OSG-Collada animation support
Nelsson Huotari
4 years ago
parent
f78a5d795c
commit
6e77ad1f6a
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#include <components/resource/animation.hpp>
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#include <osg/ref_ptr>
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#include <osgAnimation/Channel>
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namespace Resource
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{
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Animation::Animation(const Animation& anim, const osg::CopyOp& copyop): osg::Object(anim, copyop),
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mDuration(0.0f),
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mStartTime(0.0f)
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{
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const osgAnimation::ChannelList& channels = anim.getChannels();
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for (const osg::ref_ptr<osgAnimation::Channel> channel: channels)
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addChannel(channel.get()->clone());
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}
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void Animation::addChannel(osg::ref_ptr<osgAnimation::Channel> pChannel)
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{
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mChannels.push_back(pChannel);
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}
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std::vector<osg::ref_ptr<osgAnimation::Channel>>& Animation::getChannels()
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{
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return mChannels;
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}
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const std::vector<osg::ref_ptr<osgAnimation::Channel>>& Animation::getChannels() const
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{
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return mChannels;
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}
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bool Animation::update (double time)
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{
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for (const osg::ref_ptr<osgAnimation::Channel> channel: mChannels)
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{
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channel->update(time, 1.0f, 0);
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}
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return true;
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}
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}
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#ifndef OPENMW_COMPONENTS_RESOURCE_ANIMATION_HPP
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#define OPENMW_COMPONENTS_RESOURCE_ANIMATION_HPP
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#include <vector>
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#include <osg/Node>
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#include <osg/Object>
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#include <osgAnimation/Channel>
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namespace Resource
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{
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/// Stripped down class of osgAnimation::Animation, only needed for OSG's plugin formats like dae
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class Animation : public osg::Object
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{
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public:
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META_Object(Resource, Animation)
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Animation() :
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mDuration(0.0), mStartTime(0) {}
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Animation(const Animation&, const osg::CopyOp&);
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~Animation() {}
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void addChannel (osg::ref_ptr<osgAnimation::Channel> pChannel);
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std::vector<osg::ref_ptr<osgAnimation::Channel>>& getChannels();
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const std::vector<osg::ref_ptr<osgAnimation::Channel>>& getChannels() const;
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bool update (double time);
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protected:
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double mDuration;
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double mStartTime;
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std::vector<osg::ref_ptr<osgAnimation::Channel>> mChannels;
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};
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}
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#endif
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#include <components/sceneutil/osgacontroller.hpp>
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#include <osg/Geode>
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#include <osg/Node>
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#include <osg/NodeVisitor>
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#include <osg/ref_ptr>
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#include <osg/StateSet>
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#include <osgAnimation/Animation>
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#include <osgAnimation/AnimationUpdateCallback>
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#include <osgAnimation/Channel>
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#include <osgAnimation/BasicAnimationManager>
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#include <osgAnimation/Bone>
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#include <osgAnimation/Sampler>
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#include <osgAnimation/Skeleton>
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#include <osgAnimation/RigGeometry>
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#include <osgAnimation/UpdateMatrixTransform>
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#include <components/debug/debuglog.hpp>
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#include <components/resource/animation.hpp>
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#include <components/sceneutil/controller.hpp>
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#include <components/sceneutil/keyframe.hpp>
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namespace OsgaController
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{
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LinkVisitor::LinkVisitor() : osg::NodeVisitor( TRAVERSE_ALL_CHILDREN )
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{
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mAnimation = nullptr;
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}
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void LinkVisitor::link(osgAnimation::UpdateMatrixTransform* umt)
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{
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const osgAnimation::ChannelList& channels = mAnimation->getChannels();
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for (const osg::ref_ptr<osgAnimation::Channel> channel: channels)
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{
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const std::string& channelName = channel->getName();
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const std::string& channelTargetName = channel->getTargetName();
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if (channelTargetName != umt->getName()) continue;
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// check if we can link a StackedTransformElement to the current Channel
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for (auto stackedTransform : umt->getStackedTransforms())
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{
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osgAnimation::StackedTransformElement* element = stackedTransform.get();
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if (element && !element->getName().empty() && channelName == element->getName())
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{
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osgAnimation::Target* target = element->getOrCreateTarget();
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if (target)
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{
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channel->setTarget(target);
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}
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}
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}
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}
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}
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void LinkVisitor::handle_stateset(osg::StateSet* stateset)
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{
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if (!stateset)
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return;
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const osg::StateSet::AttributeList& attributeList = stateset->getAttributeList();
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for (auto attribute : attributeList)
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{
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osg::StateAttribute* sattr = attribute.second.first.get();
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osgAnimation::UpdateMatrixTransform* umt = dynamic_cast<osgAnimation::UpdateMatrixTransform*>(sattr->getUpdateCallback()); //Can this even be in sa?
