Reference for Wiring version 0023+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
| Name |
atan2() |
| Description |
Calculates the angle (in radians) from a specified point to the coordinate origin as measured from the positive x-axis. Values are returned as a float in the range from PI to -PI. The atan2() function is most often used for orienting geometry to the position of the cursor. Note the y-coordinate of the point is the first parameter and the x-coordinate is the second due the the structure of calculating the tangent. |
| Syntax |
atan2(y, x); |
| Parameters |
| y |
int or float: y-coordinate of the point |
| x |
int or float: x-coordinate of the point |
|
| Returns |
float |
| Usage |
Application |
| Related |
tan()
|
Updated on November 01, 2009 12:11:19pm PST
