(structname/classname) 不命名类型 C++

Question

I have an issue with my structs and classes not having a "type" My code looks like this, I will show for one error:

This my struct "intersection" declared under my "Vector" class in vector.h:

struct Intersection {
bool hasIntersection;
Shape *pShape;
float t;
Color color;

Intersection emptyIntersection();};

Then this is my include in Shape.cpp where I have a subclass structure with different shapes:

#include "../include/Shape.h"

This is one of the functions:

Intersection Sphere::intersect(const Ray &ray) {
// Sphere naar nul zetten
Ray localray = ray;
localray.origin -= centre;
Intersection localintersection{};

float a = localray.direction.length2();
float b = 2 * localray.direction.dot(localray.origin);
float c = localray.origin.length2() - sqr(radius);

float D = sqr(b) - 4 * a * c;

if (D < 0.0f){
    return localintersection.emptyIntersection();
}

float t1 = (-b - std::sqrt(D)) / (2 * a);
float t2 = (-b + std::sqrt(D)) / (2 * a);

if (t1 > RAY_T_MIN && t1 < RAY_T_MAX) {
    localintersection.hasIntersection = true;
    localintersection.pShape = this;
    localintersection.color = color;
    localintersection.t = t1;
}
else if(t2 > RAY_T_MIN && t2 < RAY_T_MAX) {
    localintersection.t = t2;
}
else{
    return localintersection.emptyIntersection();
}}

And this is the top part of my Shape class in Shape.h

virtual Intersection intersect(const Ray& ray) = 0;

It is giving me the errors that 'Shape' does not name a type for my struct, and Intersection does not name a type for my Shape.h class. I do not know how to solve it, I have seen many other topics which have solutions, but none of these work

EDIT:

declaration of Shape and a subclass

class Shape {
public:

    virtual Intersection intersect(const Ray& ray) = 0;
};

class Shapeset : public Shape{
protected:
    std::vector<Shape*> shapes;

public:
    Shapeset();

    void addShape (Shape* shape);

    virtual Intersection intersect(const Ray& ray);
};

Answer 1

Your header with Intersection declaration doesn't have Shape declaration.

Use code:

class Shape;

struct Intersection { ...

There is same trouble with Shape header: header doesn't have Intersection declaration. I recommend you to include intersection header into shape header.