249 lines
8.0 KiB
C++
249 lines
8.0 KiB
C++
// Filename: geom.h
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// Created by: drose (06Mar05)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef GEOM_H
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#define GEOM_H
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#include "pandabase.h"
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#include "typedWritableReferenceCount.h"
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#include "boundedObject.h"
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#include "cycleData.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 "geomVertexData.h"
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#include "geomPrimitive.h"
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#include "geomMunger.h"
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#include "geomEnums.h"
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#include "geomCacheEntry.h"
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#include "textureStage.h"
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#include "updateSeq.h"
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#include "pointerTo.h"
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#include "indirectLess.h"
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#include "pset.h"
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class GeomContext;
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class PreparedGraphicsObjects;
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////////////////////////////////////////////////////////////////////
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// Class : Geom
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// Description : A container for geometry primitives. This class
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// associates one or more GeomPrimitive objects with a
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// table of vertices defined by a GeomVertexData object.
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// All of the primitives stored in a particular Geom are
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// drawn from the same set of vertices (each primitive
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// uses a subset of all of the vertices in the table),
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// and all of them must be rendered at the same time, in
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// the same graphics state.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA Geom : public TypedWritableReferenceCount, public BoundedObject, public GeomEnums {
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PUBLISHED:
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Geom(const GeomVertexData *data);
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protected:
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Geom(const Geom ©);
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PUBLISHED:
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void operator = (const Geom ©);
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virtual ~Geom();
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virtual Geom *make_copy() const;
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INLINE PrimitiveType get_primitive_type() const;
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INLINE ShadeModel get_shade_model() const;
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INLINE int get_geom_rendering() const;
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INLINE UsageHint get_usage_hint() const;
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void set_usage_hint(UsageHint usage_hint);
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INLINE CPT(GeomVertexData) get_vertex_data() const;
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PT(GeomVertexData) modify_vertex_data();
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void set_vertex_data(const GeomVertexData *data);
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void offset_vertices(const GeomVertexData *data, int offset);
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int make_nonindexed(bool composite_only);
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INLINE int get_num_primitives() const;
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INLINE const GeomPrimitive *get_primitive(int i) const;
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INLINE GeomPrimitive *modify_primitive(int i);
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void set_primitive(int i, const GeomPrimitive *primitive);
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void add_primitive(const GeomPrimitive *primitive);
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void remove_primitive(int i);
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void clear_primitives();
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INLINE PT(Geom) decompose() const;
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INLINE PT(Geom) rotate() const;
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INLINE PT(Geom) unify() const;
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void decompose_in_place();
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void rotate_in_place();
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void unify_in_place();
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virtual bool copy_primitives_from(const Geom *other);
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int get_num_bytes() const;
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INLINE UpdateSeq get_modified() const;
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void transform_vertices(const LMatrix4f &mat);
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bool check_valid() const;
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bool check_valid(const GeomVertexData *vertex_data) const;
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virtual void output(ostream &out) const;
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virtual void write(ostream &out, int indent_level = 0) const;
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void clear_cache();
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void prepare(PreparedGraphicsObjects *prepared_objects);
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bool release(PreparedGraphicsObjects *prepared_objects);
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int release_all();
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public:
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GeomContext *prepare_now(PreparedGraphicsObjects *prepared_objects,
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GraphicsStateGuardianBase *gsg);
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void draw(GraphicsStateGuardianBase *gsg,
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const GeomMunger *munger,
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const GeomVertexData *vertex_data) const;
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void calc_tight_bounds(LPoint3f &min_point, LPoint3f &max_point,
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bool &found_any,
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const GeomVertexData *vertex_data,
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bool got_mat, const LMatrix4f &mat) const;
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INLINE void calc_tight_bounds(LPoint3f &min_point, LPoint3f &max_point,
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bool &found_any) const;
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static UpdateSeq get_next_modified();
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public:
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typedef pvector< PT(TextureStage) > ActiveTextureStages;
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typedef pset<TextureStage *> NoTexCoordStages;
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protected:
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virtual BoundingVolume *recompute_bound();
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private:
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void clear_prepared(PreparedGraphicsObjects *prepared_objects);
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bool check_will_be_valid(const GeomVertexData *vertex_data) const;
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private:
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typedef pvector<PT(GeomPrimitive) > Primitives;
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// We have to use reference-counting pointers here instead of having
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// explicit cleanup in the GeomVertexFormat destructor, because the
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// cache needs to be stored in the CycleData, which makes accurate
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// cleanup more difficult. We use the GeomCacheManager class to
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// avoid cache bloat.
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class CacheEntry : public GeomCacheEntry {
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public:
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INLINE CacheEntry(const GeomVertexData *source_data,
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const GeomMunger *modifier);
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INLINE CacheEntry(Geom *source,
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const GeomVertexData *source_data,
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const GeomMunger *modifier,
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const Geom *geom_result,
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const GeomVertexData *data_result);
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virtual ~CacheEntry();
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INLINE bool operator < (const CacheEntry &other) const;
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virtual void evict_callback();
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virtual void output(ostream &out) const;
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Geom *_source;
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CPT(GeomVertexData) _source_data;
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CPT(GeomMunger) _modifier;
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const Geom *_geom_result; // ref-counted if not same as _source
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CPT(GeomVertexData) _data_result;
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};
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typedef pset<PT(CacheEntry), IndirectLess<CacheEntry> > Cache;
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// This is the data that must be cycled between pipeline stages.
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class EXPCL_PANDA 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 int complete_pointers(TypedWritable **plist, BamReader *manager);
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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 Geom::get_class_type();
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}
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PT(GeomVertexData) _data;
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Primitives _primitives;
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PrimitiveType _primitive_type;
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ShadeModel _shade_model;
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int _geom_rendering;
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UsageHint _usage_hint;
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bool _got_usage_hint;
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UpdateSeq _modified;
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Cache _cache;
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};
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PipelineCycler<CData> _cycler;
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typedef CycleDataReader<CData> CDReader;
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typedef CycleDataWriter<CData> CDWriter;
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void reset_usage_hint(CDWriter &cdata);
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void reset_geom_rendering(CDWriter &cdata);
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// This works just like the Texture contexts: each Geom keeps a
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// record of all the PGO objects that hold the Geom, and vice-versa.
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typedef pmap<PreparedGraphicsObjects *, GeomContext *> Contexts;
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Contexts _contexts;
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static UpdateSeq _next_modified;
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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 void finalize(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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TypedWritableReferenceCount::init_type();
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BoundedObject::init_type();
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register_type(_type_handle, "Geom",
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TypedWritableReferenceCount::get_class_type(),
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BoundedObject::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 CacheEntry;
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friend class GeomMunger;
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friend class GeomContext;
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friend class PreparedGraphicsObjects;
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};
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INLINE ostream &operator << (ostream &out, const Geom &obj);
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#include "geom.I"
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#endif
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