亚像素图像渲染 [英] Sub-pixel Image rendering

问题描述

我知道子像素的形状，例如 Rectangle2D.Double ， Ellipse2D.Double 和 Line2D.Double -但我做不到找不到有关以亚像素精度绘制 Image / BufferedImage 的信息.

I am aware of sub-pixel shapes, such as Rectangle2D.Double, Ellipse2D.Double and Line2D.Double - but I couldn't find information about drawing an Image / BufferedImage with sub-pixel accuracy.

也许看起来像这样- Image2D.Double ?

有什么办法可以做到这一点?

Is there any way I can achieve this?

推荐答案

可以使用

Images may be drawn with an AffineTransform, which can specify scaling and translation with floating point values.

(请参见例如，要绘制缩放到一半大小且位置(10.5，10.5)的图像，请使用:

For example, to draw an image scaled to half size and at position (10.5, 10.5), use:

Graphics2D g = ...
BufferedImage myImage = ...
AffineTransform t = new AffineTransform();
t.translate(10.5, 10.5);
t.scale(0.5, 0.5);
g.drawImage(myImage, t, null);

您应确保 RenderingHints 已在Graphics2D对象上设置(对于初学者，将 KEY_ANTIALIASING 设置为 VALUE_ANTIALIAS_ON ).

You should ensure that appropriate RenderingHints have been set on the Graphics2D object (set KEY_ANTIALIASING to VALUE_ANTIALIAS_ON for starters).

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