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mat4 pick transposed mat3

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Recep Aslantas
2016-10-11 18:27:13 +03:00
parent 80c6c0a28b
commit 14ee37b9c5
1 changed files with 24 additions and 0 deletions
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24
include/cglm-mat.h
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@@ -85,6 +85,30 @@ glm_mat4_pick3(mat4 mat, mat3 dest) {
dest[2][2] = mat[2][2];
}
/*!
* @brief copy upper-left of mat4 to mat3 (transposed)
*
* the postfix t stands for transpose
*
* @param[in] mat source
* @param[out] dest destination
*/
CGLM_INLINE
void
glm_mat4_pick3t(mat4 mat, mat3 dest) {
dest[0][0] = mat[0][0];
dest[0][1] = mat[1][0];
dest[0][2] = mat[2][0];
dest[1][0] = mat[0][1];
dest[1][1] = mat[1][1];
dest[1][2] = mat[2][1];
dest[2][0] = mat[0][2];
dest[2][1] = mat[1][2];
dest[2][2] = mat[2][2];
}
/*!
* @brief copy mat3 to mat4's upper-left
*