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MeshTool.cpp
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MeshTool.cpp
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#include "MeshTool.h"
#include "RectRegion.h"
#include "util.h"
#include <vector>
static struct {
int nLayers;
double hFirstLayer;
double progress;
double maxLayerh;
std::vector<std::vector<double>> reses;
} BLlayer;
void setRadiusMesh(double h, double p, double m) {
BLlayer.hFirstLayer = h;
BLlayer.progress = p;
BLlayer.maxLayerh = m;
BLlayer.reses.clear();
}
void setRadiusLayers(int n) { BLlayer.nLayers = n; }
std::vector<double> radiusEdge(double s) {
int n = round(0.5 * (1. + s) * BLlayer.nLayers);
if (BLlayer.reses.size() < BLlayer.nLayers + 1) {
BLlayer.reses.clear();
std::vector<double> p0(2, 0.);
BLlayer.reses.push_back(p0);
double delta = BLlayer.hFirstLayer;
for (int n = 1; n <= BLlayer.nLayers; ++n) {
std::vector<double> p1(2, 0.);
if (delta >= BLlayer.maxLayerh)
delta = BLlayer.maxLayerh;
p1[0] = BLlayer.reses[BLlayer.reses.size() - 1][0] + delta;
delta *= BLlayer.progress;
BLlayer.reses.push_back(p1);
}
}
return BLlayer.reses[n];
}
int meshingBoundayLayer(MeshRegions ®ion, int Nslice, void *thickFunc,
void *edge0, std::string name,
std::vector<std::vector<double>> trimnorm) {
double (*ThicknessFunction)(std::vector<double>) =
(double (*)(std::vector<double>))thickFunc;
std::vector<void *> edges;
// edge 2
setRadiusLayers(1);
edges.push_back((void *)edge0);
edges.push_back((void *)radiusEdge);
edges.push_back((void *)edge0);
edges.push_back((void *)edge0);
RectRegion firstlayer(edges, name, false);
firstlayer.MeshGen(Nslice, 1, eBoundaryLayer1);
firstlayer.Tec360Pts(name + ".dat");
// get boundary points & normals
std::vector<std::vector<double>> bndpts;
std::vector<std::vector<double>> norms;
for (int i = 0; i <= Nslice; ++i) {
bndpts.push_back(firstlayer.m_pts[i]);
std::vector<double> p2 = firstlayer.m_pts[i + Nslice + 1];
double len = 0.;
for (size_t j = 0; j < p2.size(); ++j) {
p2[j] -= firstlayer.m_pts[i][j];
len += p2[j] * p2[j];
}
len = sqrt(len);
for (size_t j = 0; j < p2.size(); ++j) {
p2[j] /= len;
}
norms.push_back(p2);
}
// trim normals
if (trimnorm.size()) {
norms[0] = trimnorm[0];
norms[Nslice] = trimnorm[1];
}
// add boundary layer mesh
for (int i = 0; i < Nslice; ++i) {
std::vector<double> k =
intersect(bndpts[i], norms[i], bndpts[i + 1], norms[i + 1]);
std::vector<double> pc(bndpts[i].size());
for (size_t j = 0; j < pc.size(); ++j) {
pc[j] = 0.5 * (bndpts[i][j] + bndpts[i + 1][j]);
}
double thick = ThicknessFunction(pc);
if (k[0] > 0 && k[1] > 0) {
thick = std::min(thick, k[0]);
thick = std::min(thick, k[1]);
}
int nLayers = findNlayers(BLlayer.hFirstLayer, BLlayer.progress, thick,
BLlayer.maxLayerh);
std::vector<double> rad;
double ds = 2. / nLayers;
setRadiusLayers(nLayers);
std::vector<std::vector<double>> e0, e1;
for (int j = 0; j < nLayers; ++j) {
rad.push_back(radiusEdge(-1. + j * ds)[0]);
std::vector<double> p0 = AddVect(1., bndpts[i], rad[j], norms[i]);
std::vector<double> p1 = AddVect(1., bndpts[i + 1], rad[j], norms[i + 1]);
e0.push_back(p0);
e1.push_back(p1);
}
std::vector<std::vector<std::vector<double>>> edges(4);
edges[0].push_back(bndpts[i]);
edges[0].push_back(bndpts[i + 1]);
edges[1] = e1;
edges[2].push_back(e1[e1.size() - 1]);
edges[2].push_back(e0[e0.size() - 1]);
edges[3] = e0;
RectRegion pic(edges, "p");
pic.MeshGen(1, e0.size() - 1);
region.AddRegion(pic);
}
// region.outXml(name + ".xml");
// std::vector<int> comp2;
// comp2.push_back(0);
// region.outCOMPO(name + ".xml", comp2);
return 0;
}
int outputGeo(MeshRegions &combinedReg, std::vector<int> OutLevels) {
// outer layer
std::vector<std::vector<int>> boundary = combinedReg.extractBoundaryPoints();
std::vector<std::vector<std::vector<double>>> boxes(boundary.size());
for (int i = 0; i < boundary.size(); ++i) {
for (int j = 0; j < boundary[i].size(); ++j) {
boxes[i].push_back(combinedReg.m_pts[boundary[i][j]]);
}
}
std::map<int, std::set<int>> trees;
std::set<int> roots;
BuildTopoTree(boxes, trees, roots);
std::vector<int> levels(boxes.size(), 0);
int r0 = *roots.begin();
FindTreesDepths(r0, 0, trees, levels);
int filen = 0;
for (auto l : OutLevels) {
for (size_t i = 0; i < levels.size(); ++i) {
if (l == levels[i]) {
std::vector<std::vector<std::vector<double>>> tmparray;
for (auto p : trees[i]) {
tmparray.push_back(boxes[p]);
}
OutGeo("FarField" + std::to_string(filen) + ".geo", boxes[i], tmparray);
++filen;
}
}
}
return 0;
}