尝试将 MatrixViewProjection 传递给着色器时出错：“必须具有类/结构/联合”

Question

我在尝试学习一些 opengl 和着色器内容时遇到此错误...

代码：

#pragma once

#include "OpenGL.h"
#include "glm\glm.hpp"
#include "glm\gtx\transform.hpp"
#include "Camera.h"




class Transform
{


private:

glm::vec3 position;     
glm::vec3 rotation;
glm::vec3 scale;


public:
Transform(void);
~Transform(void);


inline glm::vec3* GetPos() { return &position; }
inline glm::vec3* GetRot() { return &rotation; }
inline glm::vec3* GetScale() { return &scale; }
inline void SetPos(glm::vec3& pos) { this->position = pos; }
inline void SetRot(glm::vec3& rot) { this->rotation = rot; }
inline void SetScale(glm::vec3& scale) { this->scale = scale; }


void Update();


/*inline glm::mat4 GetModelMatrix() const
{
    glm::mat4 posMat = glm::translate(position);
    glm::mat4 scaleMat = glm::scale(scale);
    glm::mat4 rotX = glm::rotate(rotation.x, glm::vec3(1.0, 0.0, 0.0));
    glm::mat4 rotY = glm::rotate(rotation.y, glm::vec3(0.0, 1.0, 0.0));
    glm::mat4 rotZ = glm::rotate(rotation.z, glm::vec3(0.0, 0.0, 1.0));
    glm::mat4 rotMat = rotX * rotY * rotZ;
    return posMat * rotMat * scaleMat; //Model Matrix
}
*/
//glm::mat4 GetMVP();



inline glm::mat4 GetMVP(Camera& camera)  //LINE A
{
    glm::mat4 posMat = glm::translate(position);
    glm::mat4 scaleMat = glm::scale(scale);
    glm::mat4 rotX = glm::rotate(rotation.x, glm::vec3(1.0, 0.0, 0.0));
    glm::mat4 rotY = glm::rotate(rotation.y, glm::vec3(0.0, 1.0, 0.0));
    glm::mat4 rotZ = glm::rotate(rotation.z, glm::vec3(0.0, 0.0, 1.0));
    glm::mat4 rotMat = rotX * rotY * rotZ;
    glm::mat4 ModelMatrix = posMat * rotMat * scaleMat;


    glm::mat4 MVP = camera.GetViewProjection()* ModelMatrix; //LINE B
    return MVP;
}



};

此代码是 Transform 类函数的一部分。

A 行和 B 行出现错误

错误：

error C2061: syntax error : identifier 'Camera'
error C2065: 'camera' : undeclared identifier
error C2228: left of '.GetViewProjection' must have class/struct/union

第三个错误是相关的（B行）

这可能是什么原因？ “必须有类/结构/联合”？

----------------------------------------------- ----------------------------------

已编辑 Camera.h

#include "OpenGL.h"
#include "Input.h"
#include "Input_Keys.h"
#include "Transform.h"

class Camera 
{
glm::mat4 projection;
glm::vec3 pos;
glm::vec3 forward;
glm::vec3 up;

//para rot vertical
glm::vec3 right;


float FOV;
float moveSpeed;
bool freeze;

float rot_horizontal;
float rot_vertical;

Input* input_handler;
Window* window_handler;
public:

Camera(bool _freeze ,float _moveSpeed , const glm::vec3& pos, float fov, float aspect, float zNear, float zFar);
~Camera(void);

void SetInputHandler(Input* _input);

void SetFreeze(bool freeze);

void Move(); //WASD
void Look(); //up down left right

void ShowData();

glm::mat4 Camera:: GetViewProjection();




};

和 GetViewProjection ...

glm::mat4 Camera:: GetViewProjection()
{
    return projection * glm::lookAt(pos, pos + forward, up);
}

----------------------------------------------- ----------------------------------

已编辑

---

好的，现在只有一个错误：

error C2061: syntax error : identifier 'Camera'

我注意到 getviewprojection() 有“Camera::”所以我删除它，并将内联函数变成非内联函数

在 Transform 类中 ...

#pragma once

#include "OpenGL.h"
#include "glm\glm.hpp"
#include "glm\gtx\transform.hpp"
#include "Camera.h"

在相机类...

#pragma once

#include "OpenGL.h"
#include "Input.h"
#include "Input_Keys.h"
#include "Transform.h"

我认为顺序应该重要..还是不重要？

Answer 1

您需要在此文件中包含包含Camera 类定义的标头。在顶部附近，您应该执行以下操作：

#include "Camera.h" // Or whatever the name of the header that contains the Camera definition is