mirror of https://github.com/OpenMW/openmw.git
custom class for osgAnimation::RigGeometry, Collada animated deforming body parts
Nelsson Huotari
2 years ago
committed by
psi29a
parent
e5e6645575
commit
334c6dde0b
@ -0,0 +1,281 @@
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#include "riggeometryosgaextension.hpp"
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#include <osgAnimation/RigGeometry>
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#include <osg/Drawable>
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#include <osg/NodeVisitor>
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#include <osg/Version>
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#include <components/debug/debuglog.hpp>
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#include <components/resource/scenemanager.hpp>
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namespace SceneUtil
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{
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OsgaRigGeometry::OsgaRigGeometry() : osgAnimation::RigGeometry()
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{
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setDataVariance(osg::Object::STATIC);
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}
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OsgaRigGeometry::OsgaRigGeometry(const osgAnimation::RigGeometry& copy, const osg::CopyOp& copyop) : osgAnimation::RigGeometry(copy, copyop)
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{
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setDataVariance(osg::Object::STATIC);
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}
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OsgaRigGeometry::OsgaRigGeometry(const OsgaRigGeometry& copy, const osg::CopyOp& copyop) :
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osgAnimation::RigGeometry(copy, copyop)
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{
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setDataVariance(osg::Object::STATIC);
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}
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void OsgaRigGeometry::computeMatrixFromRootSkeleton(osg::MatrixList mtxList)
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{
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if (!_root.valid())
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{
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Log(Debug::Warning) << "Warning " << className() <<"::computeMatrixFromRootSkeleton if you have this message it means you miss to call buildTransformer(Skeleton* root), or your RigGeometry (" << getName() <<") is not attached to a Skeleton subgraph";
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return;
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}
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osg::Matrix notRoot = _root->getMatrix();
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_matrixFromSkeletonToGeometry = mtxList[0] * osg::Matrix::inverse(notRoot);
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_invMatrixFromSkeletonToGeometry = osg::Matrix::inverse(_matrixFromSkeletonToGeometry);
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_needToComputeMatrix = false;
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}
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RigGeometryHolder::RigGeometryHolder() :
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mBackToOrigin(nullptr),
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mLastFrameNumber(0),
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mIsBodyPart(false)
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{
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}
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RigGeometryHolder::RigGeometryHolder(const RigGeometryHolder& copy, const osg::CopyOp& copyop) :
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Drawable(copy, copyop),
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mBackToOrigin(copy.mBackToOrigin),
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mLastFrameNumber(0),
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mIsBodyPart(copy.mIsBodyPart)
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{
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setUseVertexBufferObjects(true);
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if (!copy.getSourceRigGeometry())
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{
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Log(Debug::Error) << "copy constructor of RigGeometryHolder partially failed (no source RigGeometry)";
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return;
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}
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osg::ref_ptr<OsgaRigGeometry> rigGeometry = new OsgaRigGeometry(*copy.getSourceRigGeometry(), copyop);
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setSourceRigGeometry(rigGeometry);
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}
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RigGeometryHolder::RigGeometryHolder(const osgAnimation::RigGeometry& copy, const osg::CopyOp& copyop) :
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mBackToOrigin(nullptr),
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mLastFrameNumber(0),
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mIsBodyPart(false)
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{
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setUseVertexBufferObjects(true);
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osg::ref_ptr<OsgaRigGeometry> rigGeometry = new OsgaRigGeometry(copy, copyop);
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setSourceRigGeometry(rigGeometry);
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}
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void RigGeometryHolder::setSourceRigGeometry(osg::ref_ptr<OsgaRigGeometry> sourceRigGeometry)
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{
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for (unsigned int i=0; i<2; ++i)
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mGeometry.at(i) = nullptr;
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mSourceRigGeometry = sourceRigGeometry;
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_boundingBox = mSourceRigGeometry->getComputeBoundingBoxCallback()->computeBound(*mSourceRigGeometry);
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_boundingSphere = osg::BoundingSphere(_boundingBox);
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for (unsigned int i=0; i<2; ++i)
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{
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const OsgaRigGeometry& from = *sourceRigGeometry;
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// DO NOT COPY AND PASTE THIS CODE. Cloning osg::Geometry without also cloning its contained Arrays is generally unsafe.
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// In this specific case the operation is safe under the following two assumptions:
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// - When Arrays are removed or replaced in the cloned geometry, the original Arrays in their place must outlive the cloned geometry regardless. (ensured by mSourceRigGeometry, possibly also RigGeometry._geometry)
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// - Arrays that we add or replace in the cloned geometry must be explicitely forbidden from reusing BufferObjects of the original geometry.
