stlreader.h

关于stl模型的加载

#ifndef _STLREADER_H_
#define _STLREADER_H_

#include <cstdio>
#define BUFFER_SIZE 512

typedef struct _CPoint3D
{//点
	double x;
	double y;
	double z;
} CPoint3D, CVector3D;

typedef struct _CTriangle
{//三角形
	CPoint3D vertexs[3];
	CVector3D normal;
} CTriangle;

class CModel3D
{//一个简单的模型
public:
	struct _CBBox
	{//包围盒
		CPoint3D min;
		CPoint3D max;
	};

public:
	unsigned		m_nTriangles;
	CTriangle*		m_pTriangles;
	CPoint3D		m_stCenter;
	_CBBox		m_stBox;
	double			m_dbDiagonal;

	char				m_strFileName[BUFFER_SIZE];
	char				m_strModelName[BUFFER_SIZE];

	bool				m_bIsWired;
	bool				m_bIsShaded;

	float				m_fColor[4];


public:
	CModel3D();
	~CModel3D();
	bool readFromSTL(char* fileName);
	void renderModel();
	void showInfo();

private:
	void clearModel();
	void doCount(FILE* pModelFile);
	void readData(FILE* pModelFile);
	void computeBoundBox();
	void computeNormal();
};


#endif