# Thread: How to know direction of point

1. Ya, you are absolutely & I agree your Point completely.

I fully agree your suggestions but this can be called as a communication failure on myside to describe full set of possible conditions.

In the attached figure, both the lines are in 3rd quadrant, but a possiblity is that Line AB is in 2nd, CD In 4th & so on......The list is endless.

So, the direction is vital to derive to proceed for swapping further.

Zirok

2. Originally Posted by Zirok
Ya, you are absolutely & I agree your Point completely.

I fully agree your suggestions but this can be called as a communication failure on myside to describe full set of possible conditions.

In the attached figure, both the lines are in 3rd quadrant, but a possiblity is that Line AB is in 2nd, CD In 4th & so on......The list is endless.

So, the direction is vital to derive to proceed for swapping further.

Zirok
What attached figure? Did you forget to attach it? This is a bit of a struggle.

If quadrants are important, then you should probably include the x- and y-axes in whatever image you choose to share...

Also, it doesn't make sense to say that a line is confined to one quadrant. A line is infinite and must span at least two quadrants, unless it coincides with an axis..

3. Than, i need to write endless conditions such as -

if Line AB - 1st, CD - 1st, than d1 should be on positive side of Interesection Point
If Line AB - 1st, CD - 2nd ,, & so on..............

If i would get some logic to know the direction of the line, i would have not struggled so much to imagine....

4. Originally Posted by Zirok
Than, i need to write endless conditions such as -

if Line AB - 1st, CD - 1st, than d1 should be on positive side of Interesection Point
If Line AB - 1st, CD - 2nd ,, & so on..............

If i would get some logic to know the direction of the line, i would have not struggled so much to imagine....
I'm sorry, but your questions are non well-formulated enough to permit an answer to be given. As was already mentioned, there is no "positive" or "negative" side of an intersection; the direction can be given as a vector, or as an angle between 0 and 360 degrees (or 0 and 2pi radians), and there is only positive/negative in the x-direction or y-direction, or in the direction of some other axis of your choosing.

I would like to help you, but I simply cannot answer a question that does not make sense. I hope you find your answer soon! I will try to continue helping. I might be busy though as the work week is starting in my time zone. The other people here will also be able to answer questions.

5. Thanks Sir, for your valueable time & unmatched support & Interest in My Problem.

Page 2 of 2 First 12