/* 
  This code was created by user Liam Frahmann. 
  This is an example of how to use the Adafruit ILI9341 Capacitive Touch. 
  Connections:
  SCL to A5
  SDA to A4
  MISO to 12
  LED to 3.3V or PWM for brightness(Not supported in WokWi)
  SCK to 13
  MOSI to 11
  D/C to 9
  RST to 8
  CS to 10
  GND to GND of power supply
  VCC to 5V
*/

#include <Adafruit_GFX.h>
#include <Adafruit_FT6206.h>
#include <Adafruit_ILI9341.h>

//Defining the pins that arn't Hardware SPI.
static byte SPI_PIN_CS = 10;
static byte PIN_DC = 9;
static byte PIN_RST = 8;

//Defining spaces for the colors so as to use a value than can be changed
static byte X_SPACE = 40;
static byte Y_SPACE = 40;

//Creating two values for adjusting the color display to look nice
uint32_t pixelColor;

int scale = 1, saver = scale;
//Creating an object called "tft" that can be called by any of the functions in the Adafruit_GFX and 
//Adafruit ILI9341 Libraries. Because the ILI9341 Cap Touch uses SPI, the hardware pins can be used 
//for better and more reliable preformance
Adafruit_ILI9341 tft = Adafruit_ILI9341(SPI_PIN_CS, PIN_DC, PIN_SPI_MOSI, PIN_SPI_SCK, PIN_RST, PIN_SPI_MISO);

//Creating an object called "ts". Because the Capacitive Touch is I2C, nothing is defined here, but 
//SDA and SCL must be properly connected or it will not work at all. 
Adafruit_FT6206 ts = Adafruit_FT6206();

void setup() {
  Serial.begin(9600);
  tft.begin(); //Initalizes the object called "tft" under the Adafruit ILI9341 Library
  tft.setRotation(2); //Conforms the tft to be at the same rotation as the Capacitive Touch
  ts.begin(); //Initalizes the object ccalled "ts" under the Adafruit FT6206 Libary in I2C 
  pixelColor = ILI9341_RED; 
  //Creating the top portion of color selection
  tft.fillRect(0,0,40,40,ILI9341_RED);
  tft.fillRect(40,0,40,40,ILI9341_GREEN);
  tft.fillRect(80,0,40,40,ILI9341_BLUE);
  tft.fillRect(120,0,40,40,ILI9341_YELLOW);
  tft.fillRect(160,0,40,40,ILI9341_MAGENTA);
  tft.fillRect(200,0,40,40,ILI9341_CYAN);
  Serial.println("Enter a scale to get bigger dots!");
}

void loop() {
  if(Serial.available()){ 
    scale = Serial.parseInt();
    if(scale == 0)scale = saver;else saver = scale;
    Serial.print(scale); 
    Serial.println(""); 
    Serial.flush();
    scale = 100 - scale + 1;
  }
  TS_Point p; // Creates an object called "p" that contains the data for the points touched on the TFT
  if(ts.touched()){
    p = ts.getPoint();
    if(p.y > Y_SPACE)tft.fillCircle(p.x,p.y,scale,pixelColor);
    /*Here, this loop is to check the values for each of the colors if they've been touched */
    for(byte x = 0; x < 6; x++){
      //Checking to see if the ts reports a touch within the x and y corodinites of the other colors 
      //acording to the byte x.
      if(p.x >= x * X_SPACE && p.x <= (x + 1) * X_SPACE && p.y <= Y_SPACE){
        switch(x){
          case 0: pixelColor = ILI9341_RED; break;
          case 1: pixelColor = ILI9341_GREEN; break;
          case 2: pixelColor = ILI9341_BLUE;  break;
          case 3: pixelColor = ILI9341_YELLOW;  break;
          case 4: pixelColor = ILI9341_MAGENTA;  break;
          case 5: pixelColor = ILI9341_CYAN;  break;
        }
      }
    }
  }
}