JavaFX作业 [英] JavaFX Homework
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问题描述
希望完成这项功课。我有一个程序，将显示最多5个FanPanes，将有一个风扇旋转。您可以使用滑块控制风扇的速度，并使用按钮停止，播放和反转风扇的方向。
Looking to finish out this homework. I have a program that will show up to 5 "FanPanes" that will have a fan spinning. You can use a slider to control the speed of the fans, and use buttons to stop, play, and reverse the directions of the fans.
我遇到问题如何让我的滑块（slider2是我想从类FanPane使用的那个）更新风扇的刀片数量显示。我想能够从1个刀片显示到10个刀片。
I am having issues with figuring out how make my slider ("slider2" is what I want to use for it from the class FanPane) update the number of blades the fan shows. I want to be able to have anywhere from 1 blade shown to 10 blades.
另外，我遇到了让我的粉丝正确排队的问题。之前我已经纠正了，现在我已经添加了这些新的滑块，我的刀片在我的圈内没有正确排列。
Also, I am having issues with getting my fans lined up properly. I had it correct before and now that I've added these new sliders my blades don't line up properly inside my circles.
这是我的代码：
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.Node;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.FlowPane;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Arc;
import javafx.scene.shape.ArcType;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.util.Duration;
import javafx.scene.control.Slider;
import javafx.scene.layout.StackPane;
import javafx.scene.text.*;
public class FanWithControls extends Application {
@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
FanPane fan = new FanPane();
FlowPane spane = new FlowPane(5, 5);
spane.getChildren().addAll(fan);
HBox hBox = new HBox(5);
GridPane botPane = new GridPane();
Label numFans = new Label("Num Fans: ");
Label blades = new Label(" Blades: ");
Label total = new Label("Control All Fans: ");
Button btPause = new Button("Pause");
Button btResume = new Button("Resume");
Button btReverse = new Button("Reverse");
hBox.setAlignment(Pos.CENTER);
hBox.getChildren().addAll(btPause, btResume, btReverse);
Slider slider = new Slider(0, 5, 0);
Slider bSlider = new Slider(0, 10,0);
slider.setShowTickLabels(true);
slider.setShowTickMarks(true);
bSlider.setShowTickLabels(true);
bSlider.setShowTickMarks(true);
botPane.getChildren().addAll(numFans, slider, blades, bSlider, total);
botPane.setConstraints(total, 0, 0);
botPane.setConstraints(numFans, 3, 0);
botPane.setConstraints(slider, 4, 0);
botPane.setConstraints(blades, 6, 0);
botPane.setConstraints(bSlider, 7, 0);
BorderPane pane = new BorderPane();
pane.setPadding(new Insets(10, 30, 12, 12));
pane.setCenter(spane);
pane.setTop(hBox);
pane.setBottom(botPane);
// Create a scene and place it in the stage
Scene scene = new Scene(pane, 1200, 400);
primaryStage.setTitle("FanWithControls"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
fan.setAnimation(fan);
Timeline animation = fan.getAnimation();
//scene.widthProperty().addListener(e -> fan.setW(fan.getWidth()));
//scene.heightProperty().addListener(e -> fan.setH(fan.getHeight()));
spane.setHgap(5);
btPause.setOnAction((e) -> {
for (Node fans : spane.getChildren()) {
FanPane fanpane = (FanPane) fans;
fanpane.getAnimation().pause();
}
// animation.pause();
});
btResume.setOnAction((e) -> {
for (Node fans : spane.getChildren()) {
FanPane fanpane = (FanPane) fans;
fanpane.getAnimation().play();
}
// animation.play();
});
btReverse.setOnAction((e) -> {
for (Node fans : spane.getChildren()) {
FanPane fanpane = (FanPane) fans;
fanpane.reverse();
}
// fan.reverse();
});
slider.valueProperty().addListener((ov) -> {
// animation.setRate(slider.getValue());
if (spane.getChildren().size() < (int) slider.getValue()) {
for (int i = spane.getChildren().size(); i < (int) slider.getValue(); i++) {
FanPane fanPane = new FanPane();
spane.getChildren().add(fanPane);
fanPane.setAnimation(fanPane);
fanPane.rate();
}
} else if (spane.getChildren().size() > (int) slider.getValue()) {
for (int i = (int) slider.getValue(); i < spane.getChildren().size(); i++) {
spane.getChildren().remove(spane.getChildren().size() - 1);
}
}
});
}
/**
* The main method is only needed for the IDE with limited JavaFX support.
* Not needed for running from the command line.
