30 lines
1.1 KiB
JavaScript
30 lines
1.1 KiB
JavaScript
import { transform } from '../utils/transform.mjs';
|
|
import { useCombineMotionValues } from './use-combine-values.mjs';
|
|
import { useConstant } from '../utils/use-constant.mjs';
|
|
import { useComputed } from './use-computed.mjs';
|
|
|
|
function useTransform(input, inputRangeOrTransformer, outputRange, options) {
|
|
if (typeof input === "function") {
|
|
return useComputed(input);
|
|
}
|
|
const transformer = typeof inputRangeOrTransformer === "function"
|
|
? inputRangeOrTransformer
|
|
: transform(inputRangeOrTransformer, outputRange, options);
|
|
return Array.isArray(input)
|
|
? useListTransform(input, transformer)
|
|
: useListTransform([input], ([latest]) => transformer(latest));
|
|
}
|
|
function useListTransform(values, transformer) {
|
|
const latest = useConstant(() => []);
|
|
return useCombineMotionValues(values, () => {
|
|
latest.length = 0;
|
|
const numValues = values.length;
|
|
for (let i = 0; i < numValues; i++) {
|
|
latest[i] = values[i].get();
|
|
}
|
|
return transformer(latest);
|
|
});
|
|
}
|
|
|
|
export { useTransform };
|