帮助3D摄像机类

如何解决帮助3D摄像机类

| 我正在尝试增加相机在Y轴上上下移动的功能，这是它当前不支持的功能。我试过在按下W和S时将Y值相加，但无法正常工作。我需要哪种配方？我知道这与间距和添加到Y轴有关。

void WALKING_CAMERA::Update(double time)
{
    //calculate the distance to move,based on time passed
    static double lastTime=time;
    double timePassed=time-lastTime;
    lastTime=time;

    float distance=speed*(float)timePassed/1000;

    //Get the mouse position
    POINT mPos;
    GetCursorPos(&mPos);

    angleYaw+=((float)mPos.x-320.0f)*speed/20;
    anglePitch+=((float)mPos.y-240.0f)*speed/20;

    //make sure angleY is not too great
    if(anglePitch>85.0f)
        anglePitch=85.0f;

    if(anglePitch<-85.0f)
        anglePitch=-85.0f;

    //set the mouse back to the centre of the screen
    SetCursorPos(320,240);

    //move forward/back or strafe
    if(window.isKeypressed(VK_UP) || window.isKeypressed(\'W\'))
    {
        position.x += (float)sin(angleYaw*M_PI/180)*distance*25;
        position.z -= (float)cos(angleYaw*M_PI/180)*distance*25;
    }

    if(window.isKeypressed(VK_DOWN) || window.isKeypressed(\'S\'))
    {
        position.x -= (float)sin(angleYaw*M_PI/180)*distance*25;
        position.z += (float)cos(angleYaw*M_PI/180)*distance*25;
    }

    if(window.isKeypressed(VK_RIGHT) || window.isKeypressed(\'D\'))
    {
        position.x += (float)cos(angleYaw*M_PI/180)*distance*25;
        position.z += (float)sin(angleYaw*M_PI/180)*distance*25;
    }

    if(window.isKeypressed(VK_LEFT) || window.isKeypressed(\'A\'))
    {
        position.x -= (float)cos(angleYaw*M_PI/180)*distance*25;
        position.z -= (float)sin(angleYaw*M_PI/180)*distance*25;
    }
}

谢谢！     

解决方法

        为了向前移动，应该执行以下操作：

position.y += (float)sin(anglePitch * M_PI / 180) * distance * 25;

您可能需要反转符号，因为我不确定您的应用程序是使用正Y还是负Y值进行向上移动。