Actionscript vector code for a snowflake of triangles

To finish drawing, we end at the same coordinates we started (NB: end_fill() will fill up any space outlined between it and the begin_fill(), regardless of whether the shape is closed). The draw() function calls t.goto() four times: we first вЂpick upвЂ™ the turtle and jump to the desired coordinates, put it вЂdownвЂ™ and draw our triangle with the next three goto() method calls. We use the turtleвЂ™s goto() method to tell turtle where itвЂ™s going next. The Sierpinski triangle is shape-based, as opposed to the line-based fractals we have created so far, so it will allow us to better see what we have drawn.ДЇinally, the most important innovation is our use of coordinates to guide the drawing.

Instead, by using begin_fill() and end_fill(), the line creates the shape that is filled at the moment end_fill() is called. This time, IвЂ™m not concerned with specifying a color for the line. Compartmentalization helps debugging and keeps functions from accessing variables that, by virtue of being in the global frame and not residing in a specific function, you may not realize are being accessing until something breaks. ItвЂ™s generally good practice to write programs where everything is defined within a function. The first is wrapping the code that used to be in the global frame into a main() function. IвЂ™ve also done a few things differently here, which will come in handy down the road. bgcolor ( 'black' ) p =, , ] draw ( t, p ) wn.

Actionscript vector code for a snowflake of triangles