---
title: raygeo.ops.transform.multipass
sidebar_label: raygeo.ops.transform.multipass
---

## MultiPassSpec

Parameters for the `MultiPass` transformer.

### `passes`

```python
passes: int
```

Total number of passes (must be >= 1).

### `z_step_down`

```python
z_step_down: float
```

Z distance to move down after each pass.
