YourWishes/cglm
1
0
Fork 0
mirror of https://github.com/recp/cglm.git synced 2026-02-17 03:39:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

add _mul for non-square matrices

Browse Source
This commit is contained in:
Recep Aslantas
2023-07-22 12:00:23 +03:00
parent 1e077fd125
commit 6e9e91be05
18 changed files with 286 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
include/cglm/mat2x4.h
View File

@@ -70,4 +70,36 @@ glm_mat2x4_make(float * __restrict src, mat2x4 dest) {
dest[1][3] = src[7];
}
/*!
* @brief multiply m1 and m2 to dest
*
* m1, m2 and dest matrices can be same matrix, it is possible to write this:
*
* @code
* glm_mat2x4_mul(m, m, m);
* @endcode
*
* @param[in] m1 left matrix
* @param[in] m2 right matrix
* @param[out] dest destination matrix
*/
CGLM_INLINE
void
glm_mat2x4_mul(mat2x4 m1, mat4x2 m2, mat2 dest) {
float a00 = m1[0][0], a01 = m1[0][1],
a10 = m1[1][0], a11 = m1[1][1],
a20 = m1[2][0], a21 = m1[2][1],
a30 = m1[3][0], a31 = m1[3][1],
b00 = m2[0][0], b01 = m2[0][1],
b10 = m2[1][0], b11 = m2[1][1],
b20 = m2[2][0], b21 = m2[2][1],
b30 = m2[3][0], b31 = m2[3][1];
dest[0][0] = a00 * b00 + a10 * b01 + a20 * b20 + a30 * b30;
dest[0][1] = a00 * b10 + a10 * b11 + a20 * b21 + a30 * b31;
dest[1][0] = a01 * b00 + a11 * b01 + a21 * b20 + a31 * b30;
dest[1][1] = a01 * b10 + a11 * b11 + a21 * b21 + a31 * b31;
}
#endif