Eina_Matrix3_F16p16_Group(3)

NAME
Eina_Matrix3_F16p16_Group - 3x3 Matrices in fixed point

 - Definition and operations for 3x3 fixed point matrices.

SYNOPSIS

  Data Structures
struct _Eina_Matrix3_F16p16
struct Eina_Matrix3_F16p16
A 3x3 fixed point (Q16.16) matrix.

  Typedefs
typedef struct _Eina_Matrix3_F16p16 Eina_Matrix3_F16p16
A 3x3 fixed point (Q16.16) matrix.

  Functions
EINA_API void eina_matrix3_f16p16_identity (Eina_Matrix3_F16p16 *m)
Sets the given fixed point matrix to the identity matrix.
EINA_API void eina_matrix3_f16p16_compose (const Eina_Matrix3_F16p16 *m1, const Eina_Matrix3_F16p16 *m2, Eina_Matrix3_F16p16 *dst)
Sets dst as the matrix multiplication (composition) of two Eina_F16p16 matrices.
EINA_API Eina_Matrix_Type eina_matrix3_f16p16_type_get (const Eina_Matrix3_F16p16 *m)
Returns the type of the given fixed point matrix.

Detailed Description

Definition and operations for 3x3 fixed point matrices.

Function Documentation

  EINA_API void eina_matrix3_f16p16_identity (Eina_Matrix3_F16p16 * m)

Sets the given fixed point matrix to the identity matrix.

Parameters
    m The fixed point matrix to set.

This function sets m to the identity matrix. No check is done on m.

Since
    1.14

  EINA_API void eina_matrix3_f16p16_compose (const Eina_Matrix3_F16p16 * m1, const Eina_Matrix3_F16p16 * m2, Eina_Matrix3_F16p16 * dst)

Sets dst as the matrix multiplication (composition) of two Eina_F16p16 matrices.

Parameters
    m1 The first matrix. Must be non-NULL.
    m2 The second matrix. Must be non-NULL.
    dst The results matrix.

In matrix multiplication, AB, the resultant matrix is created from the rows of A multiplied against the columns of B and summed. This is not a commutative; i.e. AB != BA, so the ordering of arguments m1 and m2 matters.

Since
    1.14

References eina_f16p16_mul().

  EINA_API Eina_Matrix_Type eina_matrix3_f16p16_type_get (const Eina_Matrix3_F16p16 * m)

Returns the type of the given fixed point matrix.

Parameters
    m The fixed point matrix.

Returns
    The type of the matrix.

This function returns the type of the matrix m. No check is done on m.

Since
    1.14

References EINA_MATRIX_TYPE_AFFINE, EINA_MATRIX_TYPE_IDENTITY, and EINA_MATRIX_TYPE_PROJECTIVE.

Author

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