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POWhat are a line's exact dimensions in JavaFX 2?
 

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  1. POWhat are a line's exact dimensions in JavaFX 2?
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    <p>I'm wondering about a line's exact width in JavaFX 2.1. </p> <p>Creating a straight line starting at point (10;10) and ending at point (20;10) should have an expected width of 10px. When reading the line's width a value of 11px is returned. When starting the attached example and making a screenshot you'll see - at a higher zoom level - the line has a width of 12px and a height of 2px.</p> <p>Using a <code>LineBuilder</code> does not make any difference. I event tried to apply a different <code>StrokeType</code> without success. </p> <p>Creating a square with a side length of 10 returns the expected width of 10px. </p> <ol> <li>Why does <code>line.getBoundsInLocal().getWidth()</code> return different values from those I see in the rendered result (screenshot)? </li> <li>Why is there a difference concerning width when creating lines and polygons?</li> </ol> <p><strong>Example:</strong></p> <pre><code>import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.shape.Line; import javafx.scene.shape.Polygon; import javafx.stage.Stage; public class ShapeWidthDemo extends Application { @Override public void start(Stage stage) throws Exception { Group root = new Group(); int startX = 10; int startY = 10; int length = 10; Line line = new Line(startX, startY, startX + length, startY); System.out.println("line width: " + line.getBoundsInLocal().getWidth()); //-&gt;line width: 11.0 System.out.println("line height: " + line.getBoundsInLocal().getHeight()); //-&gt;line height: 1.0 root.getChildren().add(line); int startY2 = startY + 2; Polygon polygon = new Polygon( startX, startY2, startX + 10, startY2, startX + 10, startY2 + 10, startX, startY2 + 10); System.out.println("polygon width: " + polygon.getBoundsInLocal().getWidth()); //-&gt;polygon width: 10.0 System.out.println("polygon height: " + polygon.getBoundsInLocal().getHeight()); //-&gt;polygon height: 10.0 root.getChildren().add(polygon); stage.setScene(new Scene(root, 100, 100)); stage.show(); } public static void main(String[] args) { launch(args); } } </code></pre>
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