+//=======================================================================
+/*!
+ * Implementation of Reduced algorithm (meshing with quadrangles only)
+ */
+//=======================================================================
+bool StdMeshers_Quadrangle_2D::ComputeReduced (SMESH_Mesh & aMesh,
+ const TopoDS_Shape& aShape,
+ FaceQuadStruct* quad)
+{
+ SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
+ const TopoDS_Face& F = TopoDS::Face(aShape);
+ Handle(Geom_Surface) S = BRep_Tool::Surface(F);
+ int i,j,geomFaceID = meshDS->ShapeToIndex(F);
+
+ int nb = quad->side[0]->NbPoints();
+ int nr = quad->side[1]->NbPoints();
+ int nt = quad->side[2]->NbPoints();
+ int nl = quad->side[3]->NbPoints();
+
+ // Simple Reduce 8->6->4->2 (3 steps) Multiple Reduce 8->2 (1 step)
+ //
+ // .-----.-----.-----.-----. .-----.-----.-----.-----.
+ // | / \ | / \ | | / \ | / \ |
+ // | / .--.--. \ | | / \ | / \ |
+ // | / / | \ \ | | / .----.----. \ |
+ // .---.---.---.---.---.---. | / / \ | / \ \ |
+ // | / / \ | / \ \ | | / / \ | / \ \ |
+ // | / / .-.-. \ \ | | / / .---.---. \ \ |
+ // | / / / | \ \ \ | | / / / \ | / \ \ \ |
+ // .--.--.--.--.--.--.--.--. | / / / \ | / \ \ \ |
+ // | / / / \ | / \ \ \ | | / / / .-.-. \ \ \ |
+ // | / / / .-.-. \ \ \ | | / / / / | \ \ \ \ |
+ // | / / / / | \ \ \ \ | | / / / / | \ \ \ \ |
+ // .-.-.-.--.--.--.--.-.-.-. .-.-.-.--.--.--.--.-.-.-.
+
+ bool MultipleReduce = false;
+ {
+ int nb1 = nb;
+ int nr1 = nr;
+ int nt1 = nt;
+ int nl1 = nl;
+
+ if (nr == nl) {
+ if (nb < nt) {
+ nt1 = nb;
+ nb1 = nt;
+ }
+ }
+ else if (nb == nt) {
+ nl1 = nb; // and == nt
+ nr1 = nb; // and == nt
+ if (nl < nr) {
+ nt1 = nl;
+ nb1 = nr;
+ }
+ else {
+ nt1 = nr;
+ nb1 = nl;
+ }
+ }
+ else {
+ return false;
+ }
+
+ // number of rows and columns
+ int nrows = nr1 - 1; // and also == nl1 - 1
+ int ncol_top = nt1 - 1;
+ int ncol_bot = nb1 - 1;
+ int npair_top = ncol_top / 2;
+ // maximum number of bottom elements for "linear" simple reduce
+ //int max_lin = ncol_top + npair_top * 2 * nrows;
+ // maximum number of bottom elements for "tree" simple reduce
+ int max_tree = npair_top * pow(2, nrows + 1);
+ if (ncol_top > npair_top * 2) {
+ int delta = ncol_bot - max_tree;
+ for (int irow = 1; irow < nrows; irow++) {
+ int nfour = delta / 4;
+ delta -= nfour*2;
+ }
+ if (delta <= (ncol_top - npair_top * 2))
+ max_tree = ncol_bot;
+ }
+
+ if (ncol_bot > max_tree)
+ MultipleReduce = true;
+ }
+
+ if (MultipleReduce) { // == ComputeQuadPref QUAD_QUADRANGLE_PREF_REVERSED
+ //==================================================
+ int dh = abs(nb-nt);
+ int dv = abs(nr-nl);
+
+ if (dh >= dv) {
+ if (nt > nb) {
+ // it is a base case => not shift quad but may be replacement is need
+ ShiftQuad(quad,0,true);
+ }
+ else {
+ // we have to shift quad on 2
+ ShiftQuad(quad,2,true);
+ }
+ }
+ else {
+ if (nr > nl) {
+ // we have to shift quad on 1
+ ShiftQuad(quad,1,true);
+ }
+ else {
+ // we have to shift quad on 3
+ ShiftQuad(quad,3,true);
+ }
+ }
+
+ nb = quad->side[0]->NbPoints();
+ nr = quad->side[1]->NbPoints();
+ nt = quad->side[2]->NbPoints();
+ nl = quad->side[3]->NbPoints();
+ dh = abs(nb-nt);
+ dv = abs(nr-nl);
+ int nbh = Max(nb,nt);
+ int nbv = Max(nr,nl);
+ int addh = 0;
+ int addv = 0;
+
+ if (dh>dv) {
+ addv = (dh-dv)/2;
+ nbv = nbv + addv;
+ }
+ else { // dv>=dh
+ addh = (dv-dh)/2;
