This page (revision-32) was last changed on 03-Feb-2023 15:21 by Maury Markowitz 

This page was created on 07-Aug-2017 01:38 by Roland B. Wassenberg

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27 03-May-2018 20:13 8 KB Maury Markowitz to previous | to last
26 01-May-2018 01:15 6 KB Roland B. Wassenberg to previous | to last
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WSFN
WSFN

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At line 15 changed one line
!Example
!Examples
At line 17 changed 3 lines
The following Extended WSFN code draws a square in the center of the ? screen:
12F4(24F2R)
The following Extended WSFN code draws a square in the center of the screen:
{{{
U2L12FND12F3(2R24F)2R12F
}}}
The code starts with the {{U}} which lifts the pen ({{U}}p) so the following commands will not draw to the screen. This is followed by a {{2}}, which means the next instruction should be run twice. In this case, the next instructions is {{L}}eft. Since each step of a turn is 45 degrees, this causes the turtle to point to the left side of the screen. Next, the turtle moves {{F}}orward 12 steps, is pointed {{N}}orth, and then put back {{D}}own so the following commands will cause drawing on the screen.
At line 23 added 4 lines
Next, the {{12F}} draws 12 steps, and since the turtle was pointing north, this causes a short line segment to be drawn up the screen. Then comes a {{3}}, meaning the following instruction should be run three times, but in this case it is not a single instruction, but all of the instructions in the parens. These rotate {{2R}}ight, or 90 degrees, and then draws a segment 24 long. So the first iteration draws the horizontal line across the top, then the vertical line down the right side, then across the bottom. Finally, the ending {{2R12F}} finishes off the square by drawing the missing segment on the bottom of the left vertical side.
As you can see, WSFN code can become almost unreadable even in simple examples!
This page (revision-32) was last changed on 03-Feb-2023 15:21 by Maury Markowitz  Top