particleBuilder.cpp

ParticleBuilder & ParticleBuilder::position(const Vector2D &position)
{
    mPosition = position;
    return *this;
}

ParticleBuilder & ParticleBuilder::velocity(const Vector2D &velocity)
{
    mVelocity = velocity;
    return *this;
}

ParticleBuilder & ParticleBuilder::acceleration(const Vector2D &acceleration)
{
    mAcceleration = acceleration;
    return *this;
}

ParticleBuilder & ParticleBuilder::mass(double mass)
{
    mMass = mass;
    return *this;
}

Particle ParticleBuilder::build() const
{
    return {mMass, mAcceleration, mVelocity, mPosition};
}

std::vector<Particle> ParticleBuilder::build(size_t numberOfParticles)
{
    std::vector<Particle> particle(numberOfParticles);

    std::mt19937 mt(std::random_device{}());
    std::uniform_real_distribution real_dist(1.0, static_cast<double>(numberOfParticles));

    for(Particle &p : particle) {
        p = mass(real_dist(mt))
                .acceleration({ real_dist(mt), real_dist(mt) })
                .velocity({ real_dist(mt), real_dist(mt) })
                .position({ real_dist(mt), real_dist(mt) })
                .build();
    }

    return particle;
}