abs
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! :-)
acos
(PHP 4, PHP 5)
acos — Arkuskosinus
Beschreibung
float acos
( float $arg
)
Berechnet den Arkuskosinus des Parameters arg. acos() ist die Komplementärfunktion zu cos(), d.h. innerhalb des Wertebereichs von acos() gilt a==cos(acos(a)).
Parameter-Liste
- arg
-
Der zu verarbeitende Wert
Rückgabewerte
Der Arkuskosinus von arg in Bogenmaß
add a note
User Contributed Notesacos
zoltan dot szentesi at nokia dot com
06-Aug-2006 12:29
06-Aug-2006 12:29