generic-library/opencv
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Function for drawing arrows

Browse Source
This commit is contained in:
unknown
2014-07-11 19:43:04 +02:00
parent d262b04d99
commit d0c3c4c373
3 changed files with 53 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
modules/core/src/drawing.cpp
View File

@@ -1580,6 +1580,25 @@ void line( Mat& img, Point pt1, Point pt2, const Scalar& color,
ThickLine( img, pt1, pt2, buf, thickness, line_type, 3, shift );
}
void arrowedLine(Mat& img, Point pt1, Point pt2, const Scalar& color,
int thickness, int line_type, int shift, double tipLength)
{
const double tipSize = norm(pt1-pt2)*tipLength;// Factor to normalize the size of the tip depending on the length of the arrow
line(img, pt1, pt2, color, thickness, line_type, shift);
const double angle = atan2( (double) pt1.y - pt2.y, (double) pt1.x - pt2.x );
Point p(cvRound(pt2.x + tipSize * cos(angle + CV_PI / 4)),
cvRound(pt2.y + tipSize * sin(angle + CV_PI / 4)));
line(img, p, pt2, color, thickness, line_type, shift);
p.x = cvRound(pt2.x + tipSize * cos(angle - CV_PI / 4));
p.y = cvRound(pt2.y + tipSize * sin(angle - CV_PI / 4));
line(img, p, pt2, color, thickness, line_type, shift);
}
void rectangle( Mat& img, Point pt1, Point pt2,
const Scalar& color, int thickness,
int lineType, int shift )