*/
public static void main(String[] args) {
launch(args);
}
class FanPane extends Pane {
private double w = 200;
private double h = 200;
private double radius = Math.min(w, h) * 0.45;
private Arc arc[] = new Arc[4];
private double startAngle = 30;
private Circle circle = new Circle(w / 2, h / 2, radius);
private Timeline animation;
private Slider slider1 = new Slider(0, 15, 0);
private Slider slider2 = new Slider(0, 10, 0);
private BorderPane bpane = new BorderPane();
private Button pauseBt = new Button("Pause");
private Button resumeBt = new Button("Resume");
private Button reverseBt = new Button("Reverse");
private HBox btBox = new HBox(5);
private Label blank = new Label(" ");
private Label speed = new Label("Fan Speed: ");
private Label numBlades = new Label("Num Blades: ");
private VBox topBox = new VBox();
private VBox midBox = new VBox();
private GridPane gpane = new GridPane();
public FanPane() {
circle.setStroke(Color.BLUE);
circle.setFill(Color.WHITE);
circle.setStrokeWidth(4);
getChildren().add(bpane);
slider1.setShowTickLabels(true);
slider1.setShowTickMarks(true);
slider1.setMajorTickUnit(5);
slider1.setMinorTickCount(0);
slider1.setBlockIncrement(1);
slider2.setShowTickLabels(true);
slider2.setShowTickMarks(true);
slider2.setMajorTickUnit(5);
slider2.setMinorTickCount(0);
slider2.setBlockIncrement(1);
gpane.setConstraints(speed, 0, 0);
gpane.setConstraints(slider1, 1, 0);
gpane.setConstraints(numBlades, 0, 1);
gpane.setConstraints(slider2, 1, 1);
gpane.getChildren().addAll(speed, slider1, numBlades, slider2);
btBox.getChildren().addAll(pauseBt,resumeBt,reverseBt);
topBox.getChildren().addAll(blank, btBox);
bpane.setCenter(circle);
bpane.setTop(topBox);
bpane.setBottom(gpane);
bpane.setAlignment(topBox, Pos.CENTER);
pauseBt.setOnAction(e -> animation.pause());
resumeBt.setOnAction(e -> animation.play());
reverseBt.setOnAction(e -> this.reverse());
bpane.widthProperty().addListener(e -> this.setW(this.getWidth()));
bpane.heightProperty().addListener(e -> this.setH(this.getHeight()));
for (int i = 0; i < 4; i++) {
arc[i] = new Arc(w / 2, h / 2, radius * 0.9, radius * 0.9, startAngle + i * 90, 35);
arc[i].setFill(Color.RED); // Set fill color
arc[i].setType(ArcType.ROUND);
getChildren().addAll(arc[i]);
}
}
public Timeline getAnimation() {
return animation;
}
public void setAnimation(FanPane fan) {
this.animation = new Timeline(new KeyFrame(Duration.millis(50), e -> fan.move()));
animation.setCycleCount(Timeline.INDEFINITE);
animation.play();
}
private double increment = 5;
public void reverse() {
increment = -increment;
}
public void rate() {
slider1.valueProperty().addListener(ov -> animation.setRate(slider1.getValue()));
}
public void move() {
setStartAngle(startAngle + increment);
}
public void setStartAngle(double angle) {
startAngle = angle;
setValues();
}
public void setValues() {
radius = Math.min(w, h) * 0.45;
circle.setRadius(radius);
circle.setCenterX(w / 2);
circle.setCenterY(h / 2);
for (int i = 0; i < 4; i++) {
arc[i].setRadiusX(radius * 0.9);
arc[i].setRadiusY(radius * 0.9);
arc[i].setCenterX(w / 2);
arc[i].setCenterY(h / 2);
arc[i].setStartAngle(startAngle + i * 90);
}
}
public void setW(double w) {
this.w = w;
setValues();
}
public void setH(double h) {
this.h = h;
setValues();
}
public double getCenterX() {
return circle.getCenterX();
}
public double getCenterY() {
return circle.getCenterY();
}
public double getRadius() {
return circle.getRadius();
}
}
}
推荐答案
增加不。动态刀片，你需要改变否。你正在制作的弧线，它的长度和角度差异。
根据以下代码更改 FanPane 的构造函数。
To increase no. of blades dynamically, you need to change no. of arcs you are making, its length and angle difference.
Change your constructor of FanPane according to below code.
public FanPane(int blade) {
circle.setStroke(Color.BLUE);
circle.setFill(Color.WHITE);
circle.setStrokeWidth(4);
getChildren().add(bpane);
slider1.setShowTickLabels(true);
slider1.setShowTickMarks(true);
slider1.setMajorTickUnit(5);
slider1.setMinorTickCount(0);
slider1.setBlockIncrement(1);
slider2.setShowTickLabels(true);
slider2.setShowTickMarks(true);
slider2.setMajorTickUnit(5);
slider2.setMinorTickCount(0);
slider2.setBlockIncrement(1);
gpane.setConstraints(speed, 0, 0);
gpane.setConstraints(slider1, 1, 0);
gpane.setConstraints(numBlades, 0, 1);
gpane.setConstraints(slider2, 1, 1);
gpane.getChildren().addAll(speed, slider1, numBlades, slider2);
btBox.getChildren().addAll(pauseBt, resumeBt, reverseBt);
topBox.getChildren().addAll(blank, btBox);
Pane pane = new Pane(circle);
bpane.setCenter(pane);
bpane.setTop(topBox);
bpane.setBottom(gpane);
// bpane.setAlignment(topBox, Pos.CENTER);
pauseBt.setOnAction(e -> animation.pause());
resumeBt.setOnAction(e -> animation.play());
reverseBt.setOnAction(e -> this.reverse());
// bpane.widthProperty().addListener(e -> this.setW(this.getWidth()));
// bpane.heightProperty().addListener(e -> this.setH(this.getHeight()));
try {
arc = new Arc[blade];
int angleDiff = 360 / blade;
for (int i = 0; i < blade; i++) {
arc[i] = new Arc(w / 2, h / 2, radius * 0.9, radius * 0.9, startAngle + i * angleDiff, 180 / blade);
arc[i].setFill(Color.RED); // Set fill color
arc[i].setType(ArcType.ROUND);
pane.getChildren().addAll(arc[i]);
}
} catch (ArithmeticException ex) {
blade = 2;
arc = new Arc[blade];
int angleDiff = 360 / blade;
for (int i = 0; i < blade; i++) {
arc[i] = new Arc(w / 2, h / 2, radius * 0.9, radius * 0.9, startAngle + i * angleDiff, 180 / blade);
arc[i].setFill(Color.RED); // Set fill color
arc[i].setType(ArcType.ROUND);
pane.getChildren().addAll(arc[i]);
}
}
}
这篇关于JavaFX作业的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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