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import { Value, value } from './value.ts'
export type SequenceFnProps = {  index: number  cumulativeIndex: number  numSlices: number}export type SequenceFn = (  props: SequenceFnProps,) => Stepexport type Sequence =  | Step[]  | SequenceFn
interface Step {  sliceIndex: Value  length?: Value // 0.0 - 1.0  duration?: Value // 0.0 - 1.0  start?: Value // 0.0 - 1.0  loop?: {    prob?: Value // 0.0 - 1.0    length?: Value // 0.0 - 1.0  }  swap?: {    index: Value    prob: Value  }  hop?: {    index: Value    prob: Value  }}
export const stepIndex = (index: number, step: Step): number => {  if (step.swap) {    const swapWith = value(step.swap.index, index)    const swapProb = value(step.swap.prob, index)
    if (Math.random() < swapProb) {      return Math.floor(swapWith)    }  }
  return index}
export const example: SequenceFn = ({  cumulativeIndex,}: SequenceFnProps) => {  const sliceIndex = Math.floor(    (Math.sin(Math.sin(cumulativeIndex / 0.098)) * 0.5 +      0.5) * 16,  )
  return {    sliceIndex,    length: sliceIndex % 4 === 1 ? 0.001 : 1,    loop: {      prob: 1,      length: 1 / ((sliceIndex % 3) + 1),    },  }}