Решатель выделен в отдельный класс

TODO: сделать всё-таки универсальный класс

Header.h

@@ -1,3 +1,3 @@
 #include <iostream>
 #include <fstream>
-#include <Eigen/Dense>
+#include "Solver.h"

MemMAPR-MKE.cpp

@@ -1,81 +1,10 @@
 #include "Header.h"
-
+#include "Solver.h"
-using namespace Eigen;
 
 int main() {
     std::ifstream file("matrix.txt");
-    int N = 3;
+    Solver slv(1., 0., 1., 3, 0, 1);
-    int upper = 1, lower = 0;
+    slv.Execute();
-    double A = 1, B = 0, C = 1, L = upper - lower;
-
-    double dx = L / N;
-
-    MatrixXd local = MatrixXd::Zero(2, 2);
-    local(0, 0) = A / dx - B / 2;
-    local(0, 1) = -A / dx + B / 2;
-    local(1, 0) = -A / dx - B / 2;
-    local(1, 1) = A / dx + B / 2;
-    std::cout << "Local matrix:\n"  << local << std::endl;
-
-    VectorXd local_load(2);
-    local_load(0) = C * dx / 2; 
-    local_load(1) = C * dx / 2;
-
-    // Ансамблированные матрица и вектор
-    MatrixXd ansamb = MatrixXd::Zero(N + 1, N + 1);
-    VectorXd global_load = VectorXd::Zero(N + 1);
-
-    // Ансамблирование для каждого конечного элемента
-    for (int elem = 0; elem < N; ++elem) {
-        int node_i = elem;
-        int node_j = elem + 1;
-
-        // Матрица жесткости
-        ansamb(node_i, node_i) += local(0, 0);
-        ansamb(node_i, node_j) += local(0, 1);
-        ansamb(node_j, node_i) += local(1, 0);
-        ansamb(node_j, node_j) += local(1, 1);
-
-        // Вектор нагрузки
-        global_load(node_i) += local_load(0);
-        global_load(node_j) += local_load(1);
-    }
-
-    std::cout << "Before:" << std::endl;
-    std::cout << "Ansamb matrix:\n" << ansamb << std::endl;
-    std::cout << "Ansamb load vector:\n" << global_load << std::endl;
-
-    // ГУ 1-го рода
-    double u_left = 5.0;   // u(1) = 5
-    double u_right = 15.0; // u(6) = 15
-
-    // 1. Учёт условия u(1)=5
-    for (int i = 1; i < N + 1; ++i) {
-        global_load(i) -= ansamb(i, 0) * u_left;
-    }
-    // Обнуляем первую строку и столбец матрицы, устанавливаем диагональ = 1
-    ansamb.row(0).setZero();
-    ansamb.col(0).setZero();
-    ansamb(0, 0) = 1.0;
-    global_load(0) = u_left;
-
-    // 2. Учёт условия u(6)=15
-    for (int i = 0; i < N; ++i) {
-        global_load(i) -= ansamb(i, N) * u_right;
-    }
-    // Обнуляем последнюю строку и столбец матрицы, устанавливаем диагональ = 1
-    ansamb.row(N).setZero();
-    ansamb.col(N).setZero();
-    ansamb(N, N) = 1.0;
-    global_load(N) = u_right;
-
-    std::cout << "\nAfter:" << std::endl;
-    std::cout << "Modified matrix:\n" << ansamb << std::endl;
-    std::cout << "Modified load vector:\n" << global_load << std::endl;
-
-    VectorXd solution = ansamb.fullPivLu().solve(global_load);
-    std::cout << "\nSolution:" << std::endl;
-    std::cout << solution << std::endl;
 
     return 0;
 }

MemMAPR-MKE.vcxproj

@@ -124,12 +124,14 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="MemMAPR-MKE.cpp" />
+    <ClCompile Include="Solver.cpp" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Header.h" />
+    <ClInclude Include="Solver.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

