r_geom.h

#ifndef R_GEOM_HDR
#define R_GEOM_HDR
#include "r_common.h"
#include "u_pair.h"

namespace m {

struct vec3;

}

namespace r {

struct geom {
    geom();
    ~geom();
    void upload(bool index = true);

    union {
        struct {
            GLuint vbo;
            GLuint ibo;
        };
        GLuint buffers[2];
    };
    GLuint vao;
};

struct quad : geom {
    bool upload();
    void render();
};

struct sphere : geom {
    sphere();
    bool upload();
    void render();

private:
    size_t m_indices;
    static constexpr size_t kSlices = 8;
    static constexpr size_t kStacks = 4;
};

struct bbox : geom {
    bool upload();
    void render();
};

struct cone : geom {
    bool upload();
    void render(bool bottom = true);
private:
    u::pair<size_t, size_t> m_indices;
    static constexpr int kSlices = 8;
};

}

#endif