/////////////////////////////////////////////////////////////////////////////////
//	
// PTriangle.h: interface for the CPTriangle class.
//
////////////////////////////////////////////////////////////////////////////////
// 版權(quán)所有(2002)
// Copyright(2002)
// 編寫者: 向世明
// Author: Xiang Shiming

//三角形基元----Primitive triangle (PTriangle)

#ifndef _CPTRIANGLE_H
#define _CPTRIANGLE_H
#include "Grphcs.h"

class CPTriangle  
{
public:

	void Flat(CDC* pDC,  POINT pt1,  POINT pt2,  POINT pt3,  COLORREF clr);
	void Gouraud(CDC* pDC,  POINT pt1,  POINT pt2,  POINT pt3,   FLOATCOLORRGB clr1, FLOATCOLORRGB clr2, FLOATCOLORRGB clr3);
	void Fill(CDC* pDC, POINT pt1, POINT pt2, POINT pt3, CPen& pen, CBrush& brush);
	
	CPTriangle();
	virtual ~CPTriangle();

private:
	void Scan(CDC* pDC, int x1, int x2, int nScanLine, FLOATCOLORRGB clr1, FLOATCOLORRGB clr2);
	void DealEdge(CDC* pDC,  int x1, int y1, int x2, int y2, FLOATCOLORRGB clr1, FLOATCOLORRGB clr2, int* pnCoord, FLOATCOLORRGB* pClrEdge,  DWORD dwFeature = G3D_TRIANGLE_ON_LINE_RIGHT);

};

#endif