/usr/include/volume_io/geom_structs.h is in libminc-dev 2.2.00-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define DEF_GEOM_STRUCTS
/* ----------------------------------------------------------------------------
@COPYRIGHT :
Copyright 1993,1994,1995 David MacDonald,
McConnell Brain Imaging Centre,
Montreal Neurological Institute, McGill University.
Permission to use, copy, modify, and distribute this
software and its documentation for any purpose and without
fee is hereby granted, provided that the above copyright
notice appear in all copies. The author and McGill University
make no representations about the suitability of this
software for any purpose. It is provided "as is" without
express or implied warranty.
@VERSION : $Header: /private-cvsroot/minc/volume_io/Include/volume_io/geom_structs.h,v 1.24 2007-12-03 14:19:35 rotor Exp $
---------------------------------------------------------------------------- */
/* ----------------------------- MNI Header -----------------------------------
@NAME : geom_structs.h
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: Types and macros for accessing points, vectors, colours, etc.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
/* Define the structure of a point in world coordinates */
#define VIO_N_DIMENSIONS 3
#define VIO_X 0
#define VIO_Y 1
#define VIO_Z 2
#if !VIO_PREFIX_NAMES /* Don't define commonly used symbols */
#define N_DIMENSIONS VIO_N_DIMENSIONS
#define X VIO_X
#define Y VIO_Y
#define Z VIO_Z
#endif /* !VIO_PREFIX_NAMES */
/* ----------------------------- MNI Header -----------------------------------
@NAME : Point type
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: A 3D point type and macros for manipulation.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
typedef float VIO_Point_coord_type;
typedef struct
{
VIO_Point_coord_type coords[VIO_N_DIMENSIONS];
} VIO_Point;
/* --- access the given coordinate of the point */
#define Point_coord( point, coord ) ((point).coords[coord])
/* --- access x, y, or z coordinate of the point */
#define Point_x( point ) Point_coord( point, VIO_X )
#define Point_y( point ) Point_coord( point, VIO_Y )
#define Point_z( point ) Point_coord( point, VIO_Z )
/* --- assign all 3 coordinates of the point */
#define fill_Point( point, x, y, z ) \
{ \
Point_x(point) = (VIO_Point_coord_type) (x); \
Point_y(point) = (VIO_Point_coord_type) (y); \
Point_z(point) = (VIO_Point_coord_type) (z); \
}
/* ----------------------------- MNI Header -----------------------------------
@NAME : Vector type
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: A 3D vector type and macros for manipulation.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
typedef struct
{
VIO_Point_coord_type coords[VIO_N_DIMENSIONS];
} VIO_Vector;
/* --- access the given coordinate of the vector */
#define Vector_coord( vector, coord ) ((vector).coords[coord])
/* --- access x, y, or z coordinate of the vector */
#define Vector_x( vector ) Vector_coord( vector, VIO_X )
#define Vector_y( vector ) Vector_coord( vector, VIO_Y )
#define Vector_z( vector ) Vector_coord( vector, VIO_Z )
/* --- assign all 3 coordinates of the vector */
#define fill_Vector( vector, x, y, z ) \
{ \
Vector_x(vector) = (VIO_Point_coord_type) (x); \
Vector_y(vector) = (VIO_Point_coord_type) (y); \
Vector_z(vector) = (VIO_Point_coord_type) (z); \
}
/* ----------------------------- MNI Header -----------------------------------
@NAME : Colour type
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: A 4 by 8-bit component colour type and macros for manipulation.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
/* bert - redefined 'Colour' to be an 'int' instead of a 'long'. Jason
* Lerch found that MNI-Display was displaying garbled images when built
* for 64 bits on the SGI.
*
* Apparently the graphics functions in volume_io rely on Colour being
* exactly 4 bytes, so you get weird results on 64-bit architectures
* if Colour is a 'long'.
