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def.h
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def.h
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/*
* def.h contains some useful definitions for "C" programs.
*
* Author: Eric Haines
*
* Modified: 1 October 1992
* Alexander R. Enzmann
* Modified: 14 December 1992 - Better Mac (MPW) compatibility
* Eduard [esp] Schwan
* Modified: 2 August 1993 - More ANSI C & Mac compatibility fixes
* Eduard [esp] Schwan
* Modified: 4 September 1993 - Added one more generator (LATTICE)
* Antonio [acc] Costa
* Modified: 6 September 1993 - Changed LATTICE to GENERIC, other renames
* Eric Haines
* Modified: 16 September 1993 - Added SPD_LATTICE & SPD_SHELLS defines
* Eduard [esp] Schwan
* Modified: 27 July 1994 - Added __MWERKS__ define for Metrowerks compiler
* Eduard [esp] Schwan
* Modified: 2 November 1994 - Added COMB_COORD
* Alexander R. Enzmann
* Modified: 6 January 1998 - Added PLATFORM_PROGRESS and ANSI_FN_DEF
* Eduard [esp] Schwan
* Modified: 1 December 2012 - Fix typo for COORD3
* Sam [sbt] Thompson
*
*/
#ifndef DEF_H
#define DEF_H
#if __cplusplus
extern "C" {
#endif
/*
* Each data base/program is defined here. These are used as
* parameters to the PLATFORM_INIT() macro, in case the programs
* need to behave differently based on the type of db run. For
* example, the Macintosh version must prompt the user for input
* parameters instead of getting them on the command line. This
* allows the Mac to use a different dialog box for each program.
*/
#define SPD_MIN 1
#define SPD_BALLS 1
#define SPD_GEARS 2
#define SPD_MOUNT 3
#define SPD_RINGS 4
#define SPD_TEAPOT 5
#define SPD_TETRA 6
#define SPD_TREE 7
#define SPD_READDXF 8
#define SPD_LATTICE 9
#define SPD_SHELLS 10
#define SPD_READNFF 11
#define SPD_READOBJ 12
#define SPD_JACKS 13
#define SPD_SOMBRERO 14
#define SPD_NURBTST 15
#define SPD_GENERIC 16
#define SPD_MAX SPD_GENERIC
/* ---- Macintosh-specific definitions here ---- */
#if defined(applec) || defined(THINK_C) || defined(__MWERKS__)
// insert ANSI prototypes in function forward decls.
#define PARAMS(x) x
// Use ANSI function definitions, not K&R style
#define ANSI_FN_DEF 1
/* If OUTPUT_TO_FILE is defined, output goes to new text file, not to stdout */
#define OUTPUT_TO_FILE true
#define PLATFORM_INIT(spdType) MacInit(&argc, &argv, spdType)
#define PLATFORM_PROGRESS(STARTVAL,CURRVAL,ENDVAL) MacProgress(STARTVAL,CURRVAL,ENDVAL)
#define PLATFORM_MULTITASK() MacMultiTask()
#define PLATFORM_SHUTDOWN() MacShutDown()
#define EPSILON 1.0e-15
#define EPSILON2 1.0e-7
#if defined(__MWERKS__)
// Stupid bug in CW6 where Apple headers declare NULL as "0",
// and Metrowerks sometimes just pushes a short instead of a long
// onto the stack where the K&R function expects a long!
#undef NULL
#define NULL ((void*)0L)
// If Metrowerks, ignore the old K&R style function prototypes in the code,
// since some horrible CW parse errors occur otherwise!
#if defined (__MWERKS__)
#pragma ignore_oldstyle on
#endif // CodeWarrior
#endif
#if defined(applec)
#include <math.h>
#define PI pi()
#endif /* applec */
/*
* declared in drv_mac.c
*/
extern void MacInit(int *argcp, char ***argvp, int spdType);
extern void MacProgress(int STARTVAL,int CURRVAL,int ENDVAL);
extern void MacMultiTask(void);
extern void MacShutDown(void);
#endif /* applec || THINK_C */
/* Use "PARAMS(x) ()" above if your compiler can't handle function prototyping,
* "PARAMS(x) x" if it can use ANSI headers.
