org.opencv.core
Class Rect
java.lang.Object
org.opencv.core.Rect
public class Rect
- extends java.lang.Object
Template class for 2D rectangles, described by the following parameters:
- Coordinates of the top-left corner. This is a default interpretation
of
Rect_.x
and Rect_.y
in OpenCV. Though, in your
algorithms you may count x
and y
from the
bottom-left corner.
- Rectangle width and height.
OpenCV typically assumes that the top and left boundary of the rectangle are
inclusive, while the right and bottom boundaries are not. For example, the
method Rect_.contains
returns true
if
x <= pt.x < x+width,
y <= pt.y < y+height
Virtually every loop over an image ROI in OpenCV (where ROI is specified by
Rect_
) is implemented as:
In addition to the class members, the following operations on rectangles are
implemented:
- rect = rect +- point (shifting a rectangle by a certain
offset)
- rect = rect +- size (expanding or shrinking a rectangle by a
certain amount)
-
rect += point, rect -= point, rect += size, rect -= size
(augmenting operations)
-
rect = rect1 & rect2
(rectangle intersection)
-
rect = rect1 | rect2
(minimum area rectangle containing
rect2
and rect3
)
-
rect &= rect1, rect |= rect1
(and the corresponding
augmenting operations)
-
rect == rect1, rect != rect1
(rectangle comparison)
This is an example how the partial ordering on rectangles can be established
(rect1 subseteq rect2):
For your convenience, the Rect_<>
alias is available:
- See Also:
- org.opencv.core.Rect_
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, wait, wait, wait |
height
public int height
width
public int width
x
public int x
y
public int y
Rect
public Rect()
Rect
public Rect(double[] vals)
Rect
public Rect(int x,
int y,
int width,
int height)
Rect
public Rect(Point p1,
Point p2)
Rect
public Rect(Point p,
Size s)
area
public double area()
br
public Point br()
clone
public Rect clone()
- Overrides:
clone
in class java.lang.Object
contains
public boolean contains(Point p)
equals
public boolean equals(java.lang.Object obj)
- Overrides:
equals
in class java.lang.Object
hashCode
public int hashCode()
- Overrides:
hashCode
in class java.lang.Object
set
public void set(double[] vals)
size
public Size size()
tl
public Point tl()
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object