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add _mul for non-square matrices

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Recep Aslantas
2023-07-22 12:00:23 +03:00
parent 1e077fd125
commit 6e9e91be05
18 changed files with 286 additions and 0 deletions
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36
include/cglm/mat3x2.h
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@@ -74,4 +74,40 @@ glm_mat3x2_make(float * __restrict src, mat3x2 dest) {
dest[2][1] = src[5];
}
/*!
* @brief multiply m1 and m2 to dest
*
* m1, m2 and dest matrices can be same matrix, it is possible to write this:
*
* @code
* glm_mat3x2_mul(m, m, m);
* @endcode
*
* @param[in] m1 left matrix
* @param[in] m2 right matrix
* @param[out] dest destination matrix
*/
CGLM_INLINE
void
glm_mat3x2_mul(mat3x2 m1, mat2x3 m2, mat3 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],
b00 = m2[0][0], b01 = m2[0][1], b02 = m2[0][2],
b10 = m2[1][0], b11 = m2[1][1], b12 = m2[1][2];
dest[0][0] = a00 * b00 + a10 * b10;
dest[0][1] = a00 * b01 + a10 * b11;
dest[0][2] = a00 * b02 + a10 * b12;
dest[1][0] = a01 * b00 + a11 * b10;
dest[1][1] = a01 * b01 + a11 * b11;
dest[1][2] = a01 * b02 + a11 * b12;
dest[2][0] = a20 * b00 + a21 * b10;
dest[2][1] = a20 * b01 + a21 * b11;
dest[2][2] = a20 * b02 + a21 * b12;
}
#endif