|
|
|
|
Bookmark this on Delicious
Share on Facebook
 Slashdot It!
Digg  acos
Arc cosine
(PHP 4, PHP 5)
Code Examples / Notes » acoszoltan dot szentesi
Wondering what is the use of 'acos' function? It is essential in games, animations and drawings to determine the location of two objects relating to each other. To the point: the angle of two vectors is calculated by v1X*v2X + v1Y*v2Y acos(--------------------------)=angle between two vectors. |v1| * |v2| |v1| and |v2| are the length of the vectors and calculated using Pithagoras-formula: |v1|=sqrt(v1X*v1X + v1Y*v1Y) This helped me to calculate and share given space for 'n' amount of objects so that they don't overlap. Enjoy! :-) |
