这里有一些关于填充笔的讨论 http://www.mail-archive.com/rebol-bounce@rebol.com/msg02019.html
但是我在 rebol 的官方文档中看不到有关立方体、钻石等...对填充笔的影响的文档?
我正在尝试绘制一些具有发光效果的圆形矩形,但并不真正了解我正在使用的参数,所以我无法得到我想要的(我希望从中心开始的发光效果不是从黑暗的左上角):
view layout [
box 278x185 effect [ ; default box face size is 100x100
draw [
anti-alias on
; information for the next draw element (not required)
line-width 2.5 ; number of pixels in width of the border
pen black ; color of the edge of the next draw element
; fill pen is a little complex:
;fill-pen 10x10 0 90 0 1 1 0.0.0 255.0.0 255.0.255
fill-pen radial 20x20 5 55 5 5 10 0.0.0 55.0.5 55.0.5
; the draw element
box ; another box drawn as an effect
15 ; size of rounding in pixels
0x0 ; upper left corner
278x170 ; lower right corner
]
]
]