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Test.cpp
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Test.cpp
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#include "Test.h"
clock_t Test::begin;
clock_t Test::end;
void Test::test_Nurbs_curvature()
{
NURBSSurface surface;
surface.loadNURBS("../out/nurbs/venus_front.cpt");
surface.draw(Window::viewer, false, true, 0.01);
Window w;
w.launch();
}
void Test::test_TsplineSimplify()
{
vector<int> a{ 8,9,7,4,3,5 };
vector<int> index(a.size());
iota(index.begin(), index.end(), 0);
sort(index.begin(), index.end(), [a](int id1, int id2) {return a[id1] > a[id2]; });
for (int i = 0; i < index.size(); i++) {
cout << "id: " << index[i] << "; value: " << a[index[i]] << endl;
}
NURBSSurface surface;
surface.loadNURBS("../out/nurbs/venus_front.cpt");
//surface.draw(Window::viewer, false, true);
/*Window w;
w.launch();*/
Mesh3d tspline;
t_mesh::TsplineSimplify(surface, tspline,20, 5e-3);
tspline.saveMesh("../out/tspline/fuck");
MeshRender render(&tspline, false, true, true);
render.launch();
}
void Test::test_venus_skinning()
{
string modelname = "head";
BsplineVolume volume;
volume.readVolume("../out/volume/" + modelname + "_bspline.txt");
const int curves_num = volume.knot_vector[2].size() - 6;
vector<NURBSCurve> curves(curves_num);
uniform_int_distribution<unsigned> u(15, 30);
default_random_engine e;
default_random_engine e1;
uniform_real_distribution<double> u1(0, 1);
for (int i = 0; i < curves_num; i++) {
int sampleNum = u(e);
cout << i << " sample " << sampleNum << " points" << endl;
Eigen::MatrixXd points(sampleNum+2, 3);
double z = volume.knot_vector[2](i + 3);
vector<double> x_coors;
x_coors.push_back(0);
x_coors.push_back(1);
for (int j = 0; j < sampleNum; j++) {
x_coors.push_back(u1(e1));
}
sort(x_coors.begin(), x_coors.end());
for (int j = 0; j < x_coors.size(); j++) {
points.row(j) = volume.eval(x_coors[j], 0, z).toVectorXd();
}
curves[i].interpolate(points);
curves[i].saveNURBS("../out/nurbs/" + modelname + "_curve_" + to_string(i));
curves[i].draw(Window::viewer, false, true, 0.001);
}
//Skinning* method = new PiaMethod(curves, 1000);
//Skinning* method = new NasriMethod(curves);
Skinning* method = new PiaMinJaeMethod(curves, 1000);
//Skinning* method = new PiaNasriMethod(curves, 1000);
//Skinning* method = new MinJaeMethod(curves, 40, 20);
method->setViewer(&Window::viewer);
method->calculate();
Mesh3d* mesh = &(method->tspline);
cout << "num of nodes: " << mesh->get_num() << endl;
//mesh->saveMesh("../out/tspline/" + modelname + "_skinning");
MeshRender render(mesh, false, false, true, 0.001);
render.launch();
}
void Test::test_venus_skinning_helper_points()
{
//Window::viewer.data().line_width = 4.0f;
/*BsplineVolume volume;
volume.readVolume("../out/volume/venus_bspline.txt");*/
NURBSSurface surface;
//surface.loadNURBS("../out/nurbs/venus_front.cpt");
load_nurbs_surface(surface, "../out/nurbs/venus_face.cpt");
surface.saveAsObj("../out/OBJ/venus_face", 0.01);
//surface.draw(Window::viewer, false, true, 0.01);
////surface.saveNURBS("../out/nurbs/venus_front");
//Window w;
//w.launch();
const double resolution = 0.1;
const int curves_num = 1.0 / resolution + 1;
vector<NURBSCurve> curves(curves_num);
uniform_int_distribution<unsigned> u(15, 30);
default_random_engine e;
default_random_engine e1;
uniform_real_distribution<double> u1(0, 1);
for (int i = 0; i < curves_num; i++) {
int sampleNum = u(e);
cout << i << " sample " << sampleNum << " points" << endl;
Eigen::MatrixXd points(sampleNum + 2, 3);
double z = i*resolution;
vector<double> x_coors;
x_coors.push_back(0);
x_coors.push_back(1);
for (int j = 0; j < sampleNum; j++) {
double x = 1.0*(j+1) / (sampleNum+1);
