/* ESP32 Screen Circular Progress

  Displays a circle in "orbit" around the center of the screen
*/

#include <TFT_eSPI.h>
#include <SPI.h>       // this is needed for display


// The display also uses hardware SPI, plus #9 & #10
#define TFT_CS 15
#define TFT_DC 2
#define TFT_MOSI 23
#define TFT_SCLK 18


TFT_eSPI tft = TFT_eSPI(); // Invoke custom library with default width and height
// TFT_eSprite img = TFT_eSprite(&tft);

void setup(void) {
  Serial.begin(115200);
  tft.begin();
  tft.setRotation(0);
  Serial.println("TFT set up");

  // img.createSprite(240, 200);
  
}

void loop() {
  renderCircleLoadingFrame();
}

float angle = 0;
int centerX = 120;
int centerY = 60;
int radius = 40;
int x = 0;
int y = 0;
void renderCircleLoadingFrame() {
  delay(10);
  tft.fillCircle(x, y, 8 , TFT_BLACK);

  angle -= 0.1;
  if (angle <= 0) angle = 2 * PI;

  x = sin(angle) * radius + centerX;
  y = cos(angle) * radius + centerY;

  tft.fillCircle(x, y, 8 ,TFT_BLUE);
  tft.fillRect(0, 0, 24, 24, TFT_BLACK);
  tft.drawString(String(angle), 0, 0, 2);

  // img.pushSprite(0,0);
}