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analog_clock/AnalogClockDrawing/src/analogclock/AnalogClockDrawing.java @ 6b81b8b1

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/*
* Copyright © 2014 TAKAHASHI,Toru
*/
package analogclock;

import java.io.File;
import java.io.IOException;
import java.time.LocalTime;
import java.util.List;
import static java.util.stream.Collectors.toList;
import java.util.stream.IntStream;
import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.embed.swing.SwingFXUtils;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.image.WritableImage;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.RadialGradient;
import javafx.scene.paint.Stop;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;
import javafx.util.Duration;
import javax.imageio.ImageIO;

/**
* アナログ時計（長針、短針、秒針）を表示するプログラム。
*
* @author TAKAHASHI,Toru
*/
public class AnalogClockDrawing extends Application {

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private static final double UNIT_SIZE = 100d;
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private Rotate secondsHandRotation;
private Rotate minuteHandRotation;
private Rotate hourHandRotation;

@Override
public void start(Stage primaryStage) {

Group root = new Group();
root.getChildren().addAll(
createDial(),
createMinuteHand(),
createHourHand(),
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createSecondsHand(),
createTickMarks(),
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createCenter()
);

LocalTime time = LocalTime.now();
Timeline secondsAnimation = createRotateTimeline(Duration.seconds(60), getSecondsAngle(time), secondsHandRotation);
secondsAnimation.play();
Timeline minuteAnimation = createRotateTimeline(Duration.minutes(60), getMinuteAgnel(time), minuteHandRotation);
minuteAnimation.play();
Timeline hourAnimation = createRotateTimeline(Duration.hours(12), getHourAngle(time), hourHandRotation);
hourAnimation.play();

Scene scene = new Scene(root, UNIT_SIZE * 2, UNIT_SIZE * 2);
WritableImage snapshot = scene.snapshot(null);
try {
ImageIO.write(SwingFXUtils.fromFXImage(snapshot, null), "png", new File("clockSecondsHand.png"));
} catch (IOException ex) {

}
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}

Timeline createRotateTimeline(Duration duration, int startAngle, Rotate rotate) {
Timeline timeline = new Timeline();
rotate.setAngle(startAngle);
timeline.getKeyFrames().add(
new KeyFrame(duration, new KeyValue(rotate.angleProperty(), startAngle + 360))
);
timeline.setCycleCount(Animation.INDEFINITE);
return timeline;
}

// 時計の文字盤（背景）を作成する
Node createDial() {
RadialGradient gradient = new RadialGradient(
0, 0, 0.5, 0.5, 0.5, true, CycleMethod.NO_CYCLE,
new Stop(0.8, Color.WHITE), new Stop(0.9, Color.BLACK), new Stop(0.95, Color.WHITE), new Stop(1.0, Color.BLACK)
);
Circle circle = new Circle(UNIT_SIZE, UNIT_SIZE, UNIT_SIZE, gradient);
return circle;
}

// 時計の文字盤（分刻み）を作成する
Node createTickMarks() {
Group tickMarkGroup = new Group();
List<Node> tickMarks = IntStream.range(0, 60)
.mapToObj(this::createTickMark)
.collect(toList());
tickMarkGroup.getChildren().addAll(tickMarks);
return tickMarkGroup;
}

// 時計の文字盤の分刻みの1つを作成する
Node createTickMark(int n) {
Line line;
if (n % 5 == 0) {
line = new Line(UNIT_SIZE, UNIT_SIZE * 0.12, UNIT_SIZE, UNIT_SIZE * 0.2);
} else {
line = new Line(UNIT_SIZE, UNIT_SIZE * 0.15, UNIT_SIZE, UNIT_SIZE * 0.16);
}
line.getTransforms().add(new Rotate(360 / 60 * n, UNIT_SIZE, UNIT_SIZE));
line.setStrokeWidth(2);
return line;
}

// 時計の中心点を作成する
Node createCenter() {
return new Circle(UNIT_SIZE, UNIT_SIZE, UNIT_SIZE * 0.05, Color.BLACK);
}

// 時計の短針を作成する
Node createHourHand() {
hourHandRotation = new Rotate(0, UNIT_SIZE, UNIT_SIZE);
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Node hourHand = createHourOrMinuteHand(UNIT_SIZE * 0.4, Color.BLACK);
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hourHand.getTransforms().add(hourHandRotation);
return hourHand;
}

// 時計の長針を作成する
Node createMinuteHand() {
minuteHandRotation = new Rotate(0, UNIT_SIZE, UNIT_SIZE);
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Node minuteHand = createHourOrMinuteHand(UNIT_SIZE * 0.2, Color.BLACK);
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minuteHand.getTransforms().add(minuteHandRotation);
return minuteHand;
}

// 時計の秒針を作成する
Node createSecondsHand() {
Line line = new Line(UNIT_SIZE, UNIT_SIZE * 1.1, UNIT_SIZE, UNIT_SIZE * 0.2);
secondsHandRotation = new Rotate(0, UNIT_SIZE, UNIT_SIZE);
line.getTransforms().add(secondsHandRotation);
return line;
}

// 時計の針を作成する
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Node createHourOrMinuteHand(double stretchRelativeToRim, Color color) {
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Path path = new Path(
new MoveTo(UNIT_SIZE, UNIT_SIZE),
new LineTo(UNIT_SIZE * 0.9, UNIT_SIZE * 0.9),
new LineTo(UNIT_SIZE, stretchRelativeToRim),
new LineTo(UNIT_SIZE * 1.1, UNIT_SIZE * 0.9),
new LineTo(UNIT_SIZE, UNIT_SIZE)
);
path.setFill(color);
path.setStroke(Color.TRANSPARENT);
return path;
}

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}

private int getSecondsAngle(LocalTime time) {
return time.getSecond() * 360 / 60;
}

private int getMinuteAgnel(LocalTime time) {
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return (int) ((time.getMinute() + time.getSecond() / 60d) * 360 / 60);
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}

private int getHourAngle(LocalTime time) {
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return (int) ((time.getHour() % 12 + time.getMinute() / 60d + time.getSecond() / 3600d) * 360 / 12);
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}

}