how to use opencv_imgproc.polylines()

[crasy1]

i use like this

        Mat mat=new Mat(1000,1000,opencv_core.CV_8U,Scalar.BLACK);
        org.bytedeco.opencv.opencv_core.Point[] pointArr =new org.bytedeco.opencv.opencv_core.Point[]{
                new org.bytedeco.opencv.opencv_core.Point(100,100),
                new org.bytedeco.opencv.opencv_core.Point(500,100),
                new org.bytedeco.opencv.opencv_core.Point(500,500),
                new org.bytedeco.opencv.opencv_core.Point(100,500)
        };
        PointerPointer pointerPointer = new PointerPointer(1);
        pointerPointer.put(pointArr);
        IntPointer intPointer = new IntPointer(1);
        int[] ints = {4};
        intPointer.put(ints);
        polylines(mat,pointerPointer,intPointer,1,true,Scalar.WHITE,1,LINE_8,0);
        imwrite("img.jpg",mat);

but result is wrong

[saudet]

It's probably easier to use the overloads that take a MatVector instead of a PointerPointer....

[crasy1]

how to construct MatVector by Point array

[saudet]

We can do something like shown in discussion https://github.com/bytedeco/javacv/discussions/1778#discussioncomment-2343876.

[crasy1]

@saudet got it ,thanks

[saudet]

Duplicate of #1778