals with non-triangular meshes yet!
}
}
//Normals (per vertex)
// normIndex = attr.getAttributeIndex(ID::normalPerVertex);
// bool perVertexNormals=(normIndex != -1 ? attr.getSFBool(normIndex) : true);
//DGM: in fact we don't care
assert(m_currentLeaf);
mesh->setVisible(true);
m_currentLeaf->addChild(mesh);
m_currentLeaf = mesh;
return CONTINUE;
}
