CTK  0.1.0
The Common Toolkit is a community effort to provide support code for medical image analysis, surgical navigation, and related projects.
ctkTransferFunction.h
Go to the documentation of this file.
1 /*=========================================================================
2 
3  Library: CTK
4 
5  Copyright (c) Kitware Inc.
6 
7  Licensed under the Apache License, Version 2.0 (the "License");
8  you may not use this file except in compliance with the License.
9  You may obtain a copy of the License at
10 
11  http://www.apache.org/licenses/LICENSE-2.0.txt
12 
13  Unless required by applicable law or agreed to in writing, software
14  distributed under the License is distributed on an "AS IS" BASIS,
15  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  See the License for the specific language governing permissions and
17  limitations under the License.
18 
19 =========================================================================*/
20 
21 #ifndef __ctkTransferFunction_h
22 #define __ctkTransferFunction_h
23 
25 #include <QObject>
26 #include <QtGlobal>
27 #include <QSharedPointer>
28 #include <QVariant>
29 
31 #include "ctkPimpl.h"
32 #include "ctkWidgetsExport.h"
33 
34 class ctkTransferFunctionPrivate;
36 
37 //-----------------------------------------------------------------------------
39 struct CTK_WIDGETS_EXPORT ctkPoint
40 {
42  :X(0),Value(0)
43  {
44  }
45  ctkPoint(qreal x, const QVariant& v)
46  :X(x),Value(v)
47  {
48  }
49  qreal X;
50  // QColor or qreal.
51  QVariant Value;
52 };
53 
54 //-----------------------------------------------------------------------------
58 struct CTK_WIDGETS_EXPORT ctkControlPoint
59 {
60  virtual ~ctkControlPoint();
61  inline const qreal& x()const {return this->P.X;}
62  inline const QVariant& value()const {return this->P.Value;}
64 };
65 
66 //-----------------------------------------------------------------------------
68 struct CTK_WIDGETS_EXPORT ctkBezierControlPoint : public ctkControlPoint
69 {
73 };
74 
75 //-----------------------------------------------------------------------------
77 struct CTK_WIDGETS_EXPORT ctkNonLinearControlPoint : public ctkControlPoint
78 {
81 };
82 
83 //-----------------------------------------------------------------------------
85 class CTK_WIDGETS_EXPORT ctkTransferFunction: public QObject
86 {
87  Q_OBJECT
88 public:
89  ctkTransferFunction(QObject* parent = 0);
91 
92  virtual ctkControlPoint* controlPoint(int index)const = 0;
93  inline QVariant value(int index)const;
94  virtual QVariant value(qreal pos)const = 0;
95 
96  virtual int count()const = 0;
97  virtual bool isDiscrete()const = 0;
98  virtual bool isEditable()const = 0;
99 
100  inline void range(qreal rangeValues[2])const;
101  virtual void range(qreal& minRange, qreal& maxRange)const=0;
102  virtual QVariant minValue()const = 0;
103  virtual QVariant maxValue()const = 0;
104  inline void valueRange(QVariant range[2])const;
106  virtual int insertControlPoint(const ctkControlPoint& cp) = 0;
107  virtual int insertControlPoint(qreal pos) = 0;
108 
109  virtual void removeControlPoint( qreal pos ) = 0;
110 
114  virtual void setControlPointPos(int index, qreal pos)=0;
118  virtual void setControlPointValue(int index, const QVariant& value)=0;
119 
121 Q_SIGNALS:
122  void changed();
123 protected:
124  QScopedPointer<ctkTransferFunctionPrivate> d_ptr;
125 
126 private:
127  Q_DECLARE_PRIVATE(ctkTransferFunction);
128  Q_DISABLE_COPY(ctkTransferFunction);
129 };
130 
131 //-----------------------------------------------------------------------------
132 QVariant ctkTransferFunction::value(int index)const
133 {
134  QSharedPointer<ctkControlPoint> cp(this->controlPoint(index));
135  return cp->P.Value;
136 }
137 
138 //-----------------------------------------------------------------------------
139 void ctkTransferFunction::range(qreal rangeValues[2])const
140 {
141  this->range(rangeValues[0], rangeValues[1]);
142 }
143 
144 //-----------------------------------------------------------------------------
145 void ctkTransferFunction::valueRange(QVariant rangeValues[2])const
146 {
147  rangeValues[0] = this->minValue();
148  rangeValues[1] = this->maxValue();
149 }
150 
151 #endif
virtual QVariant value(qreal pos) const =0
virtual bool isEditable() const =0
virtual ctkControlPoint * controlPoint(int index) const =0
virtual void setControlPointPos(int index, qreal pos)=0
virtual void removeControlPoint(qreal pos)=0
virtual void setControlPointValue(int index, const QVariant &value)=0
virtual int insertControlPoint(qreal pos)=0
virtual QVariant minValue() const =0
ctkTransferFunctionRepresentation * representation() const
ctkTransferFunction(QObject *parent=0)
virtual int count() const =0
void valueRange(QVariant range[2]) const
QVariant value(int index) const
virtual void range(qreal &minRange, qreal &maxRange) const =0
virtual bool isDiscrete() const =0
void range(qreal rangeValues[2]) const
QScopedPointer< ctkTransferFunctionPrivate > d_ptr
virtual ~ctkTransferFunction()
virtual int insertControlPoint(const ctkControlPoint &cp)=0
virtual QVariant maxValue() const =0
virtual ~ctkBezierControlPoint()
virtual ~ctkControlPoint()
const qreal & x() const
const QVariant & value() const
virtual ~ctkNonLinearControlPoint()
QVariant Value
ctkPoint(qreal x, const QVariant &v)