pixled::signal::Square Class Reference

#include <signal.h>

Inheritance diagram for pixled::signal::Square:

Collaboration diagram for pixled::signal::Square:

Public Member Functions
float	operator() (led l, time t) const override
Public Member Functions inherited from pixled::Function< Square, float, float >
	Function (Fcts &&... fcts)
const base::Function< typename std::tuple_element< i, decltype(args)>::type::Type > &	arg () const
std::tuple_element< i, decltype(args)>::type::Type	call (led l, time t) const

Additional Inherited Members
Public Types inherited from pixled::Function< Square, float, float >
using	Type = typename base::Function< float >::Type
Public Types inherited from pixled::base::Function< R >
typedef R	Type
Protected Member Functions inherited from pixled::Function< Square, float, float >
base::Function< float > *	copy () const override
Protected Attributes inherited from pixled::Function< Square, float, float >
std::tuple< const FctWrapper< Args >... >	args

Detailed Description

Square wave function.

Values returned are contained in [-1, 1].

+ and * operators can be used to modulate the Square wave as required. For example, to obtain values in [0, 16]:

8.f * (1.f + Square(...))

More generally, to obtain values centered around a, with an amplitude of b, i.e. in [a-b, a+b], so the total variation is 2*b, use the following formula:

a + (b * Square(...))

Differrent type of waves can be defined as for the Sine function.

Parameters

float

square function parameter

Return values

float

sin(2*PI * this->call<0>(p, t)) > 0 ? 1 : -1

Examples

pixled/signal/square.cpp.

Member Function Documentation

operator()()

float pixled::signal::Square::operator() ( led  l, time  t  ) const

overridevirtual

Computes the value of this Function for led l at time t.

Parameters

l	led
t	time

Returns

Result of this Function, evaluated on led l at time t. Notice that evaluating a function usually requires the recursive evaluation of other Functions (that are actually parameters of this function) until a Constant is reached for example.

Implements pixled::base::Function< R >.

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The documentation for this class was generated from the following files:

• src/pixled/signal/signal.h
• src/pixled/signal/signal.cpp