eina_matrix.h(3)

NAME
eina_matrix.h

SYNOPSIS

  Data Structures
struct _Eina_Matrix3
A 3x3 floating point matrix.
struct _Eina_Matrix4
struct _Eina_Matrix3_F16p16
struct _Eina_Matrix2

  Macros
#define EINA_MATRIX3_FORMAT 'g %g %g | %g %g %g | %g %g %g'
Helper macro for printf formatting.
#define EINA_MATRIX3_ARGS(m)
Helper macro for printf formatting arg.

  Typedefs
typedef enum _Eina_Matrix_Type Eina_Matrix_Type
Matrix types.
typedef enum _Eina_Matrix_Axis Eina_Matrix_Axis
Matrix Axes.
typedef struct _Eina_Matrix3 Eina_Matrix3
A 3x3 floating point matrix.
typedef struct _Eina_Matrix4 Eina_Matrix4
A 4x4 floating point matrix.
typedef struct _Eina_Matrix3_F16p16 Eina_Matrix3_F16p16
A 3x3 fixed point (Q16.16) matrix.
typedef struct _Eina_Matrix2 Eina_Matrix2
A 2x2 floating point matrix.

  Enumerations
enum _Eina_Matrix_Type { EINA_MATRIX_TYPE_IDENTITY, EINA_MATRIX_TYPE_AFFINE, EINA_MATRIX_TYPE_PROJECTIVE, EINA_MATRIX_TYPE_LAST }
enum _Eina_Matrix_Axis { EINA_MATRIX_AXIS_X, EINA_MATRIX_AXIS_Y, EINA_MATRIX_AXIS_Z }

