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Commit 6c6acec

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Merge pull request #73 from HarryDulaney/new-solutions
Complete Chapter 14*
2 parents dbd2164 + c9a61b4 commit 6c6acec

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5 files changed

+451
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‎README.md

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@@ -123,10 +123,7 @@ Indicates 100% completion of all exercises for that chapter
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<img src="./resources/images/icons8-complete-26.png" alt="complete-check-img"/>
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</li><br>
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<li><a href="https://github.com/HarryDulaney/intro-to-java-programming/tree/master/ch_14"><strong>Chapter
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14</strong></a> - JavaFx Basics
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<h6>
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Exercises Needed: 27, 29
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</h6>
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14</strong></a> - JavaFx Basics <img src="./resources/images/icons8-complete-26.png" alt="complete-check-img"/>
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</li><br>
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<li><a href="https://github.com/HarryDulaney/intro-to-java-programming/tree/master/ch_15"><strong>Chapter 15
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</strong></a> - Event-Driven Programming and Animations

‎ch_14/Exercise14_26.java

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@@ -44,120 +44,119 @@ public void start(Stage primaryStage) {
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}
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public static void main(String[] args) {
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launch(args);
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}
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}
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class ClockPane extends Pane {
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private int hour;
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private int minute;
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private int second;
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private double w = 250, h = 250;
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/**
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* Construct a default clock with the current time
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* ClockPane is a Pane that displays a clock.
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*/
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public ClockPane() {
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setCurrentTime();
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}
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public ClockPane(int hour, int minute, int second) {
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this.hour = hour;
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this.minute = minute;
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this.second = second;
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paintClock();
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}
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public int getHour() {
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return hour;
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}
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public void setHour(int hour) {
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this.hour = hour;
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paintClock();
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}
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public int getMinute() {
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return minute;
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}
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public void setMinute(int minute) {
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this.minute = minute;
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paintClock();
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}
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public int getSecond() {
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return second;
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}
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public void setSecond(int second) {
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this.second = second;
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paintClock();
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}
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public double getW() {
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return w;
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}
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public void setW(double w) {
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this.w = w;
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paintClock();
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}
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public double getH() {
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return h;
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}
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public void setH(double h) {
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this.h = h;
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paintClock();
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}
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public void setCurrentTime() {
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Calendar calendar = new GregorianCalendar();
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this.hour = calendar.get(Calendar.HOUR_OF_DAY);
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this.minute = calendar.get(Calendar.MINUTE);
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this.second = calendar.get(Calendar.SECOND);
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paintClock(); // Repaint the clock
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}
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protected void paintClock() {
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double clockRadius = Math.min(w, h) * 0.8 * 0.5;
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double centerX = w / 2;
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double centerY = h / 2;
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Circle circle = new Circle(centerX, centerY, clockRadius);
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circle.setFill(Color.WHITE);
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circle.setStroke(Color.BLACK);
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Text t1 = new Text(centerX - 5, centerY - clockRadius + 12, "12");
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Text t2 = new Text(centerX - clockRadius + 3, centerY + 5, "9");
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Text t3 = new Text(centerX + clockRadius - 10, centerY + 3, "3");
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Text t4 = new Text(centerX - 3, centerY + clockRadius - 3, "6");
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double sLength = clockRadius * 0.8;
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double secondX = centerX + sLength *
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Math.sin(second * (2 * Math.PI / 60));
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double secondY = centerY - sLength *
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Math.cos(second * (2 * Math.PI / 60));
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Line sLine = new Line(centerX, centerY, secondX, secondY);
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sLine.setStroke(Color.RED);
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double mLength = clockRadius * 0.65;
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double xMinute = centerX + mLength *
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Math.sin(minute * (2 * Math.PI / 60));
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double minuteY = centerY - mLength *
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Math.cos(minute * (2 * Math.PI / 60));
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Line mLine = new Line(centerX, centerY, xMinute, minuteY);
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mLine.setStroke(Color.BLUE);
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double hLength = clockRadius * 0.5;
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double hourX = centerX + hLength *
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Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
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double hourY = centerY - hLength *
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Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
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Line hLine = new Line(centerX, centerY, hourX, hourY);
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hLine.setStroke(Color.GREEN);
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getChildren().clear();
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getChildren().addAll(circle, t1, t2, t3, t4, sLine, mLine, hLine);
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class ClockPane extends Pane {
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private int hour;
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private int minute;
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private int second;
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private double w = 250, h = 250;
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/**
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* Construct a default clock with the current time
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*/
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public ClockPane() {
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setCurrentTime();
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}
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public ClockPane(int hour, int minute, int second) {
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this.hour = hour;
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this.minute = minute;
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this.second = second;
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paintClock();
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}
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public int getHour() {
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return hour;
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}
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public void setHour(int hour) {
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this.hour = hour;
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paintClock();
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}
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public int getMinute() {
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return minute;
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}
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public void setMinute(int minute) {
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this.minute = minute;
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paintClock();
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}
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public int getSecond() {
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return second;
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}
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public void setSecond(int second) {
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this.second = second;
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paintClock();
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}
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public double getW() {
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return w;
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}
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public void setW(double w) {
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this.w = w;
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paintClock();
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}
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public double getH() {
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return h;
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}
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public void setH(double h) {
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this.h = h;
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paintClock();
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}
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public void setCurrentTime() {
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Calendar calendar = new GregorianCalendar();
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this.hour = calendar.get(Calendar.HOUR_OF_DAY);
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this.minute = calendar.get(Calendar.MINUTE);
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this.second = calendar.get(Calendar.SECOND);
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paintClock(); // Repaint the clock
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}
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protected void paintClock() {
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double clockRadius = Math.min(w, h) * 0.8 * 0.5;
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double centerX = w / 2;
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double centerY = h / 2;
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Circle circle = new Circle(centerX, centerY, clockRadius);
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circle.setFill(Color.WHITE);
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circle.setStroke(Color.BLACK);
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Text t1 = new Text(centerX - 5, centerY - clockRadius + 12, "12");
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Text t2 = new Text(centerX - clockRadius + 3, centerY + 5, "9");
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Text t3 = new Text(centerX + clockRadius - 10, centerY + 3, "3");
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Text t4 = new Text(centerX - 3, centerY + clockRadius - 3, "6");
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double sLength = clockRadius * 0.8;
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double secondX = centerX + sLength *
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Math.sin(second * (2 * Math.PI / 60));
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double secondY = centerY - sLength *
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Math.cos(second * (2 * Math.PI / 60));
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Line sLine = new Line(centerX, centerY, secondX, secondY);
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sLine.setStroke(Color.RED);
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double mLength = clockRadius * 0.65;
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double xMinute = centerX + mLength *
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Math.sin(minute * (2 * Math.PI / 60));
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double minuteY = centerY - mLength *
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Math.cos(minute * (2 * Math.PI / 60));
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Line mLine = new Line(centerX, centerY, xMinute, minuteY);
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mLine.setStroke(Color.BLUE);
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double hLength = clockRadius * 0.5;
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double hourX = centerX + hLength *
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Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
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double hourY = centerY - hLength *
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Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI / 12));
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Line hLine = new Line(centerX, centerY, hourX, hourY);
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hLine.setStroke(Color.GREEN);
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getChildren().clear();
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getChildren().addAll(circle, t1, t2, t3, t4, sLine, mLine, hLine);
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}
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}
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}
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}

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