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

#define TFT_CS 10
#define TFT_DC 9
#define TFT_RST -1  // RST can be left unconnected

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

void setup() {
  Serial.begin(115200);

  tft.begin();
  tft.setRotation(3);  // Adjust the rotation if needed

  tft.fillScreen(ILI9341_BLACK);  // Fill the screen with black color
}

void loop() {
  // Display color square grid and triangles
  displayColorSquareGrid();
  delay(2000);  // Pause for 2 seconds
  tft.fillScreen(ILI9341_BLACK);  // Clear the screen

  displayColorTriangles();
  delay(2000);  // Pause for 2 seconds
  tft.fillScreen(ILI9341_BLACK);  // Clear the screen
}

void displayColorSquareGrid() {
  int side = 150;  // Initial side length of the square
  int spacing = 10;  // Spacing between squares

  for (int i = 0; i < 10; ++i) {
    uint16_t color = tft.color565(i * 20, i * 10, 255 - i * 15);  // Generate a gradient color
    tft.fillRect(10 + i * spacing, 10 + i * spacing, side, side, color);
    side -= 5;  // Reduce side length by 5 pixels for the next square
  }
}

void displayColorTriangles() {
  int side = 150;  // Initial side length of the triangle
  int spacing = 10;  // Spacing between triangles

  for (int i = 0; i < 10; ++i) {
    uint16_t color = tft.color565(i * 20, 255 - i * 10, i * 15);  // Generate a gradient color
    int x0 = 80 + i * spacing;
    int y0 = 30 + i * spacing;
    int x1 = 140 + i * spacing;
    int y1 = 70 + i * spacing;
    int x2 = 40 + i * spacing;
    int y2 = 70 + i * spacing;
    tft.fillTriangle(x0, y0, x1, y1, x2, y2, color);
    side -= 5;  // Reduce side length by 5 pixels for the next triangle
  }
}