math.atan2

From Garry's Mod
Revision as of 16:16, 3 August 2018 by NeatNit (Talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
 math.atan2( )

Contents

Description

atan2 functions like math.atan(y / x), except it also takes into account the quadrant of the angle and so doesn't have a limited range of output.

NOTE

The Y argument comes first!

Arguments

number y

Y coordinate.

Arguments

number x

X coordinate.

Returns

number

The angle of the line from (0, 0) to (x, y) in radians, in the range -pi to pi.

Examples

Example

atan( 1 ) and atan2( 1, 1 ) are both math.pi / 4

atan2( -1, -1 ) equals to ( (-3) * math.pi ) / 4

print( atan( 1 ) )
print( ata2( 1, 1 ) )
print( atan2( -1, -1 ) )

Output:

0.7853981633974483

0.7853981633974483

-2.356194490192345
Personal tools
Navigation