249 lines
8.5 KiB
C++
249 lines
8.5 KiB
C++
/* -*-c++-*-
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* Copyright (C) 2009 Cedric Pinson <cedric.pinson@plopbyte.net>
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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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#include <iostream>
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#include <osgDB/ReadFile>
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#include <osgViewer/ViewerEventHandlers>
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#include <osgGA/TrackballManipulator>
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#include <osgGA/FlightManipulator>
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#include <osgGA/DriveManipulator>
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#include <osgGA/KeySwitchMatrixManipulator>
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#include <osgGA/StateSetManipulator>
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#include <osgGA/AnimationPathManipulator>
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#include <osgGA/TerrainManipulator>
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#include <osg/Drawable>
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#include <osgAnimation/BasicAnimationManager>
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#include <osgAnimation/RigGeometry>
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#include <osgAnimation/RigTransformHardware>
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#include <osgAnimation/AnimationManagerBase>
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#include <sstream>
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static unsigned int getRandomValueinRange(unsigned int v)
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{
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return static_cast<unsigned int>((rand() * 1.0 * v)/(RAND_MAX-1));
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}
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osg::ref_ptr<osg::Program> program;
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// show how to override the default RigTransformHardware for customized usage
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struct MyRigTransformHardware : public osgAnimation::RigTransformHardware
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{
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bool init(osgAnimation::RigGeometry& geom)
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{
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osg::Vec3Array* pos = dynamic_cast<osg::Vec3Array*>(geom.getVertexArray());
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if (!pos) {
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osg::notify(osg::WARN) << "RigTransformHardware no vertex array in the geometry " << geom.getName() << std::endl;
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return false;
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}
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if (!geom.getSkeleton()) {
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osg::notify(osg::WARN) << "RigTransformHardware no skeleting set in geometry " << geom.getName() << std::endl;
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return false;
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}
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osgAnimation::Bone::BoneMap bm = geom.getSkeleton()->getBoneMap();
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if (!createPalette(pos->size(),bm, geom.getVertexInfluenceSet().getVertexToBoneList()))
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return false;
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int attribIndex = 11;
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int nbAttribs = getNumVertexAttrib();
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// use a global program for all avatar
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if (!program.valid()) {
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program = new osg::Program;
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program->setName("HardwareSkinning");
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if (!_shader.valid())
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_shader = osg::Shader::readShaderFile(osg::Shader::VERTEX,"shaders/skinning.vert");
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if (!_shader.valid()) {
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osg::notify(osg::WARN) << "RigTransformHardware can't load VertexShader" << std::endl;
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return false;
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}
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// replace max matrix by the value from uniform
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{
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std::string str = _shader->getShaderSource();
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std::string toreplace = std::string("MAX_MATRIX");
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std::size_t start = str.find(toreplace);
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std::stringstream ss;
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ss << getMatrixPaletteUniform()->getNumElements();
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str.replace(start, toreplace.size(), ss.str());
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_shader->setShaderSource(str);
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osg::notify(osg::INFO) << "Shader " << str << std::endl;
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}
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program->addShader(_shader.get());
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for (int i = 0; i < nbAttribs; i++)
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{
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std::stringstream ss;
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ss << "boneWeight" << i;
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program->addBindAttribLocation(ss.str(), attribIndex + i);
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osg::notify(osg::INFO) << "set vertex attrib " << ss.str() << std::endl;
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}
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}
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for (int i = 0; i < nbAttribs; i++)
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{
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std::stringstream ss;
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ss << "boneWeight" << i;
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geom.setVertexAttribData(attribIndex + i, osg::Geometry::ArrayData(getVertexAttrib(i),osg::Geometry::BIND_PER_VERTEX));
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}
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osg::ref_ptr<osg::StateSet> ss = new osg::StateSet;
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ss->addUniform(getMatrixPaletteUniform());
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ss->addUniform(new osg::Uniform("nbBonesPerVertex", getNumBonesPerVertex()));
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ss->setAttributeAndModes(program.get());
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geom.setStateSet(ss.get());
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_needInit = false;
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return true;
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}
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};
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struct SetupRigGeometry : public osg::NodeVisitor
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{
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bool _hardware;
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SetupRigGeometry( bool hardware = true) : osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN), _hardware(hardware) {}
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void apply(osg::Geode& geode)
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{
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for (unsigned int i = 0; i < geode.getNumDrawables(); i++)
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apply(*geode.getDrawable(i));
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}
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void apply(osg::Drawable& geom)
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{
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if (_hardware) {
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osgAnimation::RigGeometry* rig = dynamic_cast<osgAnimation::RigGeometry*>(&geom);
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if (rig)
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rig->setRigTransformImplementation(new MyRigTransformHardware);
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}
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if (geom.getName() != std::string("BoundingBox")) // we disable compute of bounding box for all geometry except our bounding box
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geom.setComputeBoundingBoxCallback(new osg::Drawable::ComputeBoundingBoxCallback);
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}
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};
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osg::Group* createCharacterInstance(osg::Group* character, bool hardware)
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{
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osg::ref_ptr<osg::Group> c ;
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if (hardware)
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c = osg::clone(character, osg::CopyOp::DEEP_COPY_ALL & ~osg::CopyOp::DEEP_COPY_PRIMITIVES & ~osg::CopyOp::DEEP_COPY_ARRAYS);
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else
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c = osg::clone(character, osg::CopyOp::DEEP_COPY_ALL);
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osgAnimation::AnimationManagerBase* animationManager = dynamic_cast<osgAnimation::AnimationManagerBase*>(c->getUpdateCallback());
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osgAnimation::BasicAnimationManager* anim = dynamic_cast<osgAnimation::BasicAnimationManager*>(animationManager);
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const osgAnimation::AnimationList& list = animationManager->getAnimationList();
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int v = getRandomValueinRange(list.size());
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if (list[v]->getName() == std::string("MatIpo_ipo")) {
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anim->playAnimation(list[v].get());
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v = (v + 1)%list.size();
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}
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anim->playAnimation(list[v].get());
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SetupRigGeometry switcher(hardware);
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c->accept(switcher);
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return c.release();
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}
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int main (int argc, char* argv[])
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{
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std::cerr << "This example works better with nathan.osg" << std::endl;
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osg::ArgumentParser psr(&argc, argv);
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osgViewer::Viewer viewer(psr);
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bool hardware = true;
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int maxChar = 10;
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while (psr.read("--software")) { hardware = false; }
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while (psr.read("--number", maxChar)) {}
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osg::ref_ptr<osg::Group> root = dynamic_cast<osg::Group*>(osgDB::readNodeFiles(psr));
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if (!root)
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{
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std::cout << psr.getApplicationName() <<": No data loaded" << std::endl;
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return 1;
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}
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{
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osgAnimation::AnimationManagerBase* animationManager = dynamic_cast<osgAnimation::AnimationManagerBase*>(root->getUpdateCallback());
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if(!animationManager)
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{
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osg::notify(osg::FATAL) << "no AnimationManagerBase found, updateCallback need to animate elements" << std::endl;
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return 1;
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}
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}
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osg::ref_ptr<osg::Group> scene = new osg::Group;
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// add the state manipulator
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viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
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// add the thread model handler
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viewer.addEventHandler(new osgViewer::ThreadingHandler);
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// add the window size toggle handler
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viewer.addEventHandler(new osgViewer::WindowSizeHandler);
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// add the stats handler
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viewer.addEventHandler(new osgViewer::StatsHandler);
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// add the help handler
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viewer.addEventHandler(new osgViewer::HelpHandler(psr.getApplicationUsage()));
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// add the LOD Scale handler
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viewer.addEventHandler(new osgViewer::LODScaleHandler);
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// add the screen capture handler
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viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);
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viewer.setSceneData(scene.get());
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viewer.realize();
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int xChar = maxChar;
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int yChar = xChar * 9.0/16;
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for (int i = 0; i < xChar; i++) {
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for (int j = 0; j < yChar; j++) {
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osg::ref_ptr<osg::Group> c = createCharacterInstance(root.get(), hardware);
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osg::MatrixTransform* tr = new osg::MatrixTransform;
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tr->setMatrix(osg::Matrix::translate( 2 * (i - xChar * .5),
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0,
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2 * (j - yChar * .5)));
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tr->addChild(c.get());
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scene->addChild(tr);
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}
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}
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std::cout << "created " << xChar * yChar << " instance" << std::endl;
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return viewer.run();
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}
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