mirror of
https://github.com/OpenMW/openmw.git
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115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
#include "attach.hpp"
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#include <stdexcept>
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#include <osg/NodeVisitor>
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#include <osg/Group>
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#include <osg/Geode>
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#include <osg/FrontFace>
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#include <osg/PositionAttitudeTransform>
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#include <osg/MatrixTransform>
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#include <components/misc/stringops.hpp>
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#include <components/sceneutil/skeleton.hpp>
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#include "visitor.hpp"
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namespace SceneUtil
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{
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class CopyRigVisitor : public osg::NodeVisitor
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{
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public:
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CopyRigVisitor(osg::ref_ptr<osg::Group> parent, const std::string& filter)
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: osg::NodeVisitor(TRAVERSE_ALL_CHILDREN)
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, mParent(parent)
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, mFilter(Misc::StringUtils::lowerCase(filter))
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{
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mFilter2 = "tri " + mFilter;
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}
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virtual void apply(osg::Node& node)
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{
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std::string lowerName = Misc::StringUtils::lowerCase(node.getName());
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if ((lowerName.size() >= mFilter.size() && lowerName.compare(0, mFilter.size(), mFilter) == 0)
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|| (lowerName.size() >= mFilter2.size() && lowerName.compare(0, mFilter2.size(), mFilter2) == 0))
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{
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mParent->addChild(&node);
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}
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else
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traverse(node);
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}
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private:
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osg::ref_ptr<osg::Group> mParent;
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std::string mFilter;
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std::string mFilter2;
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};
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osg::ref_ptr<osg::Node> attach(osg::ref_ptr<osg::Node> toAttach, osg::Node *master, const std::string &filter, const std::string &attachNode)
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{
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if (dynamic_cast<SceneUtil::Skeleton*>(toAttach.get()))
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{
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osg::ref_ptr<osg::Group> handle = new osg::Group;
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CopyRigVisitor copyVisitor(handle, filter);
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toAttach->accept(copyVisitor);
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master->asGroup()->addChild(handle);
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return handle;
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}
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else
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{
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FindByNameVisitor find(attachNode);
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master->accept(find);
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if (!find.mFoundNode)
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throw std::runtime_error(std::string("Can't find attachment node ") + attachNode);
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FindByNameVisitor findBoneOffset("BoneOffset");
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toAttach->accept(findBoneOffset);
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osg::ref_ptr<osg::PositionAttitudeTransform> trans;
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if (findBoneOffset.mFoundNode)
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{
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osg::MatrixTransform* boneOffset = dynamic_cast<osg::MatrixTransform*>(findBoneOffset.mFoundNode);
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if (!boneOffset)
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throw std::runtime_error("BoneOffset must be a MatrixTransform");
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trans = new osg::PositionAttitudeTransform;
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trans->setPosition(boneOffset->getMatrix().getTrans());
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// The BoneOffset rotation seems to be incorrect
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trans->setAttitude(osg::Quat(osg::DegreesToRadians(-90.f), osg::Vec3f(1,0,0)));
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}
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if (attachNode.find("Left") != std::string::npos)
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{
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if (!trans)
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trans = new osg::PositionAttitudeTransform;
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trans->setScale(osg::Vec3f(-1.f, 1.f, 1.f));
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// Need to invert culling because of the negative scale
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// Note: for absolute correctness we would need to check the current front face for every mesh then invert it
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// However MW isn't doing this either, so don't. Assuming all meshes are using backface culling is more efficient.
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osg::FrontFace* frontFace = new osg::FrontFace;
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frontFace->setMode(osg::FrontFace::CLOCKWISE);
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trans->getOrCreateStateSet()->setAttributeAndModes(frontFace, osg::StateAttribute::ON);
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}
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if (trans)
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{
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find.mFoundNode->addChild(trans);
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trans->addChild(toAttach);
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return trans;
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}
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else
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{
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find.mFoundNode->addChild(toAttach);
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return toAttach;
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}
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}
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}
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}
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