#include <SPI.h>
#include "Ucglib.h"

Ucglib_ILI9163_18x128x128_HWSPI ucg(/*cd=*/ 5, /*cs=*/ 4, /*reset=*/ 8);

void setup(void)
{
  delay(1000);
  
  ucg.begin(UCG_FONT_MODE_SOLID);
  ucg.setRotate90();
  ucg.setScale2x2();
  
  // Fill the screen with a rainbow color
  fillRainbow();
}

int n = 0;

void loop(void)
{
  ucg.setFont(ucg_font_logisoso22_tr);
  ucg.setPrintPos(0, 30);
  
  // Set text color (e.g., red)
  ucg.setColor(255, 0, 0);  // RGB values for red
  ucg.print("arvind");

  // Draw filled circle with rainbow color and reducing radius
  drawRainbowCircle();

  delay(1000);
  n++;
}

// Function to fill the screen with a rainbow color
void fillRainbow() {
  int width = ucg.getWidth();
  int height = ucg.getHeight();
  
  for (int x = 0; x < width; x++) {
    for (int y = 0; y < height; y++) {
      float hue = map(x + y * width, 0, width * height - 1, 0, 255);
      uint8_t r, g, b;
      HsvToRgb(hue, 255, 255, r, g, b);
      
      ucg.setColor(r, g, b);
      ucg.drawBox(x, y, 1, 1);
    }
  }
}

// Function to draw a filled circle with rainbow color and reducing radius
void drawRainbowCircle() {
  int centerX = ucg.getWidth() / 2;
  int centerY = ucg.getHeight() / 2;
  int maxRadius = min(centerX, centerY);

  for (int radius = maxRadius; radius > 0; radius -= 6) {
    float hue = map(radius, 0, maxRadius, 0, 255);
    uint8_t r, g, b;
    HsvToRgb(hue, 255, 255, r, g, b);

    ucg.setColor(r, g, b);
    ucg.drawDisc(centerX, centerY, radius, UCG_DRAW_ALL);
    
    delay(100);  // Adjust delay for animation speed
  }
}

// Function to convert HSV to RGB
void HsvToRgb(float h, float s, float v, uint8_t &r, uint8_t &g, uint8_t &b) {
  int i = int(h / 60.0) % 6;
  float f = h / 60.0 - i;
  float p = v * (1.0 - s);
  float q = v * (1.0 - f * s);
  float t = v * (1.0 - (1.0 - f) * s);

  switch (i) {
    case 0: r = v * 255; g = t * 255; b = p * 255; break;
    case 1: r = q * 255; g = v * 255; b = p * 255; break;
    case 2: r = p * 255; g = v * 255; b = t * 255; break;
    case 3: r = p * 255; g = q * 255; b = v * 255; break;
    case 4: r = t * 255; g = p * 255; b = v * 255; break;
    case 5: r = v * 255; g = p * 255; b = q * 255; break;
  }
}