//double x = u1(e1);
//cout << "x: " << x << endl;
x_coors.push_back(x);
}
sort(x_coors.begin(), x_coors.end());
for (int j = 0; j < x_coors.size(); j++) {
points.row(j) = surface.eval(x_coors[j], z);
}
//Window::viewer.data().add_points(points, blue);
curves[i].interpolate(points);
curves[i].saveNURBS("../out/nurbs/venus_curve_1_" + to_string(i));
curves[i].draw(Window::viewer, false, true,0.001);
}
/*NURBSSurface skin;
skin.skinning(curves, Window::viewer);
skin.draw(Window::viewer, false, true);
skin.saveAsObj("../out/OBJ/venus_nurbs_skin");
Window w;
w.launch();*/
//NURBSSurface surface1;
//surface1.skinning(curves, Window::viewer);
////surface1.saveAsObj("../out/OBJ/venus_Nurbs", 0.01);
//surface1.draw(Window::viewer, false);
//Window w;
//w.launch();
//Skinning* method = new PiaMethod(curves, 100);
//Skinning* method = new NasriMethod(curves);
//PiaMinJaeMethod* method = new PiaMinJaeMethod(curves, 20);
PiaNasriMethod* method = new PiaNasriMethod(curves, 40);
//Skinning* method = new MinJaeMethod(curves, 20, 50);
method->setViewer(&Window::viewer);
MatrixXd helper_points;
loadpoints("../out/points/helper_points.dat", helper_points);
//method->set_helper_points(helper_points);
method->calculate();
Mesh3d* mesh = &(method->tspline);
cout << "num of nodes: " << mesh->get_num() << endl;
//mesh->saveMesh("../out/tspline/venus_skinning1");
mesh->saveAsObj("../out/OBJ/venus_PiaNasri", 0.01);
MeshRender render(mesh,false,true,true,0.01);
render.launch();
}
void Test::test_Bsurface_skinning()
{
NURBSSurface surface;
//surface.loadNURBS("../out/nurbs/Bsurface_smooth.cpt");
load_nurbs_surface(surface, "../out/nurbs/Bsurface_smooth.cpt");
//surface.draw(Window::viewer, false, true);
const double resolution = 0.05;
const int curves_num = 1.0 / resolution + 1;
vector<NURBSCurve> curves(curves_num);
uniform_int_distribution<unsigned> u(15, 30);
default_random_engine e;
default_random_engine e1;
uniform_real_distribution<double> u1(0, 1);
for (int i = 0; i < curves_num; i++) {
int sampleNum = u(e);
cout << i << " sample " << sampleNum << " points" << endl;
Eigen::MatrixXd points(sampleNum + 2, 3);
double z = i*resolution;
vector<double> x_coors;
x_coors.push_back(0);
x_coors.push_back(1);
for (int j = 0; j < sampleNum; j++) {
double x = 1.0*(j + 1) / (sampleNum + 1);
//double x = u1(e1);
//cout << "x: " << x << endl;
x_coors.push_back(x);
}
sort(x_coors.begin(), x_coors.end());
for (int j = 0; j < x_coors.size(); j++) {
//points.row(j) = surface.eval(x_coors[j], z);
points.row(j) = surface.eval(z, x_coors[j]);
}
//Window::viewer.data().add_points(points, blue);
curves[i].interpolate(points);
curves[i].saveNURBS("../out/nurbs/Bsurface_curve_" + to_string(i));
curves[i].draw(Window::viewer, false, true, 0.001);
}
/*Window w;
w.launch();*/
//Skinning* method = new PiaMethod(curves, 100);
//Skinning* method = new NasriMethod(curves);
Skinning* method = new PiaMinJaeMethod(curves, 20);
//PiaNasriMethod* method = new PiaNasriMethod(curves, 100);
//Skinning* method = new MinJaeMethod(curves, 40, 10);
method->setViewer(&Window::viewer);
method->calculate();
Mesh3d* mesh = &(method->tspline);
cout << "num of nodes: " << mesh->get_num() << endl;
mesh->saveMesh("../out/tspline/Bsurface_skinning1");
mesh->saveAsObj("../out/OBJ/Bsurface_PiaMinJae", 0.01);
MeshRender render(mesh, false, false, true, 0.01);
render.launch();
}
void Test::test_sample_fitbsplinesolid(string modelname, double simplifyEps)
{
//string modelname = "tooth";
string filename = "../out/volume/" + modelname + "_bspline.txt";
BsplineVolume volume;
volume.readVolume(filename);
int sample_num = 5;
vector<NURBSSurface> nurbs(sample_num + 1);
