//--------------------------------------------------------------------------------------------------
public static double Volume(this TopoDS_Shape shape)
{
GProp_GProps massProps = new GProp_GProps();
BRepGProp.VolumeProperties(shape, massProps);
return(massProps.Mass());
}
//--------------------------------------------------------------------------------------------------
static bool _CompareVolumeProperties(TopoDS_Shape shape1, TopoDS_Shape shape2, out string message)
{
var gprops1 = new GProp_GProps();
var gprops2 = new GProp_GProps();
BRepGProp.VolumeProperties(shape1, gprops1);
BRepGProp.VolumeProperties(shape2, gprops2);
message = _CompareProperties(gprops1, gprops2, "Volume");
return(message != null);
}