Class FileMap

src/main/java/trace/video/ImageCache.kt:185–219

        private var remap: Array<Int>

        init {
            remap = Array<Int>(ff.size, { it })
        }

        fun length(): Int {
            return remap.size
        }

        override fun apply(x: Int): String {
            var x = x
            if (x < 0) x = 0
            return ff[remap[x!! % remap.size]]!!.absolutePath
        }

        fun remap(num: Int, mapper: Function<Int, Int>) {
            remap = Array<Int>(ff.size, { mapper.apply(it) })
        }
    }

    companion object {

        var synchronous = Options.dict().isTrue(Dict.Prop<Int>("offline"), false)

        fun mapFromDirectory(dir: String, match: String): FileMap {

            val f = File(dir)
            val ff = f.listFiles { dir, name -> name.matches(match.toRegex()) }

            Arrays.sort(ff!!)

            return FileMap(ff)
        }

        fun mapFromDirectory(dir: String, match: String, dec: Int): FileMap {

            val f = File(dir)
            val ff = f.listFiles { dir, name -> name.matches(match.toRegex()) }