createShader method
Resolve these Steps
to its smooth Gradient
counterpart, then use that
gradient's createShader()
method.
According to Gradient.createShader:
"Creates a Shader for this gradient to fill the given rect.
If the gradient's configuration is text-direction-dependent, for example it uses AlignmentDirectional objects instead of Alignment objects, then the textDirection argument must not be null.
The shader's transform will be resolved from the transform of this gradient."
Implementation
@override
ui.Shader createShader(ui.Rect rect, {ui.TextDirection? textDirection}) =>
asGradient.createShader(rect, textDirection: textDirection);