The demo files were configured with units as Points with each artboard being 1000pt².
This is caused by this line in dzi_builder():
offset_right_f = float(offset_right / 10)
...where pixels of an individual artboard do not form a tidy ratio of artboard-pixels-to-output-pixels; for instance, all demo artboards are 1000pt, the js_create_artboards() scale is 300%, and the offset value is 3000. Scaling a 1in² artboard 300% isn't the same as scaling a 1000px artboard 300%.
There needs to be a check of artboard/AI file properties prior to this math.
The demo files were configured with units as Points with each artboard being 1000pt².
This is caused by this line in dzi_builder():
offset_right_f = float(offset_right / 10)...where pixels of an individual artboard do not form a tidy ratio of artboard-pixels-to-output-pixels; for instance, all demo artboards are 1000pt, the js_create_artboards() scale is 300%, and the offset value is 3000. Scaling a 1in² artboard 300% isn't the same as scaling a 1000px artboard 300%.
There needs to be a check of artboard/AI file properties prior to this math.