MatrixXd controlpoints; // 用于显示时设置相机位置和缩放大小
// 采样生成B样条曲面
for (int i = 0; i <= sample_num; i++) {
double param = 1.0*i / sample_num;
// moai --> 'v'
volume.get_isoparam_surface(nurbs[i], param, 'u');
//nurbs[i].draw(Window::viewer, false, true);
//
for (int j = 0; j < nurbs[i].controlPw.size(); j++) {
int lastid = controlpoints.rows();
controlpoints.conservativeResize(controlpoints.rows() + nurbs[i].controlPw[j].rows(), 3);
for (int k = 0; k < nurbs[i].controlPw[j].rows(); k++) {
controlpoints.row(lastid + k) = nurbs[i].controlPw[j].row(k);
}
}
}
vector<Mesh3d> tsplines(sample_num + 1);
for (int i = 0; i <= sample_num; i++) {
// venus_bspline.txt ---> 3e-3
// tooth_bspline.txt ---> 3
// isis_bspline.txt --> 5e-3, 1e-2
//string filename_b = "../out/OBJ/" + modelname + "_nurbs_" + to_string(i);
//nurbs[i].saveAsObj(filename_b);
TsplineSimplify(nurbs[i], tsplines[i], 20, simplifyEps);
cout << "number of nodes: " << tsplines[i].get_num() << endl;
/*string filename = "../out/tspline/" + modelname + "_" + to_string(i) + ".cfg";
tsplines[i].saveMesh(filename);*/
tsplines[i].setViewer(&Window::viewer);
tsplines[i].draw(false, false, true, 0.01);
Window::viewer.data_list[tsplines[i].id].set_colors(blue);
}
/*for (auto& surface : nurbs) {
surface.draw(Window::viewer, false, true);
}*/
for (auto& data : Window::viewer.data_list) {
data.set_face_based(true);
data.show_lines = false;
data.invert_normals = true;
}
cout << "controlpoints: " << controlpoints.rows() << endl;
Window::viewer.core.align_camera_center(controlpoints);
int x_points = 21;
int y_points = 21;
int z_points = 11;
VectorXd knots(sample_num + 7);
knots(0) = 0; knots(1) = 0, knots(2) = 0;
knots(knots.size() - 1) = 1; knots(knots.size() - 2) = 1, knots(knots.size() - 3) = 1;
for (int i = 0; i <= sample_num; i++) {
knots(i + 3) = 1.0 * i / sample_num;
}
cout << "knots for interpolate: \n" << knots << endl;
vector<vector<NURBSCurve>> sample_curves(x_points, vector<NURBSCurve>(y_points));
vector<FitPoint3D> fit_points;
for (int i = 0; i <= x_points - 1; i++) {
for (int j = 0; j <= y_points - 1; j++) {
double u = 1.0*i / (x_points - 1);
double v = 1.0*j / (y_points - 1);
MatrixXd points(sample_num + 1, 3);
for (int k = 0; k <= sample_num; k++) {
points.row(k) = tsplines[k].eval(u, v).toVectorXd();
/*FitPoint3D fit_point;
fit_point.origin.fromVectorXd(points.row(k).transpose());
fit_point.param[0] = u;
fit_point.param[1] = v;
fit_point.param[2] = 1.0 * k / sample_num;
fit_points.push_back(fit_point);*/
}
sample_curves[i][j].interpolate(points, knots);
cout << "finished " << i << ", " << j << endl;
}
}
const int u_sample_num = 20;
const int v_sample_num = 20;
for (int i = 0; i <= sample_num; i++) {
for (int j = 0; j <= u_sample_num; j++) {
for (int k = 0; k <= v_sample_num; k++) {
FitPoint3D fit_point;
double u = 1.0 * j / u_sample_num;
double v = 1.0 * k / v_sample_num;
fit_point.param[0] = u;
fit_point.param[1] = v;
fit_point.param[2] = 1.0 * i / sample_num;
fit_point.origin = tsplines[i].eval(u, v);
fit_points.push_back(fit_point);
}
}
}
BsplineVolume bvolume;
bvolume.control_grid = vector<vector<vector<Point3d>>>(x_points, vector<vector<Point3d>>(y_points, vector<Point3d>(z_points)));
bvolume.constructKnotVector(x_points, y_points, z_points);
for (int i = 0; i < x_points; i++) {
for (int j = 0; j < y_points; j++) {
for (int k = 0; k < z_points; k++) {
//bvolume.control_grid[i][j][k].fromVectorXd(sample_curves[i][j].controlPw.row(k).transpose());
double w = 1.0 * k / (z_points - 1);
bvolume.control_grid[i][j][k].fromVectorXd(sample_curves[i][j].eval(w));
}
}
}
// using lspia
//bvolume.lspia(fit_points, x_points, y_points, z_points, 2, 1e-12);
double alpha = 0.495;
double delta = 0.495;
