#pragma once

namespace Guschin {

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

	float Vx;
	float Vy;
	float aspectFig;
	vector<path> figure;
	mat3 T;
	mat3 initT;

	/// <summary>
	/// Ñâîäêà äëÿ MyForm
	/// </summary>
	public ref class MyForm : public System::Windows::Forms::Form
	{
	public:
		MyForm(void)
		{
			InitializeComponent();
			//
			//TODO: äîáàâüòå êîä êîíñòðóêòîðà
			//
		}

	protected:
		/// <summary>
		/// Îñâîáîäèòü âñå èñïîëüçóåìûå ðåñóðñû.
		/// </summary>
		~MyForm()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::OpenFileDialog^ openFileDialog;
	private: System::Windows::Forms::Button^ btnOpen;
	protected:

	protected:

	private:
		/// <summary>
		/// Îáÿçàòåëüíàÿ ïåðåìåííàÿ êîíñòðóêòîðà.
		/// </summary>
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
		/// <summary>
		/// Òðåáóåìûé ìåòîä äëÿ ïîääåðæêè êîíñòðóêòîðà — íå èçìåíÿéòå 
		/// ñîäåðæèìîå ýòîãî ìåòîäà ñ ïîìîùüþ ðåäàêòîðà êîäà.
		/// </summary>
		void InitializeComponent(void)
		{
			this->openFileDialog = (gcnew System::Windows::Forms::OpenFileDialog());
			this->btnOpen = (gcnew System::Windows::Forms::Button());
			this->SuspendLayout();
			// 
			// openFileDialog
			// 
			this->openFileDialog->DefaultExt = L"txt";
			this->openFileDialog->Filter = L"Текстовые файлы (*.txt)|*.txt|Все файлы (*.*)|*.*";
			this->openFileDialog->Title = L"Открыть файл";
			// 
			// btnOpen
			// 
			this->btnOpen->Location = System::Drawing::Point(12, 12);
			this->btnOpen->Name = L"btnOpen";
			this->btnOpen->Size = System::Drawing::Size(113, 39);
			this->btnOpen->TabIndex = 0;
			this->btnOpen->Text = L"Открыть";
			this->btnOpen->UseVisualStyleBackColor = true;
			this->btnOpen->Click += gcnew System::EventHandler(this, &MyForm::btnOpen_Click);
			// 
			// MyForm
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(553, 557);
			this->Controls->Add(this->btnOpen);
			this->KeyPreview = true;
			this->Name = L"MyForm";
			this->Text = L"MyForm";
			this->Load += gcnew System::EventHandler(this, &MyForm::MyForm_Load);
			this->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &MyForm::MyForm_Paint);
			this->KeyDown += gcnew System::Windows::Forms::KeyEventHandler(this, &MyForm::MyForm_KeyDown);
			this->Resize += gcnew System::EventHandler(this, &MyForm::MyForm_Resize);
			this->ResumeLayout(false);

		}
#pragma endregion
	private: System::Void MyForm_Resize(System::Object^ sender, System::EventArgs^ e) {
		Refresh();
	}
	private: System::Void MyForm_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) {
		Graphics^ g = e->Graphics;
		g->Clear(Color::Aquamarine);

		for (int i = 0; i < figure.size(); ++i)
		{
			path lines = figure[i];
			Pen^ pen = gcnew Pen(Color::FromArgb(lines.color.x, lines.color.y, lines.color.z));
			pen->Width = lines.thickness;
			vec2 start = normalize(T * vec3(lines.vertices[0], 1.0));
			for (int j = 1; j < lines.vertices.size(); ++j)
			{
				vec2 end = normalize(T * vec3(lines.vertices[j], 1.0));
				g->DrawLine(pen, start.x, start.y, end.x, end.y);
				start = end;
			}
		}
	}
	private: System::Void MyForm_Load(System::Object^ sender, System::EventArgs^ e) { }
	private: System::Void MyForm_KeyDown(System::Object^ sender, System::Windows::Forms::KeyEventArgs^ e) {
		float Wcx = ClientRectangle.Width / 2.f;
		float Wcy = ClientRectangle.Height / 2.f;

		switch (e->KeyCode) {
		case Keys::Escape:
			T = initT;
			break;
		case Keys::Q :
			T = translate(-Wcx, -Wcy) * T;
			T = rotate(0.01f) * T;
			T = translate(Wcx, Wcy) * T;
			break;
		case Keys::E :
			T = translate(-Wcx, -Wcy) * T;
			T = rotate(-0.01f) * T;
			T = translate(Wcx, Wcy) * T;
			break;

