417 lines
15 KiB
C
417 lines
15 KiB
C
|
/**
|
||
|
|
* PANDA 3D SOFTWARE
|
||
|
|
* Copyright (c) Carnegie Mellon University. All rights reserved.
|
||
|
|
*
|
||
|
|
* All use of this software is subject to the terms of the revised BSD
|
||
|
|
* license. You should have received a copy of this license along
|
||
|
|
* with this source code in a file named "LICENSE."
|
||
|
|
*
|
||
|
|
* @file geomPrimitive.h
|
||
|
|
* @author drose
|
||
|
|
* @date 2005-03-06
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef GEOMPRIMITIVE_H
|
||
|
|
#define GEOMPRIMITIVE_H
|
||
|
|
|
||
|
|
#include "pandabase.h"
|
||
|
|
#include "geomEnums.h"
|
||
|
|
#include "geomVertexArrayData.h"
|
||
|
|
#include "geomVertexData.h"
|
||
|
|
#include "copyOnWriteObject.h"
|
||
|
|
#include "luse.h"
|
||
|
|
#include "updateSeq.h"
|
||
|
|
#include "pointerTo.h"
|
||
|
|
#include "pta_int.h"
|
||
|
|
#include "pStatCollector.h"
|
||
|
|
#include "cycleData.h"
|
||
|
|
#include "cycleDataReader.h"
|
||
|
|
#include "cycleDataWriter.h"
|
||
|
|
#include "cycleDataStageReader.h"
|
||
|
|
#include "cycleDataStageWriter.h"
|
||
|
|
#include "pipelineCycler.h"
|
||
|
|
#include "deletedChain.h"
|
||
|
|
|
||
|
|
class PreparedGraphicsObjects;
|
||
|
|
class IndexBufferContext;
|
||
|
|
class GraphicsStateGuardianBase;
|
||
|
|
class FactoryParams;
|
||
|
|
class GeomPrimitivePipelineReader;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is an abstract base class for a family of classes that represent the
|
||
|
|
* fundamental geometry primitives that may be stored in a Geom.
|
||
|
|
*
|
||
|
|
* They all have in common the fact that they are defined by tables of vertex
|
||
|
|
* data stored in a GeomVertexData object. Each GeomPrimitive object contains
|
||
|
|
* an ordered list of integers, which index into the vertex array defined by
|
||
|
|
* the GeomVertexData and define the particular vertices of the GeomVertexData
|
||
|
|
* that are used for this primitive.
|
||
|
|
*
|
||
|
|
* The meaning of a given arrangement of vertices is defined by each
|
||
|
|
* individual primitive type; for instance, a GeomTriangle renders a triangle
|
||
|
|
* from each three consecutive vertices, while a GeomTriangleStrip renders a
|
||
|
|
* strip of (n - 2) connected triangles from each sequence of n vertices.
|
||
|
|
*/
|
||
|
|
class EXPCL_PANDA_GOBJ GeomPrimitive : public CopyOnWriteObject, public GeomEnums {
|
||
|
|
protected:
|
||
|
|
GeomPrimitive();
|
||
|
|
virtual PT(CopyOnWriteObject) make_cow_copy();
|
||
|
|
|
||
|
|
PUBLISHED:
|
||
|
|
explicit GeomPrimitive(UsageHint usage_hint);
|
||
|
|
GeomPrimitive(const GeomPrimitive ©);
|
||
|
|
void operator = (const GeomPrimitive ©);
|
||
|
|
virtual ~GeomPrimitive();
|
||
|
|
ALLOC_DELETED_CHAIN(GeomPrimitive);
|
||
|
|
|
||
|
|
virtual PT(GeomPrimitive) make_copy() const=0;
|
||
|
|
|
||
|
|
virtual PrimitiveType get_primitive_type() const=0;
|
||
|
|
virtual int get_geom_rendering() const;
|
||
|
|
MAKE_PROPERTY(primitive_type, get_primitive_type);
|
||
|
|
MAKE_PROPERTY(geom_rendering, get_geom_rendering);
|
||
|
|
|
||
|
|
INLINE ShadeModel get_shade_model() const;
|
||
|
|
INLINE void set_shade_model(ShadeModel shade_model);
|
||
|
|
MAKE_PROPERTY(shade_model, get_shade_model);
|
||
|
|
|
||
|
|
INLINE UsageHint get_usage_hint() const;
|
||
|
|
void set_usage_hint(UsageHint usage_hint);
|
||
|
|
MAKE_PROPERTY(usage_hint, get_usage_hint);
|
||
|
|
|
||
|
|
INLINE NumericType get_index_type() const;
|
||
|
|
void set_index_type(NumericType index_type);
|
||
|
|
MAKE_PROPERTY(index_type, get_index_type);
|
||
|
|
|
||
|
|
// The following published methods are provided for safe, high-level
|
||
|
|
// iteration through the vertices and sub-primitives within the
|
||
|
|
// GeomPrimitive class. These work correctly regardless of the primitive
|
||
|
|
// type and without depending on knowledge about the way primitives' lengths
|
||
|
|
// are encoded. You can also safely build up a composite primitive using
|
||
|
|
// these methods.
