#pragma once

namespace TriangleApp {

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;

// Структура для хранения координат точки
public value struct TPoint {
    double x;
    double y;
};

// Структура для хранения информации о треугольнике
public value struct Treug {
    TPoint t1;
    TPoint t2;
    double a, b, c;
    double S;
};

public ref class MainForm : public System::Windows::Forms::Form
{
private:
    array<TPoint>^ points; // массив точек
    array<Treug>^ treugols; // массив треугольников
    int n; // количество треугольников
    int count; // счетчик вводимых точек

public:
    MainForm(void)
    {
        InitializeComponent();
        n = 0;
        count = 0;
        points = gcnew array<TPoint>(0);
        treugols = gcnew array<Treug>(0);
    }

protected:
    ~MainForm()
    {
        if (components)
        {
            delete components;
        }
    }

private: System::Windows::Forms::Label^ label1;
private: System::Windows::Forms::TextBox^ txtPoints;

private: System::Windows::Forms::Button^ btnPoints;
private: System::Windows::Forms::Label^ label2;
private: System::Windows::Forms::TextBox^ txtTreugols;

private: System::Windows::Forms::Button^ btnTreugols;
private: System::ComponentModel::Container^ components;


#pragma region Windows Form Designer generated code
    void InitializeComponent(void)
    {
        this->label1 = (gcnew System::Windows::Forms::Label());
        this->txtPoints = (gcnew System::Windows::Forms::TextBox());
        this->btnPoints = (gcnew System::Windows::Forms::Button());
        this->label2 = (gcnew System::Windows::Forms::Label());
        this->txtTreugols = (gcnew System::Windows::Forms::TextBox());
        this->btnTreugols = (gcnew System::Windows::Forms::Button());
        this->SuspendLayout();
        //
        // label1
        //
        this->label1->AutoSize = true;
        this->label1->Location = System::Drawing::Point(12, 20);
        this->label1->Name = L"label1";
        this->label1->Size = System::Drawing::Size(65, 13);
        this->label1->TabIndex = 0;
        this->label1->Text = L"Enter points";
        //
        // txtPoints
        //
        // btnPoints
        //
        this->btnPoints->Location = System::Drawing::Point(189, 15);
        this->btnPoints->Name = L"btnPoints";
        this->btnPoints->Size = System::Drawing::Size(75, 23);
        this->btnPoints->TabIndex = 2;
        this->btnPoints->Text = L"OK";
        this->btnPoints->UseVisualStyleBackColor = true;
        this->btnPoints->Click += gcnew System::EventHandler(this, &MainForm::btnPoints_Click);
        //
        // label2
        //
        this->label2->AutoSize = true;
        this->label2->Location = System::Drawing::Point(12, 59);
        this->label2->Name = L"label2";
        this->label2->Size = System::Drawing::Size(100, 13);
        this->label2->TabIndex = 3;
        this->label2->Text = L"Number of treugols:";
        //
        // txtTreugols
        //
        this->txtTreugols->Location = System::Drawing::Point(118, 56);
        this->txtTreugols->Name = L"txtTreugols";
        this->txtTreugols->Size = System::Drawing::Size(100, 20);
        this->txtTreugols->TabIndex = 4;
        //
        // btnTreugols
        //
        this->btnTreugols->Location = System::Drawing::Point(224, 54);
        this->btnTreugols->Name = L"btnTreugols";
        this->btnTreugols->Size = System::Drawing::Size(75, 23);
        this->btnTreugols->TabIndex = 5;
        this->btnTreugols->Text = L"OK";
        this->btnTreugols->UseVisualStyleBackColor = true;
        this->btnTreugols->Click += gcnew System::EventHandler(this, &MainForm::btnTreugols_Click);
        //
        // MainForm
        //
        this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
        this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
        this->ClientSize = System::Drawing::Size(316, 99);
        this->Controls->Add(this->btnTreugols);
        this->Controls->Add(this->txtTreugols);
        this->Controls->Add(this->label2);
        this->Controls->Add(this->btnPoints);
        this->Controls->Add(this->txtPoints);
        this->Controls->Add(this->label1);
        this->Name = L"MainForm";
        this->Text = L"TriangleApp";
        this->ResumeLayout(false);
        this->PerformLayout();
    }
#pragma endregion
private:
    System::Void btnPoints_Click(System::Object^ sender, System::EventArgs^ e) {
        try {
            // Считывание координат точки из текстового поля
            double x = Convert::ToDouble(txtPoints->Text->Split(',')[0]);
            double y = Convert::ToDouble(txtPoints->Text->Split(',')[1]);

            // Добавление точки в массив
            Array::Resize(points, count + 1);
            points[count].x = x;
            points[count].y = y;
            count++;

            // Очистка текстового поля
            txtPoints->Text = "";
        }
        catch (Exception^ ex) {
            MessageBox::Show(ex->Message);
        }
    }

    void MainForm::btnPoints_Click(System::Object^ sender, System::EventArgs^ e)
    {
        if (!Int32::TryParse(txtPoints->Text, n) || n <= 0) {
            MessageBox::Show("Incorrect data entered!");
            return;
        }
        Array::Resize(points, 2 * n);

        count = 0;
        for (int i = 0; i < 2 * n; i += 2) {
            count++;
            String^ msg = "Enter x and y for point " + ((count + 1) / 2) + ": ";
            double x, y;
            if (Double::TryParse(Microsoft::VisualBasic::Interaction::InputBox(msg), x) && Double::TryParse(Microsoft::VisualBasic::Interaction::InputBox(msg), y)) {
                points[i].x = x;
                points[i].y = y;
                points[i + 1].x = x;
                points[i + 1].y = y;
            }
            else {
                MessageBox::Show("Incorrect data entered!");
                count--;
                i -= 2;
            }
        }

        btnTreugols->Enabled = true;
    }

    // Функция для вычисления длины стороны треугольника
    double GetLength(TPoint a, TPoint b)
    {
        return Math::Sqrt(Math::Pow(a.x - b.x, 2) + Math::Pow(a.y - b.y, 2));
    }

    // Функция для вычисления площади треугольника
    double GetS(Treug t)
    {
        double p = (t.a + t.b + t.c) / 2;
        return Math::Sqrt(p * (p - t.a) * (p - t.b) * (p - t.c));
    }

    System::Void btnTreugols_Click(System::Object^ sender, System::EventArgs^ e) {
        try {
            // Парсим количество треугольников из текстового поля
            n = System::Convert::ToInt32(txtTreugols->Text);

            // Проверяем, что количество треугольников неотрицательное
            if (n <= 0) {
                throw gcnew System::ArgumentException("Number of treugols should be positive");
            }

            // Обновляем размер массива треугольников
            Array::Resize(treugols, n);

            // Обнуляем счетчик вводимых точек
            count = 0;

            // Очищаем текстовое поле для ввода точек
            txtPoints->Text = "";
        } catch (System::Exception^ ex) {
            // Если произошла ошибка, выводим сообщение об ошибке
            MessageBox::Show(ex->Message);
        }
    }

    double p = 0, s = 0;
    for (int i = 0; i < n; i++) {
        p += treugols[i].a;
    }

    double pp = p / 2;
    for (int i = 0; i < n; i++) {
        s += GetArea(treugols[i], pp);
    }

    MessageBox::Show("Perimeter: " + p + "\nArea: " + s);
}