scene

package
v0.3.8 Latest Latest
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 Go to latest Published: Nov 11, 2026 License: GPL-3.0 Imports: 7 Imported by: 0

Documentation

Overview

Package scene defines the portable, executable-code-free On Air document v1.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Ease 

func Ease(name string, u, energy float64) float64

func Eval 

func Eval(v Value, b Bindings, t float64) any

func HasLiveSlots 

func HasLiveSlots(d Document) bool

HasLiveSlots reports whether d's layer tree references any live programme, lineup, or viewer slot (or a daytime-adaptable tonight heading).

func IsLiveSlotKey 

func IsLiveSlotKey(k string) bool

IsLiveSlotKey reports whether a scene binding key carries dynamic programme, lineup, schedule, or viewer state that must never be baked into per-title cached masters on disk.

func Number 

func Number(v any, fallback float64) float64

func RewriteLineupHeading 

func RewriteLineupHeading(d *Document, heading string)

RewriteLineupHeading updates the baked "TONIGHT" / "{words.tonight}" heading on lineup overlays so daytime airings read "COMING UP" while reusing the look's single cached base master.

func SplitSlotLayers 

func SplitSlotLayers(d Document) (base Document, overlay Document, splittable bool)

SplitSlotLayers separates a live-slot scene into a slot-free animated base document (cached once per look) and a live foreground overlay document (composited in real time at air time). If animated procedural layers or non-normal blend modes sit above a slot layer, splittable is false and the caller renders the full scene live each airing with no disk save.

Types

type Audio 

type Audio struct {
	Generator string `json:"generator"`
	Seed      uint32 `json:"seed,omitempty"`
}

type Behavior 

type Behavior struct {
	Typewriter *Params `json:"typewriter,omitempty"`
	Flicker    *Params `json:"flicker,omitempty"`
	Wiggle     *Params `json:"wiggle,omitempty"`
	Bounce     *Params `json:"bounce,omitempty"`
	Glint      *Params `json:"glint,omitempty"`
	Chroma     *Params `json:"chroma,omitempty"`
	Drift      *Params `json:"drift,omitempty"`
	Pop        *Params `json:"pop,omitempty"`
	Squash     *Params `json:"squash,omitempty"`
}

type Bindings 

type Bindings struct {
	Tokens map[string]any    `json:"tokens,omitempty"`
	Slots  map[string]string `json:"slots,omitempty"`
}

func (Bindings) Number 

func (b Bindings) Number(k string, fallback float64) float64

func (Bindings) Resolve 

func (b Bindings) Resolve(s string) string

type Cost 

type Cost struct {
	Layers    int
	Particles int
	Blur      float64
	Duration  float64
}

type Document 

type Document struct {
	Audio    *Audio   `json:"audio,omitempty"`
	V        int      `json:"v"`
	Moment   string   `json:"moment"`
	Duration float64  `json:"duration"`
	Poster   float64  `json:"poster"`
	Slots    []string `json:"slots,omitempty"`
	Layers   []Layer  `json:"layers"`
	Post     []Effect `json:"post,omitempty"`
}

func Decode 

func Decode(data []byte) (Document, error)

func StandbyBase 

func StandbyBase(d Document) (Document, bool)

StandbyBase derives a clean, text-free animated loop document from a look's break or ident scene so holding on a warming segment never shows a still.

func (Document) Estimate 

func (d Document) Estimate() Cost

func (Document) StaticForeground 

func (d Document) StaticForeground() (Document, bool)

StaticForeground separates a full-frame analogue background from its prepared foreground. Such scenes air over a live Signal engine instead of a clip loop.

func (Document) Validate 

func (d Document) Validate() error

type Effect 

type Effect struct {
	Type   string `json:"type"`
	Amount Value  `json:"amount"`
	Seed   uint32 `json:"seed,omitempty"`
}

type Layer 

type Layer struct {
	Name        string     `json:"name,omitempty"`
	Hidden      bool       `json:"hidden,omitempty"`
	Locked      bool       `json:"locked,omitempty"`
	Start       float64    `json:"start,omitempty"`
	End         float64    `json:"end,omitempty"`
	ID          string     `json:"id"`
	Type        string     `json:"type"`
	X           Value      `json:"x,omitempty"`
	Y           Value      `json:"y,omitempty"`
	W           Value      `json:"w,omitempty"`
	H           Value      `json:"h,omitempty"`
	Scale       Value      `json:"scale,omitempty"`
	ScaleX      Value      `json:"scaleX,omitempty"`
	ScaleY      Value      `json:"scaleY,omitempty"`
	Rotate      Value      `json:"rotate,omitempty"`
	Opacity     Value      `json:"opacity,omitempty"`
	Fill        Value      `json:"fill,omitempty"`
	Stroke      Value      `json:"stroke,omitempty"`
	StrokeWidth Value      `json:"strokeWidth,omitempty"`
	Join        string     `json:"join,omitempty"`
	Cap         string     `json:"cap,omitempty"`
	FillRule    string     `json:"fillRule,omitempty"`
	Path        string     `json:"path,omitempty"`
	Clip        string     `json:"clip,omitempty"`
	Text        Value      `json:"text,omitempty"`
	Font        Value      `json:"font,omitempty"`
	Size        Value      `json:"size,omitempty"`
	Weight      int        `json:"weight,omitempty"`
	Track       Value      `json:"track,omitempty"`
	Align       string     `json:"align,omitempty"`
	MaxWidth    float64    `json:"maxWidth,omitempty"`
	Fit         string     `json:"fit,omitempty"`
	MaxLines    int        `json:"maxLines,omitempty"`
	Src         Value      `json:"src,omitempty"`
	Tint        Value      `json:"tint,omitempty"`
	TintBlend   string     `json:"tintBlend,omitempty"`
	Blend       string     `json:"blend,omitempty"`
	Blur        float64    `json:"blur,omitempty"`
	Glow        float64    `json:"glow,omitempty"`
	Count       int        `json:"count,omitempty"`
	Seed        uint32     `json:"seed,omitempty"`
	Repeat      int        `json:"repeat,omitempty"`
	Behave      []Behavior `json:"behave,omitempty"`
	Reveal      *Reveal    `json:"reveal,omitempty"`
	Layers      []Layer    `json:"layers,omitempty"`
}

type Params 

type Params struct {
	Start     float64 `json:"start,omitempty"`
	Step      float64 `json:"step,omitempty"`
	Amplitude float64 `json:"amplitude,omitempty"`
	Speed     float64 `json:"speed,omitempty"`
	Seed      uint32  `json:"seed,omitempty"`
}

type Reveal 

type Reveal struct {
	Out  bool    `json:"out,omitempty"`
	Wipe string  `json:"wipe"`
	From float64 `json:"from"`
	To   float64 `json:"to"`
	Ease string  `json:"ease,omitempty"`
}

type Value 

type Value = any

Source Files

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