1.24 class circle

A circle just an ellipse with equal graphical<-width and graphical<-height. It's border-line may have a graphical<-texture and graphical<-pen. The circle's interior may be filled with a colour using circle->fill.

See also

class ellipse

1.24.1 Instance variables

circle <- fill: colour|{foreground,background}*

When a colour is defined, the interior of the circle is filled with this colour. The circle is transparent if circle<-fill equals @nil.

Defaults: @nil (transparent).

1.24.2 Send methods

circle ->diameter: int

Inherits description from: circle<-diameter

circle ->geometry: x=[int], y=[int], width=[int], height=[int]

Handle general resizing of the circle. If either graphical<-width or graphical<-height is specified this value is used for both parameters. If both are specified the minimum of the two is used for both.

circle ->inside: x=int, y=int

Succeed if the point (X, Y) — in the circle's graphical<-device coordinate system — lies inside the circle: (X-cx)² + (Y-cy)² ≤ r². Bbox corners just miss.

Same test drives graphical->in_event_area; that method additionally inflates the radius by event_tolerance pixels so hits within tolerance of the outline still count.

See also

ellipse->inside

circle ->radius: int

Inherits description from: circle<-radius

circle ->rotate: int

The only PCE class with fully implemented rotation!

1.24.3 Get methods

circle <-diameter: -> int

Sets graphical<-width and graphical<-height to this value. See also circle->radius.

circle <-radius: -> int

Half of the graphical<-width. circle->radius sets graphical<-width and graphical<-height to twice the argument.