Well - that is pretty cool I increased the tollerance from the starting 
point of I think 1e-6 down and watched the parabolic blends disappear.  
On the steve.ngc file - I could not get rid of all of the parabolic 
blends.  At 1.3e-2 - yes .013 degrees I assume, I get this...

http://imagebin.org/280974

Notice the yellow is parabloic blends..  If I went much higher - the 
acceleration was violated..

now with the tighter default TP_ANGLE_EPSILON of 1e-6

http://imagebin.org/280977

so for that short path - 11 seconds vs 8.  I am wondering if there might 
have to be some sort of arc-arc arc-line blend fix (be it pre-processor 
maybe...)  for now until the overhaul.

Great work!

sam





On 12/06/2013 05:13 PM, Robert Ellenberg wrote:
> The minimum angle is TP_ANGLE_EPSILON, which is in tp.h. I'm also curious
> what will happen if this angle is larger. I suspect you'll get acceleration
> spikes if the angle is too large.
> On Dec 6, 2013 4:29 PM, "sam sokolik" <sa...@empirescreen.com> wrote:
>
>> Is that a constant you have set somewhere?  I would love to play with
>> it.  (make it a little loose)  I see the look-ahead depth constant and
>> such.
>>
>> Sam
>>
>>
>> On 12/05/2013 06:39 PM, Robert Ellenberg wrote:
>>> I took a look at steve.ngc, and it looks like there are a bunch of
>> "almost"
>>> tangent arcs, so there are still some slowdowns here. The latest commit
>>> should handle arcs and lines that are exactly tangent. I could cheat and
>>> make the tolerance looser, but it will likely introduce small
>> acceleration
>>> spikes that will be hard to control. Still, this type of benchmark is
>>> really useful to see what the new code can and cannot do.
>>>
>>> -Rob
>>>
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