		case Keys::W :
			T = translate(0.f, -1.f) * T;
			break;
		case Keys::S :
			T = translate(0.f, 1.f) * T;
			break;
		case Keys::A :
			T = translate(-1.f, 0.f) * T;
			break;
		case Keys::D :
			T = translate(1.f, 0.f) * T;
			break;

		case Keys::R:
			T = translate(-Wcx, -Wcy) * T;
			T = rotate(0.05f) * T;
			T = translate(Wcx, Wcy) * T;
			break;
		case Keys::Y:
			T = translate(-Wcx, -Wcy) * T;
			T = rotate(-0.05f) * T;
			T = translate(Wcx, Wcy) * T;
			break;

		case Keys::T:
			T = translate(0.f, -10.f) * T;
			break;
		case Keys::G:
			T = translate(0.f, 10.f) * T;
			break;
		case Keys::F:
			T = translate(-10.f, 0.f) * T;
			break;
		case Keys::H:
			T = translate(10.f, 0.f) * T;
			break;

		case Keys::Z:
			T = translate(-Wcx, -Wcy) * T;
			T = scale(1.1f) * T;
			T = translate(Wcx, Wcy) * T;
			break;
		case Keys::X:
			T = translate(-Wcx, -Wcy) * T;
			T = scale(1 / 1.1f) * T;
			T = translate(Wcx, Wcy) * T;
			break;

		case Keys::U:
			T = translate(-Wcx, -Wcy) * T;
			T = mirrorX() * T; 
			T = translate(Wcx, Wcy) * T;
			break;
		case Keys::J:
			T = translate(-Wcx, -Wcy) * T;
			T = mirrorY() * T;
			T = translate(Wcx, Wcy) * T;
			break;

		case Keys::I:
			T = translate(-Wcx, -Wcy) * T;
			T = scale(1.1f, 1.f) * T;
			T = translate(Wcx, Wcy) * T;
			break;
		case Keys::K:
			T = translate(-Wcx, -Wcy) * T;
			T = scale(1 / 1.1f, 1.f) * T;
			T = translate(Wcx, Wcy) * T;
			break;

		case Keys::O:
			T = translate(-Wcx, -Wcy) * T;
			T = scale(1.f, 1.1f) * T;
			T = translate(Wcx, Wcy) * T;
			break;
		case Keys::L:
			T = translate(-Wcx, -Wcy) * T;
			T = scale(1.f, 1 / 1.1f) * T;
			T = translate(Wcx, Wcy) * T;
			break;

		default:
			break;
		}
		Refresh();
	}
	private: System::Void btnOpen_Click(System::Object^ sender, System::EventArgs^ e) {
		if (openFileDialog->ShowDialog() == System::Windows::Forms::DialogResult::OK)
		{
			wchar_t fileName[1024];
			for (int i = 0; i < openFileDialog->FileName->Length; ++i)
				fileName[i] = openFileDialog->FileName[i];
			fileName[openFileDialog->FileName->Length] = '\0';

			ifstream in;
			in.open(fileName);
			if (in.is_open())
			{
				figure.clear();
				float thickness = 2;
				float r, g, b;
				r = g = b = 0;
				string cmd;
				
				string str;
				getline(in, str);
				while (in)
				{
					if ((str.find_first_not_of(" \t\r\n") != string::npos) && (str[0] != '#'))
					{
						stringstream s(str);
						s >> cmd;
						if (cmd == "frame")
						{
							s >> Vx >> Vy;
							aspectFig = Vx / Vy;
							float Wx = ClientRectangle.Width;
							float Wy = ClientRectangle.Height;
							float aspectForm = Wx / Wy;
							float S = aspectFig < aspectForm ? Wy / Vy : Wx / Vx;
							float Ty = S * Vy;
							initT = translate(0.f, Ty) * scale(S, -S);
							T = initT;
						}
						else if (cmd == "color")
							s >> r >> g >> b;
						else if (cmd == "thickness")
							s >> thickness;
						else if (cmd == "path")
						{
							vector<vec2> vertices;
							int N;
							s >> N;
							string str1;
							while (N > 0)
							{
								getline(in, str1);
								if ((str1.find_first_not_of(" \t\r\n") != string::npos) && (str1[0] != '#'))
								{
									float x, y;
									stringstream s1(str1);
									s1 >> x >> y;
									vertices.push_back(vec2(x, y));
									N--;
								}
							}
							figure.push_back(path(vertices, vec3(r, g, b), thickness));
						}
					}
					getline(in, str);
				}
				Refresh();
			}
		}
	}
};
}