tornadofx使用barchart、AnimationTimer、timeline動畫演示選擇排序，第1版
阿新 • • 發佈：2019-07-18
檢視演示：https://www.bilibili.com/video/av59653274/
import javafx.animation.AnimationTimer
import javafx.collections.FXCollections
import javafx.scene.chart.CategoryAxis
import javafx.scene.chart.NumberAxis
import javafx.scene.chart.XYChart
import javafx.util.Duration
import tornadofx.*
import kotlin.collections.ArrayList
class LearnApp : App(LearnV::class)
class LearnV : View("learn 選擇排序") {
// 動畫計時器
val aniTimer = AniTimer(this)
// 每次給其他人10元
val result = stringProperty()
lateinit var data1: XYChart.Data<String, Number>
val datas = FXCollections.observableArrayList<XYChart.Data<String, Number>>()
val N = 100
val randomBound = 200
val data0 = SelectionSortData(N, randomBound)
override val root = borderpane {
top = vbox(5) {
result.value = data0.numbers.toString()
label(result) {
isWrapText = true
}
hbox(5) {
button("run").action {
// ani()
aniTimer.start()
}
button("stop").action {
// ani()
aniTimer.stop()
}
}
}
center = group {
barchart("選擇排序", CategoryAxis(), NumberAxis(0.0, randomBound.toDouble(), 10.0)) {
series("Product X") {
(1..N).forEach {
data1 = data("${it}", data0.numbers[it - 1])
datas.add(data1)
}
barGap = 0.01
}
categoryGap = 5.0
prefWidth = 1000.0
}
}
prefHeight = 800.0
prefWidth = 1000.0
}
fun paint() {
timeline {
keyframe(Duration.seconds(0.0010)) {
for (i in data0.numbers.indices) {
var minIndex = i
var j = i + 1
if (j < data0.N()) {
(j..data0.N()).map {
if (data0.get(j) < data0.get(minIndex)) {
minIndex = j
}
}
}
data0.swap(i, minIndex)
keyvalue(datas[i].YValueProperty(), data0.numbers[i])
result.value = data0.numbers.toString()
}
}
}
}
// 此方法可以停止動畫
class AniTimer(val learnV: LearnV) : AnimationTimer() {
var lastTime = 0L
override fun handle(now: Long) {
if ((now - lastTime) > 10000000) {
lastTime = now
} else {
return
}
learnV.paint()
}
}
}
class SelectionSortData {
val numbers = ArrayList<Int>()
constructor(N: Int, randomBound: Int) {
(1..N).map { numbers.add((1..randomBound).random()) }
}
fun N() = numbers.size
fun get(i: Int) = numbers[i]
fun swap(i: Int, j: Int) {
val t = numbers[i]
numbers[i] = numbers[j]
numbers[j] = t
}
}