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Turtle graphics are often associated with the Logo programming language. [2] Seymour Papert added support for turtle graphics to Logo in the late 1960s to support his version of the turtle robot, a simple robot controlled from the user's workstation that is designed to carry out the drawing functions assigned to it using a small retractable pen set into or attached to the robot's body.
Delta Drawing Learning Program, later retitled Delta Drawing Today, is a turtle graphics drawing program developed by Computer Access Corporation, [1] and published by Spinnaker Software in 1983. Delta Drawing was intended for children age 4 to 14. It features a functional programming language for executing scripted drawing and painting ...
The step sizes and turn units are defined by the robot hardware, but are set to one pixel and 45 degrees in the turtle graphics versions. Missing in the robot versions, in the computer versions H returns the turtle Home in the center of the screen and C Clears any previous drawing. Thus, one can draw a square with the string: [6 ...
Small Basic includes a "Turtle" graphics library that borrows from the Logo family of programming languages. For example, to draw a square using the turtle, the turtle is moved forward by a given number of pixels and rotated 90 degrees in a given direction. This action is then repeated four times to draw the four sides of the square.
Hides the turtle and aids viewing a clear drawing on the screen: ht: SHOWTURTLE: ST: Shows the turtle after it is hidden from the screen: st: PENUP: PU: Sets the turtle to move without drawing: pu: PENDOWN: PD: Resets to a drawing pen when ordered to move: pd: CLEARTEXT: CT: Clears all text in the command screen: ct: CIRCLE: Makes a circle
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Thus, the turtles, being in a pet store with people touching them, turn into young humanoid turtles. Yoshi, having been in contact with sewer rats, becomes a humanoid rat. Although, Master Splinter did get the chance to be human again in the episode "Splinter No More", but realizes he prefers being with the turtles and had no place as a human ...