go-matrix3x3: GOffice Reference Manual

go-matrix3x3

go-matrix3x3

Functions

void	go_matrix3x3_from_euler ()
void	go_matrix3x3_from_euler_transposed ()
void	go_matrix3x3_multiply ()
void	go_matrix3x3_to_euler ()
void	go_matrix3x3_transform ()

Description

Functions

go_matrix3x3_from_euler ()

void
go_matrix3x3_from_euler (GOMatrix3x3 *mat,
                         double Psi,
                         double Theta,
                         double Phi);

Initializes mat from Euler angles (ZXZ convention).

Parameters

mat	GOMatrix3x3.	[out]
Psi	first Euler angle
Theta	second Euler angle
Phi	third Euler angle

go_matrix3x3_from_euler_transposed ()

void
go_matrix3x3_from_euler_transposed (GOMatrix3x3 *mat,
                                    double Psi,
                                    double Theta,
                                    double Phi);

Initializes mat from Euler angles (ZXZ convention) and transposes it.

Parameters

mat	GOMatrix3x3.	[out]
Psi	first Euler angle
Theta	second Euler angle
Phi	third Euler angle

go_matrix3x3_multiply ()

void
go_matrix3x3_multiply (GOMatrix3x3 *dest,
                       GOMatrix3x3 const *src1,
                       GOMatrix3x3 const *src2);

Multiplies src1 by src2 and stores the result in dest . dest can be either src1 or src2 .

Parameters

dest	GOMatrix3x3.	[out]
src1	GOMatrix3x3
src2	GOMatrix3x3

go_matrix3x3_to_euler ()

void
go_matrix3x3_to_euler (GOMatrix3x3 const *mat,
                       double *Psi,
                       double *Theta,
                       double *Phi);

Extracts Euler angles (ZXZ convention) from mat .

Parameters

mat	GOMatrix3x3
Psi	first Euler angle.	[out]
Theta	second Euler angle.	[out]
Phi	third Euler angle.	[out]

go_matrix3x3_transform ()

void
go_matrix3x3_transform (GOMatrix3x3 *mat,
                        double xo,
                        double yo,
                        double zo,
                        double *x,
                        double *y,
                        double *z);

Transforms a 3D point (xo , yo , zo ) using the matrix mat .

Parameters

mat	GOMatrix3x3
xo	x coordinate
yo	y coordinate
zo	z coordinate
x	transformed x coordinate.	[out]
y	transformed y coordinate.	[out]
z	transformed z coordinate.	[out]