//==============================================================
//==============================================================
//=?camera.cpp?=================================================
//=?Original?coders:?Trent?Polack?（trent@voxelsoft.com）		???=
//==============================================================
//=?The?routines?for?the?CCAMERA?class
//==============================================================
//==============================================================


//--------------------------------------------------------------
//--------------------------------------------------------------
//-?HEADERS?AND?LIBRARIES?--------------------------------------
//--------------------------------------------------------------
//--------------------------------------------------------------
#include?“camera.h“


//--------------------------------------------------------------
//--------------------------------------------------------------
//-?DEFINITIONS?------------------------------------------------
//--------------------------------------------------------------
//--------------------------------------------------------------

//--------------------------------------------------------------
//?Name:			CCAMERA::ComputeViewMatrix?-?public
//?Description:		Compute?the?information?for?the?camera
//?Arguments:		-fTimeDelta:?amount?to?interpolate?from?last?frame
//								?（defaults?to?1.0f）
//?Return?Value:	None
//--------------------------------------------------------------
void?CCAMERA::ComputeViewMatrix（?float?fTimeDelta?）
{
	if（?（?m_fYaw>=360.0f）?||?（?m_fYaw<=-360.0f?）?）
		m_fYaw=?0.0f;

	if（?m_fPitch>60.0f?）
		m_fPitch=?60.0f;
	if（?m_fPitch<-60.0f?）
		m_fPitch=?-60.0f;
?????
	float?cosYaw??=?cosf（?DEG_TO_RAD（?m_fYaw?）?）;
	float?sinYaw??=?sinf（?DEG_TO_RAD（?m_fYaw?）?）;
	float?sinPitch=?sinf（?DEG_TO_RAD（?m_fPitch?）?）;
	float?cosPitch=?cosf（?DEG_TO_RAD（?m_fPitch?）?）;

	m_vecForward[0]=?sinYaw?*?cosPitch;
	m_vecForward[1]=?sinPitch;
	m_vecForward[2]=?cosPitch?*?-cosYaw;

	m_vecLookAt=?m_vecEyePos?+?m_vecForward;

	m_vecSide=?m_vecForward.CrossProduct（?m_vecUp?）;
}

//--------------------------------------------------------------
//?Name:			CCAMERA::CalculateViewFrustum?-?public
//?Description:		Calculate?the?planes?that?make-up?the?viewing?m_viewFrustum
//?Arguments:		None
//?Return?Value:	None
//--------------------------------------------------------------
void?CCAMERA::CalculateViewFrustum（?void?）
{
	float?fPMtrx[16];	//projection?matrix
	float?fMMtrx[16];	//modelview?matrix
	float?clip[16];
	float?fNorm;

	/*?Get?the?current?PROJECTION?matrix?from?OpenGL?*/
	glGetFloatv（?GL_PROJECTION_MATRIX?fPMtrx?）;

	/*?Get?the?current?MODELVIEW?matrix?from?OpenGL?*/
	glGetFloatv（?GL_MODELVIEW_MATRIX?fMMtrx?）;

	/*?Combine?the?two?matrices?（multiply?projection?by?modelview）?*/
	clip[?0]=?fMMtrx[?0]*fPMtrx[?0]?+?fMMtrx[?1]*fPMtrx[?4]?+?fMMtrx[?2]*fPMtrx[?8]?+?fMMtr

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件???????26782??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\camera.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\camera.sbr
?????文件?????2262016??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\demo5_1.bsc
?????文件??????393338??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\demo5_1.exe
?????文件??????470300??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\demo5_1.ilk
?????文件??????211284??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\demo5_1.pch
?????文件??????877568??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\demo5_1.pdb
?????文件???????33276??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\geomipmapping.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\geomipmapping.sbr
?????文件???????44999??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\gl_app.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\gl_app.sbr
?????文件???????25464??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\image.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\image.sbr
?????文件???????19216??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\log.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\log.sbr
?????文件???????83617??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\main.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\main.sbr
?????文件???????31758??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\math_ops.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\math_ops.sbr
?????文件???????47324??2010-11-17?04:44??Code\Chapter?5\demo5_1\Debug\resource.res
?????文件???????43406??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\terrain.obj
?????文件???????????0??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\terrain.sbr
?????文件??????173056??2010-11-17?12:34??Code\Chapter?5\demo5_1\Debug\vc60.idb
?????文件???????86016??2010-11-17?11:14??Code\Chapter?5\demo5_1\Debug\vc60.pdb
?????文件???????26782??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\camera.obj
?????文件???????????0??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\camera.sbr
?????文件?????2180096??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\demo5_2.bsc
?????文件?????4991432??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\demo5_2.pch
?????文件?????1067525??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\geomipmapping.sbr
?????文件???????44999??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\gl_app.obj
?????文件???????????0??2010-11-17?04:43??Code\Chapter?5\demo5_2\Debug\gl_app.sbr
............此處省略773個(gè)文件信息