Routines to convert between OpenGL and Allegro math types. More...

Functions
	for ()
	Converts an OpenGL floating-point matrix issued from the matrix stack to an Allegro fixed-point matrix. More...

Matrix conversion routines
void	allegro_gl_MATRIX_to_GLfloat (MATRIX *m, GLfloat gl[16])
	Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations. More...

void	allegro_gl_MATRIX_to_GLdouble (MATRIX *m, GLdouble gl[16])
	Converts an Allegro fixed-point matrix to an array of doubles suitable for OpenGL's matrix operations. More...

void	allegro_gl_MATRIX_f_to_GLfloat (MATRIX_f *m, GLfloat gl[16])
	Converts an Allegro floating-point matrix to an array of floats suitable for OpenGL's matrix operations. More...

void	allegro_gl_MATRIX_f_to_GLdouble (MATRIX_f *m, GLdouble gl[16])
	Converts an Allegro floating-point matrix to an array of doubles suitable for OpenGL's matrix operations. More...

void	allegro_gl_GLfloat_to_MATRIX (GLfloat gl[16], MATRIX *m)
	Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations. More...

void	allegro_gl_GLdouble_to_MATRIX (GLdouble gl[16], MATRIX *m)
	Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations. More...

void	allegro_gl_GLfloat_to_MATRIX_f (GLfloat gl[16], MATRIX_f *m)
	Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations. More...

void	allegro_gl_GLdouble_to_MATRIX_f (GLdouble gl[16], MATRIX_f *m)
	Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations. More...

Quaternion conversion routines
void	allegro_gl_apply_quat (QUAT *q)
	Converts a quaternion to a vector/angle, which can be used with glRotate*(). More...

void	allegro_gl_quat_to_glrotatef (QUAT q, float angle, float x, float y, float *z)
	Converts a quaternion to a vector/angle, which can be used with glRotate*(). More...

void	allegro_gl_quat_to_glrotated (QUAT q, double angle, double x, double y, double *z)
	Converts a quaternion to a vector/angle, which can be used with glRotate*(). More...

Detailed Description

Routines to convert between OpenGL and Allegro math types.

Function Documentation

void allegro_gl_MATRIX_to_GLfloat	(	MATRIX *	m,
		GLfloat	gl[16]
	)

Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations.

Example:

   MATRIX m = identity_matrix;
   GLfloat gl_m[16];
   get_vector_rotation_matrix(&m, itofix(1), 0, itofix(1), ftofix(43.83));
   allegro_gl_MATRIX_to_GLfloat(&m, &gl_m);
   glLoadMatrixf(&gl_m);

See also: allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

Definition at line 66 of file math.c.

void allegro_gl_MATRIX_to_GLdouble	(	MATRIX *	m,
		GLdouble	gl[16]
	)

Converts an Allegro fixed-point matrix to an array of doubles suitable for OpenGL's matrix operations.

See also: allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

Definition at line 82 of file math.c.

void allegro_gl_MATRIX_f_to_GLfloat	(	MATRIX_f *	m,
		GLfloat	gl[16]
	)

Converts an Allegro floating-point matrix to an array of floats suitable for OpenGL's matrix operations.

See also: allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

Definition at line 98 of file math.c.

void allegro_gl_MATRIX_f_to_GLdouble	(	MATRIX_f *	m,
		GLdouble	gl[16]
	)

Converts an Allegro floating-point matrix to an array of doubles suitable for OpenGL's matrix operations.

See also: allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

Definition at line 110 of file math.c.

void allegro_gl_GLfloat_to_MATRIX	(	GLfloat	gl[16],
		MATRIX *	m
	)

Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations.

Example:

   MATRIX m = identity_matrix;
   GLfloat gl_m[16];
   get_vector_rotation_matrix(&m, itofix(1), 0, itofix(1), ftofix(43.83));
   allegro_gl_MATRIX_to_GLfloat(&m, &gl_m);
   glLoadMatrixf(&gl_m);

See also: allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

void allegro_gl_GLdouble_to_MATRIX	(	GLdouble	gl[16],
		MATRIX *	m
	)

Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations.

Example:

   MATRIX m = identity_matrix;
   GLfloat gl_m[16];
   get_vector_rotation_matrix(&m, itofix(1), 0, itofix(1), ftofix(43.83));
   allegro_gl_MATRIX_to_GLfloat(&m, &gl_m);
   glLoadMatrixf(&gl_m);

See also: allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

void allegro_gl_GLfloat_to_MATRIX_f	(	GLfloat	gl[16],
		MATRIX_f *	m
	)

Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations.

