llAtan2

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/LSL

Atan2

llAtan2

Summary

Function: float llAtan2( float y, float x );

3	Function ID
0.0	Forced Delay
10.0	Energy

Returns a float that is the  arctangent2 of y, x.

• float	y
• float	x

Similar to the arctangent(y/x) except it utilizes the signs of x & y to determine the quadrant. Returns zero if x and y are zero.

Caveats

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Examples

<lsl>default {

 state_entry()
 {
   float num1 = llFrand(100.0);
   float num2 = llFrand(100.0);

   llOwnerSay("y = " + (string)num1);
   llOwnerSay("x = " + (string)num2);

   llOwnerSay("The tangent of y divided by x is " + (string)llAtan2(num1, num2));
 }

}</lsl>

See Also

Functions

• llSin	llAsin	–	sine & inverse Sine
• llCos	llAcos	–	cosine & inverse cosine
• llTan		–	tangent

Articles

•	Atan2
•	Inverse_trigonometric_function

Deep Notes

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Signature
function float llAtan2( float y, float x );