1.5 class arc_point

An arc_point is a point of a path that is reached by an elliptical arc from the previous point. The arc is specified as in the SVG A command: the radii and rotation of the ellipse and two flags that select one of the four arcs through the two points. If the radii are too small to connect the points, they are scaled up just enough.

new(P, path),
send_list(P, append, [point(0,50), arc_point(100,50, 50)]).

See also class path and class curve_point.

1.5.1 Instance variables

arc_point <-> rx: num

Horizontal radius of the ellipse.

arc_point <-> ry: num

Vertical radius of the ellipse.

Defaults: arc_point<-rx, making the arc circular.

arc_point <-> rotation: num

Rotation of the x-axis of the ellipse in degrees.

Defaults: 0

arc_point <-> large: bool

If @on, use the arc that spans more than 180 degrees.

Defaults: @off

arc_point <-> sweep: bool

If @on, draw in the direction of positive angles, which is clockwise on the screen. If @off, draw anti-clockwise.

Defaults: @on

1.5.2 Send methods

arc_point ->initialise: x=int, y=int, rx=num, ry=[num], rotation=[num], large=[bool], sweep=[bool]

Create the end point of an arc. Only the end point and radius are required.