GAMES101作业1-VS2019

Eigen::Matrix4f get_model_matrix(float rotation_angle)
{
    Eigen::Matrix4f model = Eigen::Matrix4f::Identity();
    Eigen::Matrix4f rot; //构建旋转矩阵
    float angle = rotation_angle / 180 * M_PI;
    rot 正交 perspective->orthographic
    Eigen::Matrix4f pertoorth;
    pertoorth {2, 0, -2}, {0, 2, -2}, {-2, 0, -2}};

    std::vector{0, 1, 2}};

    auto pos_id = r.load_positions(pos);
    auto ind_id = r.load_indices(ind);

    int key = 0;
    int frame_count = 0;

    if (command_line) {
        r.clear(rst::Buffers::Color | rst::Buffers::Depth);

        r.set_model(get_model_matrix(angle));
        r.set_view(get_view_matrix(eye_pos));
        r.set_projection(get_projection_matrix(45, 1, 0.1, 50));
        r.set_rodrigues(get_rotation(raxis, rangle));

        r.draw(pos_id, ind_id, rst::Primitive::Triangle);
        cv::Mat image(700, 700, CV_32FC3, r.frame_buffer().data());
        image.convertTo(image, CV_8UC3, 1.0f);

        cv::imwrite(filename, image);

        return 0;
    }

    bool rflag = false;

    std::cout