The class represents rotated (i.e. not up-right) rectangles on a plane.
More...
#include <opencv2/core/types.hpp>
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float | angle |
| returns the rotation angle. When the angle is 0, 90, 180, 270 etc., the rectangle becomes an up-right rectangle. More...
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Point2f | center |
| returns the rectangle mass center More...
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Size2f | size |
| returns width and height of the rectangle More...
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The class represents rotated (i.e. not up-right) rectangles on a plane.
Each rectangle is specified by the center point (mass center), length of each side (represented by Size2f structure) and the rotation angle in degrees.
The sample below demonstrates how to use RotatedRect:
Point2f vertices[4];
rRect.points(vertices);
for (int i = 0; i < 4; i++)
{
line(test_image, vertices[i], vertices[(i+1)%4],
Scalar(0,255,0), 2);
}
Rect brect = rRect.boundingRect();
imshow(
"rectangles", test_image);
image
- See also
- CamShift, fitEllipse, minAreaRect, CvBox2D
- Examples:
- samples/cpp/camshiftdemo.cpp, samples/cpp/fitellipse.cpp, and samples/cpp/minarea.cpp.
◆ RotatedRect() [1/3]
cv::RotatedRect::RotatedRect |
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Python: |
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| cv.RotatedRect( | | ) -> | <RotatedRect object> |
| cv.RotatedRect( | center, size, angle | ) -> | <RotatedRect object> |
| cv.RotatedRect( | point1, point2, point3 | ) -> | <RotatedRect object> |
◆ RotatedRect() [2/3]
cv::RotatedRect::RotatedRect |
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const Point2f & |
center, |
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const Size2f & |
size, |
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float |
angle |
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) |
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Python: |
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| cv.RotatedRect( | | ) -> | <RotatedRect object> |
| cv.RotatedRect( | center, size, angle | ) -> | <RotatedRect object> |
| cv.RotatedRect( | point1, point2, point3 | ) -> | <RotatedRect object> |
full constructor
- Parameters
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center | The rectangle mass center. |
size | Width and height of the rectangle. |
angle | The rotation angle in a clockwise direction. When the angle is 0, 90, 180, 270 etc., the rectangle becomes an up-right rectangle. |
◆ RotatedRect() [3/3]
Python: |
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| cv.RotatedRect( | | ) -> | <RotatedRect object> |
| cv.RotatedRect( | center, size, angle | ) -> | <RotatedRect object> |
| cv.RotatedRect( | point1, point2, point3 | ) -> | <RotatedRect object> |
Any 3 end points of the RotatedRect. They must be given in order (either clockwise or anticlockwise).
◆ boundingRect()
Rect cv::RotatedRect::boundingRect |
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const |
Python: |
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| cv.RotatedRect.boundingRect( | | ) -> | retval |
returns the minimal up-right integer rectangle containing the rotated rectangle
◆ boundingRect2f()
Rect_<float> cv::RotatedRect::boundingRect2f |
( |
| ) |
const |
returns the minimal (exact) floating point rectangle containing the rotated rectangle, not intended for use with images
◆ points() [1/2]
void cv::RotatedRect::points |
( |
Point2f |
pts[] | ) |
const |
Python: |
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| cv.RotatedRect.points( | | ) -> | pts |
returns 4 vertices of the rotated rectangle
- Parameters
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pts | The points array for storing rectangle vertices. The order is bottomLeft, topLeft, topRight, bottomRight. |
- Note
- Bottom, Top, Left and Right sides refer to the original rectangle (angle is 0), so after 180 degree rotation bottomLeft point will be located at the top right corner of the rectangle.
- Examples:
- samples/cpp/fitellipse.cpp, and samples/cpp/minarea.cpp.
◆ points() [2/2]
void cv::RotatedRect::points |
( |
std::vector< Point2f > & |
pts | ) |
const |
Python: |
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| cv.RotatedRect.points( | | ) -> | pts |
◆ angle
float cv::RotatedRect::angle |
returns the rotation angle. When the angle is 0, 90, 180, 270 etc., the rectangle becomes an up-right rectangle.
◆ center
◆ size
The documentation for this class was generated from the following file: