游戏引擎

开发平台：

Visual C++

Camera.cpp：源码内容

							// Camera.cpp: implementation of the CCamera class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "Camera.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CCamera::CCamera()
{
    m_CamPos=VERTEX(10,0,10);
    m_CamDirection=NORMAL(1,0,0);
	m_CamRotX=0;
	m_CamRotY=-90;
	m_CamRotZ=0;
	m_VisualAngle=60;
}
CCamera::~CCamera()
{
}
void CCamera::UpdateCamera(VERTEX position,float rotX,float rotY,float rotZ)
{
    m_CamPos=position;
	m_CamRotX=rotX;
	m_CamRotY=rotY;
	m_CamRotZ=rotZ;
	m_CamDirection=NORMAL(-cosf(rotX*0.0174533f)*sinf(rotY*0.0174533f),
		                  sinf(rotX*0.0174533f),
						  -cosf(rotX*0.0174533f)*cosf(rotY*0.0174533f));
	m_CamDirection=math.Normalization(m_CamDirection);
}
void CCamera::UpdateCamera(VERTEX newFoucs)
{
	m_CamDirection=NORMAL(newFoucs.xpos-m_CamPos.xpos,newFoucs.ypos-m_CamPos.ypos,newFoucs.zpos-m_CamPos.zpos);
	m_CamDirection=math.Normalization(m_CamDirection);
	m_CamRotX=asinf(m_CamDirection.ny)*57.29578f;
	m_CamRotY=acosf(-m_CamDirection.nz/(sqrt(m_CamDirection.nz*m_CamDirection.nz+m_CamDirection.nx*m_CamDirection.nx)))*57.29578f;
//	m_CamRotY=float(57.29583f*acos(-m_CamDirection.nz/(sqrt(m_CamDirection.nz*m_CamDirection.nz+m_CamDirection.nx*m_CamDirection.nx))));
	if(m_CamDirection.nx>0)m_CamRotY=360-m_CamRotY;
}
void CCamera::SetVisualAngle(float visualAngle)
{
	m_VisualAngle=visualAngle;
}
float CCamera::GetAngleCosine(VERTEX point)
{
    float cosValue=math.GetTwoVectorAngleCosine(NORMAL(point.xpos-m_CamPos.xpos,
		                                 point.ypos -m_CamPos.ypos,
										 point.zpos-m_CamPos.zpos ) , 
										 m_CamDirection);
	if(cosValue>cosf(m_VisualAngle*0.0174533f))
	{
		return cosValue;
	}
    return 0;
}
bool CCamera::IsOnFoucs(VERTEX point)
{
    return false;
}

						