如何在JavaFX中将径向渐变（颜色）应用于节点？
此方法接受javafx.scene.paint.Paint类的对象作为参数。它是颜色和渐变的基类，用于用颜色填充形状和背景。
JavaFX中的javafx.scene.paint.RadialGradient类是Paint的子类，使用它可以用圆形颜色渐变图案填充形状。
现场演示
->
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.RadialGradient;
import javafx.scene.paint.Stop;
import javafx.stage.Stage;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Ellipse;
import javafx.scene.shape.Polygon;
import javafx.scene.shape.Rectangle;
public class RadialGradientExample extends Application {
public void start(Stage stage) {
//画一个圆
Circle circle = new Circle(75.0f, 65.0f, 40.0f );
//画一个矩形
Rectangle rect = new Rectangle(150, 30, 100, 65);
//画一个椭圆
Ellipse ellipse = new Ellipse(330, 60, 60, 35);
//绘制多边形
Polygon poly = new Polygon(410, 60, 430, 30, 470, 30, 490, 60, 470, 100, 430, 100 );
//设置径向渐变
Stop[] stops = new Stop[] {
new Stop(0.0, Color.WHITE),
new Stop(0.3, Color.RED),
new Stop(1.0, Color.DARKRED)
};
RadialGradient gradient = new RadialGradient(0, 0, 300, 178, 60, false, CycleMethod.NO_CYCLE, stops);
//设置图案
circle.setFill(gradient);
circle.setStrokeWidth(3);
circle.setStroke(Color.CADETBLUE);
rect.setFill(gradient);
rect.setStrokeWidth(3);
rect.setStroke(Color.CADETBLUE);
ellipse.setFill(gradient);
ellipse.setStrokeWidth(3);
ellipse.setStroke(Color.CADETBLUE);
poly.setFill(gradient);
poly.setStrokeWidth(3);
poly.setStroke(Color.CADETBLUE);
//设置舞台
Group root = new Group(circle, ellipse, rect, poly);
Scene scene = new Scene(root, 600, 150);
stage.setTitle("Radial Gradient");
stage.setScene(scene);
stage.show();
}
public static void main(String args[]){
launch(args);
}
}输出结果