pixled/random/normal.cpp

A pixled::random::NormalDistribution usage example.

random_normal_t.gif	random_normal_xy_t.gif	random_normal_xy_t_hue.gif

#include "pixled.h"
#include "pixled/gif_output.h"
 
 
int main(int argc, char** argv) {
    pixled::LedPanel panel(16, 16, pixled::LEFT_RIGHT_RIGHT_LEFT_FROM_BOTTOM);
    pixled::GifOutput out(256, pixled::FIT_WIDTH, 20, panel);
 
    {
        // Random engine that only depends upon time.
        // The value will be the same for every leds, and will change every 10
        // frames.
        pixled::RandomT random_engine(10);
        // Normal integer distribution centered on 200 with a variation of 20
        pixled::NormalDistribution<std::uint8_t> random_red(200, 20, random_engine);
 
        // Animation
        pixled::rgb color(random_red, 50, 50);
 
        pixled::Runtime runtime(panel, out, color);
        // Writes 100 frames to gif file
        out.write(runtime, 100, "random_normal_t.gif");
    }
    {
        // Random engine that only depends upon time and space.
        // The value will be different for every leds, and will change every 10
        // frames.
        pixled::RandomXYT random_engine(10);
        // Normal integer distribution centered on 200 with a variation of 20
        // (same as above)
        pixled::NormalDistribution<std::uint8_t> random_red(200, 20, random_engine);
 
        // Animation
        pixled::rgb color(random_red, 50, 50);
 
        pixled::Runtime runtime(panel, out, color);
        // Writes 100 frames to gif file
        out.write(runtime, 100, "random_normal_xy_t.gif");
    }
    {
        // Same as above
        pixled::RandomXYT random_engine(10);
        // A random hue with values distributed according to a normal
        // distribution
        pixled::NormalDistribution<float> random_hue(
                // The center of the normal distribution varies from 0 to 360
                pixled::Rainbow(50),
                // Variation
                20,
                // Random engine
                random_engine
                );
 
        // Animation
        pixled::hsb color(random_hue, 1.0, 1.0);
 
        pixled::Runtime runtime(panel, out, color);
        // Writes 100 frames to gif file
        out.write(runtime, 100, "random_normal_xy_t_hue.gif");
    }
}