*/
typedef unsigned int VIO_Colour;
#define MULT_COLOURS( prod, c1, c2 ) \
{ \
VIO_Real r, g, b, r1, g1, b1, r2, g2, b2; \
r1 = get_Colour_r_0_1(c1); \
g1 = get_Colour_g_0_1(c1); \
b1 = get_Colour_b_0_1(c1); \
r2 = get_Colour_r_0_1(c2); \
g2 = get_Colour_g_0_1(c2); \
b2 = get_Colour_b_0_1(c2); \
r = r1 * r2; \
g = g1 * g2; \
b = b1 * b2; \
(prod) = make_rgba_Colour_0_1( r, g, b, get_Colour_a_0_1(c1) ); \
}
/* --- component-wise sum of two colours, returned in sum */
#define ADD_COLOURS( sum, c1, c2 ) \
{ \
int _r, _g, _b, _r1, _g1, _b1, _r2, _g2, _b2; \
_r1 = get_Colour_r(c1); \
_g1 = get_Colour_g(c1); \
_b1 = get_Colour_b(c1); \
_r2 = get_Colour_r(c2); \
_g2 = get_Colour_g(c2); \
_b2 = get_Colour_b(c2); \
_r = _r1 + _r2; \
_g = _g1 + _g2; \
_b = _b1 + _b2; \
if( _r > 255 ) _r = 255; \
if( _g > 255 ) _g = 255; \
if( _b > 255 ) _b = 255; \
(sum) = make_rgba_Colour( _r, _g, _b, get_Colour_a(c1) ); \
}
/* ----------------------------- MNI Header -----------------------------------
@NAME : Surfprop type
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: A Surface property type and macros for manipulation.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
typedef float VIO_Spr_type;
typedef struct
{
VIO_Spr_type a, d, s;
VIO_Spr_type se;
VIO_Spr_type t;
} VIO_Surfprop;
/* --- access the given element of the surface property */
#define Surfprop_a( surfprop ) ((surfprop).a)
#define Surfprop_d( surfprop ) ((surfprop).d)
#define Surfprop_s( surfprop ) ((surfprop).s)
#define Surfprop_se( surfprop ) ((surfprop).se)
#define Surfprop_t( surfprop ) ((surfprop).t)
/* --- assign all elements of the structure, s */
#define fill_Surfprop( s, amb, diff, spec, spec_exp, trans ) \
{ \
Surfprop_a(s) = (Spr_type) (amb); \
Surfprop_d(s) = (Spr_type) (diff); \
Surfprop_s(s) = (Spr_type) (spec); \
Surfprop_se(s) = (Spr_type) (spec_exp); \
Surfprop_t(s) = (Spr_type) (trans); \
}
/* ----------------------------- MNI Header -----------------------------------
@NAME : Transform_2d type
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: A 2D transform type and macros for element access.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
typedef double VIO_Transform_elem_type;
typedef struct
{
VIO_Transform_elem_type m2d[2][3];
} VIO_Transform_2d;
#define Transform_2d_elem( t, i, j ) ((t).m2d[i][j])
/* ----------------------------- MNI Header -----------------------------------
@NAME : Transform type
@INPUT :
@OUTPUT :
@RETURNS :
@DESCRIPTION: A 3D transform type and macros for element access.
@METHOD :
@GLOBALS :
@CALLS :
@CREATED : 1993 David MacDonald
@MODIFIED :
---------------------------------------------------------------------------- */
typedef struct
{
VIO_Transform_elem_type m[4][4];
} VIO_Transform;
#define Transform_elem( t, i, j ) ((t).m[j][i])
#if !VIO_PREFIX_NAMES
typedef VIO_Transform Transform;
typedef VIO_Vector Vector;
typedef VIO_Colour Colour;
typedef VIO_Transform_2d Transform_2d;
typedef VIO_Transform_elem_type Transform_elem_type;
typedef VIO_Spr_type Spr_type;
typedef VIO_Surfprop Surfprop;
/* Th 'Point' typedef is annoying to Mac OS users, since Point has been
* a basic type on Macs since the beginning. Testing __MACTYPES__ should
* work at least with the OS X codebase, I don't know if it existed in
* earlier versions of the MacTypes.h header.
*/
#ifndef __MACTYPES__
typedef VIO_Point Point;
#endif /* __MACTYPES__ not defined */
typedef VIO_Point_coord_type Point_coord_type;
#endif /* !VIO_PREFIX_NAMES */
#endif /* DEF_GEOM_STRUCTS */
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