geo

Documentation

Index

• type Ray
  • func (r Ray) At(t float64) r3.Vector

Types

type Ray

type Ray struct {
	Origin    r3.Vector
	Direction r3.Vector
}

A parametrized curve (in our case, a straight line) which starts from an origin with direction in R3.

func (Ray) At

func (r Ray) At(t float64) r3.Vector

At returns the vector (at t) in R3 for a ray parametrized by r = a + tb, where a is `r.Origin` and b is `r.Direction`.