Speed comparison

SkeinPyPy is faster then Skeinforge. Really. It is.

However, Slic3r is said to be even faster. So lets test this.

I've put Slic3r against SkeinPyPy and Skeinforge. All with the same settings. The raw results are:

| Filename                     |Slic3r |SkeinPyPy|Skeinforge|
| 18218/OwlReDo1_fixed_sc.stl  | 16:28 |   24:59 |  2:05:28 |
| 2577/10.stl                  |  2:26 |   13:46 |  1:06:34 |
| 2577/11.stl                  |  3:02 |    7:59 |    36:49 |
| 2577/12.stl                  |  2:12 |   11:09 |    49:57 |
| 2577/13.stl                  |  2:26 |   10:00 |    47:59 |
| 2577/14.stl                  |  2:33 |    7:41 |    39:08 |
| 2577/1.stl                   |  1:45 |   11:19 |    48:18 |
| 2577/2.stl                   |  1:46 |   10:36 |    48:45 |
| 2577/3.stl                   |  2:31 |   17:46 |  1:15:06 |
| 2577/4.stl                   |  2:37 |   14:55 |  1:15:58 |
| 2577/5.stl                   |  1:18 |   10:35 |    41:45 |

These files are from thingiverse. The number before the filename is the thingID. Now how does this compare, and what does this tell us? Changing the times into speedup percentages:

18218/OwlReDo1_fixed_sc.stl    | 151% | 502% | 761% |
2577/10.stl                    | 565% | 483% |2735% |
2577/11.stl                    | 263% | 461% |1213% |
2577/12.stl                    | 506% | 447% |2270% |
2577/13.stl                    | 410% | 479% |1971% |
2577/14.stl                    | 301% | 509% |1534% |
2577/1.stl                     | 646% | 426% |2760% |
2577/2.stl                     | 600% | 459% |2759% |
2577/3.stl                     | 705% | 422% |2984% |
2577/4.stl                     | 570% | 509% |2903% |
2577/5.stl                     | 814% | 394% |3211% |
2577/6.stl                     | 523% | 416% |2179% |

The 3 columns are: Slic3r compared to SkeinPyPy. SkeinPyPy compared to Skeinforge. And Slic3r compared to Skeinforge.

This shows that SkeinPyPy is pretty consistently 4-5x faster then Skeinforge.

It also shows that in the worst case, Slic3r is still 1.5x faster then SkeinPyPy. And in a best case it's almost 8x faster. Why this huge difference? Well. Skeinforge (and thus SkeinPyPy) gets slower if the object gets larger, EVEN if the amount of triangles remains the same. So a 20x20x20 box in Slic3r will be much faster then in SkeinPyPy. The mini-mendel plates are mostly rectangle boxes with not that many polygons. And thus slice a lot faster in Slic3r. For an organic model, like the Owl. The difference is much less noticeable.