Stroke のプロパティ

StrokeDemo.java

import java.util.stream.IntStream;
import javafx.application.Application;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.StrokeLineCap;
import javafx.scene.shape.StrokeLineJoin;
import javafx.stage.Stage;

public class StrokeDemo extends Application {

    @Override
    public void start(Stage stage) {
        GridPane root = new GridPane();
        root.setPrefSize(600, 500);
        root.setPadding(new Insets(15.0));
        root.setAlignment(Pos.CENTER);
        root.setVgap(20.0);

        IntStream.range(0, 3).forEach(i -> {
            ColumnConstraints cons = new ColumnConstraints(190);
            cons.setHalignment(HPos.CENTER);
            root.getColumnConstraints().add(cons);
        });

        drawVariedStroke(root);

        Scene scene = new Scene(root, 600, 500);

        stage.setTitle("Stroke Demo");
        stage.setScene(scene);
        stage.show();
    }

    private void drawVariedStroke(GridPane parent) {
        // デフォルト (線幅: 1, 線色: 黒)
        Path path = drawPath();
        parent.add(path, 0, 0);

        Label label = new Label("widhth: 1 color: black");
        parent.add(label, 0, 1);

        // 線幅: 10
        path = drawPath();
        path.setStrokeWidth(10.0);
        parent.add(path, 1, 0);

        label = new Label("widhth: 10 color: black");
        parent.add(label, 1, 1);

        // 線幅: 10, 線色: 赤
        path = drawPath();
        path.setStrokeWidth(10.0);
        path.setStroke(Color.RED);
        parent.add(path, 2, 0);

        label = new Label("widhth: 10 color: red");
        parent.add(label, 2, 1);

        // 角のデフォルト (マイター接合)
        Group group = new Group();
        path = drawThickPath();
        path.setStrokeLineJoin(StrokeLineJoin.MITER);
        group.getChildren().add(path);

        path = drawPath();
        path.setStroke(Color.WHITE);
        group.getChildren().add(path);
        parent.add(group, 0, 2);

        label = new Label("line join: MITER");
        parent.add(label, 0, 3);

        // 角を丸くする (ラウンド接合)
        group = new Group();
        path = drawThickPath();
        path.setStrokeLineJoin(StrokeLineJoin.ROUND);
        group.getChildren().add(path);

        path = drawPath();
        path.setStroke(Color.WHITE);
        group.getChildren().add(path);
        parent.add(group, 1, 2);

        label = new Label("line join: ROUND");
        parent.add(label, 1, 3);

        // 角を削る (ベベル結合)
        group = new Group();
        path = drawThickPath();
        path.setStrokeLineJoin(StrokeLineJoin.BEVEL);
        group.getChildren().add(path);

        path = drawPath();
        path.setStroke(Color.WHITE);
        group.getChildren().add(path);
        parent.add(group, 2, 2);

        label = new Label("line join: BEVEL");
        parent.add(label, 2, 3);

        // 線端のデフォルト (スクエア線端)
        group = new Group();
        path = drawThickPath();
        path.setStrokeLineCap(StrokeLineCap.SQUARE);
        group.getChildren().add(path);

        path = drawPath();
        path.setStroke(Color.WHITE);
        group.getChildren().add(path);
        parent.add(group, 0, 4);

        label = new Label("line cap: SQUARE");
        parent.add(label, 0, 5);

        // 線端を丸くする (ラウンド線端)
        group = new Group();
        path = drawThickPath();
        path.setStrokeLineCap(StrokeLineCap.ROUND);
        group.getChildren().add(path);
        
        path = drawPath();
        path.setStroke(Color.WHITE);
        group.getChildren().add(path);
        parent.add(group, 1, 4);

        label = new Label("line cap: ROUND");
        parent.add(label, 1, 5);

        // 線端を四角くする (BUTT線端)
        group = new Group();
        path = drawThickPath();
        path.setStrokeLineCap(StrokeLineCap.BUTT);
        group.getChildren().add(path);

        path = drawPath();
        path.setStroke(Color.WHITE);
        group.getChildren().add(path);
        parent.add(group, 2, 4);

        label = new Label("line cap: BUTT");
        parent.add(label, 2, 5);

        // 点線 (線とスペースの長さが同じ)
        path = drawPath();
        path.getStrokeDashArray().addAll(10.0);
        path.setStrokeWidth(5.0);
        parent.add(path, 0, 6);

        label = new Label("dash: 10");
        parent.add(label, 0, 7);

        // 点線 (線とスペースの長さが異なる)
        path = drawPath();
        path.getStrokeDashArray().addAll(10.0, 5.0);
        path.setStrokeWidth(5.0);
        parent.add(path, 1, 6);

        label = new Label("dash: 10, 5");
        parent.add(label, 1, 7);

        // 一点鎖線
        path = drawPath();
        path.getStrokeDashArray().addAll(10.0, 2.0, 5.0, 2.0);
        path.setStrokeWidth(5.0);
        parent.add(path, 2, 6);

        label = new Label("dash: 10, 2, 5, 2");
        parent.add(label, 2, 7);
    }

    private Path drawPath() {
        Path path = new Path(
                new MoveTo(40.0, 40.0),
                new LineTo(140.0, 40.0),
                new LineTo(40.0, 80.0)
        );

        return path;
    }

    private Path drawThickPath() {
        Path path = drawPath();
        path.setFill(Color.PINK);
        path.setStroke(Color.BLACK);

        // 線の太さを10にする
        path.setStrokeWidth(20.0);

        return path;
    }

    public static void main(String[] args) {
        launch(args);
    }
}