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Librelogo Toolbar - Libreoffice Help LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 LibreLogo Toolbar From LibreOffice Help EN AST BG BN BN-IN CA CS DA DE EL ES EU FI FR HU IT JA KM KO NB NL OM PL PT PT-BR RU SL SV TR VI ZH-CN ZH-TW LibreLogo is a simple, localized, Logo-like programming environment with turtle vector graphics for te&ching of computing (programming and word processing), DTP a+d graphic design. See /--p455..w.numbertext.org/logo/librelogo.pdf3 Contents 7 LibreLogo -oolbar 8 Turtle moving icon% 9 Start Logo pro$ram : Home ; Clear screen < Program editor/S=+-ax hi$/lighting/Translatin$ > Command line ? Graphical user interface of basic turtle se-tin$% @ Program editi+$ 7A LibreLogo programmin$ l&+$0age 7A37 Differences from the Logo programming language 7A38 Other features of LibreLogo 77 LibreLogo commands 7737 Basic syntax 773737 Case sensitivity 773738 Program lines 773739 Comments 77373: Break program lines to multiple paragraphs 7738 Turtle movi+$ 773837 FORWARD (fd) 773838 BACK (bk) 773839 LEFT (lt) 77383: RIGHT (rt) 77383; PENUP (pu) 77383< PENDOWN (pd) 77383> POSITION (pos) 1 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 77383? HEADING (seth) 7739 Other turtle commands 773937 HIDETURTLE (ht) 773938 SHOWTURTLE (st) 773939 HOME 77393: CLEARSCREEN (cs) 77393; FILL and CLOSE 773: Pen settings 773:37 PENSIZE (ps) 773:38 PENCOLOR5 ENCOLOUR (pc) 773:39 PENTRANSPARENCD 773:3: PENCAP/LINECAP 773:3; PENJOINT/LINEJOINT 773:3< PENSTYLE 773; Fill settings 773;37 FILLCOLOR/FILLCOLOUR (fc) 773;38 FILLTRANS ARENCY 773;39 FILLSTYLE 773< Drawing objects 773<37 CIRCLE 773<38 ELLIPSE 773<39 SQUARE 773<3: RECTANGLE 773<3; POINT 773<3< LABEL 773<3> TEXT 773> Font settings 773>37 FONTCOLOR/FONTCOLOUR 773>38 FONTFAMILY 773>39 FONTSIZE 773>3: FONTWEIGHT 773>3; FONTSTYLE 773? PICTURE (pic) 773?37 Shape grouping 773?38 Startin$ new line shapes 773?39 Saving SVG images 773?3: Saving SVG5SMIL anim&tions (drawings with SLEEP commands) 773?3; Consistency at -he left border 773@ Loops 773@37 REPEAT 773@38 REPCOUNT 773@39 FOR IN 2 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 773@3: WHILE 773@3; BREAK 773@3< CONTINUE 7737A Conditions 7737A37 IF 7737A38 AND, OR, NOT 77377 Subroutines 7737737 TO, END 7737738 OUTPUT 7737739 STOP 77378 Def&0lt vari&bles 7737837 ANY 7737838 TRUE 7737839 FALSE 773783: PAGESIZE 773783; PI/π 77379 Input/Output 7737937 PRINT 7737938 INPUT 7737: SLEEP 7737; GLOBAL 7737< Functions 7737<37 RANDOM 7737<38 INT 7737<39 FLOAT 7737<3: STR 7737<3; SQRT 7737<3< SIN 7737<3> COS 7737<3? LOG10 7737<3@ ROUND 7737<37A ABS 7737<377 COUNT 7737<378 SET 7737<379 RANGE 7737<37: LIST 7737<37; TUPLE 7737<37< SORTED 7737<37> SUB 7737<37? SEARCH 7737<37@ FINDALL 7737<38A MIN 7737<387 MAX 3 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 7737> Color consta+-% LibreLogo toolbar The LibreLogo toolbar (View » Toolbars » Logo) con-ains turtle moving, program %-&rt, stop, home, clear screen, program editor/synta6 highlighting/-ra+slating icon% and an input bar (comm&+d line23 Turtle moving icons They are equivalents of the Logo commands “FORWARD 10”, “BACK 10”, “LEFT 7;”, “RIGHT 7;K. Clicking on one of -he icons .ill also focus the -urtle shape scrolling the page to i-s position. Start Logo program Click on the icon “S-art Logo program” -o execute -he text (or only t/e selected) text of the Writer document as a LibreLogo program. In an empty documen- &+ example program will be inserted a+d executed. Click on the icon “S-op” to stop the program execution3 Home Click on the icon “Home” to reset the position &+d settings of the turtle. Clear screen Click on the icon “Clear screen” to remove -he drawing objects of -he document. Program editor/Syntax highlighting/Translating The “m&gic wand” icon sets 2-page layout for program edi-ing, expa+ds and converts to uppercase the &bbreviated, lo.ercase Logo comm&+ds in the Writer document. Change the language of the documen- (Tools » Options » L&+$0age Se-tings » La+$0&$es » Wester+) and click on this icon to translate the Logo program to the selected la+$0&$e3 Command line 4 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 Hit En-er in the command line to exec0-e its conten-. To %-op -he program use the icon “Stop”. Hold down the Enter to repeat the comma+d line, for example, on the following command sequence: FORWARD 200 LEFT 89 To reset the comm&+) line click triple in it or press Ctrl-A to select the previou% commands, a+d type the new commands. Graphical user interface of basic turtle settings Turtle %/&pe of LibreLogo