Java语言程序设计 第十四章 （14.26、14.27、14.28、14.29）

//继承Pane的时钟面板
import java.util.Calendar;
import java.util.GregorianCalendar;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.text.Text;

public class ClockPane extends Pane
{
private int hour;
private int minute;
private int second;

private double w = 250, h = 250;

public ClockPane()
{
setCurrentTime();
}

public ClockPane(int hour, int minute, int second)
{
this.hour = hour;
this.minute = minute;
this.second = second;
paintClock();
}

public int getHour()
{
return hour;
}

public void setHour(int hour)
{
this.hour = hour;
paintClock();
}

public int getMinute()
{
return minute;
}

public void setMinute(int minute)
{
this.minute = minute;
paintClock();
}

public int getSecond()
{
return second;
}

public void setSecond(int second)
{
this.second = second;
paintClock();
}

public double getW()
{
return w;
}

public void setW(double w)
{
this.w = w;
paintClock();
}

public double getH()
{
return h;
}

public void setH(double h)
{
this.h = h;
paintClock();
}

public void setCurrentTime()
{
Calendar calendar = new GregorianCalendar();
this.hour = calendar.get(Calendar.HOUR_OF_DAY);
this.minute = calendar.get(Calendar.MINUTE);
this.second = calendar.get(Calendar.SECOND);

paintClock();
}
//画指针
public void paintClock()
{
double clockRadius = Math.min(w, h) * 0.8 * 0.5;
double centerX = w / 2;
double centerY = h / 2;

Circle circle = new Circle(centerX, centerY, clockRadius);
circle.setFill(Color.WHITE);
circle.setStroke(Color.BLACK);
Text t1 = new Text(centerX - 5, centerY - clockRadius + 12, "12");
Text t2 = new Text(centerX - clockRadius + 3, centerY + 5, "9");
Text t3 = new Text(centerX + clockRadius - 10, centerY + 3, "3");
Text t4 = new Text(centerX - 3, centerY + clockRadius - 3, "6");

double sLength = clockRadius * 0.8;
double secondX = centerX + sLength * Math.sin(second * (2 * Math.PI / 60));
double secondY = centerY - sLength * Math.cos(second * (2 * Math.PI / 60));
Line sLine = new Line(centerX, centerY, secondX, secondY);
sLine.setStroke(Color.RED);

double mLength = clockRadius * 0.65;
double minuteX = centerX + mLength * Math.sin(minute * (2 * Math.PI / 60));
double minuteY = centerY - mLength * Math.cos(minute * (2 * Math.PI / 60));
Line mLine = new Line(centerX, centerY, minuteX, minuteY);
mLine.setStroke(Color.BLUE);

double hLength = clockRadius * 0.5;
double hourX = centerX + hLength * Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
double hourY = centerY - hLength * Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
Line hLine = new Line(centerX, centerY, hourX, hourY);
hLine.setStroke(Color.GREEN);

getChildren().clear();
getChildren().addAll(circle, t1, t2, t3, t4, sLine, mLine, hLine);
}
}

//使用ClockPane显示给定的两个表盘
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;

public class ShowTwoClock extends Application
{
@Override
public void start(Stage primaryStage)
{
Pane pane = new Pane();
ClockPane clock1 = new ClockPane(4, 20, 45);
pane.getChildren().add(clock1);
Scene scene1 = new Scene(pane, 250, 250);
primaryStage.setTitle("Clock1");
primaryStage.setScene(scene1);
primaryStage.show();

Stage stage = new Stage();
Pane pane2 = new Pane();
ClockPane clock2 = new ClockPane(22, 46, 15);
pane2.getChildren().add(clock2);
Scene scene2 = new Scene(pane2, 250, 250);
stage.setTitle("Clock2");
stage.setScene(scene2);
stage.show();
}
}

