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Topic: Turtle graphics

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	Logo programming language -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-09)
		The turtle moves with commands that are relative to its own position, "LEFT 90" meant rotate left by 90 degrees.
		The idea of turtle graphics is also useful for example in Lindenmayer system for generating fractals.
		The turtle's pen could be lifted and lowered; drawing a dotted line was rudimentary.
	www.absoluteastronomy.com /encyclopedia/l/lo/logo_programming_language.htm (2423 words)

	Turtle Graphics Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-09)
		Today, it is known mainly for its "turtle graphics", but it also has significant facilities for handling lists, files, and I/O. Logo can be used to teach most computer science concepts, as UC Berkeley Professor Brian Harvey does in his "Computer Science Logo Style" trilogy.
		Lego/Logo was a system for controlling the turtle or Lego motors and sensors, and was often used in the classroom in the mid 90's.
		Turtle graphics is a powerful method of introducing thinking but LOGO also has a few useful Cartesian commands
	www.alienartifacts.com /encyclopedia/Turtle_graphics (2512 words)

	Forth Factory: Turtle Graphics
		The principle advantage of Turtle Graphics is that it describes shapes in an intrinsic way, without referring to where they are or how they're oriented.
		If the turtle is to move 10 units forward at 30 degrees from the vertical, we need to compute how far up and how far over she goes.
		We want the turtle to be able to cross the edge of the screen, so that if we execute SQUARE when she is near the top we'll get a clipped box.
	www.atarimagazines.com /vbook/turtlegraphics.html (4302 words)

	Squeak: Learn Programming with Robots (Site not responding. Last check: 2007-10-09)
		I vaugly remember a programming language called turtle graphics where you had a turtle on screen and you told it where to roam to draw a line picture similar to what is described in the review.
		Turtle Graphics was a dialect of Logo designed for children.
		Is was based on Turtle Geometery which consisted of a point (the turtle) and a heading.
	www.robots.net /article/1657.html (669 words)

	jit.turtle (Site not responding. Last check: 2007-10-09)
		It interprets single char values in its inlet as ASCII letters that describe turtle graphics commands.
		Turtle graphics packages are fairly ubiquitous and some have conflicting syntaxes.
		The turtle syntax used in the object is optimized for the visualization of Lindenmayer Systems (or L-systems), which tend to use the same group of commands.
	www.cycling74.com /jitter-ref/jit.turtle.html (580 words)

	Turtle Interpretation (Site not responding. Last check: 2007-10-09)
		A turtle is sitting on a sheet of paper facing in a certain direction, denoted by the triple
		The triple of (x, y, z) denotes the current position of the turtle, and the triple of (h, l, u) denotes the current heading vector of the turtle in three dimensional space.
		The symbol [ denotes that the Turtle starts to sprout a substring and the symbol [ denotes the Turtle returns to the original heading direction and position.
	www.cs.umbc.edu /~ebert/693/TLin/node5.html (266 words)

	Introduction to Programming (Site not responding. Last check: 2007-10-09)
		It uses the Turtle Graphics programming environment and utilises the Pascal programming language.
		Turtle Graphics is available on the ISS desktop via Departmental Software (see the Useful Information handout from Lecture 1).
		More recent versions of Turtle Graphics may be available from the Turtle Graphics page on JCOM web site.
	www.leeds.ac.uk /acom/teaching/prt (578 words)

	CS 307: 3. Turtle Graphics
		If the pen is drawing, a line should be drawn on the screen from the current turtle position to its new position using the graphics functions.
		Note that the heading of the turtle should be the same after drawing the rectangle as it was before.
		The first line of the polygon should be drawn from the turtle's current position at the turtle's current heading.
	www.cs.utexas.edu /users/novak/cs307asg05.html (669 words)

	Turtle Graphics Programming with Newt (Site not responding. Last check: 2007-10-09)
		This tutorial is available as a collection of HTML and graphics files, and as an interactive Newton book created by Newt's Cape from these files (version and distribution information).
		The original turtle began life in the early 70's as a floor robot that could draw pictures when the user gave it commands like "forward", "right", "penup" and "pendown".
		Although turtles are practically synonymous with the Logo programming language, other languages such as Lisp and Smalltalk have also implemented turtle objects and environments.
	home.comcast.net /~saweyer/newton/newtturt.htm (2171 words)

	RJB - Computers - Software - Turtle (Site not responding. Last check: 2007-10-09)
		Turtle Graphics is my RISC OS version of the very popular LOGO programming
		RT moves the turtle to a certain angle.
		LT is the same as RT but the turtle is moved left instead of right.
	homepage.eircom.net /~lrtc/computers/software/turtle/index.html (204 words)

