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Function for drawing arrows

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Porting the [PR 2970](https://github.com/Itseez/opencv/pull/2970) To the new InputOutputArray type
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PhilLab
2014-07-17 09:19:31 +02:00
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parent 8f8450793a
commit e82241cba5
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modules/core/doc/drawing_functions.rst
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@@ -361,6 +361,37 @@ The function ``line`` draws the line segment between ``pt1`` and ``pt2`` points
Antialiased lines are drawn using Gaussian filtering.
arrowedLine
----------------
Draws a arrow segment pointing from the first point to the second one.
.. ocv:function:: void arrowedLine(InputOutputArray img, Point pt1, Point pt2, const Scalar& color, int thickness=1, int lineType=8, int shift=0, double tipLength=0.1)
:param img: Image.
:param pt1: The point the arrow starts from.
:param pt2: The point the arrow points to.
:param color: Line color.
:param thickness: Line thickness.
:param lineType: Type of the line:
* **8** (or omitted) - 8-connected line.
* **4** - 4-connected line.
* **CV_AA** - antialiased line.
:param shift: Number of fractional bits in the point coordinates.
:param tipLength: The length of the arrow tip in relation to the arrow length
The function ``arrowedLine`` draws an arrow between ``pt1`` and ``pt2`` points in the image. See also :ocv:func:`line`.
LineIterator
------------
.. ocv:class:: LineIterator