# `mighty_miter.core`

The portable layer: geometry and export, in millimeters and radians, with no CAD kernel
attached. It must never import `adsk` (ADR-002).

```{eval-rst}
.. automodule:: mighty_miter.core
   :no-index:
```

## `core.linalg`

```{eval-rst}
.. automodule:: mighty_miter.core.linalg
   :members:
```

## `core.types`

```{eval-rst}
.. automodule:: mighty_miter.core.types
   :members:
```

## `core.protocols`

```{eval-rst}
.. automodule:: mighty_miter.core.protocols
   :members:
```

## `core.errors`

```{eval-rst}
.. automodule:: mighty_miter.core.errors
   :members:
```

## `core.datum`

The datum frame: circumferential and axial zero. Derived from an explicit geometric
direction and **never** from a reported parametric window (ADR-015, PRD 7.14).

```{eval-rst}
.. automodule:: mighty_miter.core.datum
   :members:
```

## `core.unroll`

The unrolling tiers (PRD 6.0). Each maps a curve on a host face into template
coordinates; which tier applies is decided by numerical classification, not by what the
user says the shape is.

```{eval-rst}
.. automodule:: mighty_miter.core.unroll
   :members:
```

### `core.unroll.cylinder`

Tier A — the exact cylinder unroller (PRD 6.2).

```{eval-rst}
.. automodule:: mighty_miter.core.unroll.cylinder
   :members:
```

## `core.export`

Self-authored output files. The add-in never calls a Fusion export API, because those are
licence-gated and that gate has already moved once (PRD 8.1, ADR-013).

```{eval-rst}
.. automodule:: mighty_miter.core.export
   :members:
```

### `core.export.pdf`

A minimal, dependency-free PDF 1.4 writer (PRD 8.2), differentially tested against
`pypdf` (PRD 13.3 T14).

```{eval-rst}
.. automodule:: mighty_miter.core.export.pdf
   :members:
```

## `core.template`

Assembles an unrolled miter curve onto a printable 1:1 sheet, with the calibration
geometry that makes the print verifiable before metal is cut (FR-6, PRD 8.4).

```{eval-rst}
.. automodule:: mighty_miter.core.template
   :members:
```