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
|
/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageShiftScale.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkImageShiftScale.h"
#include "vtkImageData.h"
#include "vtkImageProgressIterator.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
vtkStandardNewMacro(vtkImageShiftScale);
//----------------------------------------------------------------------------
vtkImageShiftScale::vtkImageShiftScale()
{
this->Shift = 0.0;
this->Scale = 1.0;
this->OutputScalarType = -1;
this->ClampOverflow = 0;
}
//----------------------------------------------------------------------------
vtkImageShiftScale::~vtkImageShiftScale()
{
}
//----------------------------------------------------------------------------
void vtkImageShiftScale::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Shift: " << this->Shift << "\n";
os << indent << "Scale: " << this->Scale << "\n";
os << indent << "Output Scalar Type: " << this->OutputScalarType << "\n";
os << indent << "ClampOverflow: " << (this->ClampOverflow? "On" : "Off")
<< "\n";
}
//----------------------------------------------------------------------------
int vtkImageShiftScale::RequestInformation(vtkInformation*,
vtkInformationVector**,
vtkInformationVector* outputVector)
{
// Set the image scalar type for the output.
if(this->OutputScalarType != -1)
{
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkDataObject::SetPointDataActiveScalarInfo(
outInfo, this->OutputScalarType, -1);
}
return 1;
}
//----------------------------------------------------------------------------
// This function template implements the filter for any type of data.
// The last two arguments help the vtkTemplateMacro calls below
// instantiate the proper input and output types.
template <class IT, class OT>
void vtkImageShiftScaleExecute(vtkImageShiftScale* self,
vtkImageData* inData,
vtkImageData* outData,
int outExt[6], int id,
IT*, OT*)
{
// Create iterators for the input and output extents assigned to
// this thread.
vtkImageIterator<IT> inIt(inData, outExt);
vtkImageProgressIterator<OT> outIt(outData, outExt, self, id);
// Get the shift and scale parameters values.
double shift = self->GetShift();
double scale = self->GetScale();
// Clamp pixel values within the range of the output type.
double typeMin = outData->GetScalarTypeMin();
double typeMax = outData->GetScalarTypeMax();
int clamp = self->GetClampOverflow();
// Loop through output pixels.
while (!outIt.IsAtEnd())
{
IT* inSI = inIt.BeginSpan();
OT* outSI = outIt.BeginSpan();
OT* outSIEnd = outIt.EndSpan();
if (clamp)
{
while (outSI != outSIEnd)
{
// Pixel operation
double val = (static_cast<double>(*inSI) + shift) * scale;
if (val > typeMax)
{
val = typeMax;
}
if (val < typeMin)
{
val = typeMin;
}
*outSI = static_cast<OT>(val);
++outSI;
++inSI;
}
}
else
{
while (outSI != outSIEnd)
{
// Pixel operation
*outSI = static_cast<OT>(
(static_cast<double>(*inSI) + shift) * scale);
++outSI;
++inSI;
}
}
inIt.NextSpan();
outIt.NextSpan();
}
}
//----------------------------------------------------------------------------
template <class T>
void vtkImageShiftScaleExecute1(vtkImageShiftScale* self,
vtkImageData* inData,
vtkImageData* outData,
int outExt[6], int id, T*)
{
switch (outData->GetScalarType())
{
vtkTemplateMacro(
vtkImageShiftScaleExecute(self, inData,
outData, outExt, id,
static_cast<T*>(0),
static_cast<VTK_TT*>(0)));
default:
vtkErrorWithObjectMacro(
self, "ThreadedRequestData: Unknown output ScalarType");
return;
}
}
//----------------------------------------------------------------------------
// This method is passed a input and output data, and executes the filter
// algorithm to fill the output from the input.
// It just executes a switch statement to call the correct function for
// the datas data types.
void vtkImageShiftScale::ThreadedRequestData(vtkInformation*,
vtkInformationVector**,
vtkInformationVector*,
vtkImageData*** inData,
vtkImageData** outData,
int outExt[6],
int threadId)
{
vtkImageData* input = inData[0][0];
vtkImageData* output = outData[0];
switch(input->GetScalarType())
{
vtkTemplateMacro(
vtkImageShiftScaleExecute1(this, input, output, outExt, threadId,
static_cast<VTK_TT*>(0)));
default:
vtkErrorMacro("ThreadedRequestData: Unknown input ScalarType");
return;
}
}
|
