# shz_mat4x4_transform_point3_transpose

Source: https://sh4zam.com/api/matrix/shz_mat4x4_transform_point3_transpose/

```c
SHZ_INLINE shz_vec3_t shz_mat4x4_transform_point3_transpose(const shz_mat4x4_t* mat, shz_vec3_t pt) SHZ_NOEXCEPT;
```

Transforms a 3D point by the transpose of a 4x4 matrix.

## Parameters

| Name | Type | Description |
| --- | --- | --- |
| `mat` | `const shz_mat4x4_t *` |  |
| `pt` | `shz_vec3_t` |  |

## Returns

`shz_vec3_t`

## Details

This is a routine specializing in one-off transforms of a *single* 3D point by the transpose of a a *single* 4x4 matrix. It should be faster than going through XMTRX.

## Notes

- For batch transforming multiple 3D points against the same 4x4 matrix, preload the matrix into XMTRX, use `shz_xmtrx_transpose()`, then use `shz_xmtrx_transform_point2()`.

## Naming and requirements

- `_transpose`: Operates with the transposed matrix (row-major input, or inverse-rotation use). ([Naming and Suffixes](https://sh4zam.com/concepts/naming-and-suffixes/))
- `shz_mat4x4_t` and `shz_mat2x2_t` arguments must be 8-byte aligned. Unaligned data goes through the `float[16]` parameters of the `_unaligned` routines.

## Availability

- **C++ equivalent:** none (call the C function from C++)
- **Type-generic form:** none
- **Back-ends:** SH4: shared C implementation · SW: portable C · SPU: shared C implementation
- **Defined in:** [`sh4zam/shz_matrix.h:796`](https://github.com/gyrovorbis/sh4zam/blob/ba1e30c88d49df0311870b229e1dd860ef26c477/include/sh4zam/shz_matrix.h#L796)
- **Module:** [Matrix](https://sh4zam.com/api/matrix/), section "Transforming"

## See also

[`shz_xmtrx_transpose`](https://sh4zam.com/api/xmtrx/shz_xmtrx_transpose/), [`shz_xmtrx_transform_point3`](https://sh4zam.com/api/xmtrx/shz_xmtrx_transform_point3/)