190 lines
4.6 KiB
ReStructuredText
190 lines
4.6 KiB
ReStructuredText
.. default-domain:: C
|
|
|
|
mat3
|
|
====
|
|
|
|
Header: cglm/mat3.h
|
|
|
|
Table of contents (click to go):
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Macros:
|
|
|
|
1. GLM_MAT3_IDENTITY_INIT
|
|
#. GLM_MAT3_ZERO_INIT
|
|
#. GLM_MAT3_IDENTITY
|
|
#. GLM_MAT3_ZERO
|
|
#. glm_mat3_dup(mat, dest)
|
|
|
|
Functions:
|
|
|
|
1. :c:func:`glm_mat3_copy`
|
|
#. :c:func:`glm_mat3_identity`
|
|
#. :c:func:`glm_mat3_identity_array`
|
|
#. :c:func:`glm_mat3_zero`
|
|
#. :c:func:`glm_mat3_mul`
|
|
#. :c:func:`glm_mat3_transpose_to`
|
|
#. :c:func:`glm_mat3_transpose`
|
|
#. :c:func:`glm_mat3_mulv`
|
|
#. :c:func:`glm_mat3_quat`
|
|
#. :c:func:`glm_mat3_scale`
|
|
#. :c:func:`glm_mat3_det`
|
|
#. :c:func:`glm_mat3_inv`
|
|
#. :c:func:`glm_mat3_trace`
|
|
#. :c:func:`glm_mat3_swap_col`
|
|
#. :c:func:`glm_mat3_swap_row`
|
|
#. :c:func:`glm_mat3_rmc`
|
|
|
|
Functions documentation
|
|
~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
.. c:function:: void glm_mat3_copy(mat3 mat, mat3 dest)
|
|
|
|
copy mat3 to another one (dest).
|
|
|
|
Parameters:
|
|
| *[in]* **mat** source
|
|
| *[out]* **dest** destination
|
|
|
|
.. c:function:: void glm_mat3_identity(mat3 mat)
|
|
|
|
copy identity mat3 to mat, or makes mat to identiy
|
|
|
|
Parameters:
|
|
| *[out]* **mat** matrix
|
|
|
|
.. c:function:: void glm_mat3_identity_array(mat3 * __restrict mat, size_t count)
|
|
|
|
make given matrix array's each element identity matrix
|
|
|
|
Parameters:
|
|
| *[in,out]* **mat** matrix array (must be aligned (16/32) if alignment is not disabled)
|
|
| *[in]* **count** count of matrices
|
|
|
|
.. c:function:: void glm_mat3_zero(mat3 mat)
|
|
|
|
make given matrix zero
|
|
|
|
Parameters:
|
|
| *[in,out]* **mat** matrix to
|
|
|
|
.. c:function:: void glm_mat3_mul(mat3 m1, mat3 m2, mat3 dest)
|
|
|
|
multiply m1 and m2 to dest
|
|
m1, m2 and dest matrices can be same matrix, it is possible to write this:
|
|
|
|
.. code-block:: c
|
|
|
|
mat3 m = GLM_MAT3_IDENTITY_INIT;
|
|
glm_mat3_mul(m, m, m);
|
|
|
|
Parameters:
|
|
| *[in]* **m1** left matrix
|
|
| *[in]* **m2** right matrix
|
|
| *[out]* **dest** destination matrix
|
|
|
|
.. c:function:: void glm_mat3_transpose_to(mat3 m, mat3 dest)
|
|
|
|
transpose mat4 and store in dest
|
|
source matrix will not be transposed unless dest is m
|
|
|
|
Parameters:
|
|
| *[in]* **mat** source
|
|
| *[out]* **dest** destination
|
|
|
|
.. c:function:: void glm_mat3_transpose(mat3 m)
|
|
|
|
tranpose mat3 and store result in same matrix
|
|
|
|
Parameters:
|
|
| *[in]* **mat** source
|
|
| *[out]* **dest** destination
|
|
|
|
.. c:function:: void glm_mat3_mulv(mat3 m, vec3 v, vec3 dest)
|
|
|
|
multiply mat4 with vec4 (column vector) and store in dest vector
|
|
|
|
Parameters:
|
|
| *[in]* **mat** mat3 (left)
|
|
| *[in]* **v** vec3 (right, column vector)
|
|
| *[out]* **dest** destination (result, column vector)
|
|
|
|
.. c:function:: void glm_mat3_quat(mat3 m, versor dest)
|
|
|
|
convert mat3 to quaternion
|
|
|
|
Parameters:
|
|
| *[in]* **m** rotation matrix
|
|
| *[out]* **dest** destination quaternion
|
|
|
|
.. c:function:: void glm_mat3_scale(mat3 m, float s)
|
|
|
|
multiply matrix with scalar
|
|
|
|
Parameters:
|
|
| *[in, out]* **mat** matrix
|
|
| *[in]* **dest** scalar
|
|
|
|
.. c:function:: float glm_mat3_det(mat3 mat)
|
|
|
|
returns mat3 determinant
|
|
|
|
Parameters:
|
|
| *[in]* **mat** matrix
|
|
|
|
Returns:
|
|
mat3 determinant
|
|
|
|
.. c:function:: void glm_mat3_inv(mat3 mat, mat3 dest)
|
|
|
|
inverse mat3 and store in dest
|
|
|
|
Parameters:
|
|
| *[in]* **mat** matrix
|
|
| *[out]* **dest** destination (inverse matrix)
|
|
|
|
.. c:function:: void glm_mat3_trace(mat3 m)
|
|
|
|
| sum of the elements on the main diagonal from upper left to the lower right
|
|
|
|
Parameters:
|
|
| *[in]* **m** matrix
|
|
|
|
Returns:
|
|
trace of matrix
|
|
|
|
.. c:function:: void glm_mat3_swap_col(mat3 mat, int col1, int col2)
|
|
|
|
swap two matrix columns
|
|
|
|
Parameters:
|
|
| *[in, out]* **mat** matrix
|
|
| *[in]* **col1** col1
|
|
| *[in]* **col2** col2
|
|
|
|
.. c:function:: void glm_mat3_swap_row(mat3 mat, int row1, int row2)
|
|
|
|
swap two matrix rows
|
|
|
|
Parameters:
|
|
| *[in, out]* **mat** matrix
|
|
| *[in]* **row1** row1
|
|
| *[in]* **row2** row2
|
|
|
|
.. c:function:: float glm_mat3_rmc(vec3 r, mat3 m, vec3 c)
|
|
|
|
| **rmc** stands for **Row** * **Matrix** * **Column**
|
|
|
|
| helper for R (row vector) * M (matrix) * C (column vector)
|
|
|
|
| the result is scalar because R * M = Matrix1x3 (row vector),
|
|
| then Matrix1x3 * Vec3 (column vector) = Matrix1x1 (Scalar)
|
|
|
|
Parameters:
|
|
| *[in]* **r** row vector or matrix1x3
|
|
| *[in]* **m** matrix3x3
|
|
| *[in]* **c** column vector or matrix3x1
|
|
|
|
Returns:
|
|
scalar value e.g. Matrix1x1
|