begin = clock();
for (int i = 0; i < 10; i++) {
double error = bvolume.GetSoildFiterror(fit_points, x_points, y_points, z_points, alpha, delta);
cout << "iter: " << i << ", error: " << error << endl;
bvolume.fitBsplineSolid(fit_points, x_points, y_points, z_points, alpha, delta);
}
// moai --> true
bvolume.setReverse(true);
bvolume.saveVolume("../out/volume/" + modelname + "_fitbspline");
bvolume.saveAsHex("../out/volume/" + modelname + "_fitbspline", 0.01);
VolumeRender render(&bvolume, false, false, true, 0.01);
render.launch();
end = clock();
cout << "time passed: " << (end - begin) / CLOCKS_PER_SEC << "s" << endl;
}
void Test::test_fitbsplinesolid(string modelname, double simplifyEps)
{
//string modelname = "tooth";
string prefix = "../out/nurbs/";
// Ssolid --> 6
// others --> 5
int sample_num = 6;
vector<NURBSSurface> nurbs(sample_num + 1);
MatrixXd controlpoints; // 用于显示时设置相机位置和缩放大小
// 采样生成B样条曲面
for (int i = 0; i <= sample_num; i++) {
load_nurbs_surface(nurbs[i], prefix + modelname + "_" + to_string(i) + ".cpt");
for (int j = 0; j < nurbs[i].controlPw.size(); j++) {
int lastid = controlpoints.rows();
controlpoints.conservativeResize(controlpoints.rows() + nurbs[i].controlPw[j].rows(), 3);
for (int k = 0; k < nurbs[i].controlPw[j].rows(); k++) {
controlpoints.row(lastid + k) = nurbs[i].controlPw[j].row(k);
}
}
}
/*for (int i = 0; i <= sample_num; i++) {
nurbs[i].draw(Window::viewer, false, true, 0.01);
Window::viewer.data().add_label(nurbs[i].controlPw[i].row(0).transpose(), to_string(i));
}*/
vector<Mesh3d> tsplines(sample_num + 1);
for (int i = 0; i <= sample_num; i++) {
// venus_bspline.txt ---> 3e-3
// tooth_bspline.txt ---> 3
// isis_bspline.txt --> 5e-3, 1e-2
//string filename_b = "../out/OBJ/" + modelname + "_nurbs_" + to_string(i);
//nurbs[i].saveAsObj(filename_b);
TsplineSimplify(nurbs[i], tsplines[i], 20, simplifyEps);
cout << "number of nodes: " << tsplines[i].get_num() << endl;
/*string filename = "../out/tspline/" + modelname + "_" + to_string(i) + ".cfg";
tsplines[i].saveMesh(filename);*/
tsplines[i].setViewer(&Window::viewer);
tsplines[i].draw(false, false, true, 0.01);
Window::viewer.data_list[tsplines[i].id].set_colors(blue);
}
///*for (auto& surface : nurbs) {
//surface.draw(Window::viewer, false, true);
//}*/
for (auto& data : Window::viewer.data_list) {
data.set_face_based(true);
data.show_lines = false;
data.invert_normals = true;
}
cout << "controlpoints: " << controlpoints.rows() << endl;
Window::viewer.core.align_camera_center(controlpoints);
int x_points = 21;
int y_points = 21;
int z_points = sample_num + 3;
VectorXd knots(sample_num + 7);
knots(0) = 0; knots(1) = 0, knots(2) = 0;
knots(knots.size() - 1) = 1; knots(knots.size() - 2) = 1, knots(knots.size() - 3) = 1;
for (int i = 0; i <= sample_num; i++) {
knots(i + 3) = 1.0 * i / sample_num;
}
cout << "knots for interpolate: \n" << knots << endl;
vector<vector<NURBSCurve>> sample_curves(x_points, vector<NURBSCurve>(y_points));
vector<FitPoint3D> fit_points;
for (int i = 0; i <= x_points - 1; i++) {
for (int j = 0; j <= y_points - 1; j++) {
double u = 1.0*i / (x_points - 1);
double v = 1.0*j / (y_points - 1);
MatrixXd points(sample_num + 1, 3);
for (int k = 0; k <= sample_num; k++) {
points.row(k) = tsplines[k].eval(u, v).toVectorXd();
/*FitPoint3D fit_point;
fit_point.origin.fromVectorXd(points.row(k).transpose());
fit_point.param[0] = u;
fit_point.param[1] = v;
fit_point.param[2] = 1.0 * k / sample_num;
fit_points.push_back(fit_point);*/
}
sample_curves[i][j].interpolate(points, knots);
sample_curves[i][j].draw(Window::viewer, false, true, 0.01);
cout << "finished " << i << ", " << j << endl;
}
}
const int u_sample_num = 20;
