@tokens-studio/graph-engine
Version:
An execution engine to handle Token Studios generators and resolvers
74 lines • 2.33 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 = 'Geometric Series';
static type = 'studio.tokens.series.geometric';
static description = 'Generates a geometric series f(n)= c * (f(n-1)) of numbers based on the base value, steps down, steps and increment.';
constructor(props) {
super(props);
this.addInput('base', {
type: {
...NumberSchema,
default: 16
}
});
this.addInput('stepsDown', {
type: {
...NumberSchema,
default: 0
}
});
this.addInput('stepsUp', {
type: {
...NumberSchema,
default: 1
}
});
this.addInput('ratio', {
type: {
...NumberSchema,
default: 1.5
}
});
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.geometric/indexed.json`,
type: 'object',
properties: {
index: {
type: NumberSchema
},
value: {
type: NumberSchema
}
}
},
visible: false
});
}
execute() {
const { base, precision, ratio, stepsDown, stepsUp } = this.getAllInputs();
const values = [];
for (let i = 0 - stepsDown; i <= stepsUp; i++) {
const value = setToPrecision(base * Math.pow(ratio, i), precision);
values.push({
index: i,
value
});
}
this.outputs.array.set(values.map(x => x.value));
this.outputs.indexed.set(values);
}
}
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