21 lines
421 B
C++
21 lines
421 B
C++
#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));
|
|
}
|
|
|
|
}
|