const int v_sample_num = 20;
for (int i = 0; i <= sample_num; i++) {
for (int j = 0; j <= u_sample_num; j++) {
for (int k = 0; k <= v_sample_num; k++) {
FitPoint3D fit_point;
double u = 1.0 * j / u_sample_num;
double v = 1.0 * k / v_sample_num;
fit_point.param[0] = u;
fit_point.param[1] = v;
fit_point.param[2] = 1.0 * i / sample_num;
fit_point.origin = tsplines[i].eval(u, v);
fit_points.push_back(fit_point);
}
}
}
BsplineVolume bvolume;
bvolume.control_grid = vector<vector<vector<Point3d>>>(x_points, vector<vector<Point3d>>(y_points, vector<Point3d>(z_points)));
bvolume.constructKnotVector(x_points, y_points, z_points);
for (int i = 0; i < x_points; i++) {
for (int j = 0; j < y_points; j++) {
for (int k = 0; k < z_points; k++) {
bvolume.control_grid[i][j][k].fromVectorXd(sample_curves[i][j].controlPw.row(k).transpose());
/*double w = 1.0 * k / (z_points - 1);
bvolume.control_grid[i][j][k].fromVectorXd(sample_curves[i][j].eval(w));*/
}
}
}
// using lspia
bvolume.lspia(fit_points, x_points, y_points, z_points, 10, 1e-12);
/*double alpha = 0.495;
double delta = 0.495;
begin = clock();
for (int i = 0; i < 20; i++) {
double error = bvolume.GetSoildFiterror(fit_points, x_points, y_points, z_points, alpha, delta);
cout << "iter: " << i << ", error: " << error << endl;
bvolume.fitBsplineSolid(fit_points, x_points, y_points, z_points, alpha, delta);
}*/
bvolume.setReverse(true);
bvolume.saveVolume("../out/volume/" + modelname + "_fitbspline");
bvolume.saveAsHex("../out/volume/" + modelname + "_fitbspline", 0.01);
VolumeRender render(&bvolume, false, false, true, 0.01);
render.launch();
end = clock();
cout << "time passed: " << (end - begin) / CLOCKS_PER_SEC << "s" << endl;
/*Window w;
w.launch();*/
}
void Test::test_nurbscurve_interpolate_optimize()
{
const double PI = 3.1415926;
default_random_engine e;
uniform_real_distribution<double> u(-16 * PI, PI);
vector<double> t;
int sampleNum = 50;
for (int i = 0; i <= sampleNum; i++) {
t.push_back(1.0 * i / sampleNum * 17 * PI - 16 * PI);
//t.push_back(u(e));
}
sort(t.begin(), t.end());
MatrixXd points = MatrixXd::Zero(sampleNum + 1, 3);
MatrixXd tangent = MatrixXd::Zero(sampleNum + 1, 3);
for (int i = 0; i <= sampleNum; i++) {
points(i, 0) = t[i];
points(i, 1) = 5 * sin(t[i]);
tangent(i, 0) = 1.0;
tangent(i, 1) = 5 * cos(t[i]);
tangent.row(i).normalize();
}
Window::viewer.data().add_points(points, green);
Window::viewer.data().add_edges(points, points + tangent, blue);
Window::viewer.core.align_camera_center(points);
NURBSCurve curve;
curve.interpolate_optimize(points, tangent);
//curve.interpolate(points);
curve.draw(Window::viewer, true, true, 0.001);
Window w;
w.launch();
}
/*
测试T样曲面求法向量的正确性
*/
void Test::test_tspline_normal()
{
Mesh3d mesh;
mesh.loadMesh("../out/tspline/venus_0.cfg.cfg");
for (int i = 0; i <= 10; i++) {
for (int j = 0; j <= 10; j++) {
double u = 1.0*i / 10;
double v = 1.0*j / 10;
MatrixXd point = MatrixXd::Zero(1, 3);
point.row(0) = mesh.eval(u, v).toVectorXd();
VectorXd normal = mesh.normal(u, v).toVectorXd() * 0.01;
MatrixXd endpoint(1, 3);
endpoint.row(0) = point.row(0) + normal.transpose();
Window::viewer.data().add_points(point, blue);
Window::viewer.data().add_edges(point, endpoint, red);
}
}
MeshRender render(&mesh, false, true);
render.launch();
}
/************************
从体上获取等参面
*************************/
void Test::test_getsurface_fromvolume()
{
string modelname = "duck_new";
string filename = "../out/volume/" + modelname + "_bspline.txt";
//string filename = "../out/volume/" + modelname + ".vol";
BsplineVolume volume;
volume.readVolume(filename);
int sample_num = 5;
vector<NURBSSurface> nurbs(sample_num + 1);
vector<NURBSSurface> pia_nurbs(sample_num + 1);
