dea7b9050d
This is a minor bug fix for sgBucketDiff(). If you crossed the bucket size boundary, the answer for dx could be wrong. E.g. going from 0:0, 21:7 to 0:7, 21:7 would give you dx = 7 (correct) but going from 0:0, 21:7 to 0:3, 22:0 would give you dx = 6 (instead of 7) Previously it differenced the center longitudes of the buckets. When you cross a boundary, the center point of the larger bucket now lies on the edge of the smaller bucket. The result was a dx with an integer + 1/2 bucket, which rint() was rounding to the nearest even int. This function only seems to be used in TerraGear.
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