Scalar constructor

const Scalar({
  1. double horizontal = 1.0,
  2. double vertical = 1.0,
})

A Scalar provides an opportunity to scale axis-based double data. Default constructor takes named paramters per axis. Use Scalar.xy as a shortcut to only provide positional double values.

  • Scalar.xy(5) is equivalent to Scalar(horizontal: 5, vertical: 5) and still const.

For use with Foils

Pointer movement data may be scaled independently before they translate to gradient "twinkling" transformation (offset/translation).

Scale up the motion factor by providing Scalar.horizontal or Scalar.vertical a value greater than 1.0, or scale down the influence by providing 0 <= scalar <= 1.0.

scaling pointer data

For use with Rolls

In the case of a Roll, a Scalar object provides a means to direct animation of the gradient if isAnimated is true. Also see the min and max values.

Implementation

const Scalar({this.horizontal = 1.0, this.vertical = 1.0});