GCoordinateConvertor typedef
GCoordinateConvertor =
Offset Function({required Rect area, required GPointViewPort pointViewPort, required GValueViewPort valueViewPort, required double x, required double y})
User defined function to convert a value pair (x, y) to position in the view area
Implementation
typedef GCoordinateConvertor =
Offset Function({
required double x,
required double y,
required Rect area,
required GPointViewPort pointViewPort,
required GValueViewPort valueViewPort,
});