96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTHUTIL_ATLAS_BUILDER_H
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#define OSGEARTHUTIL_ATLAS_BUILDER_H
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#include <osgEarth/Common>
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#include <osgEarth/ResourceLibrary>
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#include <osg/Vec4f>
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#include <vector>
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namespace osgDB {
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class Options;
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}
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namespace osgEarth { namespace Contrib
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{
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using namespace osgEarth;
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/**
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* Compiles a resource library into a texture atlas.
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*/
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class OSGEARTH_EXPORT AtlasBuilder
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{
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public:
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struct Atlas
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{
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// resulting atlas images. The first one is the master atlas image;
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// any following ones correspond to images created based on auxiliary
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// patterns added with addAuxFilePattern.
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std::vector<osg::ref_ptr<osg::Image> > _images;
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// resulting resource library for the atlas
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osg::ref_ptr<ResourceLibrary> _lib;
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};
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public:
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/** Construct a new atlas builder */
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AtlasBuilder(const osgDB::Options* options =0L);
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/** Sets the maximum size of each layer in the output atlas */
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void setSize(unsigned width, unsigned height);
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/** Adds an auxiliary file pattern that should be built, along with the
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default RGBA to use when the aux file doesn't exist. */
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void addAuxFilePattern(const std::string& pattern, const osg::Vec4f& defRGBA);
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/** List of aux file patterns */
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const std::vector<std::string>& auxFilePatterns() const { return _auxPatterns; }
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const std::vector<osg::Vec4f>& auxDefaultValues() const { return _auxDefaults; }
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/**
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* Whether to generate an RGB texture. By default RGBA textures are created.
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*/
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bool getRGB() const { return _rgb; }
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void setRGB( bool rgb ) { _rgb = rgb; }
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/** Builds an atlas. */
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bool build(
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const ResourceLibrary* input,
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const std::string& newAtlasURI,
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Atlas& output) const;
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protected:
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unsigned _width;
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unsigned _height;
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osg::ref_ptr<const osgDB::Options> _options;
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std::vector<std::string> _auxPatterns;
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std::vector<osg::Vec4f> _auxDefaults;
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bool _debug;
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bool _rgb;
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};
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} }
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#endif // OSGEARTHUTIL_ATLAS_BUILDER_H
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