//画一个详细的钟

import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Line;
import javafx.scene.text.Text;
import javafx.scene.shape.Circle;
import java.util.Calendar;
import java.util.GregorianCalendar;

public class MoreClockPane extends Pane
{
private int hour;
private int minute;
private int second;

private double width = 250, height = 250;
//默认为当前时间
public MoreClockPane()
{
Calendar time = new GregorianCalendar();
this.hour = time.get(Calendar.HOUR_OF_DAY);
this.minute = time.get(Calendar.MINUTE);
this.second = time.get(Calendar.SECOND);
paintClock();
}

public MoreClockPane(int hour, int minute, int second)
{
this.hour = hour;
this.minute = minute;
this.second =  second;
paintClock();
}

public void setHour(int hour)
{
this.hour = hour;
paintClock();
}
public int getHour()
{
return hour;
}

public void setMinute(int minute)
{
this.minute = minute;
paintClock();
}

public int getMinute()
{
return minute;
}

public void setSecond(int second)
{
this.second = second;
paintClock();
}

public int getSecond()
{
return second;
}

public void paintClock()
{
getChildren().clear();
double centerX = width / 2.0;
double centerY = height / 2.0;
double radius = Math.min(width, height) * 0.4;
Circle clock = new Circle(centerX, centerY, radius);
clock.setFill(Color.WHITE);
clock.setStroke(Color.BLACK);
super.getChildren().add(clock);

//画秒针刻度线
double sDegree = 2 * Math.PI / 60;
for (int i = 0; i < 60; i++)
{
if (i % 5 != 0)
{
double sxs = centerX + radius * Math.sin(sDegree * i) * 0.95;
double sys = centerY - radius * Math.cos(sDegree * i) * 0.95;
double sxe = centerX + radius * Math.sin(sDegree * i);
double sye = centerY - radius * Math.cos(sDegree * i);
Line line = new Line(sxs, sys, sxe, sye);
super.getChildren().add(line);
}
}
//画分针刻度线，标小时
double mDegree = 2 * Math.PI / 12;
for (int i = 1; i <= 12; i++)
{
double mxs = centerX + radius * Math.sin(mDegree * i) * 0.90;
double mys = centerY - radius * Math.cos(mDegree * i) * 0.90;
double mxe = centerX + radius * Math.sin(mDegree * i);
double mye = centerY - radius * Math.cos(mDegree * i);
double txs = centerX + radius * Math.sin(mDegree * i) * 0.80;
double tys = centerY - radius * Math.cos(mDegree * i) * 0.80  ;
Line line = new Line(mxs, mys, mxe, mye);
Text hText = new Text(txs,tys, i + "");
super.getChildren().addAll(line, hText);
}

//画指针
double sL = radius * 0.8;
double secondX = centerX + sL * Math.sin(second * 2 * Math.PI / 60);
double secondY = centerY - sL * Math.cos(second * 2 * Math.PI / 60);
Line secondLine = new Line(centerX, centerY, secondX, secondY);
secondLine.setStroke(Color.RED);

double mL = radius * 0.65;
double minuteX = centerX + mL * Math.sin(minute * 2 * Math.PI / 60);
double minuteY = centerY - mL * Math.cos(minute * 2 * Math.PI / 60);
Line minuteLine = new Line(centerX, centerY, minuteX, minuteY);
minuteLine.setStroke(Color.BLUE);

double hL = radius * 0.6;
//注意此处 minute 要除以60.0 不是60，还有时钟除以 12
double hourX = centerX + hL * Math.sin((hour + minute / 60.0) * (2 * Math.PI / 12));
double hourY = centerY - hL * Math.cos((hour + minute / 60.0) * (2 * Math.PI / 12));
Line hourLine = new Line(centerX, centerY, hourX, hourY);
hourLine.setStroke(Color.GREEN);

super.getChildren().addAll(secondLine, minuteLine, hourLine);
}

//返回数字时间
public static String getTime()
{
Calendar time = new GregorianCalendar();
return time.get(Calendar.HOUR_OF_DAY) + ":" + time.get(Calendar.MINUTE) + ":" + time.get(Calendar.SECOND);
}
}

