20 lines
446 B
Python
20 lines
446 B
Python
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from pydantic import BaseModel
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from ..models.axis_direction_pair import AxisDirectionPair
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class System(BaseModel):
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"""Co-ordinate system definition.
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The `up` axis must be orthogonal to the `forward` axis.
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See [cglearn.eu] for background reading.
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[cglearn.eu](https://cglearn.eu/pub/computer-graphics/introduction-to-geometry#material-coordinate-systems-1)
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"""
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forward: AxisDirectionPair
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up: AxisDirectionPair
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