SpectrumNode¶

Overview¶

SpectrumNode displays a color spectrum for a range of values. By default, it maps values in the range [0,1] to the grayscale spectrum. The client can provide a different range, and different method of mapping value to color.

@author Chris Malley (PixelZoom, Inc.) @author Sam Reid (PhET Interactive Simulations)

Class SpectrumNode¶

import { SpectrumNode } from 'scenerystack/scenery-phet';

Constructor¶

new SpectrumNode( providedOptions? : SpectrumNodeOptions )¶

Instance Methods¶

Static Properties¶

DEFAULT_VALUE_TO_COLOR¶

(readonly)

value is [0,1] and maps to the grayscale spectrum

Type SpectrumNodeOptions¶

import type { SpectrumNodeOptions } from 'scenerystack/scenery-phet';

• size?: Dimension2
  dimensions of the spectrum
• valueToColor?: ( value: number ) => Color
  maps value to Color, range of value is determined by the client
• minValue?: number
  min value to be mapped to Color via valueToColor
• maxValue?: number
  max value to be mapped to Color via valueToColor
• & StrictOmit<NodeOptions, "children">

Source Code¶

See the source for SpectrumNode.ts in the scenery-phet repository.