void CubeTetMeshFactory::buildTetsOnHex(const Teuchos::Tuple<int,3> & meshDesc,
const Teuchos::Tuple<int,3> & element,
stk_classic::mesh::Part * block,
const std::vector<stk_classic::mesh::EntityId> & h_nodes,
STK_Interface & mesh) const
{
Teuchos::FancyOStream out(Teuchos::rcpFromRef(std::cout));
out.setShowProcRank(true);
out.setOutputToRootOnly(-1);
int totalXElems = meshDesc[0]; int totalYElems = meshDesc[1]; int totalZElems = meshDesc[2];
int nx = element[0]; int ny = element[1]; int nz = element[2];
stk_classic::mesh::EntityId hex_id = totalXElems*totalYElems*nz+totalXElems*ny+nx+1;
stk_classic::mesh::EntityId gid_0 = 12*(hex_id-1)+1;
std::vector<stk_classic::mesh::EntityId> nodes(4);
// add centroid node
stk_classic::mesh::EntityId centroid = 0;
{
stk_classic::mesh::EntityId largestNode = (totalXElems+1)*(totalYElems+1)*(totalZElems+1);
centroid = hex_id+largestNode;
// compute average of coordinates
std::vector<double> coord(3,0.0);
for(std::size_t i=0;i<h_nodes.size();i++) {
const double * node_coord = mesh.getNodeCoordinates(h_nodes[i]);
coord[0] += node_coord[0];
coord[1] += node_coord[1];
coord[2] += node_coord[2];
}
coord[0] /= 8.0;
coord[1] /= 8.0;
coord[2] /= 8.0;
mesh.addNode(centroid,coord);
}
//
int idSet[][3] = { { 0, 1, 2}, // back
{ 0, 2, 3},
{ 0, 5, 1}, // bottom
{ 0, 4, 5},
{ 0, 7, 4}, // left
{ 0, 3, 7},
{ 6, 1, 5}, // right
{ 6, 2, 1},
{ 6, 3, 2}, // top
{ 6, 7, 3},
{ 6, 4, 7}, // front
{ 6, 5, 4} };
for(int i=0;i<12;i++) {
nodes[0] = h_nodes[idSet[i][0]];
nodes[1] = h_nodes[idSet[i][1]];
nodes[2] = h_nodes[idSet[i][2]];
nodes[3] = centroid;
// add element to mesh
mesh.addElement(rcp(new ElementDescriptor(gid_0+i,nodes)),block);
}
}