+ nbh = nbh + addh;
+ }
+
+ const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0);
+ const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
+ const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1);
+ const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
+
+ if (uv_eb.size() != nb || uv_er.size() != nr || uv_et.size() != nt || uv_el.size() != nl)
+ return error(COMPERR_BAD_INPUT_MESH);
+
+ // arrays for normalized params
+ TColStd_SequenceOfReal npb, npr, npt, npl;
+ for (j = 0; j < nb; j++) {
+ npb.Append(uv_eb[j].normParam);
+ }
+ for (i = 0; i < nr; i++) {
+ npr.Append(uv_er[i].normParam);
+ }
+ for (j = 0; j < nt; j++) {
+ npt.Append(uv_et[j].normParam);
+ }
+ for (i = 0; i < nl; i++) {
+ npl.Append(uv_el[i].normParam);
+ }
+
+ int dl,dr;
+ // orientation of face and 3 main domain for future faces
+ // 0 top 1
+ // 1------------1
+ // | | | |
+ // | | | |
+ // | L | | R |
+ // left | | | | rigth
+ // | / \ |
+ // | / C \ |
+ // |/ \|
+ // 0------------0
+ // 0 bottom 1
+
+ // add some params to right and left after the first param
+ // insert to right
+ dr = nbv - nr;
+ double dpr = (npr.Value(2) - npr.Value(1))/(dr+1);
+ for (i=1; i<=dr; i++) {
+ npr.InsertAfter(1,npr.Value(2)-dpr);
+ }
+ // insert to left
+ dl = nbv - nl;
+ dpr = (npl.Value(2) - npl.Value(1))/(dl+1);
+ for (i=1; i<=dl; i++) {
+ npl.InsertAfter(1,npl.Value(2)-dpr);
+ }
+
+ gp_XY a0 (uv_eb.front().u, uv_eb.front().v);
+ gp_XY a1 (uv_eb.back().u, uv_eb.back().v);
+ gp_XY a2 (uv_et.back().u, uv_et.back().v);
+ gp_XY a3 (uv_et.front().u, uv_et.front().v);
+
+ int nnn = Min(nr,nl);
+ // auxilary sequence of XY for creation nodes
+ // in the bottom part of central domain
+ // it's length must be == nbv-nnn-1
+ TColgp_SequenceOfXY UVL;
+ TColgp_SequenceOfXY UVR;
+ //==================================================
+
+ // step1: create faces for left domain
+ StdMeshers_Array2OfNode NodesL(1,dl+1,1,nl);
+ // add left nodes
+ for (j=1; j<=nl; j++)
+ NodesL.SetValue(1,j,uv_el[j-1].node);
+ if (dl>0) {
+ // add top nodes
+ for (i=1; i<=dl; i++)
+ NodesL.SetValue(i+1,nl,uv_et[i].node);
+ // create and add needed nodes
+ TColgp_SequenceOfXY UVtmp;
+ for (i=1; i<=dl; i++) {
+ double x0 = npt.Value(i+1);
+ double x1 = x0;
+ // diagonal node
+ double y0 = npl.Value(i+1);
+ double y1 = npr.Value(i+1);
+ gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
+ gp_Pnt P = S->Value(UV.X(),UV.Y());
+ SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
+ NodesL.SetValue(i+1,1,N);
+ if (UVL.Length()<nbv-nnn-1) UVL.Append(UV);
+ // internal nodes
+ for (j=2; j<nl; j++) {
+ double y0 = npl.Value(dl+j);
+ double y1 = npr.Value(dl+j);
+ gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
+ gp_Pnt P = S->Value(UV.X(),UV.Y());
+ SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
+ NodesL.SetValue(i+1,j,N);
+ if (i==dl) UVtmp.Append(UV);
+ }
+ }
+ for (i=1; i<=UVtmp.Length() && UVL.Length()<nbv-nnn-1; i++) {
+ UVL.Append(UVtmp.Value(i));
+ }
+ // create faces
+ for (i=1; i<=dl; i++) {
+ for (j=1; j<nl; j++) {
+ SMDS_MeshFace* F =
+ myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i+1,j),
+ NodesL.Value(i+1,j+1), NodesL.Value(i,j+1));
+ if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
+ }
+ }
+ }
+ else {
+ // fill UVL using c2d
+ for (i=1; i<npl.Length() && UVL.Length()<nbv-nnn-1; i++) {