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mGeometry.at(i) = new OsgaRigGeometry(from, osg::CopyOp::SHALLOW_COPY);
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mGeometry.at(i)->getOrCreateUserDataContainer()->addUserObject(new Resource::TemplateRef(mSourceRigGeometry));
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OsgaRigGeometry& to = *mGeometry.at(i);
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to.setSupportsDisplayList(false);
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to.setUseVertexBufferObjects(true);
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to.setCullingActive(false); // make sure to disable culling since that's handled by this class
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to.setDataVariance(osg::Object::STATIC);
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to.setNeedToComputeMatrix(true);
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// vertices and normals are modified every frame, so we need to deep copy them.
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// assign a dedicated VBO to make sure that modifications don't interfere with source geometry's VBO.
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osg::ref_ptr<osg::VertexBufferObject> vbo (new osg::VertexBufferObject);
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vbo->setUsage(GL_DYNAMIC_DRAW_ARB);
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osg::ref_ptr<osg::Array> vertexArray = static_cast<osg::Array*>(from.getVertexArray()->clone(osg::CopyOp::DEEP_COPY_ALL));
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if (vertexArray)
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{
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vertexArray->setVertexBufferObject(vbo);
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to.setVertexArray(vertexArray);
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}
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if (const osg::Array* normals = from.getNormalArray())
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{
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osg::ref_ptr<osg::Array> normalArray = static_cast<osg::Array*>(normals->clone(osg::CopyOp::DEEP_COPY_ALL));
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if (normalArray)
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{
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normalArray->setVertexBufferObject(vbo);
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to.setNormalArray(normalArray, osg::Array::BIND_PER_VERTEX);
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}
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}
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if (const osg::Vec4Array* tangents = dynamic_cast<const osg::Vec4Array*>(from.getTexCoordArray(7)))
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{
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osg::ref_ptr<osg::Array> tangentArray = static_cast<osg::Array*>(tangents->clone(osg::CopyOp::DEEP_COPY_ALL));
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tangentArray->setVertexBufferObject(vbo);
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to.setTexCoordArray(7, tangentArray, osg::Array::BIND_PER_VERTEX);
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}
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}
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}
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osg::ref_ptr<OsgaRigGeometry> RigGeometryHolder::getSourceRigGeometry() const
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{
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return mSourceRigGeometry;
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}
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void RigGeometryHolder::updateRigGeometry(OsgaRigGeometry* geom, osg::NodeVisitor *nv)
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{
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if(!geom)
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return;
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if(!geom->getSkeleton() && !this->getParents().empty())
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{
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osgAnimation::RigGeometry::FindNearestParentSkeleton finder;
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if(this->getParents().size() > 1)
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Log(Debug::Warning) << "A RigGeometry should not have multi parent ( " << geom->getName() << " )";
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this->getParents()[0]->accept(finder);
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if(!finder._root.valid())
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{
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Log(Debug::Warning) << "A RigGeometry did not find a parent skeleton for RigGeometry ( " << geom->getName() << " )";
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return;
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}
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geom->getRigTransformImplementation()->prepareData(*geom);
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geom->setSkeleton(finder._root.get());
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}
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if(!geom->getSkeleton())
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return;
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if(geom->getNeedToComputeMatrix())
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{
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osgAnimation::Skeleton* root = geom->getSkeleton();
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if (!root)
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{
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Log(Debug::Warning) << "Warning: if you have this message it means you miss to call buildTransformer(Skeleton* root), or your RigGeometry is not attached to a Skeleton subgraph";
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return;
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}
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osg::MatrixList mtxList = root->getWorldMatrices(root); //We always assume that RigGeometries have origin at their root
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geom->computeMatrixFromRootSkeleton(mtxList);
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if (mIsBodyPart && mBackToOrigin) updateBackToOriginTransform(geom);
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}
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if(geom->getSourceGeometry())
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{
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osg::Drawable::UpdateCallback * up = dynamic_cast<osg::Drawable::UpdateCallback*>(geom->getSourceGeometry()->getUpdateCallback());
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if(up)
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{
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up->update(nv, geom->getSourceGeometry());
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}
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}
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geom->update();
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}
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OsgaRigGeometry* RigGeometryHolder::getGeometry(int geometry)
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{
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return mGeometry.at(geometry).get();
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}
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void RigGeometryHolder::updateBackToOriginTransform(OsgaRigGeometry* geometry)
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{
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osgAnimation::Skeleton* skeleton = geometry->getSkeleton();
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if (skeleton)
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{
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osg::MatrixList mtxList = mBackToOrigin->getParents()[0]->getWorldMatrices(skeleton);
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osg::Matrix skeletonMatrix = skeleton->getMatrix();
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osg::Matrixf matrixFromSkeletonToGeometry = mtxList[0] * osg::Matrix::inverse(skeletonMatrix);
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osg::Matrixf invMatrixFromSkeletonToGeometry = osg::Matrix::inverse(matrixFromSkeletonToGeometry);
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mBackToOrigin->setMatrix(invMatrixFromSkeletonToGeometry);
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}
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}
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void RigGeometryHolder::accept(osg::NodeVisitor &nv)
