ArcCircle objects are created using the following functions. An ArcCircle is drawn specifying its center point, radius, start angle, and end angle in degrees.
| Function | Description |
| ArcCircle(x, y, radius, startAngle, endAngle) | Creates an ArcCircle with center at x, y, radius, startAngle (in degrees), endAngle (in degrees). Angles are interpreted such that 0 degrees is at the three o’clock position. A positive value indicates a counter-clockwise rotation – while a negative value indicates a clockwise rotation. The constants HALF_PI, PI, and TWO_PI can be used in place of degrees. |
| ArcCircle(x, y, radius, startAngle, endAngle, style) | Same as above, plus style. Style options are OPEN (a semi-circle – which is the default), CHORD (a closed semi-circle), and PIE (a closed pie segment). |
| ArcCircle(x, y, radius, startAngle, endAngle, style, color, fill, thickness) | Same as above, plus color (e.g. Color.BLACK (default), Color.ORANGE or Color(255, 0, 255), using specific RGB values), fill (boolean – default is False), and thickness (default is 1 (pixel)). |
Once an Arc has been created, it may be added to a Display.
arc = ArcCircle(100, 100, 20, 0, 180) d.add(arc)
Finally, you may use the following functions:
| Function | Description |
| arc.encloses(other) | Returns True if arc1 encloses other graphics object. |
| arc.intersects(other) | Returns True if arc1 intersects other graphics object. |
| arc.getX() | Returns the x coordinate (in pixels). |
| arc.getY() | Returns the y coordinate (in pixels). |
| arc.setX(x) | Sets the x coordinate (in pixels). |
| arc.setY(y) | Sets the y coordinate (in pixels). |
| arc.getPosition() | Returns the position as an (x, y) tuple. This is the top-left corner of the box that encloses the arc. |
| arc.setPosition(x, y) | Sets the position to x, y. This is the top-left corner of the box that encloses the arc. |
Making Music with Computers 