9

徽标是一种编程语言，其最早可追溯到1967年，与其他语言相比，它在创建较少字节的图形方面具有巨大的潜力。

徽标是一种利用Turtle Graphics的教育性编程语言。

Logo有多种有趣的实现，包括：

此外，可以在线找到多个徽标解释器。

此页面旨在成为代码高尔夫的中心提示有关徽标编程语言的任何实现。

_{资料来源：吉姆·穆勒（Jim Muller）的《大徽标历险记》（Great徽标Adventure，1998年）}

code-golf tips

— 格兰特·米勒
source

3

LibreLogo

缩短颜色定义：

据记载，可以通过名称，标识符，RGB值或十六进制代码定义颜色。

在大多数情况下，如果您有机会为颜色常数使用标识符，则通常是最短的选择。

另一方面，鲜为人知的事实是，您还可以使用十进制值定义颜色，并且偶尔可以保存字节。

色卡：

+------------------------------------------------------------------------+   +-------------+
| Name                | Identifier | RGB           | HEX      | Decimal  |   | Best Option |
|------------------------------------------------------------------------|   |-------------|
| "BLACK"             | [0]        | [0,0,0]       | 0x000000 | 0        |   | 0           |
| "SILVER"            | [1]        | [192,192,192] | 0xc0c0c0 | 12632256 |   | [1]         |
| "GRAY"/"GREY"       | [2]        | [128,128,128] | 0x808080 | 8421504  |   | [2]         |
| "WHITE"             | [3]        | [255,255,255] | 0xffffff | 16777215 |   | [3]         |
| "MAROON"            | [4]        | [128,0,0]     | 0x800000 | 8388608  |   | [4]         |
| "RED"               | [5]        | [255,0,0]     | 0xff0000 | 16711680 |   | [5]         |
| "PURPLE"            | [6]        | [128,0,128]   | 0x800080 | 8388736  |   | [6]         |
| "FUCHSIA"/"MAGENTA" | [7]        | [255,0,255]   | 0xff00ff | 16711935 |   | [7]         |
| "GREEN"             | [8]        | [0,128,0]     | 0x008000 | 32768    |   | [8]         |
| "LIME"              | [9]        | [0,255,0]     | 0x00ff00 | 65280    |   | [9]         |
| "OLIVE"             | [10]       | [128,128,0]   | 0x808000 | 8421376  |   | [10]        |
| "YELLOW"            | [11]       | [255,255,0]   | 0xffff00 | 16776960 |   | [11]        |
| "NAVY"              | [12]       | [0,0,128]     | 0x000080 | 128      |   | 128         |
| "BLUE"              | [13]       | [0,0,255]     | 0x0000ff | 255      |   | 255         |
| "TEAL"              | [14]       | [0,128,128]   | 0x008080 | 32896    |   | [14]        |
| "AQUA"              | [15]       | [0,255,255]   | 0x00ffff | 65535    |   | [15]        |
| "PINK"              | [16]       | [255,192,203] | 0xffc0cb | 16761035 |   | [16]        |
| "TOMATO"            | [17]       | [255,99,71]   | 0xff6347 | 16737095 |   | [17]        |
| "ORANGE"            | [18]       | [255,165,0]   | 0xffa500 | 16753920 |   | [18]        |
| "GOLD"              | [19]       | [255,215,0]   | 0xffd700 | 16766720 |   | [19]        |
| "VIOLET"            | [20]       | [148,0,211]   | 0x9400d3 | 9699539  |   | [20]        |
| "SKYBLUE"           | [21]       | [135,206,235] | 0x87ceeb | 8900331  |   | [21]        |
| "CHOCOLATE"         | [22]       | [210,105,30]  | 0xd2691e | 13789470 |   | [22]        |
| "BROWN"             | [23]       | [165,42,42]   | 0xa52a2a | 10824234 |   | [23]        |
| "INVISIBLE"         | [24]       | N/A           | N/A      | N/A      |   | [24]        |
+------------------------------------------------------------------------+   +-------------+

