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// OpenGLDC.h: interface for the COpenGLDC class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#if !defined(AFX_OPENGLDC_H__30E692A3_4129_11D4_B1EE_0010B539EBC0__INCLUDED_) 
#define AFX_OPENGLDC_H__30E692A3_4129_11D4_B1EE_0010B539EBC0__INCLUDED_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
#include "gl/gl.h" 
#include "gl/glu.h" 
#include "gl/glaux.h" 
 
#include "camera.h" 
#include "..\inc\GeomCalc\cadbase.h" 
 
#define BUFFER_LENGTH 64 
 
class AFX_EXT_CLASS COpenGLDC : public CObject   
{ 
public: 
	COpenGLDC(HWND hWnd); 
	virtual ~COpenGLDC(); 
 
private: 
	HWND	m_hWnd; 
	HGLRC	m_hRC; 
	HDC		m_hDC; 
 
	COLORREF	m_clrBk;		//Background Color 
	COLORREF	m_clr;			//Polygon Color for unshading 
	COLORREF	m_clrHighlight; //for highlight using 
	COLORREF	m_clrMaterial;  //for normal rendering 
	BOOL		m_bShading;		//use material property 
	GLfloat		m_vecLight[3];	//lighting direction 
 
	//selection 
	BOOL	m_bSelectionMode; 
	GLuint	m_selectBuff[BUFFER_LENGTH]; 
public: 
	GCamera		m_Camera; 
	GCamera		m_CameraPrev; 
 
protected: 
	void ClearBkground(); 
	void OnShading(); 
 
public: 
	//initialize 
	BOOL InitDC(); 
	void GLResize(int cx,int cy); 
	void GLSetupRC(); 
 
	//uMode :zero for normal rendering. non-zero for selection 
	void Ready(); 
	void Finish(); 
 
	/////////////////////// light & color ////////////////////// 
	void Shading(BOOL bShading); 
	BOOL IsShading(); 
 
	void Lighting(BOOL bLighting); 
	BOOL IsLighting(); 
 
	//Light direction 
	void SetLightDirection(float dx,float dy,float dz); 
	void GetLightDirection(float& dx,float& dy,float& dz); 
 
	//material 
	void SetMaterialColor(COLORREF clr); 
	void GetMaterialColor(COLORREF& clr); 
	 
	//back ground 
	void SetBkColor(COLORREF rgb); 
	void GetBkColor(COLORREF& rgb); 
	 
	//frame material 
	void SetColor(COLORREF rgb); 
	void GetColor(COLORREF& rgb); 
 
	//high light setting 
	void SetHighlightColor(COLORREF clr); 
	void GetHighlightColor(COLORREF& clr); 
	void Highlight(BOOL bLight = TRUE); 
 
 
	/////////////////// Drawing //////////////////// 
	void DrawPoint(const CPoint3D&); 
 
	//drawing curves 
	void DrawCoord(); 
 
	void DrawLine(const CPoint3D& sp,const CPoint3D& ep); 
	void DrawPolyline(const CPoint3D* pt,int size); 
	 
	//drawing surface 
	void DrawTriChip(double n0,double n1,double n2,double v00,double v01,double v02, 
					double v10,double v11,double v12,double v20,double v21,double v22); 
 
	//drawing solid entities 
	void DrawSphere(const CPoint3D& cen,double r,const CVector3D& vec); 
	void DrawCylinder(const CPoint3D& cen,double r,const CVector3D& h); 
	void DrawCone(const CPoint3D& cen,double r,const CVector3D& h); 
	void DrawTorus(const CPoint3D& cen,const CVector3D& ax,double r_in,double r_out); 
 
	//selection Mode 
	void	BeginSelection(int xPos,int yPos); 
	int		EndSelection(UINT* items); 
	BOOL	IsSelectionMode(); 
 
	void	InitNames(); 
	void	LoadName(UINT name); 
	void	PushName(UINT name); 
	void    PopName(); 
 
}; 
 
class AFX_EXT_CLASS CGLView : public CView 
{ 
protected: 
	COpenGLDC*	m_pGLDC; 
 
protected: // create from serialization only 
	CGLView(); 
	DECLARE_DYNCREATE(CGLView) 
 
// Attributes 
public: 
	virtual void RenderScene(COpenGLDC* pDC); 
 
	// Operations 
public: 
 
// Overrides 
	// ClassWizard generated virtual function overrides 
	//{{AFX_VIRTUAL(CGLView) 
	public: 
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view 
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs); 
	//}}AFX_VIRTUAL 
 
// Implementation 
public: 
	virtual ~CGLView(); 
 
protected: 
 
// Generated message map functions 
protected: 
	//{{AFX_MSG(CGLView) 
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); 
	afx_msg void OnDestroy(); 
	afx_msg void OnSize(UINT nType, int cx, int cy); 
	afx_msg BOOL OnEraseBkgnd(CDC* pDC); 
	//}}AFX_MSG 
	DECLARE_MESSAGE_MAP() 
 
	virtual BOOL GetBox(double& x0,double& y0,double& z0,double& x1,double& y1,double& z1); 
	 
	void	Zoom(double dScale); 
	void	ZoomAll(); 
	void	OnViewType(UINT type); 
}; 
#endif // !defined(AFX_OPENGLDC_H__30E692A3_4129_11D4_B1EE_0010B539EBC0__INCLUDED_)