hit

Documentation

Index

• type Area
  • func NewArea(min, max Point) *Area
  • func (a *Area) Add(min, max Point, obj TestableObj)
  • func (a *Area) Delete(obj TestableObj)
  • func (a *Area) Test(p Point) TestableObj
• type Point
  • func (p Point) Sub(in Point) Point
• type TestableObj

Types

type Area

type Area struct {
	// contains filtered or unexported fields
}

Area encapsulates a hit testing region.

func NewArea

func NewArea(min, max Point) *Area

func (*Area) Add

func (a *Area) Add(min, max Point, obj TestableObj)

Add inserts the given object into the hit testing area.

func (*Area) Delete

func (a *Area) Delete(obj TestableObj)

Delete removes an object from the hit testing arena.

func (*Area) Test

func (a *Area) Test(p Point) TestableObj

Test computes the topmost object which intersects the given point.

type Point

type Point struct {
	X, Y float64
}

func (Point) Sub

func (p Point) Sub(in Point) Point

type TestableObj

type TestableObj interface {
	HitTest(Point) bool
}