PR 251184 Distance dimension can produce bogus values when Distance Type '3D

huangyhg

Distance dimension can produce bogus values when Distance Type '3D Shortest' is specified with 'parallel' lines.
<< Larry Clark  --  10/23/07  15:08:25>>
The distance dimension can produce bogus values when Distance Type '3D Shortest' is specified with 'parallel' lines selected.  By parallel, I mean that the vectors of the parallel lines are identical to each other within the precision of the displayed values in the part program.  The attached part program illustrates the issue with two lines constructed from parallel features on the bsbsolid CAD.  
NOTE:  I have discussed this with Dan Zwick who has already identified the source of the problem and has a resolution.
Steps to reproduce:
1)  Reveiw the attached part program.  Toward the bottom there are two lines constructed between auto corner points on the front of the bsbsolid, CAD, LIN_PARALLEL1 and LIN_PARALLEL2.  Their vectors are both <1,0,0>.  The dimension "D7" is specified as the 3D shortest distance between the two lines, which should be 0.95 inches of separation.  However, the nominal value displays as 0.0708 and the meausred value displays as 0.0714.  
Results:
I would anticipate a nominal and measured value of 0.9500 inches.
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<< Jared Hess (Development Notes)  --  04/08/09  23:19:58>>
This has been addedtoreadme for v44 (or ignored if internal item).
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<< Changes made by Neil Kay -- 02/25/09  14:59:43>>
Status:  RESOLVED to CLOSED
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<< Dan Zwick  --  10/30/07  12:07:39>>
Fixed. Files uploaded:
V43B\DIMENS\DIM_3D_D.CPP
V43R\DIMENS\DIM_3D_D.CPP
V44B\DIMENS\DIM_3D_D.CPP
This problem doesn't exist before 4.3 because the shortest distance option between lines is new in 4.3.
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<< Changes made by Dan Zwick -- 10/30/07  12:09:10>>
Action:  Dan Zwick to Larry Clark, Status:  OPEN to RESOLVED
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<< Changes made by Tim Wernicke -- 10/29/07  16:24:17>>
Priority:  to Stop Rel.
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<< Dan Zwick  --  10/23/07  15:02:32>>
As Larry wrote, I already have a solution. I just need a priority so I know where to upload it.
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<< Changes made by Dan Zwick -- 10/23/07  15:01:15>>
Action:  Paola Pallo to Dan Zwick, Assigned:  Paola Pallo to Dan Zwick
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