acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
Smooth_Arc.ino (1775B)
      1 // Example for drawSmoothArc function.
      2 // Draws smooth arcs with rounded or square smooth ends
      3 
      4 #include <TFT_eSPI.h>       // Include the graphics library
      5 TFT_eSPI tft = TFT_eSPI();  // Create object "tft"
      6 
      7 // -------------------------------------------------------------------------
      8 // Setup
      9 // -------------------------------------------------------------------------
     10 void setup(void) {
     11   Serial.begin(115200);
     12 
     13   tft.init();
     14   tft.setRotation(1);
     15   tft.fillScreen(TFT_BLACK);
     16 }
     17 
     18 // -------------------------------------------------------------------------
     19 // Main loop
     20 // -------------------------------------------------------------------------
     21 void loop()
     22 {
     23   static uint32_t count = 0;
     24 
     25   uint16_t fg_color = random(0x10000);
     26   uint16_t bg_color = TFT_BLACK;       // This is the background colour used for smoothing (anti-aliasing)
     27 
     28   uint16_t x = random(tft.width());  // Position of centre of arc
     29   uint16_t y = random(tft.height());
     30 
     31   uint8_t radius       = random(20, tft.width()/4); // Outer arc radius
     32   uint8_t thickness    = random(1, radius / 4);     // Thickness
     33   uint8_t inner_radius = radius - thickness;        // Calculate inner radius (can be 0 for circle segment)
     34 
     35   // 0 degrees is at 6 o'clock position
     36   // Arcs are drawn clockwise from start_angle to end_angle
     37   uint16_t start_angle = random(361); // Start angle must be in range 0 to 360
     38   uint16_t end_angle   = random(361); // End angle must be in range 0 to 360
     39 
     40   bool arc_end = random(2);           // true = round ends, false = square ends (arc_end parameter can be omitted, ends will then be square)
     41 
     42   tft.drawSmoothArc(x, y, radius, inner_radius, start_angle, end_angle, fg_color, bg_color, arc_end);
     43 
     44   count++;
     45   if (count < 30) delay(500); // After 15s draw as fast as possible!
     46 }