163 lines
5.3 KiB
C++
163 lines
5.3 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file transformBlendTable.h
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* @author drose
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* @date 2005-03-24
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*/
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#ifndef TRANSFORMBLENDTABLE_H
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#define TRANSFORMBLENDTABLE_H
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#include "pandabase.h"
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#include "transformBlend.h"
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#include "vertexTransform.h"
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#include "copyOnWriteObject.h"
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#include "pointerTo.h"
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#include "pvector.h"
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#include "pmap.h"
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#include "indirectLess.h"
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#include "cycleData.h"
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#include "cycleDataLockedReader.h"
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#include "cycleDataReader.h"
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#include "cycleDataWriter.h"
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#include "pipelineCycler.h"
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#include "sparseArray.h"
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class FactoryParams;
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/**
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* This structure collects together the different combinations of transforms
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* and blend amounts used by a GeomVertexData, to facilitate computing dynamic
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* vertices on the CPU at runtime. Each vertex has a pointer to exactly one
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* of the entries in this table, and each entry defines a number of
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* transform/blend combinations.
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*
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* This structure is used for a GeomVertexData set up to compute its dynamic
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* vertices on the CPU. See TransformTable for one set up to compute its
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* dynamic vertices on the graphics card.
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*/
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class EXPCL_PANDA_GOBJ TransformBlendTable : public CopyOnWriteObject {
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protected:
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virtual PT(CopyOnWriteObject) make_cow_copy();
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PUBLISHED:
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TransformBlendTable();
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TransformBlendTable(const TransformBlendTable ©);
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void operator = (const TransformBlendTable ©);
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virtual ~TransformBlendTable();
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INLINE size_t get_num_blends() const;
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INLINE const TransformBlend &get_blend(size_t n) const;
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MAKE_SEQ(get_blends, get_num_blends, get_blend);
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INLINE UpdateSeq get_modified(Thread *current_thread = Thread::get_current_thread()) const;
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void set_blend(size_t n, const TransformBlend &blend);
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void remove_blend(size_t n);
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size_t add_blend(const TransformBlend &blend);
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INLINE int get_num_transforms() const;
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INLINE int get_max_simultaneous_transforms() const;
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INLINE void set_rows(const SparseArray &rows);
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INLINE const SparseArray &get_rows() const;
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INLINE SparseArray &modify_rows();
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void write(std::ostream &out, int indent_level) const;
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MAKE_SEQ_PROPERTY(blends, get_num_blends, get_blend, set_blend, remove_blend);
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MAKE_PROPERTY(modified, get_modified);
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MAKE_PROPERTY(num_transforms, get_num_transforms);
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MAKE_PROPERTY(max_simultaneous_transforms, get_max_simultaneous_transforms);
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MAKE_PROPERTY(rows, get_rows, set_rows);
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private:
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class CData;
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void clear_index();
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INLINE void consider_rebuild_index() const;
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void rebuild_index();
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void recompute_modified(CData *cdata, Thread *current_thread);
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void clear_modified(Thread *current_thread);
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private:
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// We don't bother with registering the table, or protecting its data in a
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// CycleData structure--the interface on GeomVertexData guarantees that the
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// pointer will be copied if we modify the table.
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typedef pvector<TransformBlend> Blends;
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Blends _blends;
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SparseArray _rows;
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// This map indexes directly into the above vector. That means any time we
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// add or remove anything from the vector, we must completely rebuild the
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// index (since the vector might reallocate, invalidating all the pointers
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// into it).
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typedef pmap<const TransformBlend *, int, IndirectLess<TransformBlend> > BlendIndex;
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BlendIndex _blend_index;
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int _num_transforms;
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int _max_simultaneous_transforms;
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// Even though we don't store the actual blend table data in a CycleData
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// structure, we do need to keep a local cache of the relevant modified
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// stamps there, so it can be updated per-thread.
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class EXPCL_PANDA_GOBJ CData : public CycleData {
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public:
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INLINE CData();
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INLINE CData(const CData ©);
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virtual CycleData *make_copy() const;
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virtual void write_datagram(BamWriter *manager, Datagram &dg) const;
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virtual void fillin(DatagramIterator &scan, BamReader *manager);
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virtual TypeHandle get_parent_type() const {
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return TransformBlendTable::get_class_type();
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}
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UpdateSeq _modified;
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UpdateSeq _global_modified;
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};
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PipelineCycler<CData> _cycler;
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typedef CycleDataLockedReader<CData> CDLockedReader;
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typedef CycleDataReader<CData> CDReader;
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typedef CycleDataWriter<CData> CDWriter;
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &dg);
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virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
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protected:
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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void fillin(DatagramIterator &scan, BamReader *manager);
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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CopyOnWriteObject::init_type();
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register_type(_type_handle, "TransformBlendTable",
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CopyOnWriteObject::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class VertexTransform;
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};
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INLINE std::ostream &operator << (std::ostream &out, const TransformBlendTable &obj);
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#include "transformBlendTable.I"
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#endif
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