Difference between revisions of "VTube-LASER v1.77.4"

Revision 1.77.4

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VTube now has pulldown menus.

The menus are also floating because they can be pulled off the pulldown and moved anywhere on the screen during the current session.

Recent Projects can be reloaded with one click from the File pulldown menu.

VTube now allows you to save the current project without having to supply the current filename again. Hit the blue disk, and VTube will save the data without any interruption.

The Best Fit Automatic Weighting alignment type logic was redesigned to follow better logic for finding the best end-weights automatically.

The effect on alignment is this: As the deviations between MASTER and MEASURED data shrink - so do the number of iterations that VTube will take to align the measured tube. Tube shapes that are well within tolerance will align faster than tubes that are out of tolerance.

The algorithm now finds the orientations with the least number of total tangent points out of tolerance before examining the deviation averages. This extra FIRST step removes orientations that may have a lower average deviation - but a higher number of out-of-tolerance tangent points. This step is critical because the goal in this kind of alignment is to find the orientation with the fewest centerline tangent points out of tolerance.

The second significant change to the Best Fit algorithm is that VTube now allows you to choose the Deviation to Tolerance ratio in the Best Fit grid in order to help the Best Fit engine to know what deviation range you consider good enough for a solution. This can speed up the automatic fit significantly.


The ratio can be set from 0 to 1 as a floating point. If you set the value to 0.5, then the Best Fit engine will consider any deviation that is 50% of the tolerance to be good enough anywhere in the search for the best alignment orientation.

Other examples:

• D/T ratio = 1.0, then any deviation that is equal to or better than the tolerance qualifies.
• D/T ratio = 0.25, then any deviation 25% of the tolerance qualifies.
• D/T ratio = 0.00, then the Best Fit engine will run through all the steps regardless of how well the alignment fits.

Other notes:

• The default value is 0.25.
• This feature only applies to the Best Fit with Automatic End Weighting.

Two new progress dialogs show better detail during automatically weighted best fit alignment. The top dialog shows that VTube found alignments with at least one orientation with zero tangent points out of deviation.



The second dialog shows the current best deviation found.

If the deviations are good enough, then the operator can press the Stop button, and VTube will keep the best orientation it found to that point.