@tokens-studio/graph-engine
Version:
An execution engine to handle Token Studios generators and resolvers
79 lines • 2.56 kB
JavaScript
import { Node } from '../../programmatic/node.js';
import { NumberSchema } from '../../schemas/index.js';
import { arrayOf } from '../../schemas/utils.js';
import { setToPrecision } from '../../utils/precision.js';
export default class NodeDefinition extends Node {
static title = 'Harmonic Series';
static type = 'studio.tokens.series.harmonic';
static description = 'A "Harmonic Series" is a sequence of numbers whose reciprocals form an arithmetic progression. For example, in the series 1, 1/2, 1/3, 1/4, 1/5, the reciprocals form an arithmetic progression with common difference 1/6.';
constructor(props) {
super(props);
this.addInput('base', {
type: {
...NumberSchema,
default: 16
}
});
this.addInput('stepsDown', {
type: {
...NumberSchema,
default: 0
}
});
this.addInput('stepsUp', {
type: {
...NumberSchema,
default: 5
}
});
this.addInput('notes', {
type: {
...NumberSchema,
default: 5
}
});
this.addInput('ratio', {
type: {
...NumberSchema,
default: 2
}
});
this.addInput('precision', {
type: {
...NumberSchema,
default: 2
}
});
this.addOutput('array', {
type: arrayOf(NumberSchema)
});
this.addOutput('indexed', {
type: {
$id: `https://schemas.tokens.studio/studio.tokens.series.harmonic/indexed.json`,
type: 'object',
properties: {
index: {
type: NumberSchema
},
value: {
type: NumberSchema
}
}
},
visible: false
});
}
execute() {
const { base, precision, ratio, stepsDown, stepsUp, notes } = this.getAllInputs();
const values = [];
for (let i = 0 - stepsDown; i <= stepsUp; i++) {
values.push({
index: i,
value: setToPrecision(base * Math.pow(ratio, i / notes), precision)
});
}
this.outputs.array.set(values.map(x => x.value));
this.outputs.indexed.set(values);
}
}
//# sourceMappingURL=harmonic.js.map