드로잉을 할 때마다 반사를 켜고 모든 것을 그려야합니다. 그런 다음 반향을 해제하고 현재 그려야 할 포인트가 마우스 커서 아래에 나타나지 않습니다. 이상한 것은 때로는 잘 작동하고 몇 번이나 반사를 켜고 끄면 버그가 발생한다는 것입니다. 나는 그 뒤에 어떤 이유가 있는지 전혀 모른다. 여기에 코드가 있습니다. 제가 도와 주시면 매우 감사드립니다. 잘못된 위치에 드로잉 포인트가 있습니다
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Iterator;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
//3 inner classes because if this code is part of a bigger problem, these classes will not be used anywhere else and need to be encapsulated
public class CWTEST extends JFrame{
public CWTEST(String title){
super(title);
}
public void initialiseGUI(){
Container mainPanel = this.getContentPane();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
//make the window as big as the screen without covering the windows taskbar
this.setBounds(0, 0, screenSize.width, screenSize.height-40);
//set up the displayPanel where the drawing is done
mainPanel.setLayout(new BorderLayout());
DrawingPanel displayPanel = new DrawingPanel();
mainPanel.add(displayPanel, BorderLayout.CENTER);
//set up the controlPanel where the user changes the drawing options
JPanel controlPanel = new JPanel();
mainPanel.add(controlPanel, BorderLayout.SOUTH);
controlPanel.setLayout(new FlowLayout());
controlPanel.setBorder(BorderFactory.createLineBorder(new java.awt.Color(0, 255, 0)));
JLabel reflectPointsLabel = new JLabel("reflect points");
controlPanel.add(reflectPointsLabel);
JCheckBox reflectPointsBox = new JCheckBox();
reflectPointsBox.addItemListener(new ItemListener(){
@Override
public void itemStateChanged(ItemEvent e) {
if (e.getStateChange() == ItemEvent.SELECTED){
displayPanel.reflectPoints = true;
}else{
displayPanel.reflectPoints = false;
}
}
});
controlPanel.add(reflectPointsBox);
reflectPointsBox.setSelected(false);
this.setVisible(true);
//once the frame is visible we can get the real size of the drawing panel and create a buffered image that matches it
displayPanel.buffImage = new BufferedImage(displayPanel.getWidth(), displayPanel.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
}
public class DrawingPanel extends JPanel{
//default drawing options
private double circleDiameter = 5;
private Color color = Color.BLUE;
private boolean showSectors;
private boolean reflectPoints;
private int numOfSectors = 12;
//list of points to be drawn
private ArrayList<MyPoint> pointsList;
//buffered image on which the drawing is done and then copied to the JPanel
private BufferedImage buffImage;
public DrawingPanel(){
this.setBackground(Color.BLACK);
DrawingListener listener = new DrawingListener(this);
this.addMouseListener(listener);
this.addMouseMotionListener(listener);
this.addComponentListener(listener);
pointsList = new ArrayList<MyPoint>();
}
public void paintComponent(Graphics g){
super.paintComponent(g);
this.drawBuffImage();
//copy what's drawn on the buffered image to the JPanel
g.drawImage(buffImage, 0,0, null);
}
public void drawBuffImage(){
Graphics2D g2d = buffImage.createGraphics();
g2d.setColor(Color.WHITE);
//if there are more tan 1 sectors - draw lines to separate them
if(showSectors && numOfSectors > 1){
Line2D line = new Line2D.Double(this.getWidth()/2,0,this.getWidth()/2,this.getHeight()/2);
//draw half a line every time and rotate the next according to the number of sectors
for(int w = 0; w < numOfSectors; w++){
g2d.draw(line);
g2d.rotate(Math.toRadians((double) 360/numOfSectors), this.getWidth()/2, this.getHeight()/2);
}
}
//draw each point in the list
