用opengl绘制的兔子

#include 								
#include “glew.h“									
#include “glaux.h“									

#include “math.h“                                    
#include “ArcBall.h“                                 

//轨迹球参数:
//直径					2.0f
//半径					1.0f
//半径平方				1.0f


void ArcBall_t::_mapToSphere（const Point2fT* NewPt Vector3fT* NewVec） const
{
    Point2fT TempPt;
    GLfloat length;

    //复制到临时变量
    TempPt = *NewPt;

    //把长宽调整到[-1 ... 1]区间
    TempPt.s.X  =        （TempPt.s.X * this->AdjustWidth）  - 1.0f;
    TempPt.s.Y  = 1.0f - （TempPt.s.Y * this->AdjustHeight）;

    //计算长度的平方
    length      = （TempPt.s.X * TempPt.s.X） + （TempPt.s.Y * TempPt.s.Y）;

    //如果点映射到球的外面
    if （length > 1.0f）
    {
        GLfloat norm;

        //缩放到球上
        norm    = 1.0f / FuncSqrt（length）;

        //设置z坐标为0
        NewVec->s.X = TempPt.s.X * norm;
        NewVec->s.Y = TempPt.s.Y * norm;
        NewVec->s.Z = 0.0f;
    }
	//如果在球内
    else   
    {
        //利用半径的平方为1求出z坐标
        NewVec->s.X = TempPt.s.X;
        NewVec->s.Y = TempPt.s.Y;
        NewVec->s.Z = FuncSqrt（1.0f - length）;
    }
}

ArcBall_t::ArcBall_t（GLfloat NewWidth GLfloat NewHeight）
{
    this->StVec.s.X     =
    this->StVec.s.Y     = 
    this->StVec.s.Z     = 

    this->EnVec.s.X     =
    this->EnVec.s.Y     = 
    this->EnVec.s.Z     = 0.0f;

    this->setBounds（NewWidth NewHeight）;
}

//按下鼠标记录当前对应的轨迹球的位置
void    ArcBall_t::click（const Point2fT* NewPt）
{
    this->_mapToSphere（NewPt &this->StVec）;
}

//鼠标拖动计算旋转四元数
void    ArcBall_t::drag（const Point2fT* NewPt Quat4fT* NewRot）
{
    //新的位置
    this->_mapToSphere（NewPt &this->EnVec）;

    //计算旋转
    if （NewRot）
    {
        Vector3fT  Perp;

        //计算旋转轴
        Vector3fCross（&Perp &this->StVec &this->EnVec）;

        //如果不为0
        if （Vector3fLength（&Perp） > Epsilon）    
        {
            //记录旋转轴
            NewRot->s.X = Perp.s.X;
            NewRot->s.Y = Perp.s.Y;
            NewRot->s.Z = Perp.s.Z;
            //在四元数中w=cos（a/2），a为旋转的角度
            NewRot->s.W= Vector3fDot（&this->StVec &this->EnVec）;
        }
		//是0，说明没有旋转
        else                                 
        {
            NewRot->s.X = 
            NewRot->s.Y = 
            NewRot->s.Z = 
            NewRot->s.W = 0.0f;
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件    7719936  2009-04-26 12:44  bunny48_ArcBall.ncb

     文件       4537  2009-05-15 09:54  bunny48_ArcBall.vcproj

     文件       1423  2009-05-15 15:18  bunny48_ArcBall.vcproj.20090401-1254.Administrator.user

     文件       2516  2006-08-21 07:18  bunnyArcBall.cpp

     文件      13088  2006-08-13 12:53  bunnyArcBall.h

     文件      32904  2009-05-15 09:54  bunnyunny.aps

     文件       9361  2009-05-15 10:38  bunnyunny.cpp

     文件    2417019  2000-10-11 01:34  bunnyunny.dat

     文件    9415680  2009-05-15 15:18  bunnyunny.ncb

     文件       1418  2009-05-15 09:54  bunnyunny.rc

     文件        879  2009-04-26 10:04  bunnyunny.sln

    ..A..H.     25600  2009-05-15 15:18  bunnyunny.suo

     文件     593920  2009-05-15 10:38  bunnyDebug48_ArcBall.exe

     文件        146  2009-04-26 10:05  bunnyDebug48_ArcBall.exe.embed.manifest

     文件        212  2009-04-26 10:05  bunnyDebug48_ArcBall.exe.embed.manifest.res

     文件        145  2009-05-15 10:38  bunnyDebug48_ArcBall.exe.intermediate.manifest

     文件    1296180  2009-05-15 10:38  bunnyDebug48_ArcBall.ilk

     文件      48332  2009-04-26 11:15  bunnyDebug48_ArcBall.obj

     文件    2345984  2009-05-15 10:38  bunnyDebug48_ArcBall.pdb

     文件      28647  2009-04-26 10:05  bunnyDebugArcBall.obj

     文件      10062  2009-05-15 10:38  bunnyDebugBuildLog.htm

     文件    2417019  2000-10-11 01:34  bunnyDebugunny.dat

     文件      55068  2009-05-15 10:38  bunnyDebugunny.obj

     文件     192512  2006-03-04 03:19  bunnyDebugglew32.dll

     文件     121856  2004-08-04 08:52  bunnyDebugglu32.dll

     文件     169984  1998-08-18 23:25  bunnyDebugglut32.dll

     文件         67  2009-05-15 10:38  bunnyDebugmt.dep

     文件      39995  2009-05-15 09:41  bunnyDebugNeHeGL.obj

     文件     713728  2004-08-04 08:52  bunnyDebugopengl32.dll

     文件     396288  2009-05-15 10:38  bunnyDebugvc80.idb

............此处省略26个文件信息