+ UVL.Append(gp_UV (uv_el[i].u, uv_el[i].v));
+ }
+ }
+
+ // step2: create faces for right domain
+ StdMeshers_Array2OfNode NodesR(1,dr+1,1,nr);
+ // add right nodes
+ for (j=1; j<=nr; j++)
+ NodesR.SetValue(1,j,uv_er[nr-j].node);
+ if (dr>0) {
+ // add top nodes
+ for (i=1; i<=dr; i++)
+ NodesR.SetValue(i+1,1,uv_et[nt-1-i].node);
+ // create and add needed nodes
+ TColgp_SequenceOfXY UVtmp;
+ for (i=1; i<=dr; i++) {
+ double x0 = npt.Value(nt-i);
+ double x1 = x0;
+ // diagonal node
+ double y0 = npl.Value(i+1);
+ double y1 = npr.Value(i+1);
+ gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
+ gp_Pnt P = S->Value(UV.X(),UV.Y());
+ SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
+ NodesR.SetValue(i+1,nr,N);
+ if (UVR.Length()<nbv-nnn-1) UVR.Append(UV);
+ // internal nodes
+ for (j=2; j<nr; j++) {
+ double y0 = npl.Value(nbv-j+1);
+ double y1 = npr.Value(nbv-j+1);
+ gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
+ gp_Pnt P = S->Value(UV.X(),UV.Y());
+ SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
+ NodesR.SetValue(i+1,j,N);
+ if (i==dr) UVtmp.Prepend(UV);
+ }
+ }
+ for (i=1; i<=UVtmp.Length() && UVR.Length()<nbv-nnn-1; i++) {
+ UVR.Append(UVtmp.Value(i));
+ }
+ // create faces
+ for (i=1; i<=dr; i++) {
+ for (j=1; j<nr; j++) {
+ SMDS_MeshFace* F =
+ myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i+1,j),
+ NodesR.Value(i+1,j+1), NodesR.Value(i,j+1));
+ if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
+ }
+ }
+ }
+ else {
+ // fill UVR using c2d
+ for (i=1; i<npr.Length() && UVR.Length()<nbv-nnn-1; i++) {
+ UVR.Append(gp_UV(uv_er[i].u, uv_er[i].v));
+ }
+ }
+
+ // step3: create faces for central domain
+ StdMeshers_Array2OfNode NodesC(1,nb,1,nbv);
+ // add first string using NodesL
+ for (i=1; i<=dl+1; i++)
+ NodesC.SetValue(1,i,NodesL(i,1));
+ for (i=2; i<=nl; i++)
+ NodesC.SetValue(1,dl+i,NodesL(dl+1,i));
+ // add last string using NodesR
+ for (i=1; i<=dr+1; i++)
+ NodesC.SetValue(nb,i,NodesR(i,nr));
+ for (i=1; i<nr; i++)
+ NodesC.SetValue(nb,dr+i+1,NodesR(dr+1,nr-i));
+ // add top nodes (last columns)
+ for (i=dl+2; i<nbh-dr; i++)
+ NodesC.SetValue(i-dl,nbv,uv_et[i-1].node);
+ // add bottom nodes (first columns)
+ for (i=2; i<nb; i++)
+ NodesC.SetValue(i,1,uv_eb[i-1].node);
+
+ // create and add needed nodes
+ // add linear layers
+ for (i=2; i<nb; i++) {
+ double x0 = npt.Value(dl+i);
+ double x1 = x0;
+ for (j=1; j<nnn; j++) {
+ double y0 = npl.Value(nbv-nnn+j);
+ double y1 = npr.Value(nbv-nnn+j);
+ gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
+ gp_Pnt P = S->Value(UV.X(),UV.Y());
+ SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
+ NodesC.SetValue(i,nbv-nnn+j,N);
+ }
+ }
+ // add diagonal layers
+ for (i=1; i<nbv-nnn; i++) {
+ double du = UVR.Value(i).X() - UVL.Value(i).X();
+ double dv = UVR.Value(i).Y() - UVL.Value(i).Y();
+ for (j=2; j<nb; j++) {
+ double u = UVL.Value(i).X() + du*npb.Value(j);
+ double v = UVL.Value(i).Y() + dv*npb.Value(j);
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(N, geomFaceID, u, v);
+ NodesC.SetValue(j,i+1,N);
+ }
+ }
+ // create faces
+ for (i=1; i<nb; i++) {
+ for (j=1; j<nbv; j++) {
+ SMDS_MeshFace* F =
+ myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
+ NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
+ if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
+ }
+ }
+ // TODO ???
