类类型重定义和未定义类型的使用

Question

这个错误“'形状'：'类'类型重定义”和“使用未定义类型'形状'”是什么？ 我的shape类和main方法如下所示，shape（int si）构造函数可供我测试节点的遍历，尽管这与错误无关。任何帮助将不胜感激。

的main.cpp

#include "mat3.h"
#include "node.h"
#include "shape.h"
#include "vec3.h"

int main(int argc, char *argv[])
{
    Node root = Node(shape(0));                     //torso
    Node head = *root.addChild(shape(1));           //head
    Node larm = *root.addChild(shape(2));           //left arm
    Node rarm = *root.addChild(shape(3));           //right arm
    Node lleg = *root.addChild(shape(4));           //left leg
    Node rleg = *root.addChild(shape(5));           //right leg

    Node lwing = *larm.addChild(shape(6));          //left wing
    Node rwing = *rarm.addChild(shape(7));          //right wing
    Node lhand = *larm.addChild(shape(8));          //left hand
    Node rhand = *rarm.addChild(shape(9));          //right hand

    Node lfoot = *lleg.addChild(shape(10));         //left foot
    Node rfoot = *rleg.addChild(shape(11));         //right foot
}

shape.h

#include <string>
#include <list>
#include "vec3.h"


class shape {
private:
    vec3 collor;
    std::list<vec3> points;

public:
    int s;
    shape();
    shape(int si);
    shape(vec3 collor, std::list<vec3>& points);
    vec3 getCollor();
    std::list<vec3>* getPoints();
    void setCollor(vec3 collor_i);
    void setPoints(std::list<vec3>& points_i);
};

shape.cpp

#include <string>
#include <list>
#include "vec3.h"
#include "shape.h"
#include <assert.h>


shape::shape() {
    collor = vec3();
}
shape::shape(int si) {
    s = si;
}
shape::shape(vec3 collor_i, std::list<vec3>& points_i) {
    assert(collor_i[0] >= 0 && collor_i[1] >= 0 && collor_i[2] >= 0);
    assert(collor_i[0] <= 1 && collor_i[1] <= 1 && collor_i[2] <= 1);
    collor = collor_i;
    points = points_i;
}
vec3 shape::getCollor() {
    return collor;
}
std::list<vec3>* shape::getPoints() {
    return &points;
}
void shape::setCollor(vec3 collor_i) {
    collor = collor_i;
}
void shape::setPoints(std::list<vec3>& points_i) {
    points = points_i;
};