Java 动画跳到右侧
我正忙着学习一些简单的MVC模型,有一件事我想不出来。。当我运行动画时,圆会向右跳一点(似乎是半径的一半) 以下是我的四节课: 模型:Java 动画跳到右侧,java,animation,javafx,Java,Animation,Javafx,我正忙着学习一些简单的MVC模型,有一件事我想不出来。。当我运行动画时,圆会向右跳一点(似乎是半径的一半) 以下是我的四节课: 模型: public class Model { private int radius; private int xAs; private int yAs; public Model(int xAs, int yAs, int radius){ this.xAs = xAs; this.yAs = yAs
public class Model {
private int radius;
private int xAs;
private int yAs;
public Model(int xAs, int yAs, int radius){
this.xAs = xAs;
this.yAs = yAs;
this.radius = radius;
}
public int getRadius(){
return radius;
}
public void setRadius(int radius){
this.radius = radius;
}
public int getXAs(){
return xAs;
}
public void setXAs(int xAs){
this.xAs = xAs;
}
public int getYAs(){
return yAs;
}
public void setYAs(int yAs){
this.yAs = yAs;
}
}
观点:
import javafx.scene.control.Button;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
public class View extends Pane{
private Circle bal;
private Button start;
private Button stop;
private Model model;
public View(Model model){
this.model = model;
createBal();
this.getChildren().add(bal);
start = new Button("Start");
start.setMinWidth(75);
stop = new Button("Stop");
stop.setMinWidth(75);
}
public void createBal(){
bal = new Circle();
bal.setRadius(model.getRadius());
bal.setCenterX(model.getXAs()+bal.getRadius()/2);
bal.setCenterY(model.getYAs());
bal.setFill(Color.RED);
}
public Button getStart(){
return this.start;
}
public Button getStop(){
return this.stop;
}
public void adjust(){
bal.relocate(model.getXAs(), model.getYAs());
}
}
控制员:
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.util.Duration;
public class Controller {
View view;
Model model;
Timeline animatie;
private int yAsPositie = 1;
public Controller(View view, Model model){
this.view = view;
this.model = model;
animatie = new Timeline(new KeyFrame(Duration.millis(10), e -> beweegBal()));
animatie.setCycleCount(Timeline.INDEFINITE);
view.getStart().setOnAction(e -> animatie.play());
view.getStop().setOnAction(e -> animatie.stop());
}
public void beweegBal(){
model.setYAs(model.getYAs() + yAsPositie);
view.adjust();
}
}
启动(应用程序)
如果你运行它,你会注意到它向右跳了一点,在上面停留了几个小时。看起来你正在将
model.xAs
解释为球的左边缘的x坐标,因为你在重新定位它时使用它作为x坐标。在这种情况下,您肯定需要使用
bal.setCenterX(model.getXAs()+bal.getRadius());
因为圆的半径是从中心到边缘的距离。Hi Nerotix,
bal.setCenterX(model.getXAs()+bal.getRadius());