Forums Register Login

Help with maths...snif,sniff

+Pie Number of slices to send: Send
hello!!!
ok, i have to do a maths problem sheet...and i am stuck...can u guys help me out?
thanks!!
e) give the outline of an efficient algorithm to test if a point is inside a rectangle.
f) how would you test whether two circles intersect
thanks!!!
+Pie Number of slices to send: Send
Moving to Programming Diversions. Post followups there.
+Pie Number of slices to send: Send
 

Originally posted by mike brindley:
f) how would you test whether two circles intersect


One way is to test if the distance between their centers is less than the sum of their radii.
+Pie Number of slices to send: Send
 


give the outline of an efficient algorithm to test if a point is inside a rectangle.


Given the point's co-ordinates x,y
If (x >= Xa) and (x <= Xb)
and if (y >= Ya) and (y <= Yb) then point x,y is inside the rectangle,
where the co-ordinates of the four points are Xa,Ya ; Xa,Yb ; Xb,Ya ; Xb,Yb.
Or , more concisely
Xa <= x >= Xb and Ya <= y >= Yb
I think that works ,as long as you are given the points and rectangles co-ordinates.
[ August 25, 2003: Message edited by: HS Thomas ]
+Pie Number of slices to send: Send
This sounds a lot like homework problems to me.
--Mark
+Pie Number of slices to send: Send
yeah its homework...i have done like 15 questions, i only have a few left...
ie, the ones i just couldnt figure out how to do, thats why i ask for help....
its ok right?
thanks...
+Pie Number of slices to send: Send
Some people try to get homework problems done for them by posting on this site. You were upfront about it.
I just wanted to make it clear to other posters that they shouldn't solve the problems outright, but rather give you advice and suggestions. I think that is fine.
I'm not sure if this is quite the right forum for it, in that this forum is for problem discussion, and we would have to minimize discussion in order to not do your work for you.
--Mark
You can thank my dental hygienist for my untimely aliveness. So tiny:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com


reply
reply
This thread has been viewed 1104 times.
Similar Threads
decent math forum
master degree in math helps?
The Math class
Java does not seem to calculate doubles accurately
Other Shuffling question
Thread Boost feature
More...

All times above are in ranch (not your local) time.
The current ranch time is
Mar 29, 2024 00:29:59.