JavaFx thin lines color distortion - javafx

Question

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.scene.shape.Line;
import javafx.stage.Stage;
public class LinesTest extends Application {
#Override
public void start(Stage stage) throws Exception {
final AnchorPane root = new AnchorPane();
final Line line1 = new Line(20, 10, 300, 10);
final Line line2 = new Line(250, 10, 400, 10);
root.getChildren().addAll(line1, line2);
stage.setTitle("Lines Test");
stage.setScene(new Scene(root, 500, 500));
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
If you run the code above you could mention that two lines overlapping create another color. Is it possible to prevent this behavior?

Answer 1

You can prevent it in 2 ways:
1) Use setSnapToPixel
final AnchorPane root = new AnchorPane();
root.setSnapToPixel(true);
2) Or, define lines' startY and endY values as half:
final Line line1 = new Line(20, 10.5, 300, 10.5);
final Line line2 = new Line(250, 10.5, 400, 10.5);
For the technical details of these I will leave to jewelsea's great answers:
What are a line's exact dimensions in JavaFX 2?
How to draw a crisp, opaque hairline in JavaFX 2.2?