org.bytedeco.javacpp

Class opencv_core.Point

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.IntPointer

org.bytedeco.javacpp.opencv_core.Point

All Implemented Interfaces:

AutoCloseable

Enclosing class:

opencv_core

@Name(value="cv::Point_")
@NoOffset
public static class opencv_core.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

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

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

Method Summary

Methods

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

Methods inherited from class org.bytedeco.javacpp.IntPointer

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

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asByteBuffer, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, hashCode, isNull, limit, maxBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, position, put, setNull, sizeof, toString, totalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

opencv_core.Point

public opencv_core.Point(Pointer p)

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

opencv_core.Point

public opencv_core.Point(long size)

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

opencv_core.Point

public opencv_core.Point()

opencv_core.Point

public opencv_core.Point(int _x,
                 int _y)

opencv_core.Point

public opencv_core.Point(@Const@ByRef
                 opencv_core.Point pt)

opencv_core.Point

public opencv_core.Point(@Const@ByRef
                 opencv_core.Size sz)

Method Detail

position

public opencv_core.Point position(long position)

Overrides:

position in class IntPointer

put

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

dot

public int dot(@Const@ByRef
      opencv_core.Point pt)

dot product

ddot

public double ddot(@Const@ByRef
          opencv_core.Point pt)

dot product computed in double-precision arithmetics

cross

public double cross(@Const@ByRef
           opencv_core.Point pt)

cross-product

inside

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

checks whether the point is inside the specified rectangle

x

public int x()

x

public opencv_core.Point x(int x)

y

public int y()

y

public opencv_core.Point y(int y)