JavaFX 做鬼脸

Question

我正在开发一个 Java FX 程序，我必须在其中制作表情符号。我已经做了一个带边框的圆圈，眼睛和皱眉。我的眉毛有问题。我有一个眉毛，但我似乎无法让另一侧的眉毛与脸的另一侧相匹配。这是我的第一个 JavaFX 程序，所以我的知识非常有限，而且我的教科书也不是很好。任何事情都会有所帮助。眉毛是line1和line2。

  package application;

  import javafx.application.Application;
  import javafx.scene.Group;
  import javafx.scene.Scene;
  import javafx.stage.Stage;
  import javafx.scene.paint.Color;
  import javafx.scene.shape.Arc;
  import javafx.scene.shape.ArcType;
  import javafx.scene.shape.Circle;
  import javafx.scene.shape.Line;

public class TracyAssignment2Chap14 extends Application {

@Override
public void start(Stage primaryStage) {
try {
    Circle circle = new Circle();
    Circle circle2 = new Circle();
    Circle circle3 = new Circle();
    circle.setCenterX(220.0);
    circle.setCenterY(220.0);
    circle.setRadius(190.0);
    circle.setFill(Color.YELLOW);
    circle.setStrokeWidth(15.0);
    circle.setStroke(Color.BLACK);
    circle2.setCenterX(300.0);
    circle2.setCenterY(215.0);
    circle2.setRadius(25.0);
    circle2.setFill(Color.BLACK);
    circle3.setCenterX(150.0);
    circle3.setCenterY(215.0);
    circle3.setRadius(25.0);
    circle3.setFill(Color.BLACK);
    Arc arc = new Arc(220,310,80,60,0,180);
    arc.setFill(null);
    arc.setStroke(Color.BLACK);
    arc.setStrokeWidth(15.0);
    arc.setType(ArcType.OPEN);
    Line line1= new Line();
    line1.setStartX(180.0);
    line1.setStartY(180.0);
    line1.setEndX(150.0);
    line1.setEndY(160.0);
    line1.setStrokeWidth(15.0);
    line1.setStroke(Color.BLACK);
    Line line2 = new Line ();
    line2.setStartX(200.0);
    line2.setStartY(180.0);
    line2.setEndX(270.0);
    line2.setEndY(160.0);
    line2.setStrokeWidth(15.0);
    line2.setStroke(Color.BLACK);
    Group root = new Group(circle,circle2,circle3,arc,line1,line2);
    Scene scene = new Scene(root,450,450);
    primaryStage.setTitle("Emoji Assignment");
    scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
    //add the scene to the stage
    primaryStage.setScene(scene);
    //show the contents of the stage 
    primaryStage.show();
} catch(Exception e) {
    e.printStackTrace();
}

}



public static void main(String[] args) {
    launch(args);
}
}

Answer 1

你可以做的一件事就是把所有东西都放在脸的中心。我改变了你的一些变量，以便他们的角色是明确的。另外，你发现了什么错误？

示例代码：

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package javafxapplication34;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.paint.Color;
import javafx.scene.shape.Arc;
import javafx.scene.shape.ArcType;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;

public class TracyAssignment2Chap14 extends Application {

    @Override
    public void start(Stage primaryStage) {
        double faceCenterX = 220.0;
        double faceCenterY = 220.0;
        double eyeYFromFaceCenter = 5.0;
        double eyeXFromFaceCenter = 80.0;
        double eyeBrowStartYFromFaceCenter = 40.0;
        double eyeBrowStartXFromFaceCenter = 40.0;
        double eyeBrowEndYFromFaceCenter = 70.0;
        double eyeBrowEndXFromFaceCenter = 80.0;

        Circle face = new Circle();
        face.setCenterX(faceCenterX);
        face.setCenterY(faceCenterY);
        face.setRadius(190.0);
        face.setFill(Color.YELLOW);
        face.setStrokeWidth(15.0);
        face.setStroke(Color.BLACK);

        Circle leftEye = new Circle();
        leftEye.setCenterX(faceCenterX - eyeXFromFaceCenter);
        leftEye.setCenterY(faceCenterY - eyeYFromFaceCenter);
        leftEye.setRadius(25.0);
        leftEye.setFill(Color.BLACK);

        Circle rightEye = new Circle();
        rightEye.setCenterX(faceCenterX + eyeXFromFaceCenter);
        rightEye.setCenterY(faceCenterY - eyeYFromFaceCenter);
        rightEye.setRadius(25.0);
        rightEye.setFill(Color.BLACK);

        Line leftEyebrow = new Line();
        leftEyebrow.setStartX(faceCenterX - eyeBrowStartXFromFaceCenter);
        leftEyebrow.setStartY(faceCenterY - eyeBrowStartYFromFaceCenter);
        leftEyebrow.setEndX(faceCenterX - eyeBrowEndXFromFaceCenter);
        leftEyebrow.setEndY(faceCenterY - eyeBrowEndYFromFaceCenter);
        leftEyebrow.setStrokeWidth(15.0);
        leftEyebrow.setStroke(Color.BLACK);

        Line RightEyebrow = new Line();
        RightEyebrow.setStartX(faceCenterX + eyeBrowStartXFromFaceCenter);
        RightEyebrow.setStartY(faceCenterY - eyeBrowStartYFromFaceCenter);
        RightEyebrow.setEndX(faceCenterX + eyeBrowEndXFromFaceCenter);
        RightEyebrow.setEndY(faceCenterY - eyeBrowEndYFromFaceCenter);
        RightEyebrow.setStrokeWidth(15.0);
        RightEyebrow.setStroke(Color.BLACK);

        Arc mouth = new Arc(faceCenterX, faceCenterY + 90, 80, 60, 0, 180);//(220,310,80,60,0,180);
        mouth.setFill(null);
        mouth.setStroke(Color.BLACK);
        mouth.setStrokeWidth(15.0);
        mouth.setType(ArcType.OPEN);

//   
        Group root = new Group(face, leftEye, rightEye, leftEyebrow, RightEyebrow, mouth);
        Scene scene = new Scene(root, 450, 450);
        primaryStage.setTitle("Emoji Assignment");
        ///scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
        //add the scene to the stage
        primaryStage.setScene(scene);
        //show the contents of the stage 
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}