	Lab 2: Functions and Turtle Graphics (Site not responding. Last check: 2007-10-09)
		Central to the LOGO approach is the use of "turtle graphics", where the child/programmer draws pictures by moving an object (called a turtle) around on the screen.
		The graphics screen is 400 units wide and 250 units tall, where each unit is a single pixel (dot) on the screen.
		The coordinates of the turtle, along with its current heading (0 = up, 90 = right, 180 = down, etc.) and distance from the origin, are also displayed to the right.
	www.creighton.edu /%7Edavereed/Nifty/WalkLab.html (2071 words)

	16.4 turtle -- Turtle graphics for Tk
		The procedural interface uses a pen and a canvas which are automagically created when any of the functions are called.
		In the process, the direction of the turtle is changed by the amount of the
		The co-ordinates may be specified either as two separate arguments or as a 2-tuple.
	docs.python.org /lib/module-turtle.html (362 words)

	Advanced Functional Programming - Lab Assignment 1 (Site not responding. Last check: 2007-10-09)
		Implement the turtle graphics language as an embedded language library in Haskell.
		The turtle language should be provided to the user as a single module, exporting abstract datatypes and operations.
		Other turtle commands you should provide are: penup, pendown, which stop drawing and start drawing respectively, color, which changes the color of the turtle's pen, and stop, which stops the execution of a program.
	www.cs.chalmers.se /Cs/Grundutb/Kurser/afp/lab1.html (1179 words)

	TURTLE - Definition
		turtle bean, turtle graphics, Turtle peg, turtle soup, Turtle, Turtle-dove, Turtleback, Turtledove, Turtle-footed, Turtlehead, turtleneck, turtleneck collar, turtlenecked, Turtler, Turtle-shell, Turtling
		Seeing turtles in your dream, suggests that you will make slow but steady progress.
		Dreaming that you are being chased by a turtle indicates that you are hiding behind a facade instead of confronting the things that are bothering you.
	www.hyperdictionary.com /dream/turtle (82 words)

	C\C++\Visual C++ Program (Site not responding. Last check: 2007-10-09)
		While the pen is down, the turtle traces out shapes as it moves; while the pen is up, the turtle moves about freely without writing anything.
		Suppose that the turtle is somewhere near the center of the floor.
		As the turtle moves with the pen down, set the appropriate elements of array floor to 1s.
	groups.msn.com /CCVisualCProgram/general.msnw?action=get_message&mview=1&ID_Message=3465 (314 words)

	Logo type; animating Turtle Graphics.
		Arcade-style graphics are marvels of machine language programming, not something novice programmers can jump into right away.
		Animating Turtle Graphics is done much the way animation is done in cartoons.
		Of course, no Turtle Graphics drawing will move as quickly or as smoothly as an arcade game.
	atarimagazines.planetmirror.com /creative/v10n9/182_Logo_type_animating_Turt.php (552 words)

	2D Computer Graphics Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-09)
		2D computer graphics are mainly used in applications that were originally developed upon traditional printing and drawing technologies, such as typography, cartography, technical drawing, advertising, etc..
		A co-processor dedicated to blitting is known as a Blitter chip.
		2D graphics editors or drawing programs are application-level software for the creation of images, diagrams and illustrations by direct manipulation (through the mouse, graphics tablet, or similar device) of 2D computer graphics primitives.
	www.alienartifacts.com /encyclopedia/2D_computer_graphics (1713 words)

	Graphic commands
		Note that these are only some of the more commonly used graphic commands.
		sends the turtle to home position but leaves the drawing as is
		floods the area where the turtle is with the flood colour
	www.yukoncollege.yk.ca /%7Esrudge/comp052/grcom.html (417 words)

	Turtle Pascal Home Page
		Welcome to the home page of Turtle Pascal, a graphics programming environment designed to provide an enjoyable introduction to programming, together with a practical insight into fundamental concepts of computer science such as compilation and machine code.
		The current distribution is Version 7.00 of the Turtle Graphics software, produced in September 2003; no previous versions are now maintained, though the last distribution of the previous version (Version 6d) is provided here for backward compatibility of PCode files (since the virtual Turtle machine PCode instructions have been extended since Version 7.00).
		Click here for The Turtle Java System, which uses the same virtual machine as Turtle Pascal, but is programmed using Java syntax, and designed to facilitate the learning of Java.
	www.leeds.ac.uk /jcom/turtle/turtlepascal.htm (422 words)