MatrixXd controlpoints; // 用于显示时设置相机位置和缩放大小
// 采样生成B样条曲面
for (int i = 0; i <= sample_num; i++) {
double param = 1.0*i / sample_num;
// moai --> 'u'
// moai_new --> 'u'
// moai_fitbspline --> 'w'
// duck --> 'v'
// duck_new --> 'w'
volume.get_isoparam_surface(nurbs[i], param, 'w');
string filename = "../out/nurbs/" + modelname + "_" + to_string(i);
save_nurbs_surface(nurbs[i], filename);
//NurbsPia nurbsPia(nurbs[i], 20, 1e-5, 10);
/*pia_nurbs[i] = nurbsPia.calculate();
if (i == 1) {
pia_nurbs[i].draw(Window::viewer, false, true);
}*/
}
Window w;
w.launch();
}
void Test::load_nurbs_surface(NURBSSurface & surface, string filename)
{
// 加载另外一种文件格式的nurbs surface
ifstream in(filename);
if (!in.is_open()) {
cout << "error: can't open file: " << filename << endl;
return;
}
surface.isRational = false;
surface.u_order = 4;
surface.v_order = 4;
surface.dimension = 3;
string line;
getline(in, line);
getline(in, line);
stringstream ss0(line);
ss0 >> surface.v_num >> surface.u_num;
--surface.v_num;
--surface.u_num;
getline(in, line);
surface.controlPw.resize(surface.v_num + 1);
for (int i = 0; i <= surface.v_num; i++) {
surface.controlPw[i] = MatrixXd::Zero(surface.u_num + 1, 3);
for (int j = 0; j <= surface.u_num; j++) {
getline(in, line);
istringstream ss(line);
ss >> surface.controlPw[i](j, 0) >> surface.controlPw[i](j, 1) >> surface.controlPw[i](j, 2);
//cout << surface.controlPw[i](j, 0) << ", " << surface.controlPw[i](j, 1) << ", " << surface.controlPw[i](j, 2) << endl;
}
}
//cout << "***********************************************" << endl;
getline(in, line);
getline(in, line);
istringstream ss1(line);
surface.vknots = VectorXd::Zero(surface.v_num + 5);
for (int i = 0; i < surface.vknots.size(); i++) {
ss1 >> surface.vknots(i);
}
//cout << "vkonts: \n" << surface.vknots << endl;
getline(in, line);
getline(in, line);
istringstream ss2(line);
surface.uknots = VectorXd::Zero(surface.u_num + 5);
for (int i = 0; i < surface.uknots.size(); i++) {
ss2 >> surface.uknots(i);
}
//cout << "ukonts: \n" << surface.uknots << endl;
in.close();
}
void Test::save_nurbs_surface(const NURBSSurface & surface, string filename)
{
// 保存nurbs surface为另外一种文件格式
filename += ".cpt";
ofstream out(filename);
if (!out.is_open()) {
cout << "error: can't open file: " << filename << endl;
return;
}
out << "#resolution of the control grid" << endl;
out << surface.v_num + 1 << " " << surface.u_num + 1 << endl;
out << "#control points" << endl;
for (int i = 0; i <= surface.v_num; i++) {
for (int j = 0; j <= surface.u_num; j++) {
out << surface.controlPw[i](j, 0) << " "
<< surface.controlPw[i](j, 1) << " "
<< surface.controlPw[i](j, 2) << endl;
}
}
out << "knot vector in u-direction" << endl;
for (int i = 0; i < surface.vknots.size(); i++) {
out << surface.vknots(i) << " ";
}
out << endl;
out << "knot vector in v-direction" << endl;
for (int i = 0; i < surface.uknots.size(); i++) {
out << surface.uknots(i) << " ";
}
out << endl;
out.close();
}
void Test::test_load_nurbs_surface()
{
string filename = "../out/nurbs/Bsurface.cpt";
NURBSSurface surface;
load_nurbs_surface(surface, filename);
surface.draw(Window::viewer, false, true);
surface.saveNURBS("../out/nurbs/Bsurface_standard");
Window w;
w.launch();
}
void Test::test_save_nurbs_surface()
{
string filename = "../out/nurbs/Bsurface_standard.cpt";
NURBSSurface surface;
surface.loadNURBS(filename);
surface.draw(Window::viewer, false, true);
save_nurbs_surface(surface, "../out/nurbs/Bsurface1");
Window w;
w.launch();
}
void Test::test_save_quadObj()
{
Mesh3d mesh;
mesh.loadMesh("../out/tspline/moai_new_5.cfg");
mesh.saveAsQuadObj("../out/OBJ/moai_new_5_quad");
}
/**
棋子蒙皮
*/
void Test::test_chess_skinning()
{
