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TFTLibrary > TFT
circle
Description
Draws a circle on the screen. 
The circle is drawn relative to its center point, which means the total diameter will always be an odd number.
Syntax
screen.circle(xPos, yPos, radius);
Parameters
- xPos : int, the location of the center of the circle on the x axis
- yPos : int, the location of the center of the circle on the y axis
- radius : int, the radius of the circle
Returns
int : the width of the screen in pixels
Example
  #include <SPI.h>
#include <TFT.h>            // Arduino TFT library
#define cs   10
#define dc   9
#define rst  8
TFT screen = TFT(cs, dc, rst);
void setup() {
  // initialize the screen
  screen.begin();
  // make the background black
  screen.background(0,0,0);
  // set the stroke color to white
  screen.stroke(255,255,255);
  // set the fill color to grey
  screen.fill(127,127,127);
  // draw a circle in the center of screen
  screen.circle(screen.width()/2, screen.height()/2, 10);
}
void loop() {
}
 
See also
Reference Home
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