Signed angle between vectors

0 votes
How would you find the signed angle theta from vector a to b?

Can you tell something that can give me the minimum angle to rotate from a to b. A positive sign indicates a rotation from +x-axis towards +y-axis. Conversely, a negative sign indicates a rotation from +x-axis towards -y-axis.

assert angle((1,0),(0,1)) == pi/2.
assert angle((0,1),(1,0)) == -pi/2.
Dec 11, 2018 in Python by ana1504.k
• 7,910 points
1,545 views

1 answer to this question.

0 votes
If you have an atan2() function in your math library of choice:

signed_angle = atan2(b.y,b.x) - atan2(a.y,a.x)
answered Dec 11, 2018 by SDeb
• 13,300 points

Related Questions In Python

0 votes
1 answer

What's the difference in Qt between setVisible, setShown and show/hide

show() is just a convenience function for ...READ MORE

answered Apr 17, 2018 in Python by anonymous
5,060 views
0 votes
1 answer

What is the difference between list and tuple?

Lists are mutable(values can be changed) whereas ...READ MORE

answered May 5, 2018 in Python by aayushi
• 750 points
4,181 views
+1 vote
2 answers

Measuring the distance between pixels on OpenCv with Python

You can try this: Mat pts1(nPts, 1, CV_8UC2), ...READ MORE

answered Aug 24, 2018 in Python by Omkar
• 69,150 points
8,643 views
0 votes
2 answers
+1 vote
2 answers

how can i count the items in a list?

Syntax :            list. count(value) Code: colors = ['red', 'green', ...READ MORE

answered Jul 7, 2019 in Python by Neha
• 330 points

edited Jul 8, 2019 by Kalgi 2,476 views
0 votes
1 answer
0 votes
2 answers

difference between class and instance attributes

Apart from the performance, there is a ...READ MORE

answered Sep 17, 2018 in Python by SDeb
• 13,300 points
285 views
0 votes
1 answer

Difference between iterators & generators

iterator is a more general concept: any ...READ MORE

answered Oct 29, 2018 in Python by SDeb
• 13,300 points
2,222 views