CIRCLE Keyword

CIRCLE integer-expression, integer-expression, integer-expression, boolean-expression

Draws a circle using the current graphics colour (set with GCOL).

• First two parameters: the X,Y coordinates of the circle’s centre.
  
• Third parameter: the radius in pixels.
  
• Fourth parameter: a boolean; if FALSE only the outline is drawn, if TRUE the circle is filled.

---

Example: Outline

GCOL RGB(255,0,0)
CIRCLE 400, 300, 100, FALSE

Draws a red circle outline centred at (400,300) with radius 100.

---

Example: Filled

GCOL RGB(0,255,0)
CIRCLE 200, 200, 50, TRUE

Draws a filled green circle centred at (200,200) with radius 50.

---

Notes

• Coordinates are in screen pixels; (0,0) is the top-left corner.
  
• Circles are clipped at the screen edges if they extend beyond the display.
  
• GCOL accepts a 24-bit RGB colour, usually constructed with RGB.

See also: GCOL, LINE, RECTANGLE