我正在尝试渲染一条弧线,该弧线从绿色开始,过渡到黄色,最后变为红色。现在它只是使用标准 GradientPaint 方法从绿色过渡到红色。有没有办法用 3 种颜色来实现?
public void paintComponent(Graphics gr) {
super.paintComponent(gr);
Graphics2D g = (Graphics2D) gr;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
BasicStroke wideStroke = new BasicStroke(24.0f);
g.setStroke(wideStroke);
g.setPaint(new GradientPaint(new Point(10, 140), Color.GREEN, new Point(100, 10), Color.RED));
g.draw(new Arc2D.Double(25, 25, 200, 200, 180, -90, Arc2D.OPEN));
}
最佳答案
感谢 MadProgrammer
public void paintComponent(Graphics gr) {
super.paintComponent(gr);
Graphics2D g = (Graphics2D) gr;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
BasicStroke wideStroke = new BasicStroke(24.0f);
g.setStroke(wideStroke);
LinearGradientPaint lgp = new LinearGradientPaint(
new Point2D.Float(0, 160),
new Point2D.Float(160, 0),
new float[] {0f, 0.5f, 1f},
new Color[] {Color.green, Color.yellow, Color.red}
);
g.setPaint(lgp);
g.draw(new Arc2D.Double(25, 25, 200, 200, 180, -90, Arc2D.OPEN));
}
关于java - 如何渲染具有 3 种颜色渐变的圆弧?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46332317/