TIEPolylineLayer.CalculateArea
Declaration
function CalculateArea(Units: TIEUnits): double;
Description
Returns the area covered by drawn area of the polyline layer.
Note:
◼ Use
TImageEnView.SetScale to adjust the scale of units
◼ Polyline must contain at least three points
◼ Layer will be treated as a polygon even if not
closed◼ Polyline measurement is less accurate than
other layer typesExample
// Show area of current polygon in MM
ShowMessage( 'Area is ' + IntToStr( Trunc( TIEPolylineLayer( ImageEnView1.CurrentLayer).CalculateArea( ieuMillimeters ) )) + ' mm' );
See Also
◼ CalculateLength◼ CalculateCentroid◼ SetScale◼ Dpi◼ MeasureUnits