osgEarth 2.1.1

/home/cube/sources/osgearth/src/osgEarthDrivers/model_feature_stencil/StencilUtils.h

Go to the documentation of this file.
00001 /* -*-c++-*- */
00002 /* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
00003  * Copyright 2008-2009 Pelican Ventures, Inc.
00004  * http://osgearth.org
00005  *
00006  * osgEarth is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU Lesser General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public License
00017  * along with this program.  If not, see <http://www.gnu.org/licenses/>
00018  */
00019 #ifndef OSGEARTH_MODEL_FEATURE_STENCIL_STENCIL_UTILS_H
00020 #define OSGEARTH_MODEL_FEATURE_STENCIL_STENCIL_UTILS_H 1
00021 
00022 #include <osg/Node>
00023 #include <osg/Geode>
00024 #include <osg/Group>
00025 #include <osgEarthFeatures/Geometry>
00026 #include <osgEarthFeatures/Filter>
00027 #include <osgEarthFeatures/Styling>
00028 
00029 using namespace osgEarth::Features;
00030 
00031 struct StencilUtils
00032 {
00033     static osg::Node* createGeometryPass( 
00034         osg::Node* geometry,
00035         int& ref_renderBin );
00036 
00037     static osg::Node* createMaskPass(
00038         const osg::Vec4ub& color,
00039         int& ref_renderBin );
00040 
00041     static osg::Geode* createVolume(
00042         Geometry*            geom,
00043         double               offset,
00044         double               height,
00045         const FilterContext& context );
00046 };
00047 
00048 class StencilVolumeNode : public osg::Group
00049 {
00050 public:
00051     StencilVolumeNode();
00052     StencilVolumeNode( const StencilVolumeNode& rhs, const osg::CopyOp& op =osg::CopyOp::DEEP_COPY_ALL );
00053 
00054     META_Node(osgEarth::Features,StencilVolumeNode);
00055 
00056     // sets the render bins and returns the next available bin.
00057     int setBaseRenderBin( int bin );
00058 
00059     // sets the render color
00060     void setColor( const osg::Vec4f& color );
00061 
00062     // adds volume geometry to the node
00063     void addVolumes( osg::Node* node );
00064 
00065 protected:
00066     void init();
00067 
00068     osg::Group* _stencilGroup1;
00069     osg::Group* _stencilGroup2;
00070     osg::Group* _maskGroup;
00071     osg::Vec4Array* _maskColorArray;
00072 };
00073 
00074 
00075 #endif // OSGEARTH_MODEL_FEATURE_STENCIL_STENCIL_UTILS_H
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines