Index
 
  Reference for Wiring 1.0 (ALPHA) 0017+. 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()

   
Examples   






	


	

		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
		 
	
	
Web & Application	

           
 
            
             
             
          


	

		Related
		 
	
	
tan()