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95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
#ifndef OPENMW_COMPONENTS_MORPHGEOMETRY_H
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#define OPENMW_COMPONENTS_MORPHGEOMETRY_H
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#include <osg/Geometry>
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namespace SceneUtil
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{
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/// @brief Vertex morphing implementation.
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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 MorphGeometry : public osg::Drawable
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{
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public:
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MorphGeometry();
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MorphGeometry(const MorphGeometry& copy, const osg::CopyOp& copyop);
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META_Object(SceneUtil, MorphGeometry)
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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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// 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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class MorphTarget
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{
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protected:
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osg::ref_ptr<osg::Vec3Array> mOffsets;
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float mWeight;
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public:
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MorphTarget(osg::Vec3Array* offsets, float w = 1.0)
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: mOffsets(offsets)
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, mWeight(w)
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{
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}
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void setWeight(float weight) { mWeight = weight; }
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float getWeight() const { return mWeight; }
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osg::Vec3Array* getOffsets() { return mOffsets.get(); }
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const osg::Vec3Array* getOffsets() const { return mOffsets.get(); }
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void setOffsets(osg::Vec3Array* offsets) { mOffsets = offsets; }
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};
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typedef std::vector<MorphTarget> MorphTargetList;
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virtual void addMorphTarget(osg::Vec3Array* offsets, float weight = 1.0);
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/** Set the MorphGeometry dirty.*/
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void dirty();
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/** Get the list of MorphTargets.*/
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const MorphTargetList& getMorphTargetList() const { return mMorphTargets; }
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/** Get the list of MorphTargets. Warning if you modify this array you will have to call dirty() */
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MorphTargetList& getMorphTargetList() { return mMorphTargets; }
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/** Return the \c MorphTarget at position \c i.*/
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inline const MorphTarget& getMorphTarget(unsigned int i) const { return mMorphTargets[i]; }
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/** Return the \c MorphTarget at position \c i.*/
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inline MorphTarget& getMorphTarget(unsigned int i) { return mMorphTargets[i]; }
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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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osg::BoundingBox computeBoundingBox() const override;
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private:
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void cull(osg::NodeVisitor* nv);
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MorphTargetList mMorphTargets;
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osg::ref_ptr<osg::Geometry> mSourceGeometry;
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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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unsigned int mLastFrameNumber;
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bool mDirty; // Have any morph targets changed?
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mutable bool mMorphedBoundingBox;
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};
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}
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#endif
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