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{
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if (!nv.validNodeMask(*this))
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return;
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nv.pushOntoNodePath(this);
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if (nv.getVisitorType() == osg::NodeVisitor::CULL_VISITOR && mSourceRigGeometry.get())
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{
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unsigned int traversalNumber = nv.getTraversalNumber();
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if (mLastFrameNumber == traversalNumber)
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{
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OsgaRigGeometry& geom = *getRigGeometryPerFrame(mLastFrameNumber);
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nv.pushOntoNodePath(&geom);
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nv.apply(geom);
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nv.popFromNodePath();
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}
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else
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{
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mLastFrameNumber = traversalNumber;
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OsgaRigGeometry& geom = *getRigGeometryPerFrame(mLastFrameNumber);
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if (mIsBodyPart)
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{
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if (mBackToOrigin) updateBackToOriginTransform(&geom);
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else
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{
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osg::MatrixTransform* matrixTransform = dynamic_cast<osg::MatrixTransform*> (this->getParents()[0]);
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if (matrixTransform)
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{
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mBackToOrigin = matrixTransform;
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updateBackToOriginTransform(&geom);
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}
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}
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}
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updateRigGeometry(&geom, &nv);
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nv.pushOntoNodePath(&geom);
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nv.apply(geom);
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nv.popFromNodePath();
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}
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}
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else if (nv.getVisitorType() == osg::NodeVisitor::UPDATE_VISITOR)
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{
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}
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else
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nv.apply(*this);
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nv.popFromNodePath();
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}
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void RigGeometryHolder::accept(osg::PrimitiveFunctor& func) const
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{
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getRigGeometryPerFrame(mLastFrameNumber)->accept(func);
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}
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OsgaRigGeometry* RigGeometryHolder::getRigGeometryPerFrame(unsigned int frame) const
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{
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return mGeometry.at(frame%2).get();
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}
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}
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@ -0,0 +1,72 @@
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#ifndef OPENMW_COMPONENTS_OSGAEXTENSION_RIGGEOMETRY_H
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#define OPENMW_COMPONENTS_OSGAEXTENSION_RIGGEOMETRY_H
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#include <array>
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#include <osg/Drawable>
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#include <osgAnimation/RigGeometry>
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#include <osg/NodeVisitor>
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namespace SceneUtil
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{
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/// @brief Custom RigGeometry-class for osgAnimation-formats (collada)
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class OsgaRigGeometry : public osgAnimation::RigGeometry
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{
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public:
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OsgaRigGeometry();
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OsgaRigGeometry(const osgAnimation::RigGeometry& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
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OsgaRigGeometry(const OsgaRigGeometry& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
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META_Object(SceneUtil, OsgaRigGeometry);
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void computeMatrixFromRootSkeleton(osg::MatrixList mtxList);
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};
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/// @brief OpenMW-compatible double buffered static datavariance version of osgAnimation::RigGeometry
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/// This class is based on osgAnimation::RigGeometry and SceneUtil::RigGeometry
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class RigGeometryHolder : public osg::Drawable
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{
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public:
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RigGeometryHolder();
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RigGeometryHolder(const RigGeometryHolder& copy, const osg::CopyOp& copyop);
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RigGeometryHolder(const osgAnimation::RigGeometry& copy, const osg::CopyOp& copyop);
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META_Object(SceneUtil, RigGeometryHolder);
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void setSourceRigGeometry(osg::ref_ptr<OsgaRigGeometry> sourceRigGeometry);
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osg::ref_ptr<OsgaRigGeometry> getSourceRigGeometry() const;
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/// @brief Modified rig update, code based on osgAnimation::UpdateRigGeometry : public osg::Drawable::UpdateCallback
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void updateRigGeometry(OsgaRigGeometry* geom, osg::NodeVisitor *nv);
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OsgaRigGeometry* getGeometry(int geometry);
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void accept(osg::NodeVisitor &nv) override;
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void accept(osg::PrimitiveFunctor&) const override;
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bool supports(const osg::PrimitiveFunctor&) const override{ return true; }
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void setBackToOrigin(osg::MatrixTransform* backToOrigin) {mBackToOrigin = backToOrigin;}
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void setBodyPart(bool isBodyPart) {mIsBodyPart = isBodyPart;}
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private:
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std::array<osg::ref_ptr<OsgaRigGeometry>, 2> mGeometry;
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osg::ref_ptr<OsgaRigGeometry> mSourceRigGeometry;
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osg::MatrixTransform* mBackToOrigin; //This is used to move riggeometries from their slot locations to skeleton origin in order to get correct deformations for bodyparts
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unsigned int mLastFrameNumber;
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bool mIsBodyPart;
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void updateBackToOriginTransform(OsgaRigGeometry* geometry);
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OsgaRigGeometry* getRigGeometryPerFrame(unsigned int frame) const;
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};
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}
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#endif
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