java有没有办法在Swing中以亚像素精度绘制线条?
This question has been asked before,但答案不能解决问题,所以我再问一遍
有人建议,可以使用g2.draw(line)
,而不是使用g2.drawLine
,其中line
是Line2D.Double
。但是,正如您从屏幕截图中看到的,这些线仍然以整数像素结束(每组10条线完全平行)
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Line2D;
public class FrameTestBase extends JFrame {
public static void main(String args[]) {
FrameTestBase t = new FrameTestBase();
t.add(new JComponent() {
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
for (int i = 0; i < 50; i++) {
double delta = i / 10.0;
double y = 5 + 5*i;
Shape l = new Line2D.Double(5, y, 200, y + delta);
g2.draw(l);
// Base case, with ints, looks exactly the same:
// g2.drawLine(5, (int)y, 200, (int)(y + delta));
}
}
});
t.setDefaultCloseOperation(EXIT_ON_CLOSE);
t.setSize(220, 300);
t.setVisible(true);
}
}
那么,在Swing中是否不可能正确渲染不完全在像素上结束的线
# 1 楼答案
请尝试设置以下内容:
从这个答案中可以看出: Java - Does subpixel line accuracy require an AffineTransform?
以下是比较结果: