#pragma once
#pragma comment(lib, "Opengl32.lib")
#pragma comment(lib, "Glu32.lib")
#pragma comment(lib, "glut32.lib")

#include <gl/gl.h>
#include <gl/glu.h>
#include "glut.h"


// COpenGLView view

enum _Mouse { 
	BUTTON_UP = 0,
	LBUTTON_DOWN,
	RBUTTON_DOWN};

class COpenGLView : public CView
{
	DECLARE_DYNCREATE(COpenGLView)

private:
	int		m_PixelFormat;
	HGLRC	m_hRC;	// Rendering Context
	CDC*	m_pDC;	// Device Context
	HFONT	font;

	int _mouse;
	CPoint _mouseDownPoint;

	double _eyeDist;	
	double _angleHor;
	double _angleVer;
	CPoint3d _eyePos;

private:
	BOOL InitializeOpenGL();

protected:
	virtual BOOL SetupPixelFormat();
	virtual BOOL RenderScene();
	void RenderCoordinate();
	void RenderGridmap(int GridmapSize, int StepSize);

protected:
	COpenGLView();           // protected constructor used by dynamic creation
	virtual ~COpenGLView();

public:
	virtual void OnDraw(CDC* pDC);      // overridden to draw this view

#ifdef _DEBUG
	virtual void AssertValid() const;
#ifndef _WIN32_WCE
	virtual void Dump(CDumpContext& dc) const;
#endif
#endif

protected:
	DECLARE_MESSAGE_MAP()
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
public:
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnDestroy();
	afx_msg BOOL OnEraseBkgnd(CDC* pDC);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg BOOL OnMouseWheel(UINT nFlags, short zDelta, CPoint pt);
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnRButtonUp(UINT nFlags, CPoint point);
};