+ } // end Multiple Reduce implementation
+ else { // Simple Reduce (!MultipleReduce)
+ //=========================================================
+ if (nr == nl) {
+ if (nt < nb) {
+ // it is a base case => not shift quad
+ //ShiftQuad(quad,0,true);
+ }
+ else {
+ // we have to shift quad on 2
+ ShiftQuad(quad,2,true);
+ }
+ }
+ else {
+ if (nl > nr) {
+ // we have to shift quad on 1
+ ShiftQuad(quad,1,true);
+ }
+ else {
+ // we have to shift quad on 3
+ ShiftQuad(quad,3,true);
+ }
+ }
+
+ nb = quad->side[0]->NbPoints();
+ nr = quad->side[1]->NbPoints();
+ nt = quad->side[2]->NbPoints();
+ nl = quad->side[3]->NbPoints();
+
+ // number of rows and columns
+ int nrows = nr - 1; // and also == nl - 1
+ int ncol_top = nt - 1;
+ int ncol_bot = nb - 1;
+ int npair_top = ncol_top / 2;
+ // maximum number of bottom elements for "linear" simple reduce
+ int max_lin = ncol_top + npair_top * 2 * nrows;
+ // maximum number of bottom elements for "tree" simple reduce
+ //int max_tree = npair_top * pow(2, nrows + 1);
+
+ //if (ncol_bot > max_tree)
+ // MultipleReduce = true;
+
+ const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0);
+ const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
+ const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1);
+ const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
+
+ if (uv_eb.size() != nb || uv_er.size() != nr || uv_et.size() != nt || uv_el.size() != nl)
+ return error(COMPERR_BAD_INPUT_MESH);
+
+ // arrays for normalized params
+ TColStd_SequenceOfReal npb, npr, npt, npl;
+ for (j = 0; j < nb; j++) {
+ npb.Append(uv_eb[j].normParam);
+ }
+ for (i = 0; i < nr; i++) {
+ npr.Append(uv_er[i].normParam);
+ }
+ for (j = 0; j < nt; j++) {
+ npt.Append(uv_et[j].normParam);
+ }
+ for (i = 0; i < nl; i++) {
+ npl.Append(uv_el[i].normParam);
+ }
+
+ // We will ajust new points to this grid
+ if (!SetNormalizedGrid(aMesh, aShape, quad))
+ return false;
+
+ // TODO ???
+ gp_XY a0 (uv_eb.front().u, uv_eb.front().v);
+ gp_XY a1 (uv_eb.back().u, uv_eb.back().v);
+ gp_XY a2 (uv_et.back().u, uv_et.back().v);
+ gp_XY a3 (uv_et.front().u, uv_et.front().v);
+ //=========================================================
+
+ TColStd_SequenceOfInteger curr_base, next_base;
+ TColStd_SequenceOfReal curr_par_u, curr_par_v;
+ TColStd_SequenceOfReal next_par_u, next_par_v;
+ StdMeshers_Array2OfNode NodesBRD (1,nb, 1,nr);
+ for (j = 1; j <= nb; j++) {
+ NodesBRD.SetValue(j, 1, uv_eb[j - 1].node); // bottom
+ curr_base.Append(j);
+ next_base.Append(-1);
+ curr_par_u.Append(uv_eb[j-1].u);
+ curr_par_v.Append(uv_eb[j-1].v);
+ next_par_u.Append(0.);
+ next_par_v.Append(0.);
+ }
+ for (j = 1; j <= nt; j++) {
+ NodesBRD.SetValue(j, nr, uv_et[j - 1].node); // top
+ }
+
+ int curr_base_len = nb;
+ int next_base_len = 0;
+
+ if (ncol_bot > max_lin) {
+ // "tree" simple reduce 2->4->8->16->32->...
