#include "o3d/mesh.h"
#include <vector>
#include <array>
#include <cstddef>
#include "math/vector.h"

using namespace engine::o3d;

// Mesh Mesh::cube() {
//     return {
//         {
//             { engine::math::Vector3(-1.f, -1.f, -1.f), {} },
//             { engine::math::Vector3(+1.f, -1.f, -1.f), {} },
//             { engine::math::Vector3(-1.f, +1.f, -1.f), {} },
//             { engine::math::Vector3(+1.f, +1.f, -1.f), {} },
//             { engine::math::Vector3(-1.f, -1.f, +1.f), {} },
//             { engine::math::Vector3(+1.f, -1.f, +1.f), {} },
//             { engine::math::Vector3(-1.f, +1.f, +1.f), {} },
//             { engine::math::Vector3(+1.f, +1.f, +1.f), {} },
//         },
//         {
//             { 0, 2, 3 }, { 0, 3, 1 }, // face 1
//             { 0, 4, 6 }, { 0, 6, 2 }, // face 2
//             { 0, 1, 5 }, { 0, 5, 4 }, // face 3
//             { 7, 6, 4 }, { 7, 4, 5 }, // face 4
//             { 7, 3, 2 }, { 7, 2, 6 }, // face 5
//             { 7, 5, 1 }, { 7, 1, 3 }, // face 6
//         }
//     };
// }

Mesh Mesh::plane() {
    return {
        {
            {-1.f, 0.f, -1.f, 1.f},
            {+1.f, 0.f, -1.f, 1.f},
            {+1.f, 0.f, +1.f, 1.f},
            {-1.f, 0.f, +1.f, 1.f},
        },
        { {0.f, 0.f, -1.f} },
        {
            {0.f, 0.f},
            {1.f, 0.f},
            {1.f, 1.f},
            {0.f, 1.f},
        },
        {
            {{ {{0, 0, 0}}, {{1, 0, 1}}, {{2, 0, 2}} }},
            {{ {{2, 0, 2}}, {{3, 0, 3}}, {{0, 0, 0}} }},
            {{ {{0, 0, 0}}, {{3, 0, 3}}, {{2, 0, 2}} }},
            {{ {{2, 0, 2}}, {{1, 0, 1}}, {{0, 0, 0}} }},
        }
    };
}

Mesh::Mesh(std::vector<engine::math::Vector4> vertices,
    std::vector<engine::math::Vector3> normals,
    std::vector<VertexData> vertices_data,
    std::vector<std::array<std::array<std::size_t, 3>, 3>> indices)
    : vertices{vertices}, normals{normals}, vertices_data{vertices_data}, indices{indices} {
}