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phucktdt / eggbotcode

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Maze plotting requires high drawing precision for decent results #40

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
The graphics generated by the Eggmazing contributed extension are not very 
friendly for new Eggbot users.  To get decent plotting results, there needs to 
be very minimal slippage while plotting.  That is, high plotting precision is 
required.

If the extension were to generate graphics which require much less precision, 
then it would be much more user friendly.

Original issue reported on code.google.com by newman.d...@gmail.com on 27 Apr 2011 at 7:47

GoogleCodeExporter commented 8 years ago 
Checked in as revision 207.  Originally, I made a new GUI which had an 
"Advanced" tab which allowed selection of the old plotting algorithm. However, 
testing shows that the new algorithm is almost as good as the old one.  So, I 
left the GUI as it was before with no ability to select which algorithm is 
used: users unconditionally get the new algorithm.  I did, however, preserve 
the old code and it can be selected by setting self.hpp = True.

The new algorithm draws the maze column by column, moving down one column and 
then up the next.  This corresponds to plotting sections of the maze vertically 
on the egg.  The net effect is that only terribly gross slippage will affect 
the local appearance of the plotted maze.  When slippage is moderate, the maze 
will locally and globally look quite good (cell walls well aligned).  The 
typical "problem" caused by slippage will be confined to the western and 
eastern edges of the maze not meeting exactly.

I also changed the page height from 1000 to 800 pixels.  And, in the solution 
layer, the starting cell is drawn, then the solution, and then the ending cell. 
 Previously, the starting and ending cells were first drawn before the solution 
path.  That caused the pen to go to the start, the end, and then back to the 
start for the path and ending, at the path's end, at the ending cell.  Thus 
drawing the ending cell last takes less wall-clock time.

Original comment by newman.d...@gmail.com on 27 Apr 2011 at 8:08