+ //
+ // .---------------.---------------.---------------.---------------. nr
+ // | \ | / | \ | / |
+ // | \ .-------.-------. / | \ .-------.-------. / |
+ // | | | | | | | | |
+ // .-------.-------.-------.-------.-------.-------.-------.-------.
+ // |\ | /|\ | /|\ | /|\ | /|
+ // | \.---.---./ | \.---.---./ | \.---.---./ | \.---.---./ | i
+ // | | | | | | | | | | | | | | | | |
+ // .---.---.---.---.---.---.---.---.---.---.---.---.---.---.---.---.
+ // |\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|
+ // | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. |
+ // | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+ // .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-. 1
+ // 1 j nb
+
+ for (i = 1; i < nr; i++) { // layer by layer
+ // left
+ NodesBRD.SetValue(1, i+1, uv_el[i].node);
+ next_base.SetValue(++next_base_len, 1);
+ // right
+ NodesBRD.SetValue(nb, i+1, uv_er[i].node);
+
+ next_par_u.SetValue(next_base_len, uv_el[i].u);
+ next_par_v.SetValue(next_base_len, uv_el[i].v);
+
+ // to stop reducing, if number of nodes reaches nt
+ int delta = curr_base_len - nt;
+
+ //double du = uv_er[i].u - uv_el[i].u;
+ //double dv = uv_er[i].v - uv_el[i].v;
+
+ // to calculate normalized parameter, we must know number of points in next layer
+ int nb_four = (curr_base_len - 1) / 4;
+ int nb_next = nb_four*2 + (curr_base_len - nb_four*4);
+ if (nb_next < nt) nb_next = nt;
+
+ for (j = 1; j + 4 <= curr_base_len && delta > 0; j += 4, delta -= 2) {
+ // add one "HH": nodes a,b,c,d,e and faces 1,2,3,4,5,6
+ //
+ // .-----a-----b i + 1
+ // |\ 5 | 6 /|
+ // | \ | / |
+ // | c--d--e |
+ // |1 |2 |3 |4 |
+ // | | | | |
+ // .--.--.--.--. i
+ //
+ // j j+2 j+4
+
+ double u,v;
+
+ // a (i + 1, j + 2)
+ const SMDS_MeshNode* Na;
+ next_base_len++;
+ next_base.SetValue(next_base_len, curr_base.Value(j + 2));
+ if (i + 1 == nr) { // top
+ Na = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else {
+ //double norm_par = double(next_base_len - 1)/double(nb_next - 1);
+ //u = uv_el[i].u + du * norm_par;
+ //v = uv_el[i].v + dv * norm_par;
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ //u = uv_el[i].u + du*npb.Value(curr_base.Value(j + 2));
+ //v = uv_el[i].v + dv*npb.Value(curr_base.Value(j + 2));
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Na1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Na1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na1);
+ Na = Na1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+
+ // b (i + 1, j + 4)
+ const SMDS_MeshNode* Nb;
+ next_base_len++;
+ next_base.SetValue(next_base_len, curr_base.Value(j + 4));
+ if (i + 1 == nr) { // top
+ Nb = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else if (j + 4 == curr_base_len) { // right
+ Nb = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
+ u = uv_er[i].u;
+ v = uv_er[i].v;
+ }
+ else {
+ //double norm_par = double(next_base_len - 1)/double(nb_next - 1);
+ //u = uv_el[i].u + du * norm_par;
+ //v = uv_el[i].v + dv * norm_par;
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ //u = uv_el[i].u + du*npb.Value(curr_base.Value(j + 4));
+ //v = uv_el[i].v + dv*npb.Value(curr_base.Value(j + 4));
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nb1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nb1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb1);
+ Nb = Nb1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+
+ // c
+ u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 2)) / 2.0;
+ v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 2)) / 2.0;
