#include <osgViewer/Viewer>
#include <osg/Node>
#include <osg/Geometry>
#include <osg/Geode>
#include <osg/Group>
#include <osg/AutoTransform>
#include <osg/ProxyNode>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <osgText/Text>
#include <osgUtil/Optimizer>
#include<osg/Camera>
#include<osgViewer/Viewer>
#include <osgManipulator/Dragger>
#include <osgManipulator/Selection>
#include <osgManipulator/Constraint>
#include <osgManipulator/TranslateAxisDragger>
#include <osgManipulator/CommandManager>
#include<osgFX/Scribe>
#include<osg/MatrixTransform>
#include<osgAnimation/Animation>
#include<osgAnimation/Bone>
#include<osgAnimation/Skeleton>
#include<osgAnimation/UpdateMatrixTransform>
#include<osgAnimation/BasicAnimationManager>
#include<osgAnimation/MorphGeometry>
#include<osgUtil/SmoothingVisitor>
#include <iostream>
#include <thread>
#include <future>
#include <string>
#include<map>
#include<vector>
#include<list>
using std::vector;
using std::string;
using std::list;
using namespace std;
osg::Geometry* createSourceGeometry()
{
osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
vertices->push_back(osg::Vec3(0.0, 5.0, -2.5));
vertices->push_back(osg::Vec3(0.0, 0.0, -2.5));
vertices->push_back(osg::Vec3(2.5, 5.0, 0.0));
vertices->push_back(osg::Vec3(2.5, 0.0, 0.0));
vertices->push_back(osg::Vec3(5.0, 5.0, -2.5));
vertices->push_back(osg::Vec3(5.0, 0.0, -2.5));
osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
geom->setVertexArray(vertices.get());
geom->addPrimitiveSet(new osg::DrawArrays(GL_QUAD_STRIP, 0, 6));
osgUtil::SmoothingVisitor smv;
smv.smooth(*geom);
return geom.release();
}
osg::Geometry* createTargetGeometry()
{
osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
vertices->push_back(osg::Vec3(0.0, 5.0, 1.0));
vertices->push_back(osg::Vec3(0.0, 0.0, 1.0));
vertices->push_back(osg::Vec3(2.5, 5.0, -1.0));
vertices->push_back(osg::Vec3(2.5, 0.0, -1.0));
vertices->push_back(osg::Vec3(5.0, 5.0, 1.0));
vertices->push_back(osg::Vec3(5.0, 0.0, 1.0));
osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
geom->setVertexArray(vertices.get());
geom->addPrimitiveSet(new osg::DrawArrays(GL_QUAD_STRIP, 0, 6));
osgUtil::SmoothingVisitor smv;
smv.smooth(*geom);
return geom.release();
}
void createMorphKeyframes(osgAnimation::FloatKeyframeContainer* ks)
{
ks->push_back(osgAnimation::FloatKeyframe(0.0, 0.0));
ks->push_back(osgAnimation::FloatKeyframe(2.0, 1.0));
}
int main()
{
osg::ref_ptr<osgAnimation::FloatLinearChannel> channel = new osgAnimation::FloatLinearChannel;
channel->setName("0");
channel->setTargetName("MorphCallback");
createMorphKeyframes(channel->getOrCreateSampler()->getOrCreateKeyframeContainer());
osg::ref_ptr<osgAnimation::Animation> anim = new osgAnimation::Animation;
anim->setPlaymode(osgAnimation::Animation::PPONG)
anim->addChannel(channel.get());
osg::ref_ptr<osgAnimation::BasicAnimationManager> manager = new osgAnimation::BasicAnimationManager;
manager->registerAnimation(anim.get());
osg::ref_ptr<osgAnimation::MorphGeometry> morph = new osgAnimation::MorphGeometry(*createSourceGeometry());
morph->addMorphTarget(createTargetGeometry());
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
geode->addDrawable(morph.get());
geode->setUpdateCallback(new osgAnimation::UpdateMorph("MorphCallback"));
osg::ref_ptr<osg::Group> root = new osg::Group;
root->addChild(geode.get());
root->setUpdateCallback(manager.get());
manager->playAnimation(anim.get());
osgViewer::Viewer viewer;
viewer.setSceneData(root.get());
return viewer.run();
}
9.3.4 变形体动画之对折硬纸
于 2021-03-28 11:12:37 首次发布