The OpenLink Structured Data Editor enables editing of RDF documents (in TURTLE notation) stored in a variety of HTTP accessible documents. Actual document access requires the target document is served from a system that supports at least one of the following open standards: Linked Data Platform (LDP), WebDAV, SPARQL 1.1 Update, or the SPARQL Gr…
Symbols The following characters have a geometric interpretation.
#
Character
Meaning
1
F
Move forward by line length drawing a line
2
f
Move forward by line length without drawing a line
3
+
Turn left by turning angle
4
-
Turn right by turning angle
5
/
Reverse direction (ie: turn by 180 degrees)
6
[
Push current drawing state onto stack
7
]
Pop current drawing state from the stack
8
#
Increment the line width by line width increment
9
!
Decrement the line width by line width increment
10
@
Draw a dot with line width radius
11
{
Open a polygon
12
}
Close a polygon and fill it with fill colour
13
<
Multiply the line length by the line length scale factor
14
>
Divide the line length by the line length scale factor
15
&
Swap the meaning of + and -
16
(
Decrement turning angle by turning angle increment
17
)
Increment turning angle by turning angle increment
以下符号字符的几何解释。
#
字符
含义
1
F
按行绘制一条线向前移动
2
f
按线条长度向前移动而不绘制线条
3
+
通过转动角度向左转动
4
-
通过转动角度向右转动
5
/
反向（即：转动180度）
6
[
将当前绘图状态推入堆栈
7
]
从堆栈弹出当前绘图状态
8
#
按线宽增量增加线宽
9
!
通过线宽增量减小线宽
10
@
绘制带有线宽半径的点
12
}
关闭多边形并用填充颜色填充
13
<
将线长乘以线长比例因子
14
>
将线长除以线长比例因子
15
&
交换+和 - 的含义
16
(
通过转动角度增量减小转动角度
17
)
通过转动角度增量来增加转动角度
18
{
打开多边形
函数介绍
draw_path(length, angle, path, expalnation)
主要用来绘制海龟行走路径
length ---->每次行走的距离
angle ---->偏移的角度
path ---->初始路径图案,即0阶的形状
expalnation ---->用来记录打印每一步操作
apply_rules(path, rules)
主要是转换每一阶段的path
path ---->初始路径图案,即0阶的形状
rules ---->转换的规则
getColor()
提供一个随机rgb值
initialization()
初始化各种参数
Introduction(x=-600, y=-350)
注解
默认海龟初始位置(-600,-350)
run(n,angle,length,path,rules)
启动程序
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