readme.MD

Simple rendering engine

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Background (1 min read)

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Composition:

class Composition(NamedTuple):
    resolution: Resolution
    framerate: Framerate
    duration: Duration
    data: List[Layer]

Layer:

class Layer(NamedTuple):
    layer_type: ClipType
    layer_name: Name
    layer_args: ARGS

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Executer:

class CompositionExecuter:
    
    def __init__(CompositionReader, CompositionRenderer)
    
    def execute(Composition):
        validated_data = reader.validate(composition)
        await renderer.render(validated_data)
    

Renderer:

class CompositionRenderer:
    
    def __init__(LayerRenderer)
        
    def render(CompositionSpec):
        instatiate each layer using _module_  
        ...    
        process the composition rendering 

Reader:

class CompositionReader(CompositionProvider):
    
    def __init__(LayerReader)
        
    def provide_composition_spec(Composition)-> CompositionSpec:
        validate each layer using LayerReader 
        ...    
        return validated Composition 

Validation:

class LayerSpec(BaseModel):
    1. provide generic mechanism to validate variadic 3rd party _module_ classes
    2. validate layer type belongs to _module_
    3. validate layer arguments are legal to the type