Arc Tangent 2

Overview

The Arc Tangent 2 Node.

The Arc Tangent 2 Node takes two Float values, $y$ and $x$, and returns $atan2(y,x)$. The result can be obtained in degrees (°) or radians (rad).

The function $atan2(y,x)$ is of common use in computer science and can be equivalently defined as:

• The angle $\theta$ in the Euclidean plane between the positive $X$ axis and the ray connecting the origin and the point $(x,y)$.
• The phase $\theta$ of the complex number $x+iy$. That is, the angle $\theta \in (-\pi, \pi]$ such that $x=r\cos\theta$ and $y=r\sin\theta$, where $r=\sqrt{x^2+y^2}$.

Scope: Project, Scene, Function, Prefab.

Attributes

The Arc Tangent 2 Node Attributes.

Miscellaneous

Attribute	Type	Description
Is Degree	Bool	Determines whether the Output value is given in degrees (°) or radians (rad).
Default Value y	Float	The default value of y, if no value is provided in the Input Socket.
Default Value x	Float	The default value of x, if no value is provided in the Input Socket.

Inputs

Input	Type	Description
Pulse Input (►)	Pulse	A standard Input Pulse, to trigger the execution of the Node.
y	Float	The $y$ input value.
x	Float	The $x$ input value.

Outputs

Output	Type	Description
Pulse Output (►)	Pulse	A standard Output Pulse, to move onto the next Node along the Logic Branch, once this Node has finished its execution.
Output	Float	The value of $atan2(y,x)$, either in degrees (°) or radians (rad), according to the Is Degree Attribute.

See Also

• Trigonometry
• Radian-Degree Converter

External Links

• atan2 on Wikipedia.