/
itkNumericTraitsRGBAPixel.h
229 lines (196 loc) · 5.8 KB
/
itkNumericTraitsRGBAPixel.h
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkNumericTraitsRGBAPixel_h
#define itkNumericTraitsRGBAPixel_h
#include "itkNumericTraits.h"
#include "itkRGBAPixel.h"
namespace itk
{
/**
* \brief Define numeric traits for RGBAPixel.
* \tparam T Component type of RBGAPixel
*
* We provide here a generic implementation based on creating types of
* RGBAPixel whose components are the types of the NumericTraits from
* the original RGBAPixel components. This implementation require
* support for partial specializations, since it is based on the
* concept that:
* NumericTraits<RGBAPixel< T > > is defined piecewise by
* RGBAPixel< NumericTraits< T > >
*
* \sa NumericTraits
* \ingroup DataRepresentation
* \ingroup ITKCommon
*/
template <typename T>
class NumericTraits<RGBAPixel<T>>
{
private:
using ElementAbsType = typename NumericTraits<T>::AbsType;
using ElementAccumulateType = typename NumericTraits<T>::AccumulateType;
using ElementFloatType = typename NumericTraits<T>::FloatType;
using ElementPrintType = typename NumericTraits<T>::PrintType;
using ElementRealType = typename NumericTraits<T>::RealType;
public:
/** Return the type of the native component type. */
using ValueType = T;
using Self = RGBAPixel<T>;
/** Unsigned component type */
using AbsType = RGBAPixel<ElementAbsType>;
/** Accumulation of addition and multiplication. */
using AccumulateType = RGBAPixel<ElementAccumulateType>;
/** Typedef for operations that use floating point instead of real precision
*/
using FloatType = RGBAPixel<ElementFloatType>;
/** Return the type that can be printed. */
using PrintType = RGBAPixel<ElementPrintType>;
/** Type for real-valued scalar operations. */
using RealType = RGBAPixel<ElementRealType>;
/** Type for real-valued scalar operations. */
using ScalarRealType = ElementRealType;
/** Measurement vector type */
using MeasurementVectorType = Self;
/** Component wise defined elements
*
* \note minimum value for floating pointer types is defined as
* minimum positive normalize value.
*/
static const Self
max(const Self &)
{
return MakeFilled<Self>(NumericTraits<T>::max());
}
static const Self
min(const Self &)
{
return MakeFilled<Self>(NumericTraits<T>::min());
}
static const Self
max()
{
return MakeFilled<Self>(NumericTraits<T>::max());
}
static const Self
min()
{
return MakeFilled<Self>(NumericTraits<T>::min());
}
static const Self
NonpositiveMin()
{
return MakeFilled<Self>(NumericTraits<T>::NonpositiveMin());
}
static const Self
ZeroValue()
{
return MakeFilled<Self>(NumericTraits<T>::ZeroValue());
}
static const Self
OneValue()
{
return MakeFilled<Self>(NumericTraits<T>::OneValue());
}
static const Self
NonpositiveMin(const Self &)
{
return NonpositiveMin();
}
static const Self
ZeroValue(const Self &)
{
return ZeroValue();
}
static const Self
OneValue(const Self &)
{
return OneValue();
}
/** Is a given value positive? */
static bool
IsPositive(Self val)
{
return NumericTraits<typename Self::LuminanceType>::IsPositive(val.GetLuminance());
}
/** Is a given value nonpositive? */
static bool
IsNonpositive(Self val)
{
return NumericTraits<typename Self::LuminanceType>::IsNonpositive(val.GetLuminance());
}
/** Is a given value negative? */
static bool
IsNegative(Self val)
{
return NumericTraits<typename Self::LuminanceType>::IsNegative(val.GetLuminance());
}
/** Is a given value nonnegative? */
static bool
IsNonnegative(Self val)
{
return NumericTraits<typename Self::LuminanceType>::IsNonnegative(val.GetLuminance());
}
static constexpr bool IsSigned = std::is_signed_v<ValueType>;
static constexpr bool IsInteger = std::is_integral_v<ValueType>;
static constexpr bool IsComplex = NumericTraits<ValueType>::IsComplex;
/** RGBA pixels must have 4 components, so the size cannot be
* set to anything besides 4. If called with size of 4, this
* function will fill the pixel with zeros. */
static void
SetLength(RGBAPixel<T> & m, const unsigned int s)
{
if (s != 4)
{
itkGenericExceptionMacro("Cannot set the size of a RGBAPixel to anything other "
"than 4.");
}
m.Fill(NumericTraits<T>::ZeroValue());
}
/** Return the dimensionality of the pixel. Always returns 4. */
static unsigned int
GetLength(const RGBAPixel<T> &)
{
return 4;
}
/** Return the dimensionality of the pixel. Always returns 4. */
static unsigned int
GetLength()
{
return 4;
}
static void
AssignToArray(const Self & v, MeasurementVectorType & mv)
{
mv = v;
}
template <typename TArray>
static void
AssignToArray(const Self & v, TArray & mv)
{
for (unsigned int i = 0; i < 4; ++i)
{
mv[i] = v[i];
}
}
/** \note: the functions are preferred over the member variables as
* they are defined for all partial specialization
*/
static const Self ITKCommon_EXPORT Zero;
static const Self ITKCommon_EXPORT One;
};
} // end namespace itk
#endif // itkNumericTraitsRGBAPixel_h