|
||
|
|
|
||
|
|
INLINE bool is_composite() const;
|
||
|
|
INLINE bool is_indexed() const;
|
||
|
|
INLINE int get_first_vertex() const;
|
||
|
|
INLINE int get_num_vertices() const;
|
||
|
|
INLINE int get_vertex(int i) const;
|
||
|
|
MAKE_SEQ(get_vertex_list, get_num_vertices, get_vertex);
|
||
|
|
void add_vertex(int vertex);
|
||
|
|
INLINE void add_vertices(int v1, int v2);
|
||
|
|
INLINE void add_vertices(int v1, int v2, int v3);
|
||
|
|
INLINE void add_vertices(int v1, int v2, int v3, int v4);
|
||
|
|
void add_consecutive_vertices(int start, int num_vertices);
|
||
|
|
void add_next_vertices(int num_vertices);
|
||
|
|
void reserve_num_vertices(int num_vertices);
|
||
|
|
bool close_primitive();
|
||
|
|
void clear_vertices();
|
||
|
|
void offset_vertices(int offset);
|
||
|
|
void offset_vertices(int offset, int begin_row, int end_row);
|
||
|
|
void make_nonindexed(GeomVertexData *dest, const GeomVertexData *source);
|
||
|
|
void pack_vertices(GeomVertexData *dest, const GeomVertexData *source);
|
||
|
|
void make_indexed();
|
||
|
|
|
||
|
|
INLINE int get_num_primitives() const;
|
||
|
|
int get_primitive_start(int n) const;
|
||
|
|
int get_primitive_end(int n) const;
|
||
|
|
int get_primitive_num_vertices(int n) const;
|
||
|
|
int get_num_used_vertices() const;
|
||
|
|
|
||
|
|
INLINE int get_num_faces() const;
|
||
|
|
INLINE int get_primitive_num_faces(int n) const;
|
||
|
|
|
||
|
|
INLINE int get_min_vertex() const;
|
||
|
|
int get_primitive_min_vertex(int n) const;
|
||
|
|
INLINE int get_max_vertex() const;
|
||
|
|
int get_primitive_max_vertex(int n) const;
|
||
|
|
|
||
|
|
CPT(GeomPrimitive) decompose() const;
|
||
|
|
CPT(GeomPrimitive) rotate() const;
|
||
|
|
CPT(GeomPrimitive) doubleside() const;
|
||
|
|
CPT(GeomPrimitive) reverse() const;
|
||
|
|
CPT(GeomPrimitive) match_shade_model(ShadeModel shade_model) const;
|
||
|
|
CPT(GeomPrimitive) make_points() const;
|
||
|
|
CPT(GeomPrimitive) make_lines() const;
|
||
|
|
CPT(GeomPrimitive) make_patches() const;
|
||
|
|
virtual CPT(GeomPrimitive) make_adjacency() const;
|
||
|
|
|
||
|
|
int get_num_bytes() const;
|
||
|
|
INLINE int get_data_size_bytes() const;
|
||
|
|
INLINE UpdateSeq get_modified() const;
|
||
|
|
MAKE_PROPERTY(num_bytes, get_num_bytes);
|
||
|
|
MAKE_PROPERTY(data_size_bytes, get_data_size_bytes);
|
||
|
|
MAKE_PROPERTY(modified, get_modified);
|
||
|
|
|
||
|
|
bool request_resident(Thread *current_thread = Thread::get_current_thread()) const;
|
||
|
|
|
||
|
|
INLINE bool check_valid(const GeomVertexData *vertex_data) const;
|
||
|
|
INLINE bool check_valid(const GeomVertexDataPipelineReader *data_reader) const;
|
||
|
|
|
||
|
|
virtual void output(std::ostream &out) const;
|
||
|
|
virtual void write(std::ostream &out, int indent_level) const;
|
||
|
|
|
||
|
|
PUBLISHED:
|
||
|
|
/*
|
||
|
|
* These public methods are not intended for high-level usage. They are
|
||
|
|
* public so that low-level code that absolutely needs fast access to the
|
||
|
|
* primitive data can get to it, but using them requires knowledge about how
|
||
|
|
* the component primitives are encoded within the GeomPrimitive class, and
|
||
|
|
* it's easy to screw something up. Also, if too many code samples depend on
|
||
|
|
* this internal knowledge, it may make it difficult to extend this class
|
||
|
|
* later. It is recommended that application-level code use the above
|
||
|
|
* interfaces instead.
