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
|
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#include "GuConvexEdgeFlags.h"
#include "GuFeatureCode.h"
using namespace physx;
using namespace Gu;
static FeatureCode computeFeatureCode(PxReal u, PxReal v)
{
// Analysis
if(u==0.0f)
{
if(v==0.0f)
{
// Vertex 0
return FC_VERTEX0;
}
else if(v==1.0f)
{
// Vertex 2
return FC_VERTEX2;
}
else
{
// Edge 0-2
return FC_EDGE20;
}
}
else if(u==1.0f)
{
if(v==0.0f)
{
// Vertex 1
return FC_VERTEX1;
}
}
else
{
if(v==0.0f)
{
// Edge 0-1
return FC_EDGE01;
}
else
{
if((u+v)>=0.9999f)
{
// Edge 1-2
return FC_EDGE12;
}
else
{
// Face
return FC_FACE;
}
}
}
return FC_UNDEFINED;
}
bool Gu::selectNormal(PxU8 data, PxReal u, PxReal v)
{
bool useFaceNormal = false;
const FeatureCode FC = computeFeatureCode(u, v);
switch(FC)
{
case FC_VERTEX0:
if(!(data & (Gu::ETD_CONVEX_EDGE_01|Gu::ETD_CONVEX_EDGE_20)))
useFaceNormal = true;
break;
case FC_VERTEX1:
if(!(data & (Gu::ETD_CONVEX_EDGE_01|Gu::ETD_CONVEX_EDGE_12)))
useFaceNormal = true;
break;
case FC_VERTEX2:
if(!(data & (Gu::ETD_CONVEX_EDGE_12|Gu::ETD_CONVEX_EDGE_20)))
useFaceNormal = true;
break;
case FC_EDGE01:
if(!(data & Gu::ETD_CONVEX_EDGE_01))
useFaceNormal = true;
break;
case FC_EDGE12:
if(!(data & Gu::ETD_CONVEX_EDGE_12))
useFaceNormal = true;
break;
case FC_EDGE20:
if(!(data & Gu::ETD_CONVEX_EDGE_20))
useFaceNormal = true;
break;
case FC_FACE:
useFaceNormal = true;
break;
case FC_UNDEFINED:
break;
};
return useFaceNormal;
}
|