#include "Adafruit_ILI9341.h"

// ESP32-WROOM
#define TFT_CS        5
#define TFT_RST       4 
#define TFT_DC        2

// Farben
#define SCHWARZ     0x0000
#define WEISS       0xFFFF
#define BLAU        0x001F
#define ROT         0xF800
#define GRUEN       0x07E0
#define CYAN        0x07FF
#define MAGENTA     0xF81F
#define GELB        0xFFE0
#define BRAUN       0x9A60
#define GRAU        0x7BEF
#define GRUENGELB   0xB7E0
#define DUNKELCYAN  0x03EF
#define ORANGE      0xFDA0
#define PINK        0xFE19
#define BORDEAUX    0xA000
#define HELLBLAU    0x867D
#define VIOLETT     0x915C
#define SILBER      0xC618
#define GOLD        0xFEA0

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

void setup()
{
  // Zufallsgenerator starten
  randomSeed(analogRead(A0));
  Serial.begin(9600);
  delay(500);
  Serial.println("Bildschirm: " + String(tft.height()) + " x " + String(tft.width()));

  // TFT starten
  tft.begin();

  // Rotation anpassen
  tft.setRotation(0);

  // schwarzer Hintergrund
  tft.fillScreen(SCHWARZ);
}

void loop()
{
  // interne Textdarstellung
  tft.setTextSize(1);
  tft.setCursor(1, 5);
  tft.setTextColor(BLAU);
  tft.print("Text");
  delay(500);

  tft.setTextSize(3);
  tft.setCursor(1, 40);
  tft.setTextColor(GRUEN);
  tft.print("Text");
  delay(500);

  tft.setTextSize(5);
  tft.setCursor(1, 70);
  tft.setTextColor(ROT);
  tft.print("Text");
  delay(500);

  tft.setTextSize(7);
  tft.setCursor(1, 120);
  tft.setTextColor(GELB);
  tft.print("Text");
  delay(500);

  tft.setTextSize(9);
  tft.setCursor(1, 200);
  tft.setTextColor(GRAU);
  tft.print("Text");
  delay(2000);

  // Sonderzeichen darstellen
  tft.fillScreen(SCHWARZ);
  tft.setTextColor(WEISS);
  tft.setCursor(10, 20);
  tft.setTextSize(3);

  // Großstädte
  tft.println();
  tft.print("Gro");
  tft.write(0xe);
  tft.print("st");
  tft.write(0x84);
  tft.print("dte");

  // Düsseldorf
  tft.println();
  tft.print("D");
  tft.write(0x81);
  tft.print("sseldorf");

  // Köln
  tft.println();
  tft.print("K");
  tft.write(0x94);
  tft.println("ln");
  tft.println();
  tft.println("Temperatur:");
  tft.print("20");
  tft.write(0xf7);
  tft.print("C"); 
  delay(2000);

  // zufällige Pixel
  tft.fillScreen(SCHWARZ);
  for  (int i = 0; i < 700; i++)
  {
    int PixelX = random(1, tft.width());
    int PixelY = random(1, tft.height());
    tft.drawPixel(PixelX, PixelY, tft.color565(random(255),random(255),random(255)));
    delay(5);
  }
  delay(2000);

  // Linien ziehen
  tft.fillScreen(SCHWARZ);
  for (int i = 1; i < tft.height(); i+=10)
  {
    tft.drawLine(1, i, tft.width(), i, ORANGE);
  }
  delay(2000);

  // Kreise vom Mittelpunkt zeichnen
  tft.fillScreen(SCHWARZ);
  for (int i = 1; i < tft.width() / 2; i+=10)
  {
    tft.fillCircle(tft.width() / 2, tft.height() / 2, tft.width() / 2 - i, tft.color565(random(255),random(255),random(255)));
    delay(50);
  }
  delay(2000);

  // Rechtecke zeichnen
  tft.fillScreen(SCHWARZ);
  for (int i = 1; i < tft.width(); i+=10)
  {
    tft.drawRect(tft.width() / 2 - i / 2, tft.height() / 2 - i / 2 , i, i, tft.color565(random(255),random(255),random(255)));
  }
  delay(2000);

   // ausgefüllte Rechtecke zeichnen
  tft.fillScreen(SCHWARZ);
  for (int i = 1; i < tft.width() / 2; i+=10)
  {
    tft.fillRect(i, i, i, i, tft.color565(random(255),random(255),random(255)));
    delay(50);
  }
  delay(2000);

  // Dreiecke
  tft.fillScreen(SCHWARZ);
  for (int i = 1; i <tft.width(); i+=10)
  {
    tft.fillTriangle(i, i, 100, 100, 1, tft.width(), tft.color565(random(255),random(255),random(255)));
    delay(50);
  }   
  delay(2000);
  tft.fillScreen(SCHWARZ);
}