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124 lines
4.5 KiB
C++
124 lines
4.5 KiB
C++
#ifndef OPENMW_COMPONENTS_NIFOSG_RIGGEOMETRY_H
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#define OPENMW_COMPONENTS_NIFOSG_RIGGEOMETRY_H
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#include <osg/Geometry>
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#include <osg/Matrixf>
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namespace SceneUtil
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{
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class Skeleton;
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class Bone;
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// TODO: This class has a lot of issues.
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// - We require too many workarounds to ensure safety.
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// - mSourceGeometry should be const, but can not be const because of a use case in shadervisitor.cpp.
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// - We create useless mGeometry clones in template RigGeometries.
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// - We do not support compileGLObjects.
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// - We duplicate some code in MorphGeometry.
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/// @brief Mesh skinning implementation.
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/// @note A RigGeometry may be attached directly to a Skeleton, or somewhere below a Skeleton.
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/// Note though that the RigGeometry ignores any transforms below the Skeleton, so the attachment point is not that
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/// important.
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/// @note The internal Geometry used for rendering is double buffered, this allows updates to be done in a thread
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/// safe way while not compromising rendering performance. This is crucial when using osg's default threading model
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/// of DrawThreadPerContext.
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class RigGeometry : public osg::Drawable
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{
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public:
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RigGeometry();
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RigGeometry(const RigGeometry& copy, const osg::CopyOp& copyop);
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META_Object(SceneUtil, RigGeometry)
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// Currently empty as this is difficult to implement. Technically we would need to compile both internal
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// geometries in separate frames but this method is only called once. Alternatively we could compile just the
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// static parts of the model.
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void compileGLObjects(osg::RenderInfo& renderInfo) const override {}
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struct BoneInfluence
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{
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osg::Matrixf mInvBindMatrix;
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osg::BoundingSpheref mBoundSphere;
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// <vertex index, weight>
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std::vector<std::pair<unsigned short, float>> mWeights;
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};
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struct InfluenceMap : public osg::Referenced
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{
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std::vector<std::pair<std::string, BoneInfluence>> mData;
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};
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void setInfluenceMap(osg::ref_ptr<InfluenceMap> influenceMap);
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/// Initialize this geometry from the source geometry.
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/// @note The source geometry will not be modified.
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void setSourceGeometry(osg::ref_ptr<osg::Geometry> sourceGeom);
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osg::ref_ptr<osg::Geometry> getSourceGeometry() const;
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void accept(osg::NodeVisitor& nv) override;
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bool supports(const osg::PrimitiveFunctor&) const override { return true; }
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void accept(osg::PrimitiveFunctor&) const override;
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struct CopyBoundingBoxCallback : osg::Drawable::ComputeBoundingBoxCallback
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{
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osg::BoundingBox boundingBox;
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osg::BoundingBox computeBound(const osg::Drawable&) const override { return boundingBox; }
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};
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struct CopyBoundingSphereCallback : osg::Node::ComputeBoundingSphereCallback
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{
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osg::BoundingSphere boundingSphere;
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osg::BoundingSphere computeBound(const osg::Node&) const override { return boundingSphere; }
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};
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private:
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void cull(osg::NodeVisitor* nv);
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void updateBounds(osg::NodeVisitor* nv);
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osg::ref_ptr<osg::Geometry> mGeometry[2];
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osg::Geometry* getGeometry(unsigned int frame) const;
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osg::ref_ptr<osg::Geometry> mSourceGeometry;
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osg::ref_ptr<const osg::Vec4Array> mSourceTangents;
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Skeleton* mSkeleton;
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osg::ref_ptr<osg::RefMatrix> mGeomToSkelMatrix;
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osg::ref_ptr<InfluenceMap> mInfluenceMap;
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typedef std::pair<std::string, osg::Matrixf> BoneBindMatrixPair;
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typedef std::pair<BoneBindMatrixPair, float> BoneWeight;
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typedef std::vector<unsigned short> VertexList;
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typedef std::map<std::vector<BoneWeight>, VertexList> Bone2VertexMap;
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struct Bone2VertexVector : public osg::Referenced
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{
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std::vector<std::pair<std::vector<BoneWeight>, VertexList>> mData;
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};
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osg::ref_ptr<Bone2VertexVector> mBone2VertexVector;
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struct BoneSphereVector : public osg::Referenced
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{
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std::vector<std::pair<std::string, osg::BoundingSpheref>> mData;
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};
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osg::ref_ptr<BoneSphereVector> mBoneSphereVector;
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std::vector<Bone*> mBoneNodesVector;
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unsigned int mLastFrameNumber;
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bool mBoundsFirstFrame;
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bool initFromParentSkeleton(osg::NodeVisitor* nv);
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void updateGeomToSkelMatrix(const osg::NodePath& nodePath);
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};
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}
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#endif
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