MemMAPR-MKE.vcxproj.filters

@@ -13,11 +13,17 @@
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
       <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
     </Filter>
+    <Filter Include="Solver">
+      <UniqueIdentifier>{3be6c970-16cc-463a-a3d5-22a26a8bff54}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="MemMAPR-MKE.cpp">
       <Filter>Исходные файлы</Filter>
     </ClCompile>
+    <ClCompile Include="Solver.cpp">
+      <Filter>Solver</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
@@ -26,5 +32,8 @@
     <ClInclude Include="Header.h">
       <Filter>Исходные файлы</Filter>
     </ClInclude>
+    <ClInclude Include="Solver.h">
+      <Filter>Solver</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

Solver.cpp

@@ -0,0 +1,79 @@
+#include "Header.h"
+#include <Eigen/Dense>
+using namespace Eigen;
+
+Solver::Solver(double _A, double _B, double _C, int _N, int _l, int _u) {
+    A = _A, B = _B, C = _C, N = _N;
+    upper = _u, lower = _l;
+	L = upper - lower;
+	dx = L / N;
+}
+
+void Solver::Execute() {
+    MatrixXd local = MatrixXd::Zero(2, 2);
+    local(0, 0) = A / dx - B / 2;
+    local(0, 1) = -A / dx + B / 2;
+    local(1, 0) = -A / dx - B / 2;
+    local(1, 1) = A / dx + B / 2;
+    std::cout << "Local matrix:\n" << local << std::endl;
+
+    VectorXd local_load(2);
+    local_load(0) = C * dx / 2;
+    local_load(1) = C * dx / 2;
+
+    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+    MatrixXd ansamb = MatrixXd::Zero(N + 1, N + 1);
+    VectorXd global_load = VectorXd::Zero(N + 1);
+
+    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+    for (int elem = 0; elem < N; ++elem) {
+        int node_i = elem;
+        int node_j = elem + 1;
+
+        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+        ansamb(node_i, node_i) += local(0, 0);
+        ansamb(node_i, node_j) += local(0, 1);
+        ansamb(node_j, node_i) += local(1, 0);
+        ansamb(node_j, node_j) += local(1, 1);
+
+        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+        global_load(node_i) += local_load(0);
+        global_load(node_j) += local_load(1);
+    }
+
+    std::cout << "Before:" << std::endl;
+    std::cout << "Ansamb matrix:\n" << ansamb << std::endl;
+    std::cout << "Ansamb load vector:\n" << global_load << std::endl;
+
+    // <20><> 1-<2D><> <20><><EFBFBD><EFBFBD>
+    double u_left = 5.0;   // u(1) = 5
+    double u_right = 15.0; // u(6) = 15
+
+    // 1. <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> u(1)=5
+    for (int i = 1; i < N + 1; ++i) {
+        global_load(i) -= ansamb(i, 0) * u_left;
+    }
+    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> = 1
+    ansamb.row(0).setZero();
+    ansamb.col(0).setZero();
+    ansamb(0, 0) = 1.0;
+    global_load(0) = u_left;
+
+    // 2. <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> u(6)=15
+    for (int i = 0; i < N; ++i) {
+        global_load(i) -= ansamb(i, N) * u_right;
+    }
+    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> = 1
+    ansamb.row(N).setZero();
+    ansamb.col(N).setZero();
+    ansamb(N, N) = 1.0;
+    global_load(N) = u_right;
+
+    std::cout << "\nAfter:" << std::endl;
+    std::cout << "Modified matrix:\n" << ansamb << std::endl;
+    std::cout << "Modified load vector:\n" << global_load << std::endl;
+
+    VectorXd solution = ansamb.fullPivLu().solve(global_load);
+    std::cout << "\nSolution:" << std::endl;
+    std::cout << solution << std::endl;
+}

Solver.h

@@ -0,0 +1,9 @@
+#pragma once
+class Solver {
+private:
+	double A, B, C, L, dx;
+	int N, upper, lower;
+public:
+	Solver(double _A, double _B, double _C, int _N, int _l, int _u);
+	void Execute();
+};