root/OpenSceneGraph/trunk/include/osgFX/MultiTextureControl @ 13041

Revision 13041, 1.7 kB (checked in by robert, 2 years ago)

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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version.  The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * OpenSceneGraph Public License for more details.
12*/
13
14#ifndef OSGFX_MULTITEXTURECONTROL
15#define OSGFX_MULTITEXTURECONTROL
16
17#include <osg/Group>
18
19#include <osgFX/Export>
20
21namespace osgFX
22{
23    /**
24      This node provides control over the which texture units are active and the
25      blending weighting between them.
26     */
27    class OSGFX_EXPORT MultiTextureControl: public osg::Group {
28    public:
29
30        MultiTextureControl();
31        MultiTextureControl(const MultiTextureControl& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
32
33        META_Node(osgFX, MultiTextureControl);
34
35        void setTextureWeight(unsigned int unit, float weight);
36
37        float getTextureWeight(unsigned int unit) const { return (unit<_textureWeightList.size()) ?  _textureWeightList[unit] : 0.0f; }
38
39        unsigned int getNumTextureWeights() const { return _textureWeightList.size(); }
40
41    protected:
42        virtual ~MultiTextureControl() {}
43        MultiTextureControl& operator = (const MultiTextureControl&) { return *this; }
44
45        void updateStateSet();
46
47        typedef std::vector<float> TextureWeightList;
48        TextureWeightList _textureWeightList;
49    };
50
51}
52
53#endif
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