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// Copyright (c) 2019, Joseph Mirabel |
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// Authors: Joseph Mirabel (joseph.mirabel@laas.fr) |
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// |
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// This file is part of gepetto-viewer. |
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// gepetto-viewer is free software: you can redistribute it |
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// and/or modify it under the terms of the GNU Lesser General Public |
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// License as published by the Free Software Foundation, either version |
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// 3 of the License, or (at your option) any later version. |
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// |
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// gepetto-viewer is distributed in the hope that it will be |
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// General Lesser Public License for more details. You should have |
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// received a copy of the GNU Lesser General Public License along with |
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// gepetto-viewer. If not, see <http://www.gnu.org/licenses/>. |
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#include <osg/ArgumentParser> |
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#include <osg/LOD> |
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#include <osgDB/ReadFile> |
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#include <osgDB/WriteFile> |
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#include <osgUtil/Simplifier> |
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int main(int argc, char** argv) { |
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osg::ArgumentParser arguments(&argc, argv); |
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osg::ApplicationUsage* au(arguments.getApplicationUsage()); |
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au->setCommandLineUsage(arguments.getApplicationName() + " [options]"); |
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au->addCommandLineOption("-i <file> or --input <file>", "Read file"); |
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au->addCommandLineOption("-s or --simplify", |
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"Add to LOD node a simplified version of the input. " |
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"Value must be ratio,mindist,maxdist"); |
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au->addCommandLineOption("-o <file> or --output <file>", |
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"Write current LOD node to file."); |
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osg::ApplicationUsage::Type help(arguments.readHelpType()); |
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std::string inputFilename, outputFilename; |
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std::vector<float> ratios, minDists, maxDists; |
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bool usage = (help != osg::ApplicationUsage::NO_HELP); |
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if (!arguments.read("-i", inputFilename) && |
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!arguments.read("--input", inputFilename)) { |
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usage = true; |
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} |
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if (!arguments.read("-o", outputFilename) && |
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!arguments.read("--output", outputFilename)) { |
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usage = true; |
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} |
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std::string str; |
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float ratio, minDist, maxDist; |
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while (arguments.read("-s", str) || arguments.read("--simplify", str)) { |
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if (sscanf(str.c_str(), "%f,%f,%f", &ratio, &minDist, &maxDist) != 3) { |
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std::cerr << "Simplifier argument format incorrect." << std::endl; |
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return 1; |
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} |
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ratios.push_back(ratio); |
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minDists.push_back(minDist); |
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maxDists.push_back(maxDist); |
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} |
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if (ratios.size() == 0) usage = true; |
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arguments.reportRemainingOptionsAsUnrecognized(osg::ArgumentParser::BENIGN); |
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if (arguments.errors(osg::ArgumentParser::CRITICAL)) { |
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arguments.writeErrorMessages(std::cout); |
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} else if (arguments.errors(osg::ArgumentParser::BENIGN)) { |
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arguments.writeErrorMessages(std::cout); |
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} |
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if (usage) { |
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au->write(std::cout, help, 80, true); |
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return 1; |
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} |
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osg::ref_ptr<osg::Node> input = osgDB::readNodeFile(inputFilename); |
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osg::ref_ptr<osg::LOD> lod = new osg::LOD; |
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osgUtil::Simplifier simplifier; |
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for (std::size_t i = 0; i < ratios.size(); ++i) { |
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std::cout << "Simplifying with " << ratios[i] << ", " << minDists[i] << ", " |
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<< maxDists[i] << std::endl; |
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ratio = ratios[i]; |
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osg::ref_ptr<osg::Node> simplified; |
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if (ratio == 1) { |
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simplified = input; |
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} else { |
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simplifier.setSampleRatio(ratio); |
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simplified = |
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dynamic_cast<osg::Node*>(input->clone(osg::CopyOp::DEEP_COPY_ALL)); |
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simplified->accept(simplifier); |
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} |
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lod->addChild(simplified, minDists[i], maxDists[i]); |
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} |
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osgDB::writeNodeFile(*lod, outputFilename); |
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return 0; |
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} |
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