camera

Documentation

Index

• Constants
• type Camera
  • func NewCamera(pos vector.Vec) Camera
  • func (cam *Camera) CopyFront(a vector.Vec)
  • func (cam *Camera) FrontVec() vector.Vec
  • func (cam *Camera) Log()
  • func (cam *Camera) Rotate(axis vector.Vec, angle float32)
  • func (cam *Camera) RotateFPS(rot vector.Vec)
  • func (cam *Camera) Translate(vec vector.Vec)
  • func (cam *Camera) Transpose() matrix.Mat
  • func (cam *Camera) Update() matrix.Mat

Constants

const (
	YAW = -90.0
	RAD = 0.0174532925
	PI  = 3.1415729
)

Types

type Camera

type Camera struct {
	Transform  transform.Transform
	ViewMatrix matrix.Mat
	Pos        vector.Vec
	Rot        vector.Vec
	Front      vector.Vec
	Exposure   float32
}

Camera World Identity View Matrix Performs TMRT^ Normalize Operation for matrix construction

func NewCamera

func NewCamera(pos vector.Vec) Camera

Camera FPS Euler Decomposition Matrix

func (*Camera) CopyFront

func (cam *Camera) CopyFront(a vector.Vec)

Updates matrix 4 vec for front from the 3 vec

func (*Camera) FrontVec

func (cam *Camera) FrontVec() vector.Vec

Return Size 3 Vector from the 4 Stored vector

func (*Camera) Log

func (cam *Camera) Log()

func (*Camera) Rotate

func (cam *Camera) Rotate(axis vector.Vec, angle float32)

Rotates camera around a give unit axis

func (*Camera) RotateFPS

func (cam *Camera) RotateFPS(rot vector.Vec)

RotateFPS treats camera rotation as a rotation of its front facing direction

around a fixed up axis and arbitrary and calculated X (right) axis

func (*Camera) Translate

func (cam *Camera) Translate(vec vector.Vec)

Updates the camera view matrix with a translation from an approrpiately scaled vector

func (*Camera) Transpose

func (cam *Camera) Transpose() matrix.Mat

Calculates transpose

func (*Camera) Update

func (cam *Camera) Update() matrix.Mat

Returns the inverse camera view matrix for scene usage