// zadanie 1.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "zadanie 1.h"
#include <cmath>

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name
int ak = 0;

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);
VOID DRAW_TEST(HDC hdc, int ak, int xend, int yend);
Gdiplus::PointF getpoc2(int angle,bool right,int x,int y,int length);

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPTSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;
	GdiplusStartupInput gdiplusStartupInput;
	ULONG_PTR gdiplusToken;
	GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_ZADANIE1, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_ZADANIE1));

	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}
	GdiplusShutdown(gdiplusToken);

	return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ZADANIE1));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_ZADANIE1);
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_RBUTTONDOWN:
	{
						   InvalidateRect(hWnd, NULL, true);
						   ak++; if (ak>1) ak = 0;
						   ::UpdateWindow(hWnd);
	}
		break;
	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		RECT rt;
		GetClientRect(hWnd, &rt);
		DRAW_TEST(hdc, ak, int(rt.right), int(rt.bottom));
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}
VOID DRAW_TEST(HDC hdc, int ak, int xend, int yend)
{
	int max = min(xend, yend);


	Graphics graphics(hdc); // инициация на графичен обект върху екрана
	Rect ellipseRect(xend / 2 - max / 2, yend / 2 - max / 2, max, max);// xend / 2+max/2, yend / 2+max/2); //дефиниране на елипса с горен ляв ъгъл



	//на описващия правоъгълник в средата на растера и рамери ¼ растер
	Pen bluePen(Color(255, 0, 0, 255)); // дефиниране на син молив
	Pen redPen(Color(255, 255, 0, 0)); // дефиниране на червен молив
	Pen bpen(Color(0, 0, 0));
	Pen daga[7];
	daga[0] = bluePen;
	//if (ak == 1)
		graphics.DrawEllipse(&bpen, ellipseRect); //чертае елипса
	//else
		for (int i = 0; i < 2; i++)
			graphics.DrawLine(&daga[i], getpoc2(i * 10, true, xend / 2, yend / 2, max / 2),
			getpoc2(i * 10, false , xend / 2, yend / 2, max / 2)
			//Gdiplus::PointF(Gdiplus::REAL(xend/2),
									//			Gdiplus::REAL(yend/2))
												); //чертае отсечка
}
//Pen daga[2] = { Color(255, 0, 0),Color(255, 128, 0) };// , Color(255, 255, 0), Color(0, 255, 0), Color(0, 255, 255), Color(0, 0, 255), Color(255, 0, 255)};

Gdiplus::PointF getpoc2(int angle, bool right, int x, int y, int length)
{
	if (right)
	{
		return  Gdiplus::PointF(
									Gdiplus::REAL(_CMATH_::cos( 3.14*((float)angle)/180.0 )*((float)length)+(float)x),
									Gdiplus::REAL(_CMATH_::sin(3.14*((float)angle) / 180.0)*((float)length) + (float)y)

										);
	}
	else
	{
		return  Gdiplus::PointF(
			Gdiplus::REAL(_CMATH_::cos(3.14*((float)angle) / 180.0-3.14)*((float)length) + (float)x),
			Gdiplus::REAL(_CMATH_::sin(3.14*((float)angle) / 180.0-3.14)*((float)length) + (float)y)

			);
	}
}