math

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Versions in this module

v0

v0.12.1

Jul 10, 2025

Changes in this version

+ const FourOverPi

+ const Inv2Pi

+ const Inv4Pi

+ const InvPi

+ const PiOver2

+ const PiOver4

+ const Sqrt2

+ var Infinity float32 = float32(gomath.Inf(1))

+ func Atan(xFull float32) float32

+ func BitsToFloat(ui uint32) float32

+ func Exponent(v float32) int

+ func FastExp(x float32) float32

+ func FloatToBits(f float32) uint32

+ func SegmentSegmentIntersect(p1, p2, p3, p4 [2]float32) ([2]float32, bool)

+ func SignBit(v float32) bool

+ func Significand(v float32) int

+ func SinCos(xFull float32) [2]float32

v0.12.0

May 27, 2025

Changes in this version

+ func ConvexHull(points [][2]float32) [][2]float32

+ func Pi() float32

v0.11.10

Apr 15, 2025

v0.11.9

Mar 22, 2025

Changes in this version

+ func HeadingSignedTurn(cur, target float32) float32

+ func NMDistance2LLFast(a Point2LL, b Point2LL, nmPerLongitude float32) float32

type Extent2D

+ func Extent2DFromP2LLs(pts []Point2LL) Extent2D

v0.11.8

Feb 19, 2025

v0.11.7

Feb 1, 2025

v0.11.6

Oct 22, 2024

Changes in this version

type Point2LL

+ func Offset2LL(pll Point2LL, hdg float32, dist float32, nmPerLongitude float32) Point2LL

v0.11.5

Sep 21, 2024

v0.11.4

Aug 24, 2024

v0.11.3

Aug 17, 2024

v0.11.2

Aug 14, 2024

v0.11.1

Aug 4, 2024

v0.11.0

Jul 31, 2024

Changes in this version

+ const East

+ const FeetToNauticalMiles

+ const NMPerLatitude

+ const NauticalMilesToFeet

+ const North

+ const NorthEast

+ const NorthWest

+ const South

+ const SouthEast

+ const SouthWest

+ const West

+ func Abs[V constraints.Integer | constraints.Float](x V) V

+ func Add2f(a [2]float32, b [2]float32) [2]float32

+ func AngleBetween(v1, v2 [2]float32) float32

+ func Atan2(y, x float32) float32

+ func Ceil(v float32) float32

+ func CirclePoints(nsegs int) [][2]float32

+ func Clamp[T constraints.Ordered](x T, low T, high T) T

+ func ClosestPointOnLine(line [2][2]float32, p [2]float32) [2]float32

+ func Compass(heading float32) string

+ func Cos(a float32) float32

+ func Degrees(r float32) float32

+ func Distance2f(a [2]float32, b [2]float32) float32

+ func Dot(a, b [2]float32) float32

+ func EquilateralTriangleVertices(height float32) [3][2]float32

+ func Exp(x float32) float32

+ func Floor(v float32) float32

+ func GCD(a, b int) int

+ func GenRange[T constraints.Integer | constraints.Float](low, high, step T) []T

+ func Heading2LL(from Point2LL, to Point2LL, nmPerLongitude float32, magCorrection float32) float32

+ func HeadingAsHour(heading float32) int

+ func HeadingDifference(a float32, b float32) float32

+ func LCM(a, b int) int

+ func LL2NM(p Point2LL, nmPerLongitude float32) [2]float32

+ func Length2f(v [2]float32) float32

+ func Lerp(x, a, b float32) float32

+ func Lerp2f(x float32, a [2]float32, b [2]float32) [2]float32

+ func LineLineIntersect(p1f, p2f, p3f, p4f [2]float32) ([2]float32, bool)