|
||
|
|
*/
|
||
|
|
|
||
|
|
INLINE CPT(GeomVertexArrayData) get_vertices() const;
|
||
|
|
INLINE CPT(GeomVertexArrayDataHandle) get_vertices_handle(Thread *current_thread) const;
|
||
|
|
PT(GeomVertexArrayData) modify_vertices(int num_vertices = -1);
|
||
|
|
INLINE PT(GeomVertexArrayDataHandle) modify_vertices_handle(Thread *current_thread);
|
||
|
|
void set_vertices(const GeomVertexArrayData *vertices, int num_vertices = -1);
|
||
|
|
void set_nonindexed_vertices(int first_vertex, int num_vertices);
|
||
|
|
|
||
|
|
INLINE int get_index_stride() const;
|
||
|
|
INLINE int get_strip_cut_index() const;
|
||
|
|
MAKE_PROPERTY(index_stride, get_index_stride);
|
||
|
|
MAKE_PROPERTY(strip_cut_index, get_strip_cut_index);
|
||
|
|
|
||
|
|
INLINE CPTA_int get_ends() const;
|
||
|
|
PTA_int modify_ends();
|
||
|
|
void set_ends(PTA_int ends);
|
||
|
|
|
||
|
|
INLINE CPT(GeomVertexArrayData) get_mins() const;
|
||
|
|
INLINE CPT(GeomVertexArrayData) get_maxs() const;
|
||
|
|
MAKE_PROPERTY(mins, get_mins);
|
||
|
|
MAKE_PROPERTY(maxs, get_maxs);
|
||
|
|
|
||
|
|
void set_minmax(int min_vertex, int max_vertex,
|
||
|
|
GeomVertexArrayData *mins, GeomVertexArrayData *maxs);
|
||
|
|
void clear_minmax();
|
||
|
|
|
||
|
|
virtual int get_num_vertices_per_primitive() const;
|
||
|
|
virtual int get_min_num_vertices_per_primitive() const;
|
||
|
|
virtual int get_num_unused_vertices_per_primitive() const;
|
||
|
|
MAKE_PROPERTY(num_vertices_per_primitive, get_num_vertices_per_primitive);
|
||
|
|
MAKE_PROPERTY(min_num_vertices_per_primitive, get_min_num_vertices_per_primitive);
|
||
|
|
MAKE_PROPERTY(num_unused_vertices_per_primitive, get_num_unused_vertices_per_primitive);
|
||
|
|
|
||
|
|
public:
|
||
|
|
void prepare(PreparedGraphicsObjects *prepared_objects);
|
||
|
|
bool is_prepared(PreparedGraphicsObjects *prepared_objects) const;
|
||
|
|
|
||
|
|
IndexBufferContext *prepare_now(PreparedGraphicsObjects *prepared_objects,
|
||
|
|
GraphicsStateGuardianBase *gsg);
|
||
|
|
bool release(PreparedGraphicsObjects *prepared_objects);
|
||
|
|
int release_all();
|
||
|
|
|
||
|
|
static const GeomVertexArrayFormat *get_index_format(NumericType index_type);
|
||
|
|
INLINE const GeomVertexArrayFormat *get_index_format() const;
|
||
|
|
INLINE PT(GeomVertexArrayData) make_index_data() const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
static CPT(GeomVertexArrayFormat) make_index_format(NumericType index_type);
|
||
|
|
|
||
|
|
void clear_prepared(PreparedGraphicsObjects *prepared_objects);
|
||
|
|
static int get_highest_index_value(NumericType index_type);
|
||
|
|
static int get_strip_cut_index(NumericType index_type);
|
||
|
|
|
||
|
|
public:
|
||
|
|
virtual bool draw(GraphicsStateGuardianBase *gsg,
|
||
|
|
const GeomPrimitivePipelineReader *reader,
|
||
|
|
bool force) const=0;
|
||
|
|
|
||
|
|
void calc_tight_bounds(LPoint3 &min_point, LPoint3 &max_point,
|
||
|
|
PN_stdfloat &sq_center_dist, bool &found_any,
|
||
|
|
const GeomVertexData *vertex_data,
|
||
|
|
bool got_mat, const LMatrix4 &mat,
|
||
|
|
const InternalName *column_name,
|
||
|
|
Thread *current_thread) const;
|
||
|
|
|
||
|
|
void calc_sphere_radius(const LPoint3 ¢er,
|
||
|
|
PN_stdfloat &sq_radius, bool &found_any,
|
||
|
|
const GeomVertexData *vertex_data,
|
||
|
|
Thread *current_thread) const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual CPT(GeomPrimitive) decompose_impl() const;
|
||
|
|
virtual CPT(GeomVertexArrayData) rotate_impl() const;
|
||
|
|
virtual CPT(GeomPrimitive) doubleside_impl() const;
|
||
|
|
virtual CPT(GeomPrimitive) reverse_impl() const;
|
||
|