vector<MatrixXd> curve_points(13);
// 读取文件，得到散点
for (int i = 0; i < curve_points.size(); i++) {
string filename = "../out/curves/selected_point" + to_string(i + 1) + ".txt";
ifstream in(filename);
if (!in.is_open()) {
cout << "error : can't open file: " << filename << endl;
return;
}
string line;
char c; // 读取'v'
while (getline(in, line)) {
curve_points[i].conservativeResize(curve_points[i].rows() + 1, 3);
int lastid = curve_points[i].rows() - 1;
stringstream ss(line);
ss >> c >> curve_points[i](lastid, 0) >> curve_points[i](lastid, 1) >> curve_points[i](lastid, 2);
}
in.close();
}
// 插值得到B样条曲线
vector<NURBSCurve> nurbs_curves(curve_points.size());
for (int i = 0; i < curve_points.size(); i++) {
nurbs_curves[i].interpolate(curve_points[i]);
nurbs_curves[i].draw(Window::viewer, false, true);
Window::viewer.data().add_points(curve_points[i], green);
}
Skinning* method = new PiaMinJaeMethod(nurbs_curves, 20);
method->setViewer(&Window::viewer);
method->calculate();
MeshRender render(&method->tspline, false, true, true);
render.launch();
}
void Test::test_ring_skinning()
{
Window::viewer.data().point_size = 8.0f;
Window::viewer.data().line_width = 4.0f;
const int curve_nums = 9;
string prefix = "../out/curves/";
vector<MatrixXd> points(curve_nums);
MatrixXd allpoints; // 用于显示时设置相机位置和缩放大小
for (int i = 0; i < curve_nums; i++) {
string filename = prefix + "ring" + to_string(i + 1) + ".txt";
loadpoints(filename, points[i]);
int lastid = allpoints.rows();
allpoints.conservativeResize(lastid + points[i].rows(), 3);
for (int j = lastid; j < allpoints.rows(); j++) {
allpoints.row(j) = points[i].row(j - lastid);
}
//Window::viewer.data().add_points(points[i], red);
}
vector<VectorXd> knot_vectors(curve_nums);
knot_vectors[0] = VectorXd::Zero(11);
knot_vectors[0] << 0, 0, 0, 0, 0.25, 0.5, 0.75, 1, 1, 1, 1;
knot_vectors[1] = VectorXd::Zero(10);
knot_vectors[1] << 0, 0, 0, 0, 0.375, 0.625, 1, 1, 1, 1;
knot_vectors[2] = VectorXd::Zero(11);
knot_vectors[2] << 0, 0, 0, 0, 0.26, 0.51, 0.76, 1, 1, 1, 1;
knot_vectors[3] = VectorXd::Zero(10);
knot_vectors[3] << 0, 0, 0, 0, 0.385, 0.635, 1, 1, 1, 1;
knot_vectors[4] = VectorXd::Zero(11);
knot_vectors[4] << 0, 0, 0, 0, 0.24, 0.49, 0.74, 1, 1, 1, 1;
knot_vectors[5] = VectorXd::Zero(10);
knot_vectors[5] << 0, 0, 0, 0, 0.355, 0.605, 1, 1, 1, 1;
knot_vectors[6] = VectorXd::Zero(11);
knot_vectors[6] << 0, 0, 0, 0, 0.22, 0.48, 0.73, 1, 1, 1, 1;
knot_vectors[7] = VectorXd::Zero(10);
knot_vectors[7] << 0, 0, 0, 0, 0.335, 0.585, 1, 1, 1, 1;
knot_vectors[8] = VectorXd::Zero(11);
knot_vectors[8] << 0, 0, 0, 0, 0.2, 0.45, 0.80, 1, 1, 1, 1;
/*VectorXd knot_vector1(11), knot_vector2(10);
knot_vector1 << 0, 0, 0, 0, 0.25, 0.5, 0.75, 1, 1, 1, 1;
knot_vector2 << 0, 0, 0, 0, 0.375, 0.625, 1, 1, 1, 1;*/
vector<NURBSCurve> curves(curve_nums);
VectorXd params = VectorXd::Zero(points[0].rows());
for (int i = 0; i < params.size(); i++) {
params(i) = 1.0 * i / (params.size() - 1);
}
// fit data points with appointed knot vector using lspia fit
for (int i = 0; i < curve_nums; i++) {
/*VectorXd knots = i % 2 ? knot_vector2 : knot_vector1;
int ncpts = i % 2 ? knot_vector2.size() - 4 : knot_vector1.size() - 4;*/
VectorXd knots = knot_vectors[i];
int ncpts = knots.size() - 4;
curves[i].lspiafit(points[i], params, ncpts, knots);
curves[i].draw(Window::viewer, false);
curves[i].saveNURBS("../out/nurbs/ring" + to_string(i));
}
Window::viewer.core.align_camera_center(allpoints);
/*NURBSSurface surface;
surface.skinning(curves, Window::viewer);
surface.draw(Window::viewer, false);
surface.saveAsObj("../out/OBJ/ring_nurbs");
Window w;
w.launch();*/
//Skinning* method = new MinJaeMethod(curves, 20, 50);
//Skinning* method = new NasriMethod(curves);
