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
|
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2013 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGUI_TRANSFERFUNCTIONWIDGET
#define OSGUI_TRANSFERFUNCTIONWIDGET
#include <osg/Group>
#include <osg/TransferFunction>
#include <osgUI/Widget>
namespace osgUI
{
class TransferFunctionWidget : public osgUI::Widget
{
public:
TransferFunctionWidget(osg::TransferFunction1D* tf=0);
TransferFunctionWidget(const TransferFunctionWidget& tfw, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
META_Node(osgUI, TransferFunctionWidget);
virtual void traverseImplementation(osg::NodeVisitor& nv);
virtual bool handleImplementation(osgGA::EventVisitor* ev, osgGA::Event* event);
void setTransferFunction(const osg::TransferFunction1D* tf);
osg::TransferFunction1D* getTransferFunction() { return _transferFunction.get(); }
const osg::TransferFunction1D* getTransferFunction() const { return _transferFunction.get(); }
void resetVisibleRange();
void setVisibleRange(float left, float right);
void translateVisibleRange(float delta);
void scaleVisibleRange(float center, float delta);
virtual void createGraphicsImplementation();
protected:
virtual ~TransferFunctionWidget() {}
osg::ref_ptr<osg::TransferFunction1D> _transferFunction;
osg::ref_ptr<osg::Geode> _geode;
osg::ref_ptr<osg::Geometry> _geometry;
osg::ref_ptr<osg::Vec3Array> _vertices;
osg::ref_ptr<osg::Vec4Array> _colours;
osg::ref_ptr<osg::DrawElementsUShort> _background_primitives;
osg::ref_ptr<osg::DrawElementsUShort> _historgram_primitives;
osg::ref_ptr<osg::DrawElementsUShort> _outline_primitives;
float _min;
float _max;
float _left;
float _right;
bool _startedDrag;
float _previousDragPosition;
};
}
#endif
|
