I had been promoting Turtle Graphics in RR/LC for many years. Here are 4 implementation of Turtle Graphics in LC: http://jamesphurley.com/Revolution.html <http://jamesphurley.com/Revolution.html>
Jim > > Message: 19 > Date: Mon, 30 Jan 2017 22:20:10 +0200 > From: Richmond Mathewson <richmondmathew...@gmail.com> > To: "u >> How to use LiveCode" <use-livecode@lists.runrev.com> > Subject: Yertle the Turtle > Message-ID: <aefb580f-87f2-cd2f-f22f-01e1dd90b...@gmail.com> > Content-Type: text/plain; charset=utf-8; format=flowed > > Having imported an SVG image of a tortoise into a stack . . . > > Being a fan of Seymour Papert . . . > > I thought I'd try and implement turtle graphics in Livecode. > > But came up against something awkward . . . > > [As a caveat, I should like to point out I don't know how the following > is implemented > in any other languages either] > > 1. Rotating my turtle widget is easy. > > 2. But telling the turtle to move forwards or backwards is not easy at all: > > In LOGO one can tell the turtle to turn left by, say, 30 degrees, and > then move forward 20 units. > > But in LiveCode, as far as I know, one can either move an object by > setting 2 coordinates, > or by 'set the loc'. > > 2.1. Now if I want my turtle, rotated at 30 degrees to move forward by > 20 units I will have to mess > around with SINE and COSINE and probably not end up with the turtle > moving exactly 20 units at 30 > degrees from the vertical. > > 2.2. I wonder how my turtle will be seen to draw a pen line from the two > ends of the "line". > > Richmond. > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