//测试类展示MoreClockPane

import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.geometry.Insets;
import javafx.geometry.Pos;

public class ShowClockPane extends Application
{
@Override
public void start(Stage primaryStage)
{
MoreClockPane clock = new MoreClockPane();
Label time = new Label(MoreClockPane.getTime());

BorderPane pane = new BorderPane();
pane.setCenter(clock);
pane.setBottom(time);
BorderPane.setAlignment(time, Pos.TOP_CENTER);
//设置某一的节点的在其所在面板的相对位置，setAlignment是BorderPane的静态方法

Scene scene = new Scene(pane, 250, 250);
primaryStage.setTitle("Clock");
primaryStage.setScene(scene);
primaryStage.show();
}
}

//新的显示指针表盘的面板
//添加时针分针秒针是否可见

import java.util.Calendar;
import java.util.GregorianCalendar;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.text.Text;

public class NewClockPane extends Pane
{
private int hour;
private int minute;
private int second;
private boolean hourHandVisible;
private boolean minuteHandVisible;
private boolean secondHandVisible;

private double w = 250, h = 250;

public NewClockPane()
{
hourHandVisible = true;
minuteHandVisible = true;
secondHandVisible = true;
setCurrentTime();
}

public NewClockPane(int hour, int minute, int second)
{
hourHandVisible = true;
minuteHandVisible = true;
secondHandVisible = true;
this.hour = hour;
this.minute = minute;
this.second = second;
paintClock();
}

public void setHourHandVisible(boolean visible)
{
this.hourHandVisible = visible;
paintClock();
}

public void setMinuteHandVisible(boolean visible)
{
this.minuteHandVisible = visible;
paintClock();
}

public void setSecondHandVisible(boolean visible)
{
this.secondHandVisible = visible;
paintClock();
}

public int getHour()
{
return hour;
}

public void setHour(int hour)
{
this.hour = hour;
paintClock();
}

public int getMinute()
{
return minute;
}

public void setMinute(int minute)
{
this.minute = minute;
paintClock();
}

public int getSecond()
{
return second;
}

public void setSecond(int second)
{
this.second = second;
paintClock();
}

public double getW()
{
return w;
}

public void setW(double w)
{
this.w = w;
paintClock();
}

public double getH()
{
return h;
}

public void setH(double h)
{
this.h = h;
paintClock();
}

public void setCurrentTime()
{
Calendar calendar = new GregorianCalendar();
this.hour = calendar.get(Calendar.HOUR_OF_DAY);
this.minute = calendar.get(Calendar.MINUTE);
this.second = calendar.get(Calendar.SECOND);

paintClock();
}

public void paintClock()
{
double clockRadius = Math.min(w, h) * 0.8 * 0.5;
double centerX = w / 2;
double centerY = h / 2;

Circle circle = new Circle(centerX, centerY, clockRadius);
circle.setFill(Color.WHITE);
circle.setStroke(Color.BLACK);
Text t1 = new Text(centerX - 5, centerY - clockRadius + 12, "12");
Text t2 = new Text(centerX - clockRadius + 3, centerY + 5, "9");
Text t3 = new Text(centerX + clockRadius - 10, centerY + 3, "3");
Text t4 = new Text(centerX - 3, centerY + clockRadius - 3, "6");

double sLength = clockRadius * 0.8;
double secondX = centerX + sLength * Math.sin(second * (2 * Math.PI / 60));
double secondY = centerY - sLength * Math.cos(second * (2 * Math.PI / 60));
Line sLine = new Line(centerX, centerY, secondX, secondY);
sLine.setStroke(Color.RED);

double mLength = clockRadius * 0.65;
double minuteX = centerX + mLength * Math.sin(minute * (2 * Math.PI / 60));
double minuteY = centerY - mLength * Math.cos(minute * (2 * Math.PI / 60));
Line mLine = new Line(centerX, centerY, minuteX, minuteY);
mLine.setStroke(Color.BLUE);

