#include <psemek/audio/wave/triangle.hpp>
#include <psemek/audio/wave/generator.hpp>
#include <psemek/geom/math.hpp>
#include <psemek/util/to_shared.hpp>

#include <cmath>

namespace psemek::audio
{

	stream_ptr triangle_wave(float frequency)
	{
		auto func = [frequency](float t){
			t *= frequency;
			return 4.f * std::abs(t - std::floor(t + 0.5f)) - 1.f;
		};

		return util::to_shared(generator_stream(func));
	}

}