Java 如何剪线?
以下是我的代码:Java 如何剪线?,java,javafx,clip,Java,Javafx,Clip,以下是我的代码: public void start(Stage primaryStage) throws Exception { Pane pane = new Pane(); Scene scene = new Scene(pane, 500, 500); Line line = new Line(0, 200, 500, 200); line.setStrokeWidth(2); line.setStroke(Color.RED); pa
public void start(Stage primaryStage) throws Exception {
Pane pane = new Pane();
Scene scene = new Scene(pane, 500, 500);
Line line = new Line(0, 200, 500, 200);
line.setStrokeWidth(2);
line.setStroke(Color.RED);
pane.getChildren().add(line);
primaryStage.setScene(scene);
primaryStage.show();
}
它输出一条线,但我想剪辑这条线。例如:如果我有一条从0,200开始到500,200结束的线,那么我想把它从200,200剪辑到400,200。
我有没有办法把线剪断?感谢您的帮助!谢谢。我在setOnMouseClicked监听器中使用了setEndX来演示这一点。你可能需要做一些数学运算,同时使用setEndX和setEndY来获得你想要的结果
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Line;
import javafx.stage.Stage;
public class LineChartSample extends Application {
@Override public void start(Stage stage) {
Pane pane = new Pane();
Scene scene = new Scene(pane, 500, 500);
Line line = new Line(0, 200, 500, 200);
line.setStrokeWidth(2);
line.setStroke(Color.RED);
pane.getChildren().add(line);
// Rectangle clipRect = new Rectangle(line.getBoundsInParent().getWidth(), line.getBoundsInParent().getHeight());
// line.setClip(clipRect);
line.setOnMouseClicked((event)->{
line.setEndX(line.getBoundsInLocal().getWidth() - 100);
});
stage.setWidth(700);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
如果剪辑真的是你想要做的,你没有告诉我们你真正的用例,我仍然倾向于使用一个解决方案,塞德里克已经在他的代码中展示了这个解决方案,但出于某种原因注释掉了。每个形状都有一个setClip方法,为什么不使用它呢
import javafx.application.Application;
import javafx.geometry.Bounds;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Line;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
public class LineChartSample extends Application {
int clickCount = 0;
@Override public void start(Stage stage) {
Pane pane = new Pane();
Scene scene = new Scene(pane, 500, 500);
Line line = new Line(0, 200, 500, 200);
line.setStrokeWidth(2);
line.setStroke(Color.RED);
Bounds b = line.getBoundsInParent();
System.out.println(b);
pane.getChildren().add(line);
pane.setOnMouseClicked((event)->{
++clickCount;
double d = clickCount*20.0;
Rectangle clipRect = new Rectangle(b.getMinX() + d, b.getMinY(), b.getWidth() - 2*d, b.getHeight());
line.setClip(clipRect);
});
stage.setWidth(700);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
你为什么不画两条线0200到200200和400200到500200?可能是