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
132
133
|
/*
* Copyright (c) 2008-2017, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, related documentation
* and any modifications thereto. Any use, reproduction, disclosure or
* distribution of this software and related documentation without an express
* license agreement from NVIDIA CORPORATION is strictly prohibited.
*/
#ifndef __APEX_GENERALIZED_CUBE_TEMPLATES_H__
#define __APEX_GENERALIZED_CUBE_TEMPLATES_H__
#include "ApexUsingNamespace.h"
#include "PsUserAllocated.h"
#include "PsArray.h"
#include "PxVec3.h"
namespace nvidia
{
namespace apex
{
class ApexGeneralizedCubeTemplates : public UserAllocated
{
public:
ApexGeneralizedCubeTemplates();
void getTriangles(const int groups[8], physx::Array<int32_t> &indices);
private:
enum AllConsts
{
GEN_NUM_SUB_CELLS = 6,
SUB_GRID_LEN = GEN_NUM_SUB_CELLS,
SUB_GRID_LEN_2 = GEN_NUM_SUB_CELLS * GEN_NUM_SUB_CELLS,
NUM_SUB_CELLS = GEN_NUM_SUB_CELLS * GEN_NUM_SUB_CELLS * GEN_NUM_SUB_CELLS,
NUM_CUBE_VERTS = 19,
NUM_CASES_3 = 6561, // 2^8
};
struct GenSubCell
{
inline void init()
{
group = -1;
marked = false;
}
int32_t group;
bool marked;
};
struct GenCoord
{
void init(int32_t xi, int32_t yi, int32_t zi)
{
this->xi = xi;
this->yi = yi;
this->zi = zi;
}
bool operator == (const GenCoord& c) const
{
return xi == c.xi && yi == c.yi && zi == c.zi;
}
int32_t xi, yi, zi;
};
void createLookupTable3();
void setCellGroups(const int32_t groups[8]);
void splitDisconnectedGroups();
void findVertices();
void createTriangles(physx::Array<int32_t>& currentIndices);
bool isEdge(const GenCoord& c, int32_t dim, int32_t group0, int32_t group1);
inline uint32_t cellNr(uint32_t x, uint32_t y, uint32_t z)
{
return x * SUB_GRID_LEN_2 + y * SUB_GRID_LEN + z;
}
inline int32_t groupAt(int32_t x, int32_t y, int32_t z)
{
if (x < 0 || x >= SUB_GRID_LEN || y < 0 || y >= SUB_GRID_LEN || z < 0 || z >= SUB_GRID_LEN)
{
return -1;
}
return mSubGrid[x * SUB_GRID_LEN_2 + y * SUB_GRID_LEN + z].group;
}
inline bool vertexMarked(const GenCoord& c)
{
if (c.xi < 0 || c.xi > SUB_GRID_LEN || c.yi < 0 || c.yi > SUB_GRID_LEN || c.zi < 0 || c.zi > SUB_GRID_LEN)
{
return false;
}
return mVertexMarked[c.xi][c.yi][c.zi];
}
inline void markVertex(const GenCoord& c)
{
if (c.xi < 0 || c.xi > SUB_GRID_LEN || c.yi < 0 || c.yi > SUB_GRID_LEN || c.zi < 0 || c.zi > SUB_GRID_LEN)
{
return;
}
mVertexMarked[c.xi][c.yi][c.zi] = true;
}
float mBasis[NUM_SUB_CELLS][8];
PxVec3 mVertPos[NUM_CUBE_VERTS];
int mVertexAt[SUB_GRID_LEN + 1][SUB_GRID_LEN + 1][SUB_GRID_LEN + 1];
bool mVertexMarked[SUB_GRID_LEN + 1][SUB_GRID_LEN + 1][SUB_GRID_LEN + 1];
GenSubCell mSubGrid[NUM_SUB_CELLS];
int32_t mFirst3[NUM_CASES_3]; // 3^8
physx::Array<int32_t> mLookupIndices3;
int32_t mFirstPairVertex[8][8];
GenCoord mFirstPairCoord[8][8];
};
}
} // end namespace nvidia::apex
#endif
|