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rectangularToPolar(_:)

Returns single-precision polar coordinates converted from rectangular coordinates.

Declaration

static func rectangularToPolar<U>(_ rectangularCoordinates: U) -> [Float] where U : AccelerateBuffer, U.Element == Float

Parameters

  • rectangularCoordinates:

    The source rectangular coordinates.

Discussion

The function calls the underlying vDSP_polarD function to convert the input angle-radius pairs to Cartesian x-y pairs.

The following code shows how to convert a set of Cartesian coordinates to its angle-radius pair (with the angle specified in degress) equivalent:

   let rectangularCoordinates: [Float] = [ 5.0, 5.0 ]

    let polarCoordinates = vDSP.rectangularToPolar(rectangularCoordinates)
    
    let radius = polarCoordinates[0]
    let angle = Measurement(value: Double(polarCoordinates[1]),
                            unit: UnitAngle.radians)
        .converted(to: UnitAngle.degrees)
        .value
    
    // Prints "7.07 45.0".
    print(radius, angle)

See Also

Converting rectangular coordinates to polar coordinates