+ func Max[T constraints.Ordered](a, b T) T

+ func Mid2f(a [2]float32, b [2]float32) [2]float32

+ func Min[T constraints.Ordered](a, b T) T

+ func Mod(a, b float32) float32

+ func NMDistance2LL(a Point2LL, b Point2LL) float32

+ func NMLength2LL(a Point2LL, nmPerLongitude float32) float32

+ func NMPerLongitude(p Point2LL) float32

+ func Normalize2f(a [2]float32) [2]float32

+ func NormalizeHeading(h float32) float32

+ func OppositeHeading(h float32) float32

+ func Overlaps(a Extent2D, b Extent2D) bool

+ func PointInPolygon(p [2]float32, pts [][2]float32) bool

+ func PointInPolygon2LL(p Point2LL, pts []Point2LL) bool

+ func PointLineDistance(p, p0, p1 [2]float32) float32

+ func PointSegmentDistance(p, v, w [2]float32) float32

+ func Pow(a, b float32) float32

+ func Radians(d float32) float32

+ func RayRayMinimumDistance(p0, d0, p1, d1 [2]float32) float32

+ func Rotator2f(angle float32) func([2]float32) [2]float32

+ func SafeACos(a float32) float32

+ func SafeASin(a float32) float32

+ func Scale2f(a [2]float32, s float32) [2]float32

+ func SetLocationResolver(r LocationResolver)

+ func ShortCompass(heading float32) string

+ func Sign(v float32) float32

+ func SignedPointLineDistance(p, p0, p1 [2]float32) float32

+ func Sin(a float32) float32

+ func Sqr[V constraints.Integer | constraints.Float](v V) V

+ func Sqrt(a float32) float32

+ func Sub2f(a [2]float32, b [2]float32) [2]float32

+ func Tan(a float32) float32

+ type CardinalOrdinalDirection int

+ func ParseCardinalOrdinalDirection(s string) (CardinalOrdinalDirection, error)

+ func (co CardinalOrdinalDirection) Heading() float32

+ func (co CardinalOrdinalDirection) ShortString() string

+ type Extent2D struct

+ P0 [2]float32

+ P1 [2]float32

+ func EmptyExtent2D() Extent2D

+ func Extent2DFromPoints(pts [][2]float32) Extent2D

+ func Union(e Extent2D, p [2]float32) Extent2D

+ func (e Extent2D) Center() [2]float32

+ func (e Extent2D) ClosestPointInBox(p [2]float32) [2]float32

+ func (e Extent2D) Expand(d float32) Extent2D

+ func (e Extent2D) Height() float32

+ func (e Extent2D) Inside(p [2]float32) bool

+ func (e Extent2D) IntersectRay(org, dir [2]float32) (bool, float32, float32)

+ func (e Extent2D) Lerp(p [2]float32) [2]float32

+ func (e Extent2D) Offset(p [2]float32) Extent2D

+ func (e Extent2D) Scale(s float32) Extent2D

+ func (e Extent2D) Width() float32

+ type LocationResolver interface

+ Resolve func(s string) (Point2LL, error)

+ type Matrix3 [3][3]float32

+ func Identity3x3() Matrix3

+ func MakeMatrix3(m00, m01, m02, m10, m11, m12, m20, m21, m22 float32) Matrix3

+ func (m Matrix3) Determinant() float32

+ func (m Matrix3) Inverse() Matrix3

+ func (m Matrix3) Ortho(x0, x1, y0, y1 float32) Matrix3

+ func (m Matrix3) PostMultiply(m2 Matrix3) Matrix3

+ func (m Matrix3) Rotate(theta float32) Matrix3

+ func (m Matrix3) Scale(x, y float32) Matrix3

+ func (m Matrix3) TransformPoint(p [2]float32) [2]float32

+ func (m Matrix3) TransformVector(p [2]float32) [2]float32

+ func (m Matrix3) Translate(x, y float32) Matrix3

+ type Point2LL [2]float32

+ func Add2LL(a Point2LL, b Point2LL) Point2LL

+ func Mid2LL(a Point2LL, b Point2LL) Point2LL

+ func NM2LL(p [2]float32, nmPerLongitude float32) Point2LL

+ func ParseLatLong(llstr []byte) (Point2LL, error)

+ func Sub2LL(a Point2LL, b Point2LL) Point2LL

+ func (p *Point2LL) UnmarshalJSON(b []byte) error

+ func (p Point2LL) DDString() string

+ func (p Point2LL) DMSString() string

+ func (p Point2LL) IsZero() bool

+ func (p Point2LL) Latitude() float32

+ func (p Point2LL) Longitude() float32

+ func (p Point2LL) MarshalJSON() ([]byte, error)

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