primitives

Documentation

Index

• Variables
• type Camera
  • func NewCamera() *Camera
  • func (c *Camera) Direction(position Vector) Vector
  • func (c *Camera) Position(u, v float64) Vector
  • func (c *Camera) RayAt(u, v float64) Ray
• type Dielectric
  • func (d Dielectric) Bounce(input Ray, record HitRecord, rand *rand.Rand) (bool, Ray)
  • func (d Dielectric) Color() Vector
• type HitRecord
• type Hitable
• type Lambertian
  • func (l Lambertian) Bounce(input Ray, record HitRecord, rand *rand.Rand) (bool, Ray)
  • func (l Lambertian) Color() Vector
• type Material
• type Metal
  • func (m Metal) Bounce(input Ray, record HitRecord, rand *rand.Rand) (bool, Ray)
  • func (m Metal) Color() Vector
• type Ray
  • func (r Ray) Point(t float64) Vector
• type Sphere
  • func (s *Sphere) Hit(r Ray, tMin, tMax float64) (bool, HitRecord)
• type Vector
  • func VectorInUnitSphere(rand *rand.Rand) Vector
  • func (u Vector) Add(v Vector) Vector
  • func (u Vector) AddScalar(a float64) Vector
  • func (u Vector) DivideScalar(a float64) Vector
  • func (u Vector) DotProduct(v Vector) float64
  • func (u Vector) Length() float64
  • func (u Vector) Multiply(v Vector) Vector
  • func (u Vector) MultiplyScalar(a float64) Vector
  • func (u Vector) Normalise() Vector
  • func (u Vector) RGBA() (r, g, b, a uint32)
  • func (u Vector) Reflect(n Vector) Vector
  • func (u Vector) Refract(normal Vector, ni_over_nt float64) (bool, Vector)
  • func (u Vector) Subtract(v Vector) Vector
• type World
  • func (w *World) Add(hitable Hitable)
  • func (w *World) Hit(r Ray, tMin, tMax float64) (bool, HitRecord)

Variables

var UnitVector = Vector{1, 1, 1}

Types

type Camera

type Camera struct {
	// contains filtered or unexported fields
}

func NewCamera

func NewCamera() *Camera

func (*Camera) Direction

func (c *Camera) Direction(position Vector) Vector

func (*Camera) Position

func (c *Camera) Position(u, v float64) Vector

func (*Camera) RayAt

func (c *Camera) RayAt(u, v float64) Ray

type Dielectric

type Dielectric struct {
	C               Vector
	RefractiveIndex float64
}

func (Dielectric) Bounce

func (d Dielectric) Bounce(input Ray, record HitRecord, rand *rand.Rand) (bool, Ray)

func (Dielectric) Color

func (d Dielectric) Color() Vector

type HitRecord

type HitRecord struct {
	Time          float64
	Point, Normal Vector
	Material
}

type Hitable

type Hitable interface {
	Hit(r Ray, tMin, tMax float64) (bool, HitRecord)
}

type Lambertian

type Lambertian struct {
	C Vector
}

func (Lambertian) Bounce

func (l Lambertian) Bounce(input Ray, record HitRecord, rand *rand.Rand) (bool, Ray)

func (Lambertian) Color

func (l Lambertian) Color() Vector

type Material

type Material interface {
	Bounce(ray Ray, hit HitRecord, rand *rand.Rand) (bool, Ray)
	Color() Vector
}

type Metal

type Metal struct {
	C    Vector
	Fuzz float64
}

func (Metal) Bounce

func (m Metal) Bounce(input Ray, record HitRecord, rand *rand.Rand) (bool, Ray)

func (Metal) Color

func (m Metal) Color() Vector

type Ray

type Ray struct {
	Origin, Direction Vector
}

func (Ray) Point

func (r Ray) Point(t float64) Vector

type Sphere

type Sphere struct {
	Center Vector
	Radius float64
	Material
}

func (*Sphere) Hit

func (s *Sphere) Hit(r Ray, tMin, tMax float64) (bool, HitRecord)

type Vector

type Vector struct {
	X, Y, Z float64
}

func VectorInUnitSphere

func VectorInUnitSphere(rand *rand.Rand) Vector

func (Vector) Add

func (u Vector) Add(v Vector) Vector

func (Vector) AddScalar

func (u Vector) AddScalar(a float64) Vector

func (Vector) DivideScalar

func (u Vector) DivideScalar(a float64) Vector

func (Vector) DotProduct

func (u Vector) DotProduct(v Vector) float64

func (Vector) Length

func (u Vector) Length() float64

func (Vector) Multiply

func (u Vector) Multiply(v Vector) Vector

func (Vector) MultiplyScalar

func (u Vector) MultiplyScalar(a float64) Vector

func (Vector) Normalise

func (u Vector) Normalise() Vector

func (Vector) RGBA

func (u Vector) RGBA() (r, g, b, a uint32)

func (Vector) Reflect

func (u Vector) Reflect(n Vector) Vector

func (Vector) Refract

func (u Vector) Refract(normal Vector, ni_over_nt float64) (bool, Vector)

func (Vector) Subtract

func (u Vector) Subtract(v Vector) Vector

type World

type World struct {
	Elements []Hitable
}

func (*World) Add

func (w *World) Add(hitable Hitable)

func (*World) Hit

func (w *World) Hit(r Ray, tMin, tMax float64) (bool, HitRecord)