6.6 DUIM-Graphics Module
draw-circle
Generic function
Summary
Draws a circle with the specified center and radius.
Signature
draw-circle drawable center-x center-y radius #key start-angle end-angle filled? => ()
draw-circle* drawable center radius #key start-angle end-angle filled? => ()
Arguments
- drawable
- An instance of type
type-union(<sheet>, <medium>). - radius
- An instance of type
<real>. - start-angle
- An instance of type
false-or(<real>). - end-angle
- An instance of type
false-or(<real>). - filled?
- An instance of type
<boolean>. Default value:#t.
The following arguments are specific to draw-circle.
- center-x
- An instance of type
<real>. - center-y
- An instance of type
<real>.
The following argument is specific to draw-circle*.
- center
- An instance of type
<transform>.
Values
- None.
Library
duim-graphics
Module
duim-graphics
Description
Draws a circle on drawable with center (center-x,center-y) and a radius of radius pixels, using the current pen.
The start-angle and end-angle arguments let you draw a sector of a circle rather than a whole circle.
If filled? is #t, then the circle will be filled, using the current brush.
The function draw-circle* is identical to draw-circle, except that it passes composite objects, rather than separate coordinates, in its arguments. You should be aware that using this function may lead to a loss of performance.