/***************************************************
The code showcases basic graphics animations on the 
TFT display with a variety of colors. The animations
 include a moving square, a rising circle, and a 
 diagonal-traveling triangle. The loop repeats these
  animations with different 
colors.
by arvind patil


15/12/23
********************************************/


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

#define TFT_RST  8 // Reset pin (change to your wiring)
#define TFT_DC   9 // Data/Command pin (change to your wiring)
#define TFT_CS   10 // Chip Select pin (change to your wiring)
#define TFT_LED  7  // Backlight LED pin (change to your wiring)

// Create an instance of the ILI9341 TFT display
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

// Define some rainbow colors
#define TFT_RED 0xF800
#define TFT_ORANGE 0xFD20
#define TFT_YELLOW 0xFFE0
#define TFT_GREEN 0x07E0
#define TFT_BLUE 0x001F
#define TFT_INDIGO 0x4810
#define TFT_VIOLET 0x780F

// Function to clear the screen
void clearScreen() {
    tft.fillScreen(ILI9341_BLACK);
}

// Function to draw the first animation
void animate1(uint16_t color) {
    int x = 0; // x-coordinate of the square
    int y = 100; // y-coordinate of the square
    int size = 50; // size of the square
    int xSpeed = 3; // horizontal speed of the square

    while (x < tft.width()) {
        tft.fillRect(x, y, size, size, color);
        delay(50); // Small delay to control the animation speed
        tft.fillRect(x, y, size, size, ILI9341_BLACK); // Clear the previous square
        x += xSpeed;
    }
}

// Function to draw the second animation
void animate2(uint16_t color) {
    int x = 100; // x-coordinate of the circle
    int y = 0; // y-coordinate of the circle
    int radius = 25; // radius of the circle
    int ySpeed = 1; // vertical speed of the circle

    while (y < tft.height()) {
        tft.fillCircle(x, y, radius, color);
        delay(20); // Small delay to control the animation speed
        tft.fillCircle(x, y, radius, ILI9341_BLACK); // Clear the previous circle
        y += ySpeed;
    }
}

// Function to draw the third animation
void animate3(uint16_t color) {
    int x = 0; // x-coordinate of the triangle
    int y = 0; // y-coordinate of the triangle
    int size = 40; // size of the triangle
    int xSpeed = 1; // horizontal speed of the triangle
    int ySpeed = 1; // vertical speed of the triangle

    while (x < tft.width() - size && y < tft.height() - size) {
        tft.fillTriangle(x, y, x + size, y, x + size / 2, y + size, color);
        delay(20); // Small delay to control the animation speed
        tft.fillTriangle(x, y, x + size, y, x + size / 2, y + size, ILI9341_BLACK); // Clear the previous triangle
        x += xSpeed;
        y += ySpeed;
    }
}

void setup() {
    // Initialize the display
    tft.begin();
    // Set the backlight brightness
    analogWrite(TFT_LED, 128);
    // Clear the screen
    clearScreen();
}

void loop() {
    // Draw the first animation with red color
    animate1(TFT_RED);
    // Draw the second animation with orange color
    animate2(TFT_ORANGE);
    // Draw the third animation with yellow color
    animate3(TFT_YELLOW);
    // Repeat the animations with the other rainbow colors
    animate1(TFT_GREEN);
    animate2(TFT_BLUE);
    animate3(TFT_INDIGO);
    animate1(TFT_VIOLET);
}