Fixups with Trimble .gps import and export.
The .gps file contains two blocks of data. The first one contains design heights. The min and max limits along X and Y axis were not always correct and was leading to a mismatch with the total number of points in the array.
The second array contains the amount of cut and fill in an array. The total number of points for this array was not always correct. We were also putting out this data reversed. ie cut was being put out as a fill value and vice versa. On Trimble FMX display this was showing with the colours reversed from what was expected. The grading still works OK though as bucket is driven from current GPS height and design value in the design array.
When exporting the Field Level 2 file we have added in a progress bar so that user knows something is still happening.
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