Quad.Atan
Returns the angle between the X-axis and the ray from the origin to the specified point.
Definition
Namespace: Numerics.NET
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.0
C#
An angle, θ, measured in radians, such that -π≤θ≤π, and tan(θ) = y / x, where (x, y) is a point in the Cartesian plane. Observe the following: For (x, y) in quadrant 1, 0 < θ < π/2.For (x, y) in quadrant 2, π/2 < θ≤π.For (x, y) in quadrant 3, -π < θ < -π/2.For (x, y) in quadrant 4, -π/2 < θ < 0.For points on the boundaries of the quadrants, the return value is the following:If y is 0 and x is not negative, θ = 0.If y is 0 and x is negative, θ = π. If y is positive and x is 0, θ = π/2. If y is negative and x is 0, θ = -π/2.
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.0
public static Quad Atan2(
Quad yValue,
Quad xValue
)Parameters
Return Value
QuadAn angle, θ, measured in radians, such that -π≤θ≤π, and tan(θ) = y / x, where (x, y) is a point in the Cartesian plane. Observe the following: For (x, y) in quadrant 1, 0 < θ < π/2.For (x, y) in quadrant 2, π/2 < θ≤π.For (x, y) in quadrant 3, -π < θ < -π/2.For (x, y) in quadrant 4, -π/2 < θ < 0.For points on the boundaries of the quadrants, the return value is the following:If y is 0 and x is not negative, θ = 0.If y is 0 and x is negative, θ = π. If y is positive and x is 0, θ = π/2. If y is negative and x is 0, θ = -π/2.