30 lines
826 B
JavaScript
30 lines
826 B
JavaScript
/**
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* 最後尾に固定メタ出力（index / length など）を持つノード用ヘルパ。
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*
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* @param {string} metaName - 末尾スロット名
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* @param {string} [metaType="INT"]
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*/
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export function createTrailingOutputHelpers(metaName, metaType = "INT") {
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const isMetaSlot = (node) => node.outputs[node.outputs.length - 1]?.name === metaName
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const countDataSlots = (node) => {
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if (!node.outputs?.length) {
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return 0
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}
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return isMetaSlot(node) ? node.outputs.length - 1 : node.outputs.length
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}
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const ensureMeta = (node) => {
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if (!isMetaSlot(node)) {
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node.addOutput(metaName, metaType)
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}
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}
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const getMetaIndex = (node) => {
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ensureMeta(node)
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return node.outputs.length - 1
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}
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return { isMetaSlot, countDataSlots, ensureMeta, getMetaIndex, metaName, metaType }
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}
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