PHP Classes

File: sample.lgo

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File: sample.lgo
Role: Auxiliary data
Content type: text/plain
Description: Sample Logo Source Code
Class: Logo Interpreter
Logo language interpreter
Author: By
Last change: minor update
Date: 12 years ago
Size: 2,260 bytes
 

Contents

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/* PHP Online Interpreter By Dr Zhihua Lai doctor@zhihua-lai.com http://www.zhihua-lai.com/?do=Software.Logo note: case - insensitive and expressions should not contain spaces ~ */ # this is a comment. ; this is also a comment. // this is also also a comment. ////////////////////////// Global Vars Defined /////////////////// make "T 220 // Global Variable ////////////////////////// Procedures //////////////////////////// # Spiral to spiral :size :angle // recursive function with two parameters if (:size>:T) [stop] forward :size right :angle spiral :size+2 :angle // recursive call end # Tree to tree :size // with one parameter if (:size<10) [stop] fd :size lt 30 tree :size*0.7 ; left branch, recursive rt 60 tree :size*0.7 ; right branch, recursive lt 30 bk :size end to spiral2 :size if (:size>30) [stop] ; an exit condition fd :size rt 15 ; many lines of action spiral2 :size*1.02 ; the tailend recursive call end # Circles to n_eck :ne :sz repeat :ne [rt 360/:ne fd :sz] end # Circles to mn_eck :ne :sz repeat :ne [rt 360/:ne n_eck :ne :sz] end # Circles, Faster to anothercircle repeat 36 [jump 100 arc 360 100 jmp -100 turn 10] end ////////////////////////// Entry Program //////////////////////////// window ; set the window mode setfc yellow ; set flood colour fill ; fill the background penup ; pen up setxy 200 -150 ; set turtle position pd ; pen down setpc black spiral 0 91 ; do the work setpc blue pu setxy 80 130 pd spiral2 10 pu ; pen up setpc red; setxy -180 -100 ; set the location lt degree ; degree is a global variable pd ; pen down tree 100 ; draw a tree hideturtle ; ht = hide the turtle, it is actually a small circle pu home pd setpc green // mn_eck 36 20 ; very slow compared to the following line anothercircle setpc black pu setxy -250 -200 pd repeat 4 [fd 100 rt 90] pu setxy -200 -150 setfc red fill setpc blue ; last pc command sets the color of text //////////////////////////// End //////////////////////////////////////////