— 格兰特·米勒
source

2

LibreLogo

使用缩写命令：

缩写命令（也称为“短名称”）在徽标的大多数实现中使用。

这是LibreLogo的缩写命令的完整列表。

+-----------------------------------------------+
| Full Command    | Short Command | Bytes Saved |
|-----------------------------------------------|
| forward 10      | fd 10         | 5           |
| back 10         | bk 10         | 2           |
| left 90         | lt 90         | 2           |
| right 90        | rt 90         | 3           |
| penup           | pu            | 3           |
| pendown         | pd            | 5           |
| position 0      | pos 0         | 5           |
| heading 0       | seth 0        | 3           |
| hideturtle      | ht            | 8           |
| showturtle      | st            | 8           |
| clearscreen     | cs            | 9           |
| pensize 10      | ps 10         | 5           |
| pencolor 0      | pc 0          | 6           |
| fillcolor 0     | fc 0          | 7           |
| picture [ ... ] | pic [ ... ]   | 4           |
+-----------------------------------------------+

— 格兰特·米勒
source

0

LibreLogo

随机数：

尽可能使用any代替random。

随机整数（0-9）：

x = int random 10     ; 17 bytes
x = int(ps any)       ; 15 bytes

随机浮点数（0-9）：

x = random 10         ; 13 bytes
x = (ps any)          ; 12 bytes

直接分配给设置：

pensize random 10     ; 17 bytes
ps random 10          ; 12 bytes
ps any                ; 6 bytes

— 格兰特·米勒
source

0

LibreLogo

利用PAGESIZE您的优势：

PAGESIZE是一个变量，该变量取决于LibreOffice Writer中的Paper Format（纸张格式），并返回一个包含[width, height]页面的数组（以磅为单位pt）。

这在许多情况下都可能有用，但是我个人发现它在不使用数字的情况下生成数字很有用[0-9]。

https://help.libreoffice.org/Writer/LibreLogo_Toolbar#PAGESIZE

价值图表：

+-------------------------------------------------------------------+
| Paper Format           | PAGESIZE                                 |
|-------------------------------------------------------------------|
| A6                     | [297.35433070866145, 419.75433070866137] |
| A5                     | [419.75433070866137, 595.4456692913386]  |
| A4                     | [595.4456692913386, 841.6913385826772]   |
| A3                     | [841.6913385826772, 1190.8913385826772]  |
| B6 (ISO)               | [354.2456692913386, 498.95433070866136]  |
| B5 (ISO)               | [498.95433070866136, 708.4913385826771]  |
| B4 (ISO)               | [708.4913385826771, 1000.8]              |
| Letter                 | [612.0, 792.0]                           |
| Legal                  | [612.0, 1008.0]                          |
| Long Bond              | [612.0, 936.0]                           |
| Tabloid                | [792.0, 1224.0]                          |
| B6 (JIS)               | [362.8913385826771, 516.2456692913386]   |
| B5 (JIS)               | [516.2456692913386, 728.6456692913387]   |
| B4 (JIS)               | [728.6456692913387, 1031.7543307086614]  |
| 16 Kai                 | [521.2913385826771, 737.2913385826771]   |
| 32 Kai                 | [368.64566929133855, 521.2913385826771]  |
| Big 32 Kai             | [396.7086614173228, 575.2913385826771]   |
| User                   | CURRENT PAGE SIZE                        | ← Current Paper Format
| DL Envelope            | [311.7543307086614, 623.5086614173229]   |
| C6 Envelope            | [323.29133858267716, 459.3543307086614]  |
| C6/5 Envelope          | [323.29133858267716, 649.4456692913386]  |
| C5 Envelope            | [459.3543307086614, 649.4456692913386]   |
| C4 Envelope            | [649.4456692913386, 918.7086614173228]   |
| #6¾ Envelope           | [261.35433070866145, 468.0]              |
| #7¾ (Monarch) Envelope | [279.35433070866145, 540.0]              |
| #9 Envelope            | [279.35433070866145, 639.3543307086613]  |
| #10 Envelope           | [297.35433070866145, 684.0]              |
| #11 Envelope           | [324.0, 747.3543307086613]               |
| #12 Envelope           | [342.0, 792.0]                           |
| Japanese Postcard      | [283.69133858267713, 419.75433070866137] |
+-------------------------------------------------------------------+

— 格兰特·米勒
source

徽标中打高尔夫球的技巧

LibreLogo

LibreLogo

LibreLogo

LibreLogo