java - 使JFreeChart的标准刻度范围更厚

我使用JFreeChart制作了拨号图。我想知道是否有可能使指标更粗。我现在用来制作它们的代码是：

        StandardDialRange standarddialrange;
        StandardDialRange standarddialrange2;
        StandardDialRange standarddialrange3;
        if(isPercentageIV==true){
            standarddialrange = new StandardDialRange(90D, 100D, Color.GREEN);
            standarddialrange2 = new StandardDialRange(60D, 90D, Color.orange);
            standarddialrange3 = new StandardDialRange(0D, 60D, Color.RED);
        }
        else{
            standarddialrange = new StandardDialRange(.9*goal*dialScale, goal*dialScale, Color.GREEN);
            standarddialrange2 = new StandardDialRange(.6*goal*dialScale, .9*goal*dialScale, Color.orange);
            standarddialrange3 = new StandardDialRange(0, .6*goal*dialScale, Color.RED);
        }
        // Sets the scale/radius of all the indicators.
        standarddialrange.setScaleIndex(0);
        standarddialrange.setInnerRadius(0.58999999999999997D);
        standarddialrange.setOuterRadius(0.58999999999999997D);
        dialplot.addLayer(standarddialrange);

        standarddialrange2.setScaleIndex(0);
        standarddialrange2.setInnerRadius(0.58999999999999997D);
        standarddialrange2.setOuterRadius(0.58999999999999997D);
        dialplot.addLayer(standarddialrange2);

        standarddialrange3.setScaleIndex(0);
        standarddialrange3.setInnerRadius(0.58999999999999997D);
        standarddialrange3.setOuterRadius(0.58999999999999997D);
        dialplot.addLayer(standarddialrange3);

我尝试在网上查找内容，但无法弄清楚如何使其更厚。现在的状态使它们很难在远处的显示器上看到。我尝试更改外半径，但这样做只是使它们是两条细线，而不是一条大粗线。

最佳答案

覆盖draw()的StandardDialRange方法，并指定您首选的Stroke；我在以下示例中使用了4.0f。您需要根据需要使用公共访问器来概括现有代码。

plot.addLayer(new StandardDialRange(3 * maximumValue / 4, maximumValue, Color.red) {

    @Override
    public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, Rectangle2D view) {
        …
        g2.setPaint(this.getPaint());
        g2.setStroke(new BasicStroke(4.0f));
        g2.draw(arcInner);
        g2.draw(arcOuter);
    }
});