is & norm&l fixed size drawin$ object. You can positionate and rotate i- on sta+dard way, -oo, using the mouse &+d the Rotate icon of the Drawing Object Properties toolbar. Modify Line Wid-/' Line Color &+) Are& Color settings of the -urtle shape to set PENSIZE, PENCOLOR a+d FILLCOLOR attributes of LibreLogo. Program editing LibreLogo dr&.ings and programs 0se -he same Writer document. The LibreLogo ca+,as is on the first page of -he Writer document. You can insert a page break before the LibreLogo programs a+d set page zoom using the “magic w&+)” icon of the Logo toolbar, also change the fon- size for a comfortable 2-page layout for LibreLogo programmin$: left (first) page is the ca+,as, right (second) page is -he LibreLogo program editor. LibreLogo programming language LibreLogo is an easily localiz&ble, Logo-like programming language, localized in several l&+$0&ges b= LibreOffice n&tive la+$0&$e communi-ies. It is back-compatible with the older Logo systems in -he case of -he simple Logo programs used i+ education, eg. TO triangle :size REPEAT 3 [ FORWARD :size LEFT 120 ] END triangle 10 triangle 100 triangle 200 5 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 Differences from the Logo programming language List members are comm& separated4 POSITION [A, 0M Program blocks &+d li%-s &re different Program blocks need space or new line at paren-hesization: REPEAT 10 L FORWARD 10 LEFT 36 ] Lists need close parenthesi(&-ion: POSITION [0, 0], and not POSITION L 0, 0 ] 1-line function declarations &re no- supported (TO &+d END need new line%23 Other features of LibreLogo The colon is optional before t/e variable +&mes. TO triangle size REPEAT 3 [ FORWARD size LEFT 120 ] END String notation supports also orthographical and Python synta63 PRINT ".ord ; original Logo syntax PRINT “Arbitrary -ex-3” ; orthography, Writer PRINT 'Arbi-rary text.' ; =-/on synta6 =thon li%- and string ha+dli+$ PRINT “text”[2] ; print “xK PRINT “text”[1:3] ; print “e6K =thon-like FOR loop =thon-like ,ari&ble declaration: x = 15 PRINT x There are no ex-ra query fu+ctio+%4 PRINT FILLCOLOR p = POSITION PRINT p REPEAT 10 [ POSITION ANY POSITION p M Alter+&tive parenthesiz&tion in function calls TO star size color FILLCOLOR color REPEAT 5 [ LEFT 72 FORWARD size RIGHT 144 FORWARD size ] FILL END %-&r 100 “redK %-&r (1AA, “green”2 6 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 %-&r(1AA' “blue”) LibreLogo commands Basic syntax Case sensitivity Commands, color consta+-s &re case insensitive: PRINT “Hello, World!” print “Hello, World, again!” Vari&ble n&mes are case sensitive: a = 5 A = 7 PRINT a PRINT A Program lines Lines of & LibreLogo program are paragraphs in -he LibreOffice Writer document. A program line can con-&in multiple commands: PRINT “Hello, World!” PRINT “LibreLogo” Comments Lines or line parts are comments from & semicolon to the end of the line (paragraph): ; some comments PRINT 5 * 5 ; some comments Break program lines to multiple paragraphs It’s possible to break a program line for more paragraphs using the character tilde at the end of the line: PRINT “This is a very long ” + ~ “warning message” 7 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 Turtle moving FORWARD (fd) FORWARD 10 ; move forward 10pt (1pt = 1/72 inch) FORWARD 10pt ; see above FORWARD 0.5in ; move forward 0.5 inch (1 inch = 2.54 cm) FORWARD 1" ; see above FD 1mm FD 1cm BACK (bk) BACK 10 ; move back 10pt LEFT (lt) LEFT 90 ; turn counterclockwise 90 degrees LEFT 90° ; see above LT 3h ; see above (clock position) LT any ; turn to a random position RIGHT (rt* RIGHT 90 ; turn clockwise 90 degrees PENUP (pu) PENUP ; turtle will move without drawing PENDOWN (pd) PENDOWN ; turtle will move with drawing POSITION (pos) POSITION [0, 0] ; turn and move to the top-left corner POSITION PAGESIZE ; turn and move to the bottom-right corner POSITION [PAGESIZE[0], 0] ; turn and move to the top-right corner POSITION ANY ; turn and move to a random position HE(!,NG (seth* 8 of 24 795A<58A76 7?48: LibreLogo Toolbar - LibreOffice Help /--p%45/help.libreoffice.org/index.php?-itle=Writer/LibreL..3 HEADING 0 ; turn north HEADING 12h ; see above HEADING [0, 0] ; turn to the top-left corner HEADING ANY ; turn to a random direction Other turtle commands HIDETURTLE (ht) HIDETURTLE ; hide turtle (until the showturtle command) SHO'TURTLE (st) SHOWTURTLE ; show turtle HOME HOME ; reset initial turtle settings and position CLEARSCREEN (cs) CLEARSCREEN ; remove drawing objects of the document FILL and CLOSE FILL ; close and fill the actual
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