#include <Adafruit_NeoPixel.h>
#define Button 2

#define Count 24
Adafruit_NeoPixel strip = Adafruit_NeoPixel(Count, 1, NEO_GRB + NEO_KHZ800);

bool oldState = HIGH;
int showType = 0;
int X = 50;              //colorwipe speed
int Y = 20;              // Rainbow speed

int PotVal;
int PotOut;

void setup() {
  
  pinMode(Button,INPUT);
  pinMode(0,OUTPUT);
   strip.begin();
   strip.show();
}

void loop() {
  
  bool newState = digitalRead(Button);
  if (newState == LOW && oldState == HIGH) {
      delay(20);
    newState = digitalRead(Button);
    if (newState == LOW) {
      showType++;
      if (showType > 9)
        showType=0;
      startShow(showType);
  PotVal = analogRead(3);
  PotOut = map (PotVal, 0, 1023, 0, 255);
   strip.setBrightness(PotOut); 
      
    }
  }

     oldState = newState;
}

void startShow(int i) {
  
  switch(i){
    case 0: colorWipe(strip.Color(0, 0, 0), X);    // Black/off
            break;
    case 1: colorWipe(strip.Color(255, 0, 0), X);  // Red
            break;
    case 2: colorWipe(strip.Color(0, 255, 0), X);  // Green
            break;
    case 3: colorWipe(strip.Color(0, 0, 255), X);  // Blue
            break;
    case 4: colorWipe(strip.Color(255, 0, 255), X);  // Blue
            break;
    case 5: colorWipe(strip.Color(0, 255, 255), X);  // Blue
            break;
    case 6: colorWipe(strip.Color(255, 255, 0), X);  // Blue
            break;
    case 7: rainbow(Y);
            break;
    case 8: rainbowCycle(Y);
            break;
 
  }
}

void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}

void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);

  PotVal = analogRead(3);
  PotOut = map (PotVal, 0, 1023, 0, 255);
   strip.setBrightness(PotOut); 
  }
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);

  PotVal = analogRead(3);
  PotOut = map (PotVal, 0, 1023, 0, 255);
   strip.setBrightness(PotOut); 
    
  }
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}