[opencv.js] support for findHomography()

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reading here OpenCV: Camera Calibration and 3D Reconstruction

it says:

srcPoints Coordinates of the points in the original plane, a matrix of the type CV_32FC2 or vector Point2f
dstPoints Coordinates of the points in the target plane, a matrix of the type CV_32FC2 or a vector Point2f

but when i use cv.CV_32FC2 versus cv.CV_32F as the third argument in cv.matFromArray the homography fails with an unhandled exception. there are still NaN’s in mat1

also:

…or it could be how I am forming the points1 and points2 arrays (see 2 different ways below). Neither works, but it leads me to believe I may not be formulating the points1 and points2 arrays correctly.

	let points1 = [];
	let points2 = [];
	for (let i = 0; i < good_matches.size(); i++) {

		//Option 1:
		//points1.push(keypoints1.get(good_matches.get(i).queryIdx ).pt );
		//points2.push(keypoints2.get(good_matches.get(i).trainIdx ).pt );                
		//  This array elements look like this:
		//    {x: 190.8971710205078, y: 298.37286376953125}
		//Option 2:
		//  This array elements look like this:
		//    Point {x: 190.8971710205078, y: 298.37286376953125}
		points1.push( new cv.Point(keypoints1.get(good_matches.get(i).queryIdx).pt.x, keypoints1.get(good_matches.get(i).queryIdx).pt.y));
		points2.push( new cv.Point(keypoints2.get(good_matches.get(i).trainIdx).pt.x, keypoints2.get(good_matches.get(i).trainIdx).pt.y));
	}

        //I've also tried 2 and 3 for the second argument to matFromArray() below
	let mat1 = cv.matFromArray(points1.length, 2, cv.CV_32F, points1);
	let mat2 = cv.matFromArray(points2.length, 2, cv.CV_32F, points2); 
	console.log("mat1: ", mat1, "mat2: ", mat2);
	let h = cv.findHomography(mat1, mat2, cv.RANSAC);