shz_mat4x4_transform_point2_transpose

Markdown

SHZ_INLINE shz_vec2_t shz_mat4x4_transform_point2_transpose(const shz_mat4x4_t* mat, shz_vec2_t pt) SHZ_NOEXCEPT;

Transforms a 2D point by the transpose of a 4x4 matrix.

Parameters

Name	Type	Description
`mat`	`const shz_mat4x4_t *`
`pt`	`shz_vec2_t`

Returns

shz_vec2_t

Details

This is a routine specializing in one-off transforms of a single 2D point by the transpose of a a single 4x4 matrix. It should be faster than going through XMTRX.

Notes

For batch transforming multiple 2D 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)
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:781
Module: Matrix, section "Transforming"