components

package
v0.0.0-...-a545287 Latest Latest
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 Go to latest Published: Jul 18, 2022 License: MIT Imports: 18 Imported by: 0

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Constants

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const BOTTOM float64 = 90
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const BOTTOM_LEFT float64 = 135
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const BOTTOM_RIGHT float64 = 45
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const LEFT float64 = 180
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const RIGHT float64 = 0
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const TOP float64 = 270
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const TOP_LEFT float64 = 225
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const TOP_RIGHT float64 = 315

Variables

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var ColorBlack color.Color = color.RGBA{R: 0x00, G: 0x00, B: 0x00, A: 0xff}
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var ColorBlue color.Color = color.RGBA{R: 0x00, G: 0x00, B: 0xff, A: 0xff}
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var ColorGreen color.Color = color.RGBA{R: 0x00, G: 0xff, B: 0x00, A: 0xff}
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var ColorRed color.Color = color.RGBA{R: 0xff, G: 0x00, B: 0x00, A: 0xff}
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var ColorViolet color.Color = color.RGBA{R: 0xff, G: 0x00, B: 0xff, A: 0xff}
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var ColorWhite color.Color = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
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var ColorYellow color.Color = color.RGBA{R: 0xff, G: 0xff, B: 0x00, A: 0xff}
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var ImagesSuffixes = []string{".jpg", ".png", ".gif"}
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var None = Origin
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var Origin = Point{}
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var Random = rand.New(randomSource)

Functions

func DegToRad 

func DegToRad(x float64) float64

func DirectionToFloatingPoint 

func DirectionToFloatingPoint(direction float64) FloatingPoint

Cartesian coordinates from angle (degrees)

func Float64Between 

func Float64Between(low, high float64) float64

func FloatingPointToDirection 

func FloatingPointToDirection(point FloatingPoint) float64

Angle (degrees) from cartesian coordinates

func HsvToRgb 

func HsvToRgb(hue, saturation, value float64) (r, g, b int)

0 ≤ hue < 360, 0 ≤ saturation ≤ 1 and 0 ≤ value ≤ 1

func Int64Between 

func Int64Between(low, high int64) int64

func OneOrMinusOne 

func OneOrMinusOne() float64

func RadToDeg 

func RadToDeg(x float64) float64

func RandomFile 

func RandomFile(dir string, suffixes []string) (*string, error)

func ReadBeanGif 

func ReadBeanGif() (*[]image.Image, *[]time.Duration, *image.Rectangle)

func ReadGif 

func ReadGif(imgPath *string, targetSize Point) (*[]image.Image, *[]time.Duration, *image.Rectangle)

func ReadJpg 

func ReadJpg(imgPath *string) *image.Image

func ReadPng 

func ReadPng(imgPath *string) *image.Image

func Rotate 

func Rotate(p, o Point, degrees float64) Point

func RotateOrigin 

func RotateOrigin(fp FloatingPoint, degrees float64) FloatingPoint

func TimeToText 

func TimeToText(t time.Time) string

Types

type Acceleration 

type Acceleration interface {
	// Returns (dVx, dVy) in Pixels per second
	NextVelocityDelta(dtInSeconds float64) FloatingPoint
	// Direction in Degrees, reference is RIGHT
	Direction() float64
}
var Gravity Acceleration = ConstantAcceleration{/* contains filtered or unexported fields */}

type Component 

type Component interface {
	Updatable
	Drawable
}

type CompositeDrawable 

type CompositeDrawable struct {
	Graphic   *Graphic
	Drawables []*disablableDrawable
}

func NewCompositeDrawable 

func NewCompositeDrawable(graphic *Graphic) *CompositeDrawable

func (*CompositeDrawable) AddDrawable 

func (cd *CompositeDrawable) AddDrawable(drawable Drawable)

func (*CompositeDrawable) AddDrawables 

func (cd *CompositeDrawable) AddDrawables(drawables ...Drawable)

func (*CompositeDrawable) DisableDrawable 

func (cd *CompositeDrawable) DisableDrawable(drawable Drawable)

func (*CompositeDrawable) Draw 

func (cd *CompositeDrawable) Draw(canvas canvas.Canvas) error

func (*CompositeDrawable) EnableDrawable 

func (cd *CompositeDrawable) EnableDrawable(drawable Drawable)

func (*CompositeDrawable) RemoveDrawable 

func (cd *CompositeDrawable) RemoveDrawable(d Drawable)

type ConstantAcceleration 

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

func NewConstantAcceleration 

func NewConstantAcceleration(acceleration, direction float64) *ConstantAcceleration

func (ConstantAcceleration) Direction 

func (a ConstantAcceleration) Direction() float64

func (ConstantAcceleration) NextVelocityDelta 

func (a ConstantAcceleration) NextVelocityDelta(dtInSeconds float64) FloatingPoint

func (ConstantAcceleration) SetAcceleration 

func (a ConstantAcceleration) SetAcceleration(acceleration float64)

func (ConstantAcceleration) SetDirection 

func (a ConstantAcceleration) SetDirection(direction float64)

type Drawable 

type Drawable interface {
	Draw(canvas Canvas) error
}

func MaskDrawable 

func MaskDrawable(mask effect.Effect, drawable Drawable) Drawable

type Graphic 

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

func NewGraphic 

func NewGraphic(parent *Graphic, layout *Layout) *Graphic

func NewOffsetGraphic 

func NewOffsetGraphic(parent *Graphic, layout *Layout, offset Point) *Graphic

func (*Graphic) ComputedOffset 

func (g *Graphic) ComputedOffset() Point

func (*Graphic) Layout 

func (g *Graphic) Layout() *Layout

func (*Graphic) SetOffset 

func (g *Graphic) SetOffset(offset Point)

type Layout 

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

func DefaultLayout 

func DefaultLayout() *Layout

func NewLayout 

func NewLayout(fColor, bgColor color.Color) *Layout

func (*Layout) BackgroundColor 

func (l *Layout) BackgroundColor() color.Color

func (*Layout) Color 

func (l *Layout) Color() color.Color

func (*Layout) SetColor 

func (l *Layout) SetColor(color color.Color)

type MaskedDrawable 

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

func (MaskedDrawable) Draw 

func (md MaskedDrawable) Draw(canvas Canvas) error

override Drawable.Draw method to perform indirection with effect

type Movement 

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

func NewBoundedMovement 

func NewBoundedMovement(initialPosition, initialVelocity FloatingPoint, accelerations *[]Acceleration, bounds *image.Rectangle) *Movement

func NewMovement 

func NewMovement(initialPosition, initialVelocity FloatingPoint, accelerations *[]Acceleration) *Movement

func (*Movement) NextPosition 

func (m *Movement) NextPosition(duration time.Duration) (FloatingPoint, FloatingPoint)

TODO: consider max values for accelerations Return the next position to use

func (*Movement) SetVelocity 

func (m *Movement) SetVelocity(velocity FloatingPoint)

func (*Movement) Velocity 

func (m *Movement) Velocity() FloatingPoint

type Physics 

type Physics interface {
	// Compute and return the next position and velocity
	NextPosition(dt time.Duration) (FloatingPoint, FloatingPoint)
}

type Updatable 

type Updatable interface {
	// Update is called at its own rate to avoid depending on rendering time,
	// thus we can compute speed depending on this constant rate
	Update(elapsedBetweenUpdate time.Duration) bool
}

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