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