Architecture
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Concepts
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Entity:
has name, default None
has a pose (position + orientation)
have parts, dictionary of key, entity, parts default to {}
None is a special key which allow to bypass parts
.parts[] return parts in the local frame
[] returns parts or the parts of .parts[None] in the global frame
has draw method which returns all parts of parts that are primitives
parts can have a style that can be a name or a dictionary of drawings
attributes
Primitive:
has draw methods which return the transformed self
can be drawn by an engine
Engine:
can draw primitive on a canvas
Style:
dictionary of drawing attributes and styles