docs: Intro to Turtles Demo ( Fixes #197 )

Author: StartAutomating

Demos/Turtle_101-Intro-To-Turtles.demo.ps1

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+# Turtle 101 - Intro to Turtles
+
+# Turtle is a groovy graphics system that dates back to 1966.
+
+# Imagine you are a turtle holding a pen.
+
+# You can:
+# * Turn
+# * Move Forward
+# * Pick up the pen
+
+# Using these fundamental basics, we can theoretically draw any shape.
+
+# Let's start simple, by drawing a line
+turtle forward 42 save ./line.svg
+
+# Let's draw a line and take a few turns
+turtle forward 42 rotate 120 forward 42 rotate 120 forward 42 rotate 120 stroke '#4488ff' save ./triangle.svg
+
+# Let's make a square
+turtle forward 42 rotate 90 forward 42 rotate 90 forward 42 rotate 90 forward 42 rotate 90 stroke '#4488ff' save ./square.svg
+
+# Now let's do it the easier way, with square
+turtle square 42 stroke '#4488ff' save ./square2.svg
+
+# Now let's do it the general way, with polygon
+turtle polygon 42 4 stroke '#4488ff' save ./square4.svg
+
+# Our turtle is pretty smart, and so it can draw a lot of shapes for us.
+
+# A classic example is a 'flower', which repeats many polygons
+turtle flower stroke '#4488ff' save ./flower.svg
+
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