opencv 0.46.2

Rust bindings for OpenCV
Documentation 
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use opencv::core::{Point, Point2d, Point2f, Point2i, Point2l, Size2l, Vec2d};

#[test]
fn point_add() {
    let src = Point::new(0, 0);

    let res = Point::new(50, 50);
    {
        let src = src.clone();
        let out = src + Point::new(50, 50);
        assert_eq!(out, res);
    }

    {
        let mut out = src.clone();
        out += Point::new(50, 50);
        assert_eq!(out, res);
    }
}

#[test]
fn point_sub() {
    let src = Point::new(50, 50);

    let res = Point::new(25, 25);
    {
        let src = src.clone();
        let out = src - Point::new(25, 25);
        assert_eq!(out, res);
    }

    {
        let mut out = src.clone();
        out -= Point::new(25, 25);
        assert_eq!(out, res);
    }
}

#[test]
fn point_mul() {
    let src = Point2f::new(50., 50.);

    let res = Point2f::new(100., 100.);
    {
        let src = src.clone();
        let out = src * 2.;
        assert_eq!(out, res);
    }

    {
        let mut out = src.clone();
        out *= 2.;
        assert_eq!(out, res);
    }
}

#[test]
fn point_div() {
    let src = Point::new(50, 50);

    let res = Point::new(25, 25);
    {
        let src = src.clone();
        let out = src / 2;
        assert_eq!(out, res);
    }

    {
        let mut out = src.clone();
        out /= 2;
        assert_eq!(out, res);
    }
}

#[test]
fn point_constructor() {
    let r = Point2l::from_size(Size2l::new(1, 2));
    assert_eq!(1, r.x);
    assert_eq!(2, r.y);
}

#[test]
fn point_methods() {
    let pt = Point::new(2, 2);
    assert_eq!(2.8284271247461903, pt.norm());

    assert_eq!(0., pt.cross(Point::new(2, 2)));
    assert_eq!(0., pt.cross(Point::new(-4, -4)));
    assert_eq!(16., pt.cross(Point::new(-4, 4)));

    assert_eq!(8, pt.dot(Point::new(2, 2)));
    assert_eq!(8., pt.ddot(Point::new(2, 2)));
}

#[test]
fn point_conv() {
    let ptf = Point2d::new(1.2, 2.3);
    assert_eq!(Point2i::new(1, 2), ptf.to::<i32>().unwrap());
    assert_eq!(Point2f::new(1.2, 2.3), ptf.to::<f32>().unwrap());
    let pti = Point2i::new(1, 2);
    assert_eq!(Point2f::new(1., 2.), pti.to::<f32>().unwrap());

    let vec = Vec2d::from([10., 20.]);
    assert_eq!(vec, Point2d::from_vec2(vec).to_vec2());
}