#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <SPI.h>
#include <math.h>

#define TFT_DC 2
#define TFT_CS 15
#define TFT_WIDTH 320
#define TFT_HEIGHT 240

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

void setup() {
  tft.begin();
  tft.setRotation(1);
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
}

void loop() {
  while (true) {
    drawCombinedSignals();
    delay(100);
    tft.fillRect(0, 0, tft.width(), tft.height(), ILI9341_BLACK);
  }
}

void drawCombinedSignals() {
  int startX = 0; // Position de départ de la courbe

  while (startX < TFT_WIDTH) {
    tft.fillScreen(ILI9341_BLACK); // Effacer l'écran après chaque itération

    int x = startX;
    for (; x < TFT_WIDTH - 1; x++) {
      float y1 = calculateCombinedSignal(x);
      float y2 = calculateCombinedSignal(x + 1);
      tft.drawLine(x, y1, x + 1, y2, ILI9341_YELLOW);}

      

     
}}

float calculateCombinedSignal(float x) {
  float s2 = 0;
  int offset = 1;

  while (true) { // Boucle infinie
  float y1 = -(3.5/ 0.25) * exp(-pow((x - 15-offset), 2) / pow(4, 2));
  float y2 = (7) * exp(-pow((x - 20-offset), 2) / pow(8, 2));
  float y3 = -(2) * exp(-pow((x -20.2-offset), 2) / pow(6, 2));
  s2+=y1+y2+y3; offset += 100;

    // Sortir de la boucle si nécessaire
    if (offset > 1000) {
      break; // Sortir de la boucle infinie lorsque offset dépasse 900
    }
  }
 return 0.4 *s2* 10 + TFT_HEIGHT / 2; // Scale and shift the result for display
}