1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/****************************************************************************
* isosurf.h
*
* This module contains all defines, typedefs, and prototypes for isosurf.cpp.
*
* This module was written by D.Skarda & T.Bily and modified by R.Suzuki.
* Ported to POV-Ray 3.5 by Thorsten Froehlich.
*
* from Persistence of Vision(tm) Ray Tracer version 3.6.
* Copyright 1991-2003 Persistence of Vision Team
* Copyright 2003-2004 Persistence of Vision Raytracer Pty. Ltd.
*---------------------------------------------------------------------------
* NOTICE: This source code file is provided so that users may experiment
* with enhancements to POV-Ray and to port the software to platforms other
* than those supported by the POV-Ray developers. There are strict rules
* regarding how you are permitted to use this file. These rules are contained
* in the distribution and derivative versions licenses which should have been
* provided with this file.
*
* These licences may be found online, linked from the end-user license
* agreement that is located at http://www.povray.org/povlegal.html
*---------------------------------------------------------------------------
* This program is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
*---------------------------------------------------------------------------
* $File: //depot/povray/3.6-release/source/isosurf.h $
* $Revision: #2 $
* $Change: 2939 $
* $DateTime: 2004/07/04 13:43:26 $
* $Author: root $
* $Log$
*****************************************************************************/
#ifndef ISOSURF_H
#define ISOSURF_H
#include "function.h"
BEGIN_POV_NAMESPACE
/*****************************************************************************
* Global preprocessor defines
******************************************************************************/
#define ISOSURFACE_OBJECT (BASIC_OBJECT)
#define ISOSURFACE_MAXTRACE 10
#define OK_X 1
#define OK_Y 2
#define OK_Z 4
#define OK_R 8
#define OK_S 16
#define OK_T 32
#define OK_U 64
#define OK_V 128
/*****************************************************************************
* Global variables
******************************************************************************/
extern METHODS IsoSurface_Methods;
/*****************************************************************************
* Global typedefs
******************************************************************************/
typedef struct IsoSurface_Struct ISOSURFACE;
typedef struct { DBL t,f; } ISO_Pair;
typedef struct
{
unsigned int refcnt;
DBL max_gradient, gradient;
DBL eval_max, eval_cnt, eval_gradient_sum, eval_var;
} ISO_Max_Gradient;
struct IsoSurface_Struct
{
OBJECT_FIELDS
FUNCTION_PTR Function;
DBL max_gradient;
DBL gradient;
DBL threshold;
DBL accuracy;
DBL eval_param[3];
int max_trace;
int Inv3;
bool closed;
bool eval;
int container_shape;
union
{
struct
{
VECTOR center;
DBL radius;
} sphere;
struct
{
VECTOR corner1;
VECTOR corner2;
} box;
} container;
// internal use only
VECTOR P,D;
DBL Vlength;
DBL tl;
DBL fmax;
ISO_Max_Gradient *mginfo;
bool cache;
};
/*****************************************************************************
* Global functions
******************************************************************************/
ISOSURFACE *Create_IsoSurface (void);
void Destroy_IsoSurface (OBJECT *Object);
void *Copy_IsoSurface (OBJECT *Object);
void Compute_IsoSurface_BBox (ISOSURFACE *Box);
END_POV_NAMESPACE
#endif
|
