RGB Lights Effect in Flutter

Dynamically generates RGB light effects in Flutter.

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How does it work

The mechanism is very simple. Like digital signage, we prepare several dots and map a color to each dot.

HSVColor is used to generate effects. It has the property that colors can be represented using 360 degrees from 0, which works very well with gradients. (I also use it in my holographic UI)

For example, with just this code, you can create an animation with a color gradient transition. Actually, I could have used ColorTween, but the performance was not good, so I simply used Stream and counter. (This could be rewritten.)

... // Increment 'hue' with a counter.

ColoredBox(color: HSVColor.fromAHSV(1.0, hue % 360, 1.0, 1.0).toColor());

Interestingly, one can generate a variety of geometric patterns simply by scaling the hue that creates the wave.

ColorMap _linerWaveColorMap(int count, double scale) => {
      for (var i = 0; i < _columnLength * _rowLength; i++)
        i: _colorFromHue(count + i * scale)
    };

In this project, Liner Wave and Circluler Wave are provided as samples, but the number of effects can be infinitely increased. Please experiment with them yourself. To aid understanding, I have combined all classes into one file and have not made any performance adjustments. Please make changes accordingly.