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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
//
// Copyright (C) 2016, Itseez, Inc, all rights reserved.
#include "test_precomp.hpp"
#include <vector>
#include <cmath>
using namespace cv;
using namespace std;
// return true if point lies inside ellipse
static bool check_pt_in_ellipse(const Point2f& pt, const RotatedRect& el) {
Point2f to_pt = pt - el.center;
double pt_angle = atan2(to_pt.y, to_pt.x);
double el_angle = el.angle * CV_PI / 180;
double x_dist = 0.5 * el.size.width * cos(pt_angle + el_angle);
double y_dist = 0.5 * el.size.height * sin(pt_angle + el_angle);
double el_dist = sqrt(x_dist * x_dist + y_dist * y_dist);
return norm(to_pt) < el_dist;
}
// Return true if mass center of fitted points lies inside ellipse
static bool fit_and_check_ellipse(const vector<Point2f>& pts) {
RotatedRect ellipse = fitEllipse(pts);
Point2f mass_center;
for (size_t i = 0; i < pts.size(); i++) {
mass_center += pts[i];
}
mass_center /= (float)pts.size();
return check_pt_in_ellipse(mass_center, ellipse);
}
TEST(Imgproc_FitEllipse_Issue_4515, DISABLED_accuracy) {
vector<Point2f> pts;
pts.push_back(Point2f(327, 317));
pts.push_back(Point2f(328, 316));
pts.push_back(Point2f(329, 315));
pts.push_back(Point2f(330, 314));
pts.push_back(Point2f(331, 314));
pts.push_back(Point2f(332, 314));
pts.push_back(Point2f(333, 315));
pts.push_back(Point2f(333, 316));
pts.push_back(Point2f(333, 317));
pts.push_back(Point2f(333, 318));
pts.push_back(Point2f(333, 319));
pts.push_back(Point2f(333, 320));
EXPECT_TRUE(fit_and_check_ellipse(pts));
}
TEST(Imgproc_FitEllipse_Issue_6544, DISABLED_accuracy) {
vector<Point2f> pts;
pts.push_back(Point2f(924.784f, 764.160f));
pts.push_back(Point2f(928.388f, 615.903f));
pts.push_back(Point2f(847.4f, 888.014f));
pts.push_back(Point2f(929.406f, 741.675f));
pts.push_back(Point2f(904.564f, 825.605f));
pts.push_back(Point2f(926.742f, 760.746f));
pts.push_back(Point2f(863.479f, 873.406f));
pts.push_back(Point2f(910.987f, 808.863f));
pts.push_back(Point2f(929.145f, 744.976f));
pts.push_back(Point2f(917.474f, 791.823f));
EXPECT_TRUE(fit_and_check_ellipse(pts));
}
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