83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
#pragma once
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#include <cstdint>
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#include <vector>
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class Fader
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{
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public:
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struct Color {
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int16_t r, g, b, w;
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Color(int16_t ir = 0, int16_t ig = 0, int16_t ib = 0, int16_t iw = 0) : r(ir), g(ig), b(ib), w(iw) {}
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void operator += (const Color &color)
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{
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this->r += color.r;
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this->g += color.g;
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this->b += color.b;
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this->w += color.w;
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}
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void normalize(void)
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{
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if(r > 255) { r = 255; } else if (r < 0) { r = 0; };
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if(g > 255) { g = 255; } else if (g < 0) { g = 0; };
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if(b > 255) { b = 255; } else if (b < 0) { b = 0; };
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if(w > 255) { w = 255; } else if (w < 0) { w = 0; };
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}
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void gamma_correct(void)
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{
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r = r * r / 255;
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g = g * g / 255;
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b = b * b / 255;
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w = w * w / 255;
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}
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};
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Fader(std::size_t nstrips, std::size_t nmodules_per_strip);
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void set_color(uint32_t strip, uint32_t module, const Color &color);
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void fade_color(uint32_t strip, uint32_t module, const Color &color);
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void add_color(uint32_t strip, uint32_t module, const Color &color);
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void set_color(const Color &color); // for all LEDs
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void fade_color(const Color &color); // for all LEDs
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void add_color(const Color &color); // for all LEDs
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void set_fadestep(uint8_t newFadestep);
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void update(void);
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/*!
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* \returns Whether any color value has changed since the last call to getColorValues().
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*/
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bool something_changed(void) const {return !m_commands.empty(); };
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std::size_t modules_per_strip(void) { return m_modulesPerStrip; }
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std::size_t strips(void) { return m_strips; }
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private:
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enum Action {
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SET_COLOUR = 0,
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FADE_COLOUR = 1,
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ADD_COLOUR = 2,
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SET_FADESTEP = 3
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};
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struct Command {
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enum Action action;
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uint8_t strip;
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uint8_t module;
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Color color;
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};
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int m_fd;
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std::size_t m_strips;
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std::size_t m_modulesPerStrip;
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std::vector<Command> m_commands;
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};
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