/************************************************
*?Project?Information:
*
*?Filename:mathlib.cpp
*?Version?:1.0
*?Last?Update:?May?2003
*
*?Author:?Bruce?Christopher?Barrera
*?E-mail:?bruce@opengl.com.br
*?Date??:?around?May?2003?:-）
*
*?Comment:?This?is?the?math?library
*
***********************************************/

#include?“mathlib.h“

//?This?calculates?a?vector?between?2?points?and?returns?the?result
CVector3?Vector（CVector3?vPoint1?CVector3?vPoint2）
{
	CVector3?vVector;							//?The?variable?to?hold?the?resultant?vector

	vVector.x?=?vPoint1.x?-?vPoint2.x;			//?Subtract?point1?and?point2?x‘s
	vVector.y?=?vPoint1.y?-?vPoint2.y;			//?Subtract?point1?and?point2?y‘s
	vVector.z?=?vPoint1.z?-?vPoint2.z;			//?Subtract?point1?and?point2?z‘s

	return?vVector;								//?Return?the?resultant?vector
}

//?This?adds?2?vectors?together?and?returns?the?result
CVector3?AddVector（CVector3?vVector1?CVector3?vVector2）
{
	CVector3?vResult;							//?The?variable?to?hold?the?resultant?vector
	
	vResult.x?=?vVector2.x?+?vVector1.x;		//?Add?Vector1?and?Vector2?x‘s
	vResult.y?=?vVector2.y?+?vVector1.y;		//?Add?Vector1?and?Vector2?y‘s
	vResult.z?=?vVector2.z?+?vVector1.z;		//?Add?Vector1?and?Vector2?z‘s

	return?vResult;								//?Return?the?resultant?vector
}

//?This?divides?a?vector?by?a?single?number?（scalar）?and?returns?the?result
CVector3?DivideVectorByScaler（CVector3?vVector1?float?Scaler）
{
	CVector3?vResult;							//?The?variable?to?hold?the?resultant?vector
	
	vResult.x?=?vVector1.x?/?Scaler;			//?Divide?Vector1‘s?x?value?by?the?scaler
	vResult.y?=?vVector1.y?/?Scaler;			//?Divide?Vector1‘s?y?value?by?the?scaler
	vResult.z?=?vVector1.z?/?Scaler;			//?Divide?Vector1‘s?z?value?by?the?scaler

	return?vResult;								//?Return?the?resultant?vector
}

//?This?returns?the?cross?product?between?2?vectors
CVector3?Cross（CVector3?vVector1?CVector3?vVector2）
{
	CVector3?vCross;								//?The?vector?to?hold?the?cross?product
												//?Get?the?X?value
	vCross.x?=?（（vVector1.y?*?vVector2.z）?-?（vVector1.z?*?vVector2.y））;
												//?Get?the?Y?value
	vCross.y?=?（（vVector1.z?*?vVector2.x）?-?（vVector1.x?*?vVector2.z））;
												//?Get?the?Z?value
	vCross.z?=?（（vVector1.x?*?vVector2.y）?-?（vVector1.y?*?vVector2.x））;

	return?vCross;								//?Return?the?cross?product
}

//?This?returns?the?normal?of?a?vector
CVector3?Normalize（CVector3?vNormal）
{
	double?Magnitude;							//?This?holds?the?magitude			

	Magnitude?=?Mag（vNormal）;					//?Get?the?magnitude

	vNormal.x?/=?（float）Magnitude;				//?Divide?the?vector‘s?X?by?the?magnitude
	vNormal.y?/=?（float）Magnitude;				//?Divide?the?vector‘s?Y?by?the?magnitude
	vNormal.z?/=?（float）Magnitude;				//?Divide?the?vector‘s?Z?by?the?magnitude

	return?vNormal;								//?Return?the?normal
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1183??2003-10-17?19:01??NeheGL_Glut\devcpp\Makefile.win

?????文件???????1326??2003-10-17?19:01??NeheGL_Glut\devcpp\nehegl_glut.dev

?????文件?????????73??2003-10-17?12:45??NeheGL_Glut\devcpp\nehegl_glut.layout

?????文件????????127??2003-10-17?19:02??NeheGL_Glut\devcpp\NEHEGL~1.layout

?????文件??????98348??2003-10-17?18:32??NeheGL_Glut\exe\logo.tga

?????文件??????26123??2003-10-17?19:14??NeheGL_Glut\exe\nehegl_glut

?????文件?????117807??2003-10-17?19:02??NeheGL_Glut\exe\nehegl_glut.exe

?????文件??????15724??2003-10-17?19:13??NeheGL_Glut\exe\nehegl_glut.o

?????文件???????8384??2003-10-17?19:13??NeheGL_Glut\exe\tga.o

?????文件????????267??2003-10-17?18:32??NeheGL_Glut\linux\Makefile

?????文件???????9972??2003-10-17?19:14??NeheGL_Glut\linux\nehegl_glut.o

?????文件???????3280??2003-10-17?19:14??NeheGL_Glut\linux\tga.o

?????文件???????4566??2003-10-17?18:57??NeheGL_Glut\msvc++\nehegl_glut.dsp

?????文件????????545??2003-10-17?11:49??NeheGL_Glut\msvc++\nehegl_glut.dsw

?????文件??????33792??2003-10-17?19:01??NeheGL_Glut\msvc++\nehegl_glut.ncb

?????文件??????48640??2003-10-17?19:01??NeheGL_Glut\msvc++\nehegl_glut.opt

?????文件???????1326??2003-10-17?19:01??NeheGL_Glut\msvc++\nehegl_glut.plg

?????文件???????1436??2003-10-17?19:05??NeheGL_Glut\readme

?????文件???????1520??2003-10-17?12:41??NeheGL_Glut\src\frames.h

?????文件???????2851??2003-10-17?11:49??NeheGL_Glut\src\mathlib.cpp

?????文件???????1716??2003-10-17?11:49??NeheGL_Glut\src\mathlib.h

?????文件??????15253??2003-10-17?19:01??NeheGL_Glut\src\nehegl_glut.cpp

?????文件???????1478??2003-10-17?19:14??NeheGL_Glut\src\nehegl_glut.msp

?????文件???????9941??2003-10-17?19:01??NeheGL_Glut\src\nehegl_glut.o

?????文件??????11735??2003-10-17?18:32??NeheGL_Glut\src\tga.cpp

?????文件????????774??2003-10-17?18:32??NeheGL_Glut\src\tga.h

?????文件???????2963??2003-10-17?19:01??NeheGL_Glut\src\tga.o

?????目錄??????????0??2003-10-17?18:32??NeheGL_Glut\devcpp

?????目錄??????????0??2003-10-17?19:14??NeheGL_Glut\exe

?????目錄??????????0??2003-10-17?19:14??NeheGL_Glut\linux

............此處省略6個(gè)文件信息