The dimensions of a sheet can be queries with the Sheet.getWidth() and Sheet.getHeight() methods.
const width = sheet.getWidth();
const height = sheet.getHeight();Both methods return a Number.
A bounding box representing the "active" area of the Sheet, i.e. the area containing Entities, can be retrieved with the Sheet.calcBoundingBox() method.
const boundingBox = sheet.calcBoundingBox();This method will return a Graphpaper.Rectangle representing the "active" area of a sheet. The rectange will be a bounding box of the region containing entities on the sheet. If there are no entities on the sheet, the rectangle will represent the entire sheet.
The offset of the Sheet, specifically the Sheet's DOM Element relative to its parent Element, can be retrieved with the Sheet.getSheetOffset() method.
const offsetPoint = sheet.getSheetOffset();This method will return a GraphPaper.Point with the offset. If DOM metrics have been locked, the cached values will be returned, if not the offsets will be calculated and returned.