package org.opencv.core;
/**
* <p>template<typename _Tp> class CV_EXPORTS Point_ <code></p>
*
* <p>// C++ code:</p>
*
*
* <p>public:</p>
*
* <p>typedef _Tp value_type;</p>
*
* <p>// various constructors</p>
*
* <p>Point_();</p>
*
* <p>Point_(_Tp _x, _Tp _y);</p>
*
* <p>Point_(const Point_& pt);</p>
*
* <p>Point_(const CvPoint& pt);</p>
*
* <p>Point_(const CvPoint2D32f& pt);</p>
*
* <p>Point_(const Size_<_Tp>& sz);</p>
*
* <p>Point_(const Vec<_Tp, 2>& v);</p>
*
* <p>Point_& operator = (const Point_& pt);</p>
*
* <p>//! conversion to another data type</p>
*
* <p>template<typename _Tp2> operator Point_<_Tp2>() const;</p>
*
* <p>//! conversion to the old-style C structures</p>
*
* <p>operator CvPoint() const;</p>
*
* <p>operator CvPoint2D32f() const;</p>
*
* <p>operator Vec<_Tp, 2>() const;</p>
*
* <p>//! dot product</p>
*
* <p>_Tp dot(const Point_& pt) const;</p>
*
* <p>//! dot product computed in double-precision arithmetics</p>
*
* <p>double ddot(const Point_& pt) const;</p>
*
* <p>//! cross-product</p>
*
* <p>double cross(const Point_& pt) const;</p>
*
* <p>//! checks whether the point is inside the specified rectangle</p>
*
* <p>bool inside(const Rect_<_Tp>& r) const;</p>
*
* <p>_Tp x, y; //< the point coordinates</p>
*
* <p>};</p>
*
* <p>Template class for 2D points specified by its coordinates </code></p>
*
* <p><em>x</em> and <em>y</em>.
* An instance of the class is interchangeable with C structures,
* <code>CvPoint</code> and <code>CvPoint2D32f</code>. There is also a cast
* operator to convert point coordinates to the specified type. The conversion
* from floating-point coordinates to integer coordinates is done by rounding.
* Commonly, the conversion uses thisoperation for each of the coordinates.
* Besides the class members listed in the declaration above, the following
* operations on points are implemented: <code></p>
*
* <p>// C++ code:</p>
*
* <p>pt1 = pt2 + pt3;</p>
*
* <p>pt1 = pt2 - pt3;</p>
*
* <p>pt1 = pt2 * a;</p>
*
* <p>pt1 = a * pt2;</p>
*
* <p>pt1 += pt2;</p>
*
* <p>pt1 -= pt2;</p>
*
* <p>pt1 *= a;</p>
*
* <p>double value = norm(pt); // L2 norm</p>
*
* <p>pt1 == pt2;</p>
*
* <p>pt1 != pt2;</p>
*
* <p>For your convenience, the following type aliases are defined:</p>
*
* <p>typedef Point_<int> Point2i;</p>
*
* <p>typedef Point2i Point;</p>
*
* <p>typedef Point_<float> Point2f;</p>
*
* <p>typedef Point_<double> Point2d;</p>
*
* <p>Example:</p>
*
* <p>Point2f a(0.3f, 0.f), b(0.f, 0.4f);</p>
*
* <p>Point pt = (a + b)*10.f;</p>
*
* <p>cout << pt.x << ", " << pt.y << endl;</p>
*
* @see <a href="http://docs.opencv.org/modules/core/doc/basic_structures.html#point">org.opencv.core.Point_</a>
*/
public class Point {
public double x, y;
public Point(double x, double y) {
this.x = x;
this.y = y;
}
public Point() {
this(0, 0);
}
public Point(double[] vals) {
this();
set(vals);
}
public void set(double[] vals) {
if (vals != null) {
x = vals.length > 0 ? vals[0] : 0;
y = vals.length > 1 ? vals[1] : 0;
} else {
x = 0;
y = 0;
}
}
public Point clone() {
return new Point(x, y);
}
public double dot(Point p) {
return x * p.x + y * p.y;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
long temp;
temp = Double.doubleToLongBits(x);
result = prime * result + (int) (temp ^ (temp >>> 32));
temp = Double.doubleToLongBits(y);
result = prime * result + (int) (temp ^ (temp >>> 32));
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!(obj instanceof Point)) return false;
Point it = (Point) obj;
return x == it.x && y == it.y;
}
public boolean inside(Rect r) {
return r.contains(this);
}
@Override
public String toString() {
return "{" + x + ", " + y + "}";
}
}