gigawidgets/rainbow__cycle_8hpp_source.html

#pragma once


#include "../../core/color.hpp"

#include "../../core/coords.hpp"

#include "../../core/size.hpp"


namespace ui::shader {


template <unsigned int frequency>


color_t rainbow_cycle(color_t pixel, const Coords &coords, const Size &size, time_t time) {

    int h;

    float s, v;

    hsvComponents(pixel, h, s, v);


    h += time * 360 / frequency;


    return hsv(h, s, v);

}


} // namespace ui::shader

ui::hsv
color_t hsv(const int hue, const float saturation, const float value)
Convert HSV color components into an RGB565 value.

ui::color_t
uint16_t color_t
An RGB565 color value. 5 bits red, 6 bits green, 5 bits blue.
Definition color.hpp:13

ui::hsvComponents
void hsvComponents(color_t color, int &hue, float &saturation, float &value)
Convert an RGB565 value into HSV color components.

ui::shader::rainbow_cycle
color_t rainbow_cycle(color_t pixel, const Coords &coords, const Size &size, time_t time)
A pixel shader that smoothly rotates the original color's hue through the rainbow.
Definition rainbow_cycle.hpp:19

ui::Coords
A struct for storing the pixel coordinates of various UI elements.
Definition coords.hpp:17

ui::Size
A struct that holds the number of pixels that a widget would take up on the screen.
Definition size.hpp:17