  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.
EINA_API Eina_Matrix_Type eina_matrix3_type_get (const Eina_Matrix3 *m)
Returns the type of the given floating point matrix.
EINA_API void eina_matrix3_values_set (Eina_Matrix3 *m, double xx, double xy, double xz, double yx, double yy, double yz, double zx, double zy, double zz)
Sets the values of the coefficients of the given floating point matrix.
EINA_API void eina_matrix3_values_get (const Eina_Matrix3 *m, double *xx, double *xy, double *xz, double *yx, double *yy, double *yz, double *zx, double *zy, double *zz)
Gets the values of the coefficients of the given floating point matrix.
EINA_API void eina_matrix3_fixed_values_get (const Eina_Matrix3 *m, Eina_F16p16 *xx, Eina_F16p16 *xy, Eina_F16p16 *xz, Eina_F16p16 *yx, Eina_F16p16 *yy, Eina_F16p16 *yz, Eina_F16p16 *zx, Eina_F16p16 *zy, Eina_F16p16 *zz)
Gets the values of the coefficients of the given fixed point matrix.
EINA_API void eina_matrix3_matrix3_f16p16_to (const Eina_Matrix3 *m, Eina_Matrix3_F16p16 *fm)
Transforms the given floating point matrix to the given fixed point matrix.
EINA_API Eina_Bool eina_matrix3_equal (const Eina_Matrix3 *m1, const Eina_Matrix3 *m2)
Checks whether the two matrices are equivalent.
EINA_API void eina_matrix3_compose (const Eina_Matrix3 *m1, const Eina_Matrix3 *m2, Eina_Matrix3 *dst)
Sets dst as the matrix multiplication (composition) of two matrices.
EINA_API void eina_matrix3_translate (Eina_Matrix3 *m, double tx, double ty)
Sets the matrix values for a translation operation.
EINA_API void eina_matrix3_scale (Eina_Matrix3 *m, double sx, double sy)
Sets the matrix values for a scaling operation.
EINA_API void eina_matrix3_rotate (Eina_Matrix3 *m, double rad)
Sets the matrix values for a rotation operation.
EINA_API void eina_matrix3_identity (Eina_Matrix3 *m)
Sets the given floating point matrix to the identity matrix.
EINA_API double eina_matrix3_determinant (const Eina_Matrix3 *m)
Calculates the determinant of the given matrix.
EINA_API void eina_matrix3_divide (Eina_Matrix3 *m, double scalar)
Divides the given matrix by a scalar number.
EINA_API void eina_matrix3_inverse (const Eina_Matrix3 *m, Eina_Matrix3 *m2)
Computes the inverse of the given matrix.
EINA_API void eina_matrix3_transpose (const Eina_Matrix3 *m, Eina_Matrix3 *a)
Computes the transpose of the given matrix.
EINA_API void eina_matrix3_cofactor (const Eina_Matrix3 *m, Eina_Matrix3 *a)
Computes the cofactor of the given matrix.
EINA_API void eina_matrix3_adjoint (const Eina_Matrix3 *m, Eina_Matrix3 *a)
Computes the adjoint of the given matrix.
EINA_API void eina_matrix3_point_transform (const Eina_Matrix3 *m, double x, double y, double *xr, double *yr)
Computes the transform of a 2D point using the given matrix.
EINA_API void eina_matrix3_rectangle_transform (const Eina_Matrix3 *m, const Eina_Rectangle *r, const Eina_Quad *q)
Computes the transformation of a rectangle using the given matrix.
EINA_API Eina_Bool eina_matrix3_quad_quad_map (Eina_Matrix3 *m, const Eina_Quad *src, const Eina_Quad *dst)
Creates a projective matrix that maps a quadrangle to a quadrangle.
EINA_API Eina_Bool eina_matrix3_square_quad_map (Eina_Matrix3 *m, const Eina_Quad *q)
Creates a matrix for unit-square to quad mapping.
EINA_API Eina_Bool eina_matrix3_quad_square_map (Eina_Matrix3 *m, const Eina_Quad *q)
Creates a matrix for mapping squares to match quad.
EINA_API void eina_matrix3_array_set (Eina_Matrix3 *m, const double *v)
Sets matrix values using an array.
EINA_API void eina_matrix3_copy (Eina_Matrix3 *dst, const Eina_Matrix3 *src)
Copies a matrix.
EINA_API void eina_matrix3_multiply (Eina_Matrix3 *out, const Eina_Matrix3 *mat_a, const Eina_Matrix3 *mat_b)
Multiplies two matrices.
EINA_API void eina_matrix3_multiply_copy (Eina_Matrix3 *out, const Eina_Matrix3 *mat_a, const Eina_Matrix3 *mat_b)
Multiplies two matrices without overwriting them.
EINA_API void eina_matrix3_scale_transform_set (Eina_Matrix3 *out, double s_x, double s_y)
Sets the scale parameters (XX, YY) of a matrix.
EINA_API void eina_matrix3_position_transform_set (Eina_Matrix3 *out, const double p_x, const double p_y)
Sets the positional parameters (XZ, YZ) of a matrix.
