offset. second opinion.

[blob...@gmx.com]

I was using BRepOffsetAPI_MakeThickSolid and getting some weird tolerance results. I reproduced in DRAWEXE. Notice that the result of the offset and the original shape have a max tolerance that is quite large. This can't be right, can it?

Draw[1]> Draw[2]> pload MODELING
Draw[3]> box aBox 20 10 6
Draw[4]> maxtolerance aBox

## Tolerances on the shape aBox  (nbFaces:6  nbEdges:12 nbVtx:8)

    Face   : Min 1.00000e-07    Max  1.00000e-07
 
    Edge   : Min 1.00000e-07    Max  1.00000e-07
 
    Vertex : Min 1.00000e-07    Max  1.00000e-07
 
Draw[5]> explode aBox f
aBox_1 aBox_2 aBox_3 aBox_4 aBox_5 aBox_6
Draw[6]> offsetshape result aBox 1.0 aBox_1
OK. Offset performed succesfully.
Draw[7]> maxtolerance aBox

## Tolerances on the shape aBox  (nbFaces:6  nbEdges:12 nbVtx:8)

    Face   : Min 1.00000e-07    Max  1.00000e-07
 
    Edge   : Min 1.00000e-07    Max  1.00000e-03
 
    Vertex : Min 1.00000e-07    Max  1.00000e-03
 
Draw[8]> maxtolerance result

## Tolerances on the shape result  (nbFaces:23  nbEdges:48 nbVtx:28)

    Face   : Min 1.00000e-07    Max  1.00000e-07
 
    Edge   : Min 1.00000e-07    Max  1.00000e-03
 
    Vertex : Min 1.00000e-07    Max  1.00000e-03
 
Draw[9]>