Skinning* method = new PiaMinJaeMethod(curves, 20);
//Skinning* method = new PiaNasriMethod(curves, 20);
method->setViewer(&Window::viewer);
method->calculate();
Mesh3d* mesh = &(method->tspline);
cout << "num of nodes: " << mesh->get_num() << endl;
//mesh->saveMesh("../out/tspline/ring");
//mesh->saveAsObj("../out/OBJ/ring_minjae");
/*MeshRender render(mesh);
render.launch();*/
Window w;
w.launch();
}
void Test::test_helicoidal_skinning()
{
Window::viewer.data().point_size = 5.0f;
//Window::viewer.data().line_width = 4.0f;
const int curve_nums = 11;
string prefix = "../out/curves/";
vector<MatrixXd> points(curve_nums);
MatrixXd allpoints; // 用于显示时设置相机位置和缩放大小
for (int i = 0; i < curve_nums; i++) {
string filename = prefix + "helicoidal" + to_string(i + 1) + ".txt";
loadpoints(filename, points[i]);
int lastid = allpoints.rows();
allpoints.conservativeResize(lastid + points[i].rows(), 3);
for (int j = lastid; j < allpoints.rows(); j++) {
allpoints.row(j) = points[i].row(j - lastid);
}
//Window::viewer.data().add_points(points[i], red);
}
vector<VectorXd> knot_vectors(curve_nums);
knot_vectors[0] = VectorXd::Zero(11);
knot_vectors[0] << 0, 0, 0, 0, 0.25, 0.5, 0.75, 1, 1, 1, 1;
knot_vectors[1] = VectorXd::Zero(10);
knot_vectors[1] << 0, 0, 0, 0, 0.375, 0.625, 1, 1, 1, 1;
knot_vectors[2] = VectorXd::Zero(11);
knot_vectors[2] << 0, 0, 0, 0, 0.26, 0.51, 0.76, 1, 1, 1, 1;
knot_vectors[3] = VectorXd::Zero(10);
knot_vectors[3] << 0, 0, 0, 0, 0.385, 0.635, 1, 1, 1, 1;
knot_vectors[4] = VectorXd::Zero(11);
knot_vectors[4] << 0, 0, 0, 0, 0.24, 0.49, 0.74, 1, 1, 1, 1;
knot_vectors[5] = VectorXd::Zero(10);
knot_vectors[5] << 0, 0, 0, 0, 0.355, 0.605, 1, 1, 1, 1;
knot_vectors[6] = VectorXd::Zero(11);
knot_vectors[6] << 0, 0, 0, 0, 0.22, 0.48, 0.73, 1, 1, 1, 1;
knot_vectors[7] = VectorXd::Zero(10);
knot_vectors[7] << 0, 0, 0, 0, 0.335, 0.585, 1, 1, 1, 1;
knot_vectors[8] = VectorXd::Zero(11);
knot_vectors[8] << 0, 0, 0, 0, 0.2, 0.45, 0.80, 1, 1, 1, 1;
knot_vectors[9] = VectorXd::Zero(10);
knot_vectors[9] << 0, 0, 0, 0, 0.4, 0.7, 1, 1, 1, 1;
knot_vectors[10] = VectorXd::Zero(11);
knot_vectors[10] << 0, 0, 0, 0, 0.3, 0.55, 0.85, 1, 1, 1, 1;
/*VectorXd knot_vector1(11), knot_vector2(10);
knot_vector1 << 0, 0, 0, 0, 0.25, 0.5, 0.75, 1, 1, 1, 1;
knot_vector2 << 0, 0, 0, 0, 0.375, 0.625, 1, 1, 1, 1;*/
vector<NURBSCurve> curves(curve_nums);
VectorXd params = VectorXd::Zero(points[0].rows());
for (int i = 0; i < params.size(); i++) {
params(i) = 1.0 * i / (params.size() - 1);
}
// fit data points with appointed knot vector using lspia fit
for (int i = 0; i < curve_nums; i++) {
/*VectorXd knots = i % 2 ? knot_vector2 : knot_vector1;
int ncpts = i % 2 ? knot_vector2.size() - 4 : knot_vector1.size() - 4;*/
VectorXd knots = knot_vectors[i];
int ncpts = knots.size() - 4;
curves[i].lspiafit(points[i], params, ncpts, knots);
curves[i].draw(Window::viewer, false);
curves[i].saveNURBS("../out/nurbs/helicoidal" + to_string(i));
}
Window::viewer.core.align_camera_center(allpoints);
/*NURBSSurface surface;
surface.skinning(curves, Window::viewer);
surface.draw(Window::viewer, false);
surface.saveAsObj("../out/OBJ/helicoidal_nurbs");
Window w;
w.launch();*/
Skinning* method = new MinJaeMethod(curves, 20, 50);
//Skinning* method = new NasriMethod(curves);
//Skinning* method = new PiaMinJaeMethod(curves, 20);
//Skinning* method = new PiaNasriMethod(curves, 20);
method->setViewer(&Window::viewer);
method->calculate();
Mesh3d* mesh = &(method->tspline);
cout << "num of nodes: " << mesh->get_num() << endl;
//mesh->saveMesh("../out/tspline/helicoidal");
mesh->saveAsObj("../out/OBJ/helicoidal_minjae");
MeshRender render(mesh);
render.launch();
}