shape

Documentation

Index

• Constants
• type Quadrilateral
  • func NewQuadrilateral(vertices [4]geometry.Vector) Quadrilateral
  • func (quad Quadrilateral) CheckForCollision(ray geometry.Ray) (Shape, float64)
  • func (quad Quadrilateral) RandomLocationOn() geometry.Vector
  • func (quad Quadrilateral) String() string
• type Shape
• type Sphere
  • func (sphere Sphere) CheckForCollision(ray geometry.Ray) (Shape, float64)
  • func (s Sphere) NormalAtLocation(loc geometry.Vector) geometry.Vector
  • func (s Sphere) RandomLocationOn() geometry.Vector
  • func (sphere Sphere) String() string
• type Triangle
  • func (triangle Triangle) Area() float64
  • func (triangle Triangle) CheckForCollision(ray geometry.Ray) (Shape, float64)
  • func (triangle Triangle) NormalAtLocation(loc geometry.Vector) geometry.Vector
  • func (triangle Triangle) RandomLocationOn() geometry.Vector
  • func (triangle Triangle) String() string

Constants

const EPSILON = 0.000000001

Types

type Quadrilateral

type Quadrilateral struct {
	Shape
	Vertices [4]geometry.Vector
	// contains filtered or unexported fields
}

func NewQuadrilateral

func NewQuadrilateral(vertices [4]geometry.Vector) Quadrilateral

func (Quadrilateral) CheckForCollision

func (quad Quadrilateral) CheckForCollision(ray geometry.Ray) (Shape, float64)

func (Quadrilateral) RandomLocationOn

func (quad Quadrilateral) RandomLocationOn() geometry.Vector

func (Quadrilateral) String

func (quad Quadrilateral) String() string

type Shape

type Shape interface {
	// CheckForCollision determines if a Ray collides with this shape
	CheckForCollision(ray geometry.Ray) (Shape, float64)

	// NormalAtLocation calculates the normal vector at a given location on this shape
	NormalAtLocation(loc geometry.Vector) geometry.Vector

	// RandomLocationOn return a random location on the surface of the shape
	RandomLocationOn() geometry.Vector
}

Shape represents a shape in 3D space

type Sphere

type Sphere struct {
	Shape
	Center geometry.Vector
	Radius float64
}

func (Sphere) CheckForCollision

func (sphere Sphere) CheckForCollision(ray geometry.Ray) (Shape, float64)

func (Sphere) NormalAtLocation

func (s Sphere) NormalAtLocation(loc geometry.Vector) geometry.Vector

func (Sphere) RandomLocationOn

func (s Sphere) RandomLocationOn() geometry.Vector

func (Sphere) String

func (sphere Sphere) String() string

type Triangle

type Triangle struct {
	Shape
	Vertices [3]geometry.Vector
	// contains filtered or unexported fields
}

func (Triangle) Area

func (triangle Triangle) Area() float64

Area calculates the area of the triangle

func (Triangle) CheckForCollision

func (triangle Triangle) CheckForCollision(ray geometry.Ray) (Shape, float64)

func (Triangle) NormalAtLocation

func (triangle Triangle) NormalAtLocation(loc geometry.Vector) geometry.Vector

func (Triangle) RandomLocationOn

func (triangle Triangle) RandomLocationOn() geometry.Vector

func (Triangle) String

func (triangle Triangle) String() string