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nc = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nc, geomFaceID, u, v);
+
+ // d
+ u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 1)) / 2.0;
+ v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 1)) / 2.0;
+ P = S->Value(u,v);
+ SMDS_MeshNode* Nd = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nd, geomFaceID, u, v);
+
+ // e
+ u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len)) / 2.0;
+ v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len)) / 2.0;
+ P = S->Value(u,v);
+ SMDS_MeshNode* Ne = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Ne, geomFaceID, u, v);
+
+ // Faces
+ SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 0), i),
+ NodesBRD.Value(curr_base.Value(j + 1), i),
+ Nc,
+ NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
+ if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
+
+ SMDS_MeshFace* F2 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 1), i),
+ NodesBRD.Value(curr_base.Value(j + 2), i),
+ Nd, Nc);
+ if (F2) meshDS->SetMeshElementOnShape(F2, geomFaceID);
+
+ SMDS_MeshFace* F3 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 2), i),
+ NodesBRD.Value(curr_base.Value(j + 3), i),
+ Ne, Nd);
+ if (F3) meshDS->SetMeshElementOnShape(F3, geomFaceID);
+
+ SMDS_MeshFace* F4 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 3), i),
+ NodesBRD.Value(curr_base.Value(j + 4), i),
+ Nb, Ne);
+ if (F4) meshDS->SetMeshElementOnShape(F4, geomFaceID);
+
+ SMDS_MeshFace* F5 = myTool->AddFace(Nc, Nd, Na,
+ NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
+ if (F5) meshDS->SetMeshElementOnShape(F5, geomFaceID);
+
+ SMDS_MeshFace* F6 = myTool->AddFace(Nd, Ne, Nb, Na);
+ if (F6) meshDS->SetMeshElementOnShape(F6, geomFaceID);
+ }
+
+ // not reduced side elements (if any)
+ for (; j < curr_base_len; j++) {
+ // f (i + 1, j + 1)
+ const SMDS_MeshNode* Nf;
+ double u,v;
+ next_base.SetValue(++next_base_len, curr_base.Value(j + 1));
+ if (i + 1 == nr) { // top
+ Nf = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else if (j + 1 == curr_base_len) { // right
+ Nf = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
+ u = uv_er[i].u;
+ v = uv_er[i].v;
+ }
+ else {
+ //double norm_par = double(next_base_len - 1)/double(nb_next - 1);
+ //u = uv_el[i].u + du * norm_par;
+ //v = uv_el[i].v + dv * norm_par;
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ //u = uv_el[i].u + du*npb.Value(curr_base.Value(j + 1));
+ //v = uv_el[i].v + dv*npb.Value(curr_base.Value(j + 1));
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
+ Nf = Nf1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+ SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j), i),
+ NodesBRD.Value(curr_base.Value(j + 1), i),
+ NodesBRD.Value(next_base.Value(next_base_len), i + 1),
+ NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
+ if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
+ }
+
+ curr_base_len = next_base_len;
+ curr_base = next_base;
+ curr_par_u = next_par_u;
+ curr_par_v = next_par_v;
+ next_base_len = 0;
+ }
+ } // end "tree" simple reduce
+ else {
+ // "linear" simple reduce 4->8->12->16 (3 steps)
+ //
+ // .---------------.---------------.---------------.---------------. nr
+ // | \ | / | \ | / |
+ // | \ .-------.-------. / | \ .-------.-------. / |
+ // | | | | | | | | |
+ // .-------.-------.-------.-------.-------.-------.-------.-------.
+ // | / \ | / \ | / \ | / \ |
+ // | / \.----.----./ \ | / \.----.----./ \ | i
+ // | / | | | \ | / | | | \ |
+ // .-----.----.----.----.----.-----.-----.----.----.----.----.-----.
