//=============================================================================
//?Name:?CameraClass.cpp
//	Des:?一個封裝了實現(xiàn)虛擬攝像機的類的源文件
//?2013年?3月10日??Create?by?淺墨?
//=============================================================================
#include?“Camera.h“

#ifndef?WINDOW_WIDTH
#define?WINDOW_WIDTH	800						//為窗口寬度定義的宏，以方便在此處修改窗口寬度
#define?WINDOW_HEIGHT	600					//為窗口高度定義的宏，以方便在此處修改窗口高度
#endif

//-----------------------------------------------------------------------------
//?Desc:?構造函數(shù)
//-----------------------------------------------------------------------------
CameraClass::CameraClass（IDirect3DDevice9?*pd3dDevice）
{

	m_pd3dDevice?=?pd3dDevice;
	m_vRightVector??=?D3DXVECTOR3（1.0f?0.0f?0.0f）;???//?默認右向量與X正半軸重合
	m_vUpVector?????=?D3DXVECTOR3（0.0f?1.0f?0.0f）;???//?默認上向量與Y正半軸重合
	m_vLookVector???=?D3DXVECTOR3（0.0f?0.0f?1.0f）;???//?默認觀察向量與Z正半軸重合
	m_vCameraPosition??=?D3DXVECTOR3（0.0f?-50.0f?0.0f）;???//?默認攝像機坐標為（0.0f?0.0f?-250.0f）
	m_vTargetPosition????=?D3DXVECTOR3（0.0f?0.0f?0.0f）;//默認觀察目標位置為（0.0f?0.0f?0.0f）;

}


//-----------------------------------------------------------------------------
//?Name：CameraClass::CalculateViewMatrix（?）
//?Desc:?根據(jù)給定的矩陣計算出取景變換矩陣
//-----------------------------------------------------------------------------
VOID?CameraClass::CalculateViewMatrix（D3DXMATRIX?*pMatrix）?
{
	//1.先把3個向量都規(guī)范化并使其相互垂直，成為一組正交矩陣
	D3DXVec3Normalize（&m_vLookVector?&m_vLookVector）;??//規(guī)范化觀察分量
	D3DXVec3Cross（&m_vUpVector?&m_vLookVector?&m_vRightVector）;????//?上向量與觀察向量垂直
	D3DXVec3Normalize（&m_vUpVector?&m_vUpVector）;????????????????//?規(guī)范化上向量
	D3DXVec3Cross（&m_vRightVector?&m_vUpVector?&m_vLookVector）;????//?右向量與上向量垂直
	D3DXVec3Normalize（&m_vRightVector?&m_vRightVector）;??????????//?規(guī)范化右向量


	//?2.創(chuàng)建出取景變換矩陣
	//依次寫出取景變換矩陣的第一行
	pMatrix->_11?=?m_vRightVector.x;???????????//?Rx
	pMatrix->_12?=?m_vUpVector.x;??????????????//?Ux
	pMatrix->_13?=?m_vLookVector.x;????????????//?Lx
	pMatrix->_14?=?0.0f;
	//依次寫出取景變換矩陣的第二行
	pMatrix->_21?=?m_vRightVector.y;???????????//?Ry
	pMatrix->_22?=?m_vUpVector.y;??????????????//?Uy
	pMatrix->_23?=?m_vLookVector.y;????????????//?Ly
	pMatrix->_24?=?0.0f;
	//依次寫出取景變換矩陣的第三行
	pMatrix->_31?=?m_vRightVector.z;???????????//?Rz
	pMatrix->_32?=?m_vUpVector.z;??????????????//?Uz
	pMatrix->_33?=?m_vLookVector.z;????????????//?Lz
	pMatrix->_34?=?0.0f;
	//依次寫出取景變換矩陣的第四行
	pMatrix->_41?=?-D3DXVec3Dot（&m_vRightVector?&m_vCameraPosition）;????//?-P*R
	pMatrix->_42?=?-D3DXVec3Dot（&m_vUpVector?&m_vCameraPosition）;???????//?-P*U
	pMatrix->_43?=?-D3DXVec3Dot（&m_vLookVector?&m_vCameraPosition）;?????//?-P*L
	pMatrix->_44?=?1.0f;
}


//-----------------------------------------------------------------------------
//?Name：CameraClass::SetTargetPosition（?）
//?Desc:?設置攝像機的觀察位置
//-----------------------------------------------------------------------------
VOID?CameraClass::SetTargetPosition（D3DXVECTOR3?*pLookat）?
{

	//先看看pLookat是否為默認值NULL
	if?（pLookat?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????20056??2008-08-13?01:29??MagicBox\Blue.bmp

?????文件???????9578??2014-05-22?21:37??MagicBox\Camera.cpp

?????文件???????1936??2014-05-22?21:37??MagicBox\Camera.h

?????文件?????159406??2008-08-13?03:00??MagicBox\cube.ico

?????文件??????20056??2008-08-13?01:29??MagicBox\Debug\Blue.bmp

?????文件??????52414??2014-05-22?21:37??MagicBox\Debug\Camera.obj

?????文件???????2390??2014-05-23?14:14??MagicBox\Debug\cl.command.1.tlog

?????文件??????36750??2014-05-23?14:14??MagicBox\Debug\CL.read.1.tlog

?????文件???????1940??2014-05-23?14:14??MagicBox\Debug\CL.write.1.tlog

?????文件???????1259??2014-05-22?21:51??MagicBox\Debug\Cube.obj

?????文件??????32724??2014-05-22?21:51??MagicBox\Debug\DirectInput.obj

?????文件??????20056??2008-08-13?01:25??MagicBox\Debug\Green.bmp

?????文件??????20056??2008-08-13?01:25??MagicBox\Debug\GreenBlue.bmp

?????文件??????20056??2008-08-13?00:23??MagicBox\Debug\Inside.bmp

?????文件??????20056??2008-08-13?01:42??MagicBox\Debug\Inside2.bmp

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link-cvtres.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link-cvtres.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1000-cvtres.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1000-cvtres.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1000.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1000.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1124-cvtres.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1124-cvtres.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1124.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1124.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1556-cvtres.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1556-cvtres.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1556.read.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.1556.write.1.tlog

?????文件??????????2??2014-05-23?21:48??MagicBox\Debug\link.3936-cvtres.read.1.tlog

............此處省略253個文件信息