setStitch desirable length for SPIRAL and SATIN

[tatyanade]

these two fill functions ignore the desirable length from setStitch and instead use something a lot closer to minimum stitch length

spiral
setStitch(2,10,0) , (2,50,0), and (50,50,0);

satin
setStitch(100,100,0), (10,100,0), (10,10,0);

I dont think this makes to much sense logically in terms of it not acting as the desired length, and also the default min stitch is a bit to small for these two functions (will post pics of satin stitch soon)

[LingDong-]

Yes this is the expected behavior. these two functions use extremely super-sampled calculations, before downsampling them in the resample step. The "desirable" length should be viewed as the maximum stitch length in the resample step. I only called it "desirable" instead of maximum because the randomization might alter it a little bit, but otherwise it is the maximum.

So I think the correct solution is for the user to increase the minimum stitch length. If you think there's a better default value for minimum stitch length, please let me know the value thanks.

[tatyanade]

Makes sense, Ill specify this in the examples so users know why it behaves differently , & will do some different tests on things to see what values are best