rand_float.hpp

#pragma once
#include <ossia/dataflow/graph_node.hpp>
#include <ossia/dataflow/port.hpp>
 
#include <random>
 
namespace ossia::nodes
{
struct rand_float final : public ossia::nonowning_graph_node
{
  ossia::value_outlet value_out;
 
public:
  std::uniform_real_distribution<float> dist;
  rand_float(float min, float max)
      : dist{min, max}
  {
    m_outlets.push_back(&value_out);
  }
 
  std::string label() const noexcept override { return "rand_float"; }
  void run(const ossia::token_request& t, ossia::exec_state_facade e) noexcept override
  {
    auto& out = *value_out.target<ossia::value_port>();
    auto tm = e.timings(t);
#if defined(OSSIA_FREESTANDING)
    out.write_value((rand() - dist.a()) / (dist.b() - dist.a()), tm.start_sample);
#else
    thread_local std::mt19937 gen;
    out.write_value(dist(gen), tm.start_sample);
#endif
  }
};
}