double hLength = clockRadius * 0.5;
double hourX = centerX + hLength * Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
double hourY = centerY - hLength * Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
Line hLine = new Line(centerX, centerY, hourX, hourY);
hLine.setStroke(Color.GREEN);

getChildren().clear();
getChildren().addAll(circle, t1, t2, t3, t4);

if (hourHandVisible)
{
getChildren().add(hLine);
}

if (minuteHandVisible)
{
getChildren().add(mLine);
}

if (secondHandVisible)
{
getChildren().add(sLine);
}
}
}

//测试新的时钟面板

import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.geometry.Pos;
import java.util.Random;

public class TestNewClockPane extends Application
{
@Override
public void start(Stage primaryStage)
{
BorderPane pane = new BorderPane();
NewClockPane clock = new NewClockPane();
Random random = new Random();
int hour = random.nextInt(12);
int minuteChoose = random.nextInt(2);
int minute;
if (minuteChoose == 0)
{
minute = 0;
}
else
minute = 30;
clock.setHour(hour);
clock.setMinute(minute);
clock.setSecondHandVisible(false);
String timeString = clock.getHour() + " : " + clock.getMinute();
Label lblCurrentTime = new Label(timeString);

pane.setCenter(clock);
pane.setBottom(lblCurrentTime);
BorderPane.setAlignment(lblCurrentTime, Pos.TOP_CENTER);

Scene scene = new Scene(pane, 250, 250);
primaryStage.setTitle("Clock");
primaryStage.setScene(scene);
primaryStage.show();
}
}

//画分豆机
//采用的是等边三角形划分各个点
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Polyline;
import javafx.scene.layout.Pane;
import javafx.scene.layout.BorderPane;
import javafx.geometry.Insets;
import javafx.collections.ObservableList;
import javafx.scene.shape.Line;

public class DrawBeanDividing extends Application
{
@Override
public void start(Stage primaryStage)
{
double width = 100;
Pane pane = new Pane();
drawInside(pane, width);
drawOutside(pane, width);

BorderPane borderPane = new BorderPane();
borderPane.setPadding(new Insets(20, 20, 20, 20));
borderPane.setCenter(pane);
Scene scene = new Scene(borderPane);
primaryStage.setTitle("DrawBeanDividing");
primaryStage.setScene(scene);
primaryStage.show();
}

//画分豆机的内部
public void drawInside(Pane pane, double width)
{
for (int i = 1; i <= 7; i++)
{
double firstCenterX = width / 3 + width - (i - 1) * width / 6;
double firstCenterY = 100 + (i - 1) * Math.sqrt(3) / 6 * width;
for (int j = 0; j < i; j++)
{
double centerX = firstCenterX + 2 * j * width / 6;
double centerY = firstCenterY;
Circle circle = new Circle(centerX, centerY, 5);
pane.getChildren().add(circle);
if (i == 7)
{
Line line = new Line(centerX, centerY, centerX, centerY + 100);
pane.getChildren().add(line);
}
}
}
}

//画分豆机的外部
public void drawOutside(Pane pane, double width)
{
Polyline line = new Polyline();
pane.getChildren().add(line);
ObservableList<Double> list = line.getPoints();

//1
list.add(width / 3 + width - width / 6);
list.add(0.0);
//2
list.add(width / 3 + width - width / 6);
list.add(100.0);
//3
list.add(0.0);
list.add(100 +  Math.sqrt(3)* width);
//4
list.add(0.0);
list.add(100 +  Math.sqrt(3)* width + 100);
//5
list.add(width + width + width / 3 * 2);
list.add(100 +  Math.sqrt(3)* width + 100);
//6
list.add(width + width + width / 3 * 2);
list.add(100 +  Math.sqrt(3)* width);
//7
list.add(width / 3 + width - width / 6 + width / 3);
list.add(100.0);
//8
list.add(width / 3 + width - width / 6 + width / 3);
list.add(0.0);
}
}