Spinning Arrow rev_01

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    - Project: Spinning Arrow
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-10-12 00:32:16

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Draw an animation like a spinning arrow */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <Adafruit_SSD1306.h>    // https://github.com/stblassitude/Adafruit_SSD1306_Wemos_OLED.git
#include <U8g2_for_Adafruit_GFX.h> // https://github.com/olikraus/U8g2_for_Adafruit_GFX

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void drawArrow(int16_t x, int16_t y, int16_t angle); // Function to draw the arrow

/***** DEFINITION OF I2C PINS *****/
const uint8_t ga_SSD1306OledDisplay_I2C_PIN_SDA_A4      = A4;
const uint8_t ga_SSD1306OledDisplay_I2C_PIN_SCL_A5      = A5;
const uint8_t ga_SSD1306OledDisplay_I2C_SLAVE_ADDRESS    = 60;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Create an instance of the display with the reset pin
Adafruit_SSD1306 display(ga_SSD1306OledDisplay_I2C_PIN_SDA_A4, ga_SSD1306OledDisplay_I2C_PIN_SCL_A5, -1, -1, ga_SSD1306OledDisplay_I2C_SLAVE_ADDRESS);
// Initialize U8g2_for_Adafruit_GFX with the display instance
U8G2_FOR_ADAFRUIT_GFX u8g2_for_adafruit_gfx; // Instance for U8g2 support

void setup(void)
{
    // Initialize the display
    display.begin(SSD1306_SWITCHCAPVCC, ga_SSD1306OledDisplay_I2C_SLAVE_ADDRESS); // Initialize with I2C address
    u8g2_for_adafruit_gfx.begin(display); // Connect U8g2 to Adafruit GFX

    // Clear the display buffer
    display.clearDisplay();
    display.display(); // Make the buffer visible
}

void loop(void)
{
    // Animation loop for spinning arrow
    for (int angle = 0; angle < 360; angle += 10) { // Increment angle for animation
        display.clearDisplay(); // Clear the display buffer
        drawArrow(display.width() / 2, display.height() / 2, angle); // Draw the arrow at the center
        display.display(); // Update the display
        delay(100); // Delay for animation effect
    }
}

// Function to draw an arrow at a given angle
void drawArrow(int16_t x, int16_t y, int16_t angle) {
    // Calculate the arrow points based on the angle
    int16_t arrowLength = 20; // Length of the arrow
    int16_t arrowWidth = 5;   // Width of the arrow head

    // Calculate the end point of the arrow
    int16_t endX = x + arrowLength * cos(radians(angle));
    int16_t endY = y + arrowLength * sin(radians(angle));

    // Draw the arrow shaft
    display.drawLine(x, y, endX, endY, WHITE); // Draw line from center to end point

    // Draw the arrow head
    display.drawLine(endX, endY, endX - arrowWidth * cos(radians(angle - 45)), endY - arrowWidth * sin(radians(angle - 45)), WHITE); // Left head
    display.drawLine(endX, endY, endX - arrowWidth * cos(radians(angle + 45)), endY - arrowWidth * sin(radians(angle + 45)), WHITE); // Right head
}

/* END CODE */