有没有办法动画LinearGradient嵌套到给定Shape的“移动”？比方说让LinearGradient向右或向左移动？我考虑了translateXproperty或Path对象，但我只想移动LinearGradient。
编辑28.09.2014
感谢@James_D提供有价值的帮助。但在我的项目中，我需要一个不同的解决方案。我已经解决了，结果可以在下面的工作示例中看到：
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.LinearGradient;
import javafx.scene.paint.Stop;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;
public class LinearGradientAnimation extends Application {
private Rectangle rect;
private Timeline timeline;
private double widthOfOneGradientCycle = 20.0;
private double gradientSlopeDegree = 45.0;
private double xStartStatic = 100.0;
private double yStartStatic = 100.0;
private double xEndStatic = xStartStatic + (widthOfOneGradientCycle * Math.cos(Math.toRadians(gradientSlopeDegree)));
private double yEndStatic = yStartStatic + (widthOfOneGradientCycle * Math.sin(Math.toRadians(gradientSlopeDegree)));
public Parent createContent() {
/* layout */
BorderPane layout = new BorderPane();
/* layout -> Rectangle */
rect = new Rectangle(0, 0, 200, 200);
/* layout -> Rectangle -> LinearGradient Animation */
timeline = new Timeline();
for (int i = 0; i < 10; i++) {
int innerIterator = i;
KeyFrame kf = new KeyFrame(Duration.millis(30 * innerIterator), new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent ae) {
double runningRadius = innerIterator * (widthOfOneGradientCycle / 10);
double xStartDynamic = xStartStatic + (runningRadius * Math.cos(Math.toRadians(gradientSlopeDegree)));
double yStartDynamic = yStartStatic + (runningRadius * Math.sin(Math.toRadians(gradientSlopeDegree)));
double xEndDynamic = xEndStatic + (runningRadius * Math.cos(Math.toRadians(gradientSlopeDegree)));
double yEnddynamic = yEndStatic + (runningRadius * Math.sin(Math.toRadians(gradientSlopeDegree)));
LinearGradient gradient = new LinearGradient(xStartDynamic, yStartDynamic, xEndDynamic, yEnddynamic,
false, CycleMethod.REPEAT, new Stop[] {
new Stop(0.0, Color.WHITE),
new Stop(0.5, Color.BLACK),
new Stop(1.0, Color.WHITE)
});
rect.setFill(gradient);
}
});
timeline.getKeyFrames().add(kf);
}
timeline.setCycleCount(Timeline.INDEFINITE);
/* return layout */
layout.setCenter(rect);
return layout;
}
@Override
public void start(Stage stage) throws Exception {
stage.setScene(new Scene(createContent()));
stage.setWidth(300);
stage.setHeight(300);
stage.show();
timeline.play();
}
public static void main(String[] args) {
launch(args);
}
}