A graphics port
A list of real numbers
A boolean
A boolean
A keyword
General graphics port drawing arguments
The draw-polygons
function draws several polygon using a sequence alternating x and y values in the description argument as the vertices. The description arguments consists of groups of points as in draw-polygon
. When closed is non- nil
the edge from the last vertex to the first to be drawn. When filled is non- nil
a filled, closed polygons are drawn; the closed argument is ignored if filled is non- nil
. transform, foreground, background, operation, thickness, scale-thickness, dashed, dash, line-end-style, line-joint-style , stipple, pattern , mask-x, mask-y , and mask from the port 's graphics state are all used. The fill-rule specifies how overlapping regions are filled. Possible values are :even-odd
and :winding
.
This draws two heaxgons, one inside the other:
(gp:draw-polygons oo
'((150 100 200 100 235 150 200
200 150 200 115 150)
(140 90 210 90 250 150
210 210 140 210 100 150))
:closed t)