如何使像素完美Line2D - Graphics2D [英] How to make pixel perfect Line2D in - Graphics2D

问题描述

G'day，我有JPanel，上面有一些Line2D对象。问题是，当我画这条线时，它不会像我想要的那样出现。线条不平滑，很难解释，所以我发布了一张图片，

G'day, I have JPanel with some Line2D objects on it. Issue is when I draw this line it doesn't appear as I want them to. Lines are not smooth, It's hard to explain in word so I am posting an Image,

缩放区域，

如何让它们看起来更精致而不是皱。

How to make them look more polished rather than wrinkly.

谢谢

推荐答案

问题可能是你没有有抗锯齿功能打开你的图形上下文。在绘制之前尝试以下行：

The problem is likely that you don't have antialiasing turned on your Graphics context. Try the following line before you draw:

graphics.setRenderingHint(
        RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);

（其中，当然，图形是你的Graphics2D实例）。

(where, of course, graphics is your Graphics2D instance).

稍后当你发现你正在绘制的文本也是丑陋和锯齿状的时候，你会想要使用

Later on when you discover that the text you're drawing is also ugly and jagged, you'll want to use

graphics.setRenderingHint(
        RenderingHints.KEY_TEXT_ANTIALIASING,
        RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

然而，文字有点复杂;这个提示有几个值，你可以根据（除其他外）你正在绘制文本的屏幕类型来使用。您应该阅读 RenderingHints这些细节的.KEY_TEXT_ANTIALIASING API doc 。

However, text is a little more complicated; there's several values for this hint that you can use depending on (among other things) the type of screen you're drawing the text to. You should read the RenderingHints.KEY_TEXT_ANTIALIASING API doc for those details.

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