+ // | / / \ | / \ \ | / / \ | / \ \ |
+ // | / / .-.-. \ \ | / / .-.-. \ \ |
+ // | / / / | \ \ \ | / / / | \ \ \ |
+ // .---.---.---.---.---.---.---.---.---.---.---.---.---.---.---.---. 1
+ // 1 j nb
+
+ // nt = 5, nb = 7, nr = 4
+ //int delta_all = 2;
+ //int delta_one_col = 6;
+ //int nb_col = 0;
+ //int remainder = 2;
+ //if (remainder > 0) nb_col++;
+ //nb_col = 1;
+ //int free_left = 1;
+ //free_left += 2;
+ //int free_middle = 4;
+
+ int delta_all = nb - nt;
+ int delta_one_col = (nr - 1) * 2;
+ int nb_col = delta_all / delta_one_col;
+ int remainder = delta_all - nb_col * delta_one_col;
+ if (remainder > 0) {
+ nb_col++;
+ }
+ int free_left = ((nt - 1) - nb_col * 2) / 2;
+ free_left += nr - 2;
+ int free_middle = (nr - 2) * 2;
+ if (remainder > 0 && nb_col == 1) {
+ int nb_rows_short_col = remainder / 2;
+ int nb_rows_thrown = (nr - 1) - nb_rows_short_col;
+ free_left -= nb_rows_thrown;
+ }
+
+ // nt = 5, nb = 17, nr = 4
+ //int delta_all = 12;
+ //int delta_one_col = 6;
+ //int nb_col = 2;
+ //int remainder = 0;
+ //int free_left = 2;
+ //int free_middle = 4;
+
+ for (i = 1; i < nr; i++, free_middle -= 2, free_left -= 1) { // layer by layer
+ // left
+ NodesBRD.SetValue(1, i+1, uv_el[i].node);
+ next_base.SetValue(++next_base_len, 1);
+ // right
+ NodesBRD.SetValue(nb, i+1, uv_er[i].node);
+
+ // left
+ next_par_u.SetValue(next_base_len, uv_el[i].u);
+ next_par_v.SetValue(next_base_len, uv_el[i].v);
+
+ // to calculate normalized parameter, we must know number of points in next layer
+ int nb_next = curr_base_len - nb_col * 2;
+ if (remainder > 0 && i > remainder / 2)
+ // take into account short "column"
+ nb_next += 2;
+ if (nb_next < nt) nb_next = nt;
+
+ // not reduced left elements
+ for (j = 1; j <= free_left; j++) {
+ // f (i + 1, j + 1)
+ const SMDS_MeshNode* Nf;
+ double u,v;
+ next_base.SetValue(++next_base_len, curr_base.Value(j + 1));
+ if (i + 1 == nr) { // top
+ Nf = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else {
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
+ Nf = Nf1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+ SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j), i),
+ NodesBRD.Value(curr_base.Value(j + 1), i),
+ NodesBRD.Value(next_base.Value(next_base_len), i + 1),
+ NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
+ if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
+ }
+
+ for (int icol = 1; icol <= nb_col; icol++) {
+
+ if (remainder > 0 && icol == nb_col && i > remainder / 2)
+ // stop short "column"
+ break;
+
+ // add one "HH": nodes a,b,c,d,e and faces 1,2,3,4,5,6
+ //
+ // .-----a-----b i + 1
+ // |\ 5 | 6 /|
+ // | \ | / |
+ // | c--d--e |
+ // |1 |2 |3 |4 |
+ // | | | | |
+ // .--.--.--.--. i
+ //
+ // j j+2 j+4
+
+ double u,v;
+
+ // a (i + 1, j + 2)
+ const SMDS_MeshNode* Na;
+ next_base_len++;
+ next_base.SetValue(next_base_len, curr_base.Value(j + 2));
+ if (i + 1 == nr) { // top
+ Na = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else {
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Na1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Na1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na1);
+ Na = Na1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+
+ // b (i + 1, j + 4)
+ const SMDS_MeshNode* Nb;
+ next_base_len++;
+ next_base.SetValue(next_base_len, curr_base.Value(j + 4));
+ if (i + 1 == nr) { // top
+ Nb = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else if (j + 4 == curr_base_len) { // right
+ Nb = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
+ u = uv_er[i].u;
+ v = uv_er[i].v;
+ }
+ else {
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nb1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nb1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb1);
+ Nb = Nb1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+
+ // c
+ u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 2)) / 2.0;
+ v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 2)) / 2.0;
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nc = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nc, geomFaceID, u, v);
+
+ // d
+ u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 1)) / 2.0;
+ v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 1)) / 2.0;
+ P = S->Value(u,v);
+ SMDS_MeshNode* Nd = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nd, geomFaceID, u, v);
