OpenCV_FillPolyWithMouseControl.java
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import org.opencv.core.MatOfPoint;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Scalar;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class OpenCV_FillPolyWithMouseControl {
static{System.loadLibrary(Core.NATIVE_LIBRARY_NAME);}
private JFrame frmjavaSwing;
public List<Point> allPoint = new ArrayList<>();
/**
* Launch the application.
*/
public static void main(String[] args){
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try{
OpenCV_FillPolyWithMouseControl window = new OpenCV_FillPolyWithMouseControl();
window.frmjavaSwing.setVisible(true);
}catch (Exception e){
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public OpenCV_FillPolyWithMouseControl() {
initialize();
}
/**
* Init the contents of the frame.
*/
private void initialize() {
final Mat source = Imgcodecs.imread(
"D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\DSC_0625.jpg ");
BufferedImage image=matToBufferedImage(source);
frmjavaSwing = new JFrame();
frmjavaSwing.setTitle("Practicing mouse with polygon filling");
frmjavaSwing.setBounds(100, 100, 491, 425);
frmjavaSwing.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmjavaSwing.getContentPane().setLayout(null);
final JLabel lblLocation = new JLabel("");
lblLocation.setBounds(10, 10, 112, 25);
frmjavaSwing.getContentPane().add(lblLocation);
final JLabel lblLocation2 = new JLabel("");
lblLocation2.setBounds(158, 10, 112, 25);
frmjavaSwing.getContentPane().add(lblLocation2);
JPanel panel = new JPanel();
panel.setBounds(10, 45, 429, 348);
frmjavaSwing.getContentPane().add(panel);
final JLabel lblNewLabel = new JLabel("");
panel.add(lblNewLabel);
lblNewLabel.setIcon(new ImageIcon(image));
lblNewLabel.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
lblLocation2.setText("");
lblLocation.setText("Join:X:"+arg0.getX()+",Y:"+arg0.getY());
BufferedImage newImage=matToBufferedImage(paintPointAndFillPoly(arg0.getX(),arg0.getY()));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
}
public Mat paintPointAndFillPoly(int x,int y){
Mat src = Imgcodecs.imread("D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\DSC_0625.jpg ");
List<Point> allPoint=getAllPoint();
allPoint.add(new Point(x,y));
//畫 鼠 點 铊 點
Imgproc.circle(src, new Point(x,y), 2, new Scalar(0,55,255),2);
//Fill Poly
if(allPoint.size()>=2){
MatOfPoint mop1=new MatOfPoint();
List<MatOfPoint> allMatOfPoint=new ArrayList<MatOfPoint>();
mop1.fromList(allPoint);
allMatOfPoint.add(mop1);
Imgproc.fillPoly(src, allMatOfPoint, new Scalar(255,255,255));
}
return src;
}
public BufferedImage matToBufferedImage(Mat matrix) {
int cols = matrix.cols();
int rows = matrix.rows();
int elemSize = (int)matrix.elemSize();
byte[] data = new byte[cols * rows * elemSize];
int type;
matrix.get(0, 0, data);
switch (matrix.channels()) {
case 1:
type = BufferedImage.TYPE_BYTE_GRAY;
break;
case 3:
type = BufferedImage.TYPE_3BYTE_BGR;
// bgr to rgb
byte b;
for(int i=0; i<data.length; i=i+3) {
b = data[i];
data[i] = data[i+2];
data[i+2] = b;
}
break;
default:
return null;
}
BufferedImage image2 = new BufferedImage(cols, rows, type);
image2.getRaster().setDataElements(0, 0, cols, rows, data);
return image2;
}
public List<Point> getAllPoint() {
return allPoint;
}
public void setAllPoint(List<Point> allPoint) {
this.allPoint = allPoint;
}
}
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