ray

Documentation

Overview

Package ray provides an implementation of a ray in 3D space, and intersections with surfaces

Index

• type Intersection
• type Ray
  • func New(start maths.Vec3, direction maths.Vec3, depth int) *Ray
  • func (r *Ray) Init()
  • func (r *Ray) String() string

Types

type Intersection

type Intersection struct {
	Point     *maths.Vec3
	Incoming  *Ray
	Material  int
	Distance  float64
	U, V      float64
	Normal    *maths.Vec3
	SurfaceOx *maths.Vec3
	SurfaceOy *maths.Vec3
}

Intersection represents a point on a surface struck by a ray

type Ray

type Ray struct {
	Start     maths.Vec3
	Direction maths.Vec3
	Depth     int
	Inverse   [3]float64
}

Ray is defined by its start, direction and depth which indicates how many materials it has passed through

func New

func New(start maths.Vec3, direction maths.Vec3, depth int) *Ray

New returns new ray

func (*Ray) Init

func (r *Ray) Init()

Init fills the Inverse field of ray

func (*Ray) String

func (r *Ray) String() string

String returns the string representation of the ray in the form of "<start> -> <direction>"