Example:

   MATRIX m = identity_matrix;
   GLfloat gl_m[16];
   get_vector_rotation_matrix(&m, itofix(1), 0, itofix(1), ftofix(43.83));
   allegro_gl_MATRIX_to_GLfloat(&m, &gl_m);
   glLoadMatrixf(&gl_m);

See also: allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

void allegro_gl_GLdouble_to_MATRIX_f	(	GLdouble	gl[16],
		MATRIX_f *	m
	)

Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations.

Example:

   MATRIX m = identity_matrix;
   GLfloat gl_m[16];
   get_vector_rotation_matrix(&m, itofix(1), 0, itofix(1), ftofix(43.83));
   allegro_gl_MATRIX_to_GLfloat(&m, &gl_m);
   glLoadMatrixf(&gl_m);

See also: allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX()

void allegro_gl_apply_quat ( QUAT * q )

Converts a quaternion to a vector/angle, which can be used with glRotate*().

Values are returned in the parameters.

Example:

   QUAT q = identity_quat;
   float x, y, z, angle;
   allegro_gl_quat_to_glrotatef(&q, &angle, &x, &y, &z);
   glRotatef(angle, x, y, z);

See also: allegro_gl_quat_to_glrotated(), allegro_gl_apply_quat()

Parameters

q	The Quaternion to convert.
angle	The angle of rotation, in degrees.
x	The rotation vector's x-axis component.
y	The rotation vector's y-axis component.
z	The rotation vector's z-axis component.

void allegro_gl_quat_to_glrotatef	(	QUAT *	q,
		float *	angle,
		float *	x,
		float *	y,
		float *	z
	)

Converts a quaternion to a vector/angle, which can be used with glRotate*().

Values are returned in the parameters.

Example:

   QUAT q = identity_quat;
   float x, y, z, angle;
   allegro_gl_quat_to_glrotatef(&q, &angle, &x, &y, &z);
   glRotatef(angle, x, y, z);

See also: allegro_gl_quat_to_glrotated(), allegro_gl_apply_quat()

Parameters

q	The Quaternion to convert.
angle	The angle of rotation, in degrees.
x	The rotation vector's x-axis component.
y	The rotation vector's y-axis component.
z	The rotation vector's z-axis component.

Definition at line 250 of file math.c.

Referenced by for().

void allegro_gl_quat_to_glrotated	(	QUAT *	q,
		double *	angle,
		double *	x,
		double *	y,
		double *	z
	)

Converts a quaternion to a vector/angle, which can be used with glRotate*().

Values are returned in the parameters. See allegro_gl_quat_to_rotatef() for an example.

See also: allegro_gl_quat_to_glrotatef(), allegro_gl_apply_quat()

Parameters

q	The Quaternion to convert.
angle	The angle of rotation, in degrees.
x	The rotation vector's x-axis component.
y	The rotation vector's y-axis component.
z	The rotation vector's z-axis component.

Definition at line 282 of file math.c.

Referenced by for().

for ( )

Converts an OpenGL floating-point matrix issued from the matrix stack to an Allegro fixed-point matrix.

See also: allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f() Converts an OpenGL double precision floating-point matrix issued from the matrix stack to an Allegro fixed-point matrix.; allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX() Converts an OpenGL floating-point matrix issued from the matrix stack to an Allegro floating-point matrix.; allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLdouble_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX() Converts an OpenGL double precision floating-point matrix issued from the matrix stack to an Allegro single-precision floating-point matrix.; allegro_gl_MATRIX_to_GLfloat(); allegro_gl_MATRIX_to_GLdouble(); allegro_gl_MATRIX_f_to_GLfloat(); allegro_gl_MATRIX_f_to_GLdouble(); allegro_gl_GLdouble_to_MATRIX(); allegro_gl_GLfloat_to_MATRIX_f(); allegro_gl_GLfloat_to_MATRIX() Multiplies the Quaternion to the current transformation matrix, by converting it to a call to glRotatef()

Example:

   QUAT q = identity_quat;
   get_vector_rotation_quat(&q, itofix(1), 0, itofix(1), ftofix(43.83));
   glLoadIdentity();
   allegro_gl_apply_quat(&q);

See also: allegro_gl_quat_to_glrotatef(), allegro_gl_quat_to_glrotated()

Parameters

q	The Quaternion to apply.

Definition at line 114 of file math.c.

References allegro_gl_quat_to_glrotated(), and allegro_gl_quat_to_glrotatef().

Functions

Matrix conversion routines

Quaternion conversion routines

Detailed Description

Function Documentation