+
+ // e
+ u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len)) / 2.0;
+ v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len)) / 2.0;
+ P = S->Value(u,v);
+ SMDS_MeshNode* Ne = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Ne, geomFaceID, u, v);
+
+ // Faces
+ SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 0), i),
+ NodesBRD.Value(curr_base.Value(j + 1), i),
+ Nc,
+ NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
+ if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
+
+ SMDS_MeshFace* F2 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 1), i),
+ NodesBRD.Value(curr_base.Value(j + 2), i),
+ Nd, Nc);
+ if (F2) meshDS->SetMeshElementOnShape(F2, geomFaceID);
+
+ SMDS_MeshFace* F3 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 2), i),
+ NodesBRD.Value(curr_base.Value(j + 3), i),
+ Ne, Nd);
+ if (F3) meshDS->SetMeshElementOnShape(F3, geomFaceID);
+
+ SMDS_MeshFace* F4 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 3), i),
+ NodesBRD.Value(curr_base.Value(j + 4), i),
+ Nb, Ne);
+ if (F4) meshDS->SetMeshElementOnShape(F4, geomFaceID);
+
+ SMDS_MeshFace* F5 = myTool->AddFace(Nc, Nd, Na,
+ NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
+ if (F5) meshDS->SetMeshElementOnShape(F5, geomFaceID);
+
+ SMDS_MeshFace* F6 = myTool->AddFace(Nd, Ne, Nb, Na);
+ if (F6) meshDS->SetMeshElementOnShape(F6, geomFaceID);
+
+ j += 4;
+
+ // not reduced middle elements
+ if (icol < nb_col) {
+ if (remainder > 0 && icol == nb_col - 1 && i > remainder / 2)
+ // pass middle elements before stopped short "column"
+ break;
+
+ int free_add = free_middle;
+ if (remainder > 0 && icol == nb_col - 1)
+ // next "column" is short
+ free_add -= (nr - 1) - (remainder / 2);
+
+ for (int imiddle = 1; imiddle <= free_add; imiddle++) {
+ // f (i + 1, j + imiddle)
+ const SMDS_MeshNode* Nf;
+ double u,v;
+ next_base.SetValue(++next_base_len, curr_base.Value(j + imiddle));
+ if (i + 1 == nr) { // top
+ Nf = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else if (j + imiddle == curr_base_len) { // right
+ Nf = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
+ u = uv_er[i].u;
+ v = uv_er[i].v;
+ }
+ else {
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
+ Nf = Nf1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+ SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j - 1 + imiddle), i),
+ NodesBRD.Value(curr_base.Value(j + imiddle), i),
+ NodesBRD.Value(next_base.Value(next_base_len), i + 1),
+ NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
+ if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
+ }
+ j += free_add;
+ }
+ }
+
+ // not reduced right elements
+ for (; j < curr_base_len; j++) {
+ // f (i + 1, j + 1)
+ const SMDS_MeshNode* Nf;
+ double u,v;
+ next_base.SetValue(++next_base_len, curr_base.Value(j + 1));
+ if (i + 1 == nr) { // top
+ Nf = uv_et[next_base_len - 1].node;
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
+ u = uv_et[next_base_len - 1].u;
+ v = uv_et[next_base_len - 1].v;
+ }
+ else if (j + 1 == curr_base_len) { // right
+ Nf = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
+ u = uv_er[i].u;
+ v = uv_er[i].v;
+ }
+ else {
+ {
+ double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
+ int nearest_node_j = (int)rel;
+ rel -= nearest_node_j;
+ int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
+ double u1 = quad->uv_grid[ij].u;
+ double v1 = quad->uv_grid[ij].v;
+ double u2 = quad->uv_grid[ij + 1].u;
+ double v2 = quad->uv_grid[ij + 1].v;
+ double duj = (u2 - u1) * rel;
+ double dvj = (v2 - v1) * rel;
+ u = u1 + duj;
+ v = v1 + dvj;
+ }
+ gp_Pnt P = S->Value(u,v);
+ SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
+ NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
+ Nf = Nf1;
+ }
+ next_par_u.SetValue(next_base_len, u);
+ next_par_v.SetValue(next_base_len, v);
+ SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j), i),
+ NodesBRD.Value(curr_base.Value(j + 1), i),
+ NodesBRD.Value(next_base.Value(next_base_len), i + 1),
+ NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
+ if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
+ }
+
+ curr_base_len = next_base_len;
+ curr_base = next_base;
+ curr_par_u = next_par_u;
+ curr_par_v = next_par_v;
+ next_base_len = 0;
+ }
+ } // end "linear" simple reduce
+ } // end Simple Reduce implementation