	COS 126: Assignment 2. Mandelbrot Set
		The flying turtle graphics language from Lecture P2 has several commands for controlling the actions of an artistic turtle in a 512-by-512 box.
		Your task is to write a C program that produces the turtle graphics program as output, except with different arguments for the
		The following turtle graphics snippet plots a square of size 64, centered at (128, 128) in a shade of magenta.
	www.cs.princeton.edu /courses/archive/spring03/cs126/assignments/mandel.html (1069 words)

	CS42001 - Coursework Introduction (Site not responding. Last check: 2007-10-09)
		Coursework for the module CS42001 is based on the turtle graphics application.
		The turtle graphics page allows users to send commands directly to the turtle graphics sysetm which provides immediate feedback in the VRML pane.
		A simple application of the turtle graphics system together with some exercises is given at turtle.htm, this uses the VRML file turtle.wrl.
	www.dcs.napier.ac.uk /~andrew/turtle (200 words)

	Turtle Graphics (Site not responding. Last check: 2007-10-09)
		Turtle graphics is a style of computer drawing based on preserved state (position and orientation) and a small number of operations against that state (forward, turn, pen up and down).
		SeymourPapert promoted (invented?) turtle graphics and the associated turtle geometry as a simplification that made computers and algorithmic thought accessible to kids.
		A Lindenmayer System is a 3-dimensional turtle graphics system tuned to draw fractals.
	www.c2.com /cgi/wiki?TurtleGraphics (130 words)

	Turtle Graphics on the BBC Microcomputer and Acorn Electron, Dominic Verity, Acornsoft
		Turtle Graphics on the BBC Microcomputer and Acorn Electron, Dominic Verity, Acornsoft
		The Acorn Turtle Graphics package provide users with the turtle drawing commands of the language LOGO.
		Turtle Graphics is the way into LOGO for most beginners, whether child or adult.
	www.clive.nl /detail/23921 (174 words)

	Turtle Graphics In C#
		This program is the sample implementation of a logo language in c sharp (C#).
		Logo turtle is a turtle drawing application,which draw line on the screen with different colors and different shape.
		in this mode turtle can be move in any specified derection and length but not draw anything on screen.
	www.csharphelp.com /archives/archive268.html (200 words)

	Turtle Graphics (Site not responding. Last check: 2007-10-09)
		I have been much inspired by my friend, Bob Brill, who has designed the graphics software that I use, and whose Web site of algorithmic art is especially interesting and tasty.
		So far, my work with turtle imagery has boiled down to a battle between symmetry and asymmetry.
		You will notice among the titles references to "binary" and also to "ternary." So far, I have not made very much use of numbers using other than binary or ternary arithmetic with these turtle images, but I hope to work with 4, 5, 6, 7, 8, 12, and 16 soon.
	www.washingtonart.net /whealton/turtle.html (146 words)

	Bill Kendrick's WEB TURTLE - A Java-Free drawing program on the web! (Site not responding. Last check: 2007-10-09)
		is a fun drawing program which uses what's called "Turtle Graphics" (the same thing the computer language "Logo" uses for graphics).
		The idea behind "Turtle Graphics" is that you have a turtle who's got a pen stuck to its tail.
		Web Turtle was down for part of today while I upgraded it.
	www.sonic.net /~nbs/webturtle (184 words)

	MW_Primitives.html (Site not responding. Last check: 2007-10-09)
		Commands the active turtle to move backwards a specific number of
		FILL Instructs the active turtle to fill in the region it is in with its current
		Tells the active turtle to move to a specific set of coordinates on the page.
	moon.pepperdine.edu /%7egstager/MW_Primitives.html (518 words)

	Robots, Thumper (Site not responding. Last check: 2007-10-09)
		Thumper has been around for many years, it is what is called a floor turtle.
		It has a hole down through the middle to hold a felt pen for doing turtle graphics.
		The EEPROM also includes a program for the dead reckoning contest, and the robot art contest, that used to be held by the Seattle Robotics Society.
	www.seanet.com /~garyteachout/thumper.html (132 words)

	Turtle Graphics - Top Quality, Royalty-Free, Copyright Safe Clipart (Site not responding. Last check: 2007-10-09)
		These Turtle Graphics are brought to you by Gifart.com.
		To find out how you may use these Turtle Graphics images click on the thumbnails or one of the text links.
		More "Turtle" pages: 1 2 3 4 5 6 7 8 9 10
	www.clipartclipart.net /gifart/Turtle-Graphics-0211-1717-0135.html (149 words)

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