#include "util.hpp"

#include <cmath>
#include <cstdlib>

namespace util {
    float randf_m1_1()
    {
        return 2.0f*randf_0_1() - 1.0f;
    }

    float randf_0_1()
    {
        return static_cast<float>(static_cast<double>(rand()) / (double) RAND_MAX);
    }

    glm::vec2 randv2_m1_1()
    {
        return glm::vec2(randf_m1_1(), randf_m1_1());
    }

    glm::vec2 randv2_0_1()
    {
        return glm::vec2(randf_0_1(), randf_0_1());
    }

    float deg2rad(float deg)
    {
        return M_PI*deg/180.0;
    }

    float rad2deg(float rad)
    {
        return 180.0 * rad / M_PI;
    }
}