import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.LinearGradient;
import javafx.scene.paint.Stop;
import javafx.stage.Stage;

public class PolyTransformFlushBug extends Application {
    public static double xpoints[] = { 10, 70, 10, 70 };
    public static double ypoints[] = { 10, 10, 70, 70 };

    @Override
    public void start(Stage stage) {
        Canvas cv1 = makeCanvas(false);
        Canvas cv2 = makeCanvas(true);
        HBox box = new HBox(cv1, cv2);
        stage.setScene(new Scene(box));
        stage.show();
    }

    public Canvas makeCanvas(boolean workaround) {
        Canvas cv = new Canvas(400, 400);
        GraphicsContext gc = cv.getGraphicsContext2D();
        gc.setFill(Color.WHITE);
        gc.fillRect(0, 0, 400, 400);
        
        gc.scale(5, 5);
        if (workaround) {
            gc.fillRect(0, 0, 1, 1);
        }
        gc.setLineWidth(10);
        LinearGradient lg = new LinearGradient(0.0, 0.0, 70.0, 70.0, false, CycleMethod.REFLECT,
                                               new Stop(0.0, Color.BLUE),
                                               new Stop(1.0, Color.GREEN));
        gc.setStroke(lg);
        gc.strokePolygon(xpoints, ypoints, xpoints.length);
        return cv;
    }
}