EINA_API void eina_normal3_matrix_get (Eina_Matrix3 *out, const Eina_Matrix4 *m)
Sets normal of the given matrix.
EINA_API void eina_matrix3_matrix4_to (Eina_Matrix4 *m4, const Eina_Matrix3 *m3)
Converts an Eina_Matrix3 into an Eina_Matrix4.
EINA_API Eina_Matrix_Type eina_matrix4_type_get (const Eina_Matrix4 *m)
Returns the type of the given floating point matrix.
EINA_API void eina_matrix4_values_set (Eina_Matrix4 *m, double xx, double xy, double xz, double xw, double yx, double yy, double yz, double yw, double zx, double zy, double zz, double zw, double wx, double wy, double wz, double ww)
Sets the values of the coefficients of the given floating point matrix.
EINA_API void eina_matrix4_values_get (const Eina_Matrix4 *m, double *xx, double *xy, double *xz, double *xw, double *yx, double *yy, double *yz, double *yw, double *zx, double *zy, double *zz, double *zw, double *wx, double *wy, double *wz, double *ww)
Gets the values of the coefficients of the given floating point matrix.
EINA_API double eina_matrix4_determinant (const Eina_Matrix4 *m)
Calculates the determinant of the given matrix.
EINA_API Eina_Bool eina_matrix4_normalized (Eina_Matrix4 *out, const Eina_Matrix4 *in)
Normalizes the given matrix.
EINA_API Eina_Bool eina_matrix4_inverse (Eina_Matrix4 *out, const Eina_Matrix4 *in)
Computes the inverse of the given matrix.
EINA_API void eina_matrix4_transpose (Eina_Matrix4 *out, const Eina_Matrix4 *in)
Computes the transpose of the given matrix.
EINA_API void eina_matrix4_matrix3_to (Eina_Matrix3 *m3, const Eina_Matrix4 *m4)
Converts an Eina_Matrix4 into an Eina_Matrix3.
EINA_API void eina_matrix4_identity (Eina_Matrix4 *out)
Sets the given matrix to identity.
EINA_API void eina_matrix4_multiply_copy (Eina_Matrix4 *out, const Eina_Matrix4 *mat_a, const Eina_Matrix4 *mat_b)
Multiplies two matrix.
EINA_API void eina_matrix4_array_set (Eina_Matrix4 *m, const double *v)
Sets matrix values using an array.
EINA_API void eina_matrix4_copy (Eina_Matrix4 *dst, const Eina_Matrix4 *src)
Copies matrix.
EINA_API void eina_matrix4_multiply (Eina_Matrix4 *out, const Eina_Matrix4 *mat_a, const Eina_Matrix4 *mat_b)
Multiplies two matrices with check.
EINA_API void eina_matrix4_ortho_set (Eina_Matrix4 *m, double left, double right, double bottom, double top, double dnear, double dfar)
Sets orthogonality matrix.
EINA_API void eina_matrix4_compose (const Eina_Matrix4 *mat_a, const Eina_Matrix4 *mat_b, Eina_Matrix4 *out)
Sets out as the matrix multiplication (composition) of two matrices.
EINA_API void eina_matrix4_translate (Eina_Matrix4 *t, double tx, double ty, double tz)
Sets the matrix values for a translation operation.
EINA_API void eina_matrix4_scale (Eina_Matrix4 *t, double sx, double sy, double sz)
Sets the matrix values for a scaling operation.
EINA_API void eina_matrix4_rotate (Eina_Matrix4 *t, double rad, Eina_Matrix_Axis axis)
Sets the matrix values for a rotation operation.
EINA_API void eina_matrix2_values_set (Eina_Matrix2 *m, double xx, double xy, double yx, double yy)
Sets the values of the coefficients of the given floating point matrix.
EINA_API void eina_matrix2_values_get (const Eina_Matrix2 *m, double *xx, double *xy, double *yx, double *yy)
Gets the values of the coefficients of the given floating point matrix.
EINA_API void eina_matrix2_inverse (Eina_Matrix2 *out, const Eina_Matrix2 *mat)
Computes the inverse with check of the given matrix.
EINA_API void eina_matrix2_identity (Eina_Matrix2 *m)
Sets the given floating point matrix to the identity matrix.
EINA_API void eina_matrix2_array_set (Eina_Matrix2 *m, const double *v)
Sets array to matrix.
EINA_API void eina_matrix2_copy (Eina_Matrix2 *dst, const Eina_Matrix2 *src)
Copies matrix.
EINA_API void eina_matrix2_multiply (Eina_Matrix2 *out, const Eina_Matrix2 *mat_a, const Eina_Matrix2 *mat_b)
Multiplies two matrices.
EINA_API void eina_matrix2_multiply_copy (Eina_Matrix2 *out, const Eina_Matrix2 *mat_a, const Eina_Matrix2 *mat_b)
Multiplies two matrices with check.
EINA_API Eina_Matrix_Type eina_matrix2_type_get (const Eina_Matrix2 *m)
Returns the type of the given floating point matrix.

Author

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