camera.cpp

3D赛车游戏源代码-用Visual Studio 2005

#include "StdAfx.h"
#include "Camera.h"
#include "CarObject.h"
#include "CarObject.h"
#include "MathUtil.h"
#include "OGLutil.h"

//-------------------------------------------------------------------------------
// 常数定义
//-------------------------------------------------------------------------------
const float kCameraTheta    = -75.0f;
const float kCameraDistance = -18.0f;

//-------------------------------------------------------------------------------
// 构造函数
//-------------------------------------------------------------------------------
CCamera::CCamera()
{
}

//-------------------------------------------------------------------------------
// 跟随某个汽车的模式来观看
//-------------------------------------------------------------------------------
void CCamera::FollowLookCar(const CCarObject& car)
{
	CMatrix44F mat = car.GetTransformObjToWorld();
	mat.Rotate(3, -car.GetWheelTurnRadian());

	mat.AffineInverse();


	glTranslatef(0, 0, kCameraDistance);
	glRotatef(kCameraTheta, 1, 0, 0);
	glMultMatrixf(mat.m);
}