graphics

Documentation

Index

• Constants
• type ArcBall
  • func NewArcBall() *ArcBall
  • func (ab *ArcBall) GetMatrix() *smath.Matrix4
  • func (ab *ArcBall) GetRotationFromAxisAngle(aa *smath.AxisAngle)
  • func (ab *ArcBall) Mouse(mp *smath.Vector3)
  • func (ab *ArcBall) Place(v *smath.Vector3, r float64)
  • func (ab *ArcBall) Update()

Constants

const (
	LGNSegs = 4
	NSEGS   = 1 << LGNSegs
)

Types

type ArcBall

type ArcBall struct {
	Radius float64
	// contains filtered or unexported fields
}

ArcBall is a basic camera control

func NewArcBall

func NewArcBall() *ArcBall

NewArcBall creates Ken's arc ball

func (*ArcBall) GetMatrix

func (ab *ArcBall) GetMatrix() *smath.Matrix4

GetMatrix returns the ball's equivalent matrix

func (*ArcBall) GetRotationFromAxisAngle

func (ab *ArcBall) GetRotationFromAxisAngle(aa *smath.AxisAngle)

GetRotationFromAxisAngle gets the arcball's rotation in radians.

func (*ArcBall) Mouse

func (ab *ArcBall) Mouse(mp *smath.Vector3)

Mouse incorporatea the given mouse position.

func (*ArcBall) Place

func (ab *ArcBall) Place(v *smath.Vector3, r float64)

Place sets the center and size of the controller.

func (*ArcBall) Update

func (ab *ArcBall) Update()

Update updates the arcball