org.bytedeco.opencv.opencv_core

Class Point

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.IntPointer

org.bytedeco.opencv.opencv_core.Point

All Implemented Interfaces:

AutoCloseable

@Name(value="cv::Point_<int>")
 @NoOffset
 @Properties(inherit=opencv_core.class)
public class Point
extends IntPointer

\brief Template class for 2D points specified by its coordinates x and y.

An instance of the class is interchangeable with C structures, CvPoint and CvPoint2D32f . 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 this operation for each of the coordinates. Besides the class members listed in the declaration above, the following operations on points are implemented:

    pt1 = pt2 + pt3;
    pt1 = pt2 - pt3;
    pt1 = pt2 * a;
    pt1 = a * pt2;
    pt1 = pt2 / a;
    pt1 += pt2;
    pt1 -= pt2;
    pt1 *= a;
    pt1 /= a;
    double value = norm(pt); // L2 norm
    pt1 == pt2;
    pt1 != pt2;

For your convenience, the following type aliases are defined:

    typedef Point_<int> Point2i;
    typedef Point2i Point;
    typedef Point_<float> Point2f;
    typedef Point_<double> Point2d;

Example:

    Point2f a(0.3f, 0.f), b(0.f, 0.4f);
    Point pt = (a + b)*10.f;
    cout << pt.x << ", " << pt.y << endl;

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
Point() default constructor
Point(int _x, int _y)
Point(long size) Native array allocator.
Point(Point pt)
Point(Pointer p) Pointer cast constructor.
Point(Size sz)

Method Summary

Modifier and Type	Method and Description
double	cross(Point pt) cross-product
double	ddot(Point pt) dot product computed in double-precision arithmetics
int	dot(Point pt) dot product
boolean	inside(Rect r) checks whether the point is inside the specified rectangle
Point	position(long position)
Point	put(Point pt)
int	x() x coordinate of the point
Point	x(int setter)
int	y() y coordinate of the point
Point	y(int setter)

Methods inherited from class org.bytedeco.javacpp.IntPointer

asBuffer, capacity, get, get, get, get, getString, getStringCodePoints, limit, put, put, put, put, putString, sizeof

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asByteBuffer, availablePhysicalBytes, calloc, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Point

public Point(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Point

public Point(long size)

Native array allocator. Access with Pointer.position(long).

Point

public Point()

default constructor

Point

public Point(int _x,
             int _y)

Point

public Point(@Const @ByRef
             Point pt)

Point

public Point(@Const @ByRef
             Size sz)

Method Detail

position

public Point position(long position)

Overrides:

position in class IntPointer

put

@ByRef
 @Name(value="operator =")
public Point put(@Const @ByRef
                                                   Point pt)

dot

public int dot(@Const @ByRef
               Point pt)

dot product

ddot

public double ddot(@Const @ByRef
                   Point pt)

dot product computed in double-precision arithmetics

cross

public double cross(@Const @ByRef
                    Point pt)

cross-product

inside

@Cast(value="bool")
public boolean inside(@Const @ByRef
                                          Rect r)

checks whether the point is inside the specified rectangle

x

public int x()

x coordinate of the point

x

public Point x(int setter)

y

public int y()

y coordinate of the point

y

public Point y(int setter)