Question

我正在尝试使用C ++，OpenGL和GLM实现FPS相机。

到目前为止我做了什么：

我有一个相机位置的cameraPosition矢量，还有 cameraForward（指向相机所在的位置），cameraRight和cameraUp，计算方式如下：

inline void controlCamera(GLFWwindow* currentWindow, const float& mouseSpeed, const float& deltaTime)
{
    double mousePositionX, mousePositionY;
    glfwGetCursorPos(currentWindow, &mousePositionX, &mousePositionY);

    int windowWidth, windowHeight;
    glfwGetWindowSize(currentWindow, &windowWidth, &windowHeight);

    m_cameraYaw += (windowWidth / 2 - mousePositionX) * mouseSpeed;
    m_cameraPitch += (windowHeight / 2 - mousePositionY) * mouseSpeed;
    lockCamera();

    glfwSetCursorPos(currentWindow, windowWidth / 2, windowHeight / 2);

    // Rotate the forward vector horizontally. (the first argument is the default forward vector)
    m_cameraForward = rotate(vec3(0.0f, 0.0f, -1.0f), m_cameraYaw, vec3(0.0f, 1.0f, 0.0f));

    // Rotate the forward vector vertically.
    m_cameraForward = rotate(m_cameraForward, -m_cameraPitch, vec3(1.0f, 0.0f, 0.0f));

    // Calculate the right vector. First argument is the default right vector.
    m_cameraRight = rotate(vec3(1.0, 0.0, 0.0), m_cameraYaw, vec3(0.0f, 1.0f, 0.0f));

    // Calculate the up vector.
    m_cameraUp = cross(m_cameraRight, m_cameraForward);
}

然后我＆＃34;看看＆＃34;像这样：

lookAt(m_cameraPosition, m_cameraPosition + m_cameraForward, m_cameraUp)

问题：我似乎错过了一些东西，因为我的FPS相机正常工作，直到我前进并落后于Z（0.0）（z变为负片）..然后我的垂直鼠标外观翻转，当我试着抬头查看我的应用程序...

这里问了同样的问题：glm::lookAt vertical camera flips when z <= 0，但我不明白问题是什么以及如何解决。

编辑：问题肯定在向前，向上和向右的向量中。当我像这样计算它们时：

        m_cameraForward = vec3(
            cos(m_cameraPitch) * sin(m_cameraYaw),
            sin(m_cameraPitch),
            cos(m_cameraPitch) * cos(m_cameraYaw)
        );

        m_cameraRight = vec3(
            sin(m_cameraYaw - 3.14f/2.0f),
            0,
            cos(m_cameraYaw - 3.14f/2.0f)
        );

        m_cameraUp = glm::cross(m_cameraRight, m_cameraForward);

然后问题消失了，但是m_cameraPitch和m_cameraYaw不匹配...我的意思是如果m_cameraYaw是250而我做了180翻转m_cameraYaw是265 ...我不能限制向后倾斜比如那样？有什么想法吗？

glm look当F＆lt;时，FPS相机翻转垂直鼠标外观。 0

0 个答案: