java opencv绘制工字型

package com.vfsd.core;

import java.util.ArrayList;
import java.util.List;

import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.highgui.HighGui;
import org.opencv.imgproc.Imgproc;

public class Test4 {

    public static void main( String[] args )
    {
        System.loadLibrary( Core.NATIVE_LIBRARY_NAME );
        Scalar scalar1  = new Scalar(0,0,0);
        
        
        
        Mat img1 = new Mat(360,840,CvType.CV_8UC3,scalar1);
        
        List<Integer> list1_points =  new  ArrayList<Integer>();
        list1_points.add(50);
        list1_points.add(50);
        list1_points.add(70);
        list1_points.add(70);
        
        drawPolygonShape(img1,list1_points,0,0,1);
        
        List<Integer> list2_points =  new  ArrayList<Integer>();
        list2_points.add(50);
        list2_points.add(50);
        
        list2_points.add(150);
        list2_points.add(50);
        
        list2_points.add(150);
        list2_points.add(70);
        
        list2_points.add(110);
        list2_points.add(70);
        
        list2_points.add(110);
        list2_points.add(200);
        
        list2_points.add(150);
        list2_points.add(200);
        
        list2_points.add(150);
        list2_points.add(220);
        
        list2_points.add(50);
        list2_points.add(220);
        
        list2_points.add(50);
        list2_points.add(200);
        
        list2_points.add(90);
        list2_points.add(200);
        
        list2_points.add(90);
        list2_points.add(70);
        
        list2_points.add(50);
        list2_points.add(70);
        
        drawPolygonShape(img1,list2_points,50,50,2);
        
        drawPolygonShape(img1,list2_points,250,50,2);
        
        drawPolygonShape(img1,list2_points,450,50,2);
        
        
        
        HighGui.imshow("win1", img1);
        HighGui.waitKey();
        
    }
    
    public static void drawPolygonShape(Mat img1,List<Integer> list_points,int center_x,int center_y,int shape_type) {
        Scalar scalar2  = new Scalar(0,0,255);
        //矩形
        if(shape_type==1) {
            Rect  rect1 = new Rect(new Point(list_points.get(0),list_points.get(1)),new Point(list_points.get(2),list_points.get(3)));
            Imgproc.rectangle(img1,rect1 , scalar2);
        }
        //多边形 
        else if(shape_type==2)
        {
            for(int k=0;k<list_points.size();k+=2){
                if(k<list_points.size()-2) {
                    int point1_x = list_points.get(k+0)+center_x;
                    int point1_y = list_points.get(k+1)+center_y;
                    
                    int point2_x = list_points.get(k+2)+center_x;
                    int point2_y = list_points.get(k+3)+center_y;
                    
                    Imgproc.line(img1,new Point(point1_x,point1_y),new Point(point2_x,point2_y),scalar2,1);
                }else {
                    int point1_x = list_points.get(0)+center_x;
                    int point1_y = list_points.get(1)+center_y;
                    
                    int point2_x = list_points.get(list_points.size()-2)+center_x;
                    int point2_y = list_points.get(list_points.size()-1)+center_y;
                    
                    Imgproc.line(img1,new Point(point1_x,point1_y),new Point(point2_x,point2_y),scalar2,1);
                }
            }
        }
        
    }
}