*/
#ifndef PARAMS
/* check if ANSI headers should be available */
#if __STDC__ || defined(__cplusplus)
/* yes, ANSI headers */
#define PARAMS(x) x
#else
/* no, no ANSI headers */
#define PARAMS(x) ()
#endif
#endif
/*
* PLATFORM_xxx macros are used to allow different OS platforms
* hooks to do their own initialization, periodic tasks, and
* shutdown cleanup, if needed. [esp]
*/
#ifndef PLATFORM_INIT
#define PLATFORM_INIT(spdType)
#endif /* PLATFORM_INIT */
#ifndef PLATFORM_MULTITASK
#define PLATFORM_MULTITASK()
#endif /* PLATFORM_MULTITASK */
/* Allows percent-complete progress indicator during generation */
#ifndef PLATFORM_PROGRESS
#define PLATFORM_PROGRESS(STARTVAL,CURRVAL,ENDVAL)
#endif /* PLATFORM_PROGRESS */
#ifndef PLATFORM_SHUTDOWN
#define PLATFORM_SHUTDOWN()
#endif /* PLATFORM_SHUTDOWN */
/* exit codes - define as you wish */
#define EXIT_SUCCESS 0
#define EXIT_FAIL 1
#ifndef EPSILON
#define EPSILON 1.0e-8
#endif
#ifndef EPSILON2
#define EPSILON2 1.0e-6
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef NULL
#define NULL 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef PI
#define PI 3.141592653589793
#endif
typedef double MATRIX[4][4]; /* row major form */
typedef double COORD3[3];
typedef double COORD4[4];
/* COORD3/COORD4 indices */
#define X 0
#define Y 1
#define Z 2
#define W 3
/* COORD3 (color) indices */
#define R_COLOR 0
#define G_COLOR 1
#define B_COLOR 2
#define POW(A,B) ( (A) == 0.0 ? 0.0 : ( (B) == 0.0 ? 1.0 : pow(A, B) ) )
#define SGN(A) ( (A) < 0.0 ? -1.0 : ( (A) > 0.0 ? 1.0 : 0.0) )
#define ABSOLUTE(A) ( (A) < 0 ? -(A) : (A) )
#define FRACTION(A) ( (A) - (int)(A) )
#define MAX(A,B) ( (A) > (B) ? (A) : (B) )
#define MIN(A,B) ( (A) < (B) ? (A) : (B) )
#define SQR(A) ( (A) * (A) )
#define IS_VAL_ALMOST_ZERO(A,E) ( ABSOLUTE(A) <= (E) )
#define ADD2_COORD3(r,a) { (r)[X] += (a)[X]; (r)[Y] += (a)[Y];\
(r)[Z] += (a)[Z]; }
#define ADD3_COORD3(r,a,b) { (r)[X] = (a)[X] + (b)[X];\
(r)[Y] = (a)[Y] + (b)[Y];\
(r)[Z] = (a)[Z] + (b)[Z]; }
#define COPY_COORD3(r,a) { (r)[X] = (a)[X];\
(r)[Y] = (a)[Y];\
(r)[Z] = (a)[Z];}
#define COPY_COORD4(r,a) { (r)[X] = (a)[X];\
(r)[Y] = (a)[Y];\
(r)[Z] = (a)[Z];\
(r)[W] = (a)[W]; }
#define CROSS(r,a,b) { (r)[X] = (a)[Y] * (b)[Z] - (a)[Z] * (b)[Y];\
(r)[Y] = (a)[Z] * (b)[X] - (a)[X] * (b)[Z];\
(r)[Z] = (a)[X] * (b)[Y] - (a)[Y] * (b)[X]; }
#define DOT_PRODUCT(a,b) ( (a)[X] * (b)[X] +\
(a)[Y] * (b)[Y] +\
(a)[Z] * (b)[Z] )
#define DOT4(a,b) ( (a)[X] * (b)[X] +\
(a)[Y] * (b)[Y] +\
(a)[Z] * (b)[Z] +\
(a)[W] * (b)[W] )
#define IS_COORD3_ALMOST_ZERO(a,E) (\
IS_VAL_ALMOST_ZERO( (a)[X], (E) )\
&& IS_VAL_ALMOST_ZERO( (a)[Y], (E) )\
&& IS_VAL_ALMOST_ZERO( (a)[Z], (E) ) )
#define SET_COORD3(r,A,B,C) { (r)[X] = (A); (r)[Y] = (B); (r)[Z] = (C); }
#define SET_COORD4(r,A,B,C,D) { (r)[X] = (A); (r)[Y] = (B); (r)[Z] = (C);\
(r)[W] = (D); }
#define SUB2_COORD3(r,a) { (r)[X] -= (a)[X]; (r)[Y] -= (a)[Y];\
(r)[Z] -= (a)[Z]; }
#define SUB3_COORD3(r,a,b) { (r)[X] = (a)[X] - (b)[X];\
(r)[Y] = (a)[Y] - (b)[Y];\
(r)[Z] = (a)[Z] - (b)[Z]; }
#define LERP_COORD(r, a, b, u) { (r)[X] = (a)[X] + (u) * ((b)[X] - (a)[X]);\
(r)[Y] = (a)[Y] + (u) * ((b)[Y] - (a)[Y]);\
(r)[Z] = (a)[Z] + (u) * ((b)[Z] - (a)[Z]); }
#define COMB_COORD(r, a, b, u, v) { (r)[X] = (a)[X] * (u) + (b)[X] * (v);\
(r)[Y] = (a)[Y] * (u) + (b)[X] * (v);\
(r)[Z] = (a)[Z] * (u) + (b)[X] * (v); }
#define RAD2DEG(x) (180.0*(x)/3.1415926535897932384626)
#define DEG2RAD(x) (3.1415926535897932384626*(x)/180.0)
#if __cplusplus
}
#endif
#endif /* DEF_H */