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mat4 swap rows/columns

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Recep Aslantas
2016-10-16 20:44:13 +03:00
parent 30004910f6
commit bb3067ebfb
1 changed files with 43 additions and 0 deletions
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43
include/cglm-mat.h
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@@ -443,5 +443,48 @@ glm_mat4_inv_precise(mat4 mat, mat4 dest) {
#endif #endif
} }
/*!
* @brief swap two matrix columns
*
* @param[in,out] mat matrix
* @param[in] col1 col1
* @param[in] col2 col2
*/
CGLM_INLINE
void
glm_mat4_swap_col(mat4 mat, int col1, int col2) {
vec4 tmp;
glm_vec4_dup(mat[col1], tmp);
glm_vec4_dup(mat[col2], mat[col1]);
glm_vec4_dup(tmp, mat[col2]);
}
/*!
* @brief swap two matrix rows
*
* @param[in,out] mat matrix
* @param[in] col1 col1
* @param[in] col2 col2
*/
CGLM_INLINE
void
glm_mat4_swap_row(mat4 mat, int row1, int row2) {
vec4 tmp;
tmp[0] = mat[0][row1];
tmp[1] = mat[1][row1];
tmp[2] = mat[2][row1];
tmp[3] = mat[3][row1];
mat[0][row1] = mat[0][row2];
mat[1][row1] = mat[1][row2];
mat[2][row1] = mat[2][row2];
mat[3][row1] = mat[3][row2];
mat[0][row2] = tmp[0];
mat[1][row2] = tmp[1];
mat[2][row2] = tmp[2];;
mat[3][row2] = tmp[3];
}
#else #else
#endif /* cglm_mat_h */ #endif /* cglm_mat_h */