93 lines
2.3 KiB
Arduino
93 lines
2.3 KiB
Arduino
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#include "FastLED.h"
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#define NUM_LEDS 60
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CRGB leds[NUM_LEDS];
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#define PIN 6
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void setup()
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{
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FastLED.addLeds<WS2811, PIN, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
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}
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// *** REPLACE FROM HERE ***
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void loop() {
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BouncingBalls(0xff,0,0, 3);
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}
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void BouncingBalls(byte red, byte green, byte blue, int BallCount) {
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float Gravity = -9.81;
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int StartHeight = 1;
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float Height[BallCount];
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float ImpactVelocityStart = sqrt( -2 * Gravity * StartHeight );
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float ImpactVelocity[BallCount];
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float TimeSinceLastBounce[BallCount];
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int Position[BallCount];
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long ClockTimeSinceLastBounce[BallCount];
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float Dampening[BallCount];
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for (int i = 0 ; i < BallCount ; i++) {
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ClockTimeSinceLastBounce[i] = millis();
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Height[i] = StartHeight;
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Position[i] = 0;
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ImpactVelocity[i] = ImpactVelocityStart;
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TimeSinceLastBounce[i] = 0;
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Dampening[i] = 0.90 - float(i)/pow(BallCount,2);
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}
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while (true) {
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for (int i = 0 ; i < BallCount ; i++) {
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TimeSinceLastBounce[i] = millis() - ClockTimeSinceLastBounce[i];
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Height[i] = 0.5 * Gravity * pow( TimeSinceLastBounce[i]/1000 , 2.0 ) + ImpactVelocity[i] * TimeSinceLastBounce[i]/1000;
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if ( Height[i] < 0 ) {
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Height[i] = 0;
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ImpactVelocity[i] = Dampening[i] * ImpactVelocity[i];
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ClockTimeSinceLastBounce[i] = millis();
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if ( ImpactVelocity[i] < 0.01 ) {
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ImpactVelocity[i] = ImpactVelocityStart;
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}
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}
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Position[i] = round( Height[i] * (NUM_LEDS - 1) / StartHeight);
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}
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for (int i = 0 ; i < BallCount ; i++) {
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setPixel(Position[i],red,green,blue);
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}
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showStrip();
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setAll(0,0,0);
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}
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}
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// *** REPLACE TO HERE ***
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void showStrip() {
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#ifdef ADAFRUIT_NEOPIXEL_H
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// NeoPixel
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strip.show();
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#endif
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#ifndef ADAFRUIT_NEOPIXEL_H
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// FastLED
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FastLED.show();
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#endif
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}
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void setPixel(int Pixel, byte red, byte green, byte blue) {
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#ifdef ADAFRUIT_NEOPIXEL_H
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// NeoPixel
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strip.setPixelColor(Pixel, strip.Color(red, green, blue));
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#endif
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#ifndef ADAFRUIT_NEOPIXEL_H
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// FastLED
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leds[Pixel].r = red;
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leds[Pixel].g = green;
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leds[Pixel].b = blue;
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#endif
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}
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void setAll(byte red, byte green, byte blue) {
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for(int i = 0; i < NUM_LEDS; i++ ) {
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setPixel(i, red, green, blue);
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}
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showStrip();
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}
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