for(int i = 0; i < pointsList.size(); i++){
MyPoint point = pointsList.get(i);
g2d.setColor(point.getPointColor());
Ellipse2D circle = new Ellipse2D.Double(point.getX(), point.getY(), point.getPointDiameter(), point.getPointDiameter());
//draw the point once in each sector
for(int j = 0; j < numOfSectors; j++){
g2d.fill(circle);
g2d.rotate(Math.toRadians(((double) 360/numOfSectors)), this.getWidth()/2, this.getHeight()/2);
}
//if point should be reflected, draw its reflection in each sector
if(point.isReflected()){
g2d.rotate(Math.toRadians((double) 360/(numOfSectors*2)), this.getWidth()/2, this.getHeight()/2);
g2d.fill(circle);
for(int t = 1; t < numOfSectors; t++){
g2d.rotate(Math.toRadians((double) 360/numOfSectors), this.getWidth()/2, this.getHeight()/2);
g2d.fill(circle);
}
}
}
g2d.dispose();
}
public void wipeScreen(){
//wipe everything by covering it with black
Graphics g = buffImage.createGraphics();
g.setColor(Color.BLACK);
g.fillRect(0,0,buffImage.getWidth(),buffImage.getHeight());
g.dispose();
}
public void addPoint(MyPoint p){
pointsList.add(p);
}
public void setColor(Color color){
this.color = color;
}
public void setCircleDiameter(double circleDiameter){
this.circleDiameter = circleDiameter;
}
}
public class DrawingListener extends MouseAdapter implements ComponentListener{
//the panel on which the user draws
private DrawingPanel dPanel;
public DrawingListener(DrawingPanel dPanel){
this.dPanel = dPanel;
}
//add a point to the arraylist every time the user draws, and draw
public void mousePressed(MouseEvent e) {
dPanel.addPoint(new MyPoint(e.getX(), e.getY(), dPanel.color, dPanel.circleDiameter, dPanel.reflectPoints));
dPanel.repaint();
}
public void mouseDragged(MouseEvent e) {
dPanel.addPoint(new MyPoint(e.getX(), e.getY(), dPanel.color, dPanel.circleDiameter, dPanel.reflectPoints));
dPanel.repaint();
}
@Override
public void componentResized(ComponentEvent e) {
//whenever component is resized, wipe the screen
//then the system-triggered repaint occurs and the result is that by making the window smaller, the user zooms in
dPanel.wipeScreen();
}
public void componentHidden(ComponentEvent arg0) {}
public void componentMoved(ComponentEvent arg0) {}
public void componentShown(ComponentEvent arg0) {}
}
//each point drawn is an object of the class
public class MyPoint extends Point{
private Color pointColor;
private double pointDiameter;
private boolean reflected;
public MyPoint(int x, int y, Color c, double pointDiameter, boolean reflected){
super(x,y);
this.pointColor = c;
this.pointDiameter = pointDiameter;
this.reflected = reflected;
}
public Color getPointColor(){
return this.pointColor;
}
public double getPointDiameter(){
return this.pointDiameter;
}
public boolean isReflected(){
return this.reflected;
}
}
}
public class MainTest {
public static void main(String[] args){
CWTEST frame = new CWTEST("Digital Doily");
frame.initialiseGUI();
}
}
편집 상자가 내가 12 포인트를 획득 쳤다되지
- 가장 안쪽 원. 그런 다음 상자에 체크하고 24 점 (원본 12 점, 반사 12 점) - 두 번째 원 (리플렉션 있음)을 얻습니다. 그런 다음 상자를 풀어서 12 점을 얻습니다. 그러나 원이 제 1 원과 같은 동일한 위치에 있지만 이전 원에서 12 개의 반사 점 대신 그려집니다. 녹색 점은 반사 된 점의 예입니다. 두 점 사이의 점입니다. 빨간 점들은 마우스 커서가 모든 그림에있는 곳입니다. 세 번째 원을 만들면 반사가 해제되고 커서 아래에 점이 그려지지 않습니다.
* "그러나 반사음을 끄고 내가 그린 점은 마우스 커서 아래에 나타나지 않습니다."* 설명 된 동작은 보이지 않지만 나도 체크 박스가 체크 된 시점과 그렇지 않은 시점 사이의 차이점을 확인하십시오. –
@Andrew Thompson 나는 당신이 이해하도록 돕기 위해 그것을 편집했다. 도움이되기를 바랍니다. 때로는 버그를 가져 오기 위해 반사를 두 번 켜고 끌 필요가 있습니다. –