LinesPixelPrecision.java

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Line;
import javafx.scene.shape.StrokeType;
import javafx.scene.text.Text;
import javafx.stage.Stage;

/**
 * A JavaFX Example of lines drawn showing pixels width
 * when using fractional points and stroke widths.
 * @author carldea
 */
public class LinesPixelPrecision extends Application {

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

    @Override
    public void start(Stage stage) {
        stage.setTitle("LinesPixelPrecision ");
        Pane root = new Pane();
        Scene scene = new Scene(root, 800, 250, Color.WHITE);

        double y = 50.0;
        // draw a line using default values
        Line defaultLine = createLine(5.0, y, 100, y, 1, null);
        Text defaultLineText = createText(defaultLine, "Default");

        y = 70;
        Line fatLine = createLine(5.0, y, 100, y, 1, StrokeType.OUTSIDE);
        Text fatLineText = createText(fatLine, "Fat");

        y = 90;
        Line fuzzyLine = createLine(5.0, y, 100, y, .5, null);
        Text fuzzyLineText = createText(fuzzyLine, "Fuzzy");

        y = 110.5;
        Line thin1Line = createLine(5.0, y, 100, y, 1, null);
        Text thin1LineText = createText(thin1Line, "Thin 1");

        y = 130.5;
        Pane subPane = new Pane();
        Line thin2Line = createLine(5.0, y, 100, y, 0.10, StrokeType.OUTSIDE);
        subPane.getChildren().add(thin2Line);
        Text thin2LineText = createText(thin2Line, "Thin 2");

        root.getChildren().addAll(defaultLine, defaultLineText);
        root.getChildren().addAll(fatLine, fatLineText);
        root.getChildren().addAll(fuzzyLine, fuzzyLineText);
        root.getChildren().addAll(thin1Line, thin1LineText);
        root.getChildren().addAll(subPane, thin2LineText);

        stage.setScene(scene);
        stage.show();
    }

    private Line createLine(double startX, double startY,
                            double endX, double endY,
                            double strokeWidth, StrokeType strokeType) {
        Line line = new Line(startX, startY, endX, endY);
        line.setStrokeWidth(strokeWidth);
        if (strokeType != null) {
            line.setStrokeType(strokeType);
        }
        line.setStroke(Color.BLACK);

        return line;
    }
    private Text createText(Line line, String name) {
        // label line (%s, %s) to (%s, %s) stroke type: %s
        String displayString = String.format(" %s line (%s, %s) to (%s, %s) stroke type: %s stroke width: %s",
                name,
                line.getStartX(),
                line.getStartY(),
                line.getEndX(),
                line.getEndY(),
                line.getStrokeType().toString(),
                line.getStrokeWidth());

        Text text = new Text(displayString);
        text.setX( line.getEndX() + 5);
        text.setY( line.getEndY());
        text.setFill(Color.BLACK);
        return text;
    }
}