viewfinder

Documentation

Index

• type ViewFinder
  • func (vf ViewFinder) RealToViewFinder(input vect.Vect) (output pixel.Vec)
  • func (vf *ViewFinder) Reset()
  • func (vf *ViewFinder) SetOffset(offset pixel.Vec)
  • func (vf *ViewFinder) SetScale(scale float64)
  • func (vf ViewFinder) ViewFinderToReal(input pixel.Vec) (output vect.Vect)

Types

type ViewFinder

type ViewFinder struct {
	Offset pixel.Vec
	Scale  float64
}

ViewFinder allows the user to zoom or move the view on the field

func (ViewFinder) RealToViewFinder

func (vf ViewFinder) RealToViewFinder(input vect.Vect) (output pixel.Vec)

RealToViewFinder converts a set of real coordinates to coordinates on the screen

func (*ViewFinder) Reset

func (vf *ViewFinder) Reset()

Reset resets the viewfinder settings

func (*ViewFinder) SetOffset

func (vf *ViewFinder) SetOffset(offset pixel.Vec)

SetOffset sets an offset for viewing the field

func (*ViewFinder) SetScale

func (vf *ViewFinder) SetScale(scale float64)

SetScale zooms in or out of the field

func (ViewFinder) ViewFinderToReal

func (vf ViewFinder) ViewFinderToReal(input pixel.Vec) (output vect.Vect)

ViewFinderToReal converts a set of coordinates on the screen to real coordinates