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if (umt) link(umt);
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}
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}
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void LinkVisitor::setAnimation(Resource::Animation* animation)
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{
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mAnimation = animation;
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}
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void LinkVisitor::apply(osg::Node& node)
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{
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osg::StateSet* st = node.getStateSet();
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if (st)
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handle_stateset(st);
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osg::Callback* cb = node.getUpdateCallback();
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while (cb)
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{
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osgAnimation::UpdateMatrixTransform* umt = dynamic_cast<osgAnimation::UpdateMatrixTransform*>(cb);
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if (umt)
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if (node.getName() != "root") link(umt);
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cb = cb->getNestedCallback();
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}
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traverse( node );
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}
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void LinkVisitor::apply(osg::Geode& node)
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{
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for (unsigned int i = 0; i < node.getNumDrawables(); i++)
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{
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osg::Drawable* drawable = node.getDrawable(i);
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if (drawable && drawable->getStateSet())
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handle_stateset(drawable->getStateSet());
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}
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apply(static_cast<osg::Node&>(node));
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}
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KeyframeController::KeyframeController(const KeyframeController ©, const osg::CopyOp ©op) : SceneUtil::KeyframeController(copy, copyop)
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{
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mLinker = nullptr;
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}
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osg::Vec3f KeyframeController::getTranslation(float time) const
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{
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osg::Vec3f translationValue;
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std::string animationName;
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float newTime = time;
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//Find the correct animation based on time
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for (auto emulatedAnimation : mEmulatedAnimations)
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{
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if (time > emulatedAnimation.mStartTime && time < emulatedAnimation.mStopTime)
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{
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newTime = time - emulatedAnimation.mStartTime;
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animationName = emulatedAnimation.mName;
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}
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}
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//Find the root transform track in animation
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for (auto mergedAnimationTrack : mMergedAnimationTracks)
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{
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if (mergedAnimationTrack->getName() != animationName) continue;
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const osgAnimation::ChannelList& channels = mergedAnimationTrack->getChannels();
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for (const osg::ref_ptr<osgAnimation::Channel> channel: channels)
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{
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if (channel->getTargetName() != "root" || channel->getName() != "transform") continue;
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if ( osgAnimation::MatrixLinearSampler* templateSampler = dynamic_cast<osgAnimation::MatrixLinearSampler*> (channel->getSampler()) )
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{
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osg::Matrixf matrix;
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templateSampler->getValueAt(newTime, matrix);
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translationValue = matrix.getTrans();
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return osg::Vec3f(translationValue[0], translationValue[1], translationValue[2]);
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}
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}
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}
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return osg::Vec3f();
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}
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void KeyframeController::update(float time, std::string animationName)
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{
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for (auto mergedAnimationTrack : mMergedAnimationTracks)
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{
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if (mergedAnimationTrack->getName() == animationName) mergedAnimationTrack->update(time);
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}
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}
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void KeyframeController::operator() (osg::Node* node, osg::NodeVisitor* nv)
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{
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if (hasInput())
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{
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if (mNeedToLink)
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{
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for (auto mergedAnimationTrack : mMergedAnimationTracks)
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{
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if (!mLinker.valid()) mLinker = new LinkVisitor();
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mLinker->setAnimation(mergedAnimationTrack);
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node->accept(*mLinker);
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}
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mNeedToLink = false;
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}
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float time = getInputValue(nv);
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for (auto emulatedAnimation : mEmulatedAnimations)
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{
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if (time > emulatedAnimation.mStartTime && time < emulatedAnimation.mStopTime)
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{
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update(time - emulatedAnimation.mStartTime, emulatedAnimation.mName);
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}
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}
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}
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traverse(node, nv);
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}
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void KeyframeController::setEmulatedAnimations(std::vector<SceneUtil::EmulatedAnimation> emulatedAnimations)
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{
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mEmulatedAnimations = emulatedAnimations;
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}
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void KeyframeController::addMergedAnimationTrack(osg::ref_ptr<Resource::Animation> animationTrack)
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{
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mMergedAnimationTracks.emplace_back(animationTrack);
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}
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}
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@ -0,0 +1,70 @@
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#ifndef OPENMW_COMPONENTS_SCENEUTIL_OSGACONTROLLER_HPP
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#define OPENMW_COMPONENTS_SCENEUTIL_OSGACONTROLLER_HPP
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#include <osg/Node>
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#include <osg/NodeVisitor>
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#include <osg/StateSet>
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#include <osg/ref_ptr>
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#include <osgAnimation/Animation>
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#include <osgAnimation/AnimationUpdateCallback>
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#include <osgAnimation/Channel>
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#include <osgAnimation/BasicAnimationManager>
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#include <osgAnimation/StackedTransform>
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#include <osgAnimation/UpdateMatrixTransform>
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#include <components/sceneutil/controller.hpp>
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#include <components/sceneutil/keyframe.hpp>
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#include <components/resource/animation.hpp>
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namespace OsgaController
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{
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class LinkVisitor : public osg::NodeVisitor
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{
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public:
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LinkVisitor();
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virtual void link(osgAnimation::UpdateMatrixTransform* umt);
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virtual void handle_stateset(osg::StateSet* stateset);
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virtual void setAnimation(Resource::Animation* animation);
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virtual void apply(osg::Node& node);
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virtual void apply(osg::Geode& node);
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protected:
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Resource::Animation* mAnimation;
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};
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class KeyframeController : public SceneUtil::KeyframeController
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{
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public:
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/// @brief Handles the animation for osgAnimation formats
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KeyframeController() {};
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KeyframeController(const KeyframeController& copy, const osg::CopyOp& copyop);
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META_Object(OsgaController, KeyframeController)
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/// @brief Handles the location of the instance
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osg::Vec3f getTranslation(float time) const override;
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/// @brief Calls animation track update()
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void update(float time, std::string animationName);
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/// @brief Called every frame for osgAnimation
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void operator() (osg::Node*, osg::NodeVisitor*) override;
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/// @brief Sets details of the animations
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void setEmulatedAnimations(std::vector<SceneUtil::EmulatedAnimation> emulatedAnimations);
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/// @brief Adds an animation track to a model
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void addMergedAnimationTrack(osg::ref_ptr<Resource::Animation> animationTrack);
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private:
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bool mNeedToLink = true;
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osg::ref_ptr<LinkVisitor> mLinker;
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};
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}
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#endif
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