[SML] spikemark

[Brian Munroe]

I've not used spikemark itself, but unless there is specific code in the program to deal with rotary motion as you have described (go clockwise to x degrees or go counterclockwise to y degrees), you need to think in a linear fashion. 

Assuming that forward is clockwise rotation and higher positional numbers you can set different "spikes" based on number of rotations from a zero point. Using your example of a spike at "195 degrees" you could have "0-195" be 195, "1-195" be 195+360, "2-195" be 195+720 etc. it is a bit confusing but also important to keep track of where you are in the overall rotation of the turntable. 

If you have a maximum rotation of 2 1/2 full spins (900 degrees) for instance, say because you have a cable dropping down at center, or your revolve is running off of a non-endless drum, you need to pay attention to that. 

In the past I have dealt with a system that tried to have a user interface of direction, number of rotations, final position 0-360 and they were never able to get it really working correctly and eventually went back to a more linear 0 to whatever input

Brian Munroe

Sent from a rather small device with big fingers

> On May 21, 2015, at 2:32 PM, Rob Graham via Stagecraft <stagecraft at theatrical.net> wrote:
> 
> Fellow listers-
> 
> I'm having some challeneges using "Spikemark." I've got 6 positions
> that my turntable uses, but I don't seem to be able to tell it "travel
> clockwise" or "travel counterclockwise" - it seems based entirely on
> math, based on the "degree position" - it seems silly that a point set
> at "195" degrees will go clockwise from numbers below it, and
> counterclockwise from numbers above it. Is there a way to say "go this
> direction?" I'd rather not have to set points every time using math.
> 
> That seems like the usefulness of having "spike marks" is somewhat
> reduced - it makes sense in my head to be able to say "go to [the
> blue] spike mark counterclockwise."
> 
> Does anyone with some experience using Spikemark have any suggestions?
> Seems there's nothing in the manual addressing that.
> 
> 
> -- 
> Rob Graham
> photonguide at gmail.com
> 
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