Vector2Multiplicative Protocol Reference


                    
                    
                    unitX

Default implementation

Gets the (x: 1, y: 0) vector of this type.

Default Implementation

Gets the (x: 1, y: 0) vector of this type.

Declaration

Swift

static var unitX: Self { get }


                    
                    
                    unitY

Default implementation

Gets the (x: 0, y: 1) vector of this type.

Default Implementation

Gets the (x: 0, y: 1) vector of this type.

Declaration

Swift

static var unitY: Self { get }


                    
                    
                    cross(_:)

Default implementation

Calculates the cross product between this and another provided Vector. The resulting scalar would match the ‘z’ axis of the cross product between 3d vectors matching the x and y coordinates of the operands, with the ‘z’ coordinate being 0.

Also called perp-dot product, as it equates to taking the dot product of self • other.perpendicular. Provided in Vector2Multiplicative as a convenience, as the protocol constraints are more lax than Vector2Signed.

Default Implementation

Declaration

Swift

func cross(_ other: Self) -> Scalar


                    
                    
                    tripleProduct(_:_:)

Default implementation

Performs a 2D vector triple product between self, b, and c: a x (b x c).

Can be used to derive a vector perpendicular to ab, such that it points in the direction of ac.

Default Implementation

Declaration

Swift

func tripleProduct(_ b: Self, _ c: Self) -> Self


                    
                    
                    winding(_:_:_:)

Default implementation

Returns the winding value of the three given input points.

Winding indicates whether the vectors are clockwise (> 0), colinear (== 0), or counter-clockwise (< 0)

Default Implementation

Returns the winding value of the three given input points.

Winding indicates whether the vectors are clockwise (> 0), colinear (== 0), or counter-clockwise (< 0)

Declaration

Swift

static func winding(_ p0: Self, _ p1: Self, _ p2: Self) -> Scalar


                    
                    
                    areClockwise(_:_:_:)

Extension method

Returns true if the three given input points are wound in clockwise order.

Declaration

Swift

@inlinable
static func areClockwise(_ p0: Self, _ p1: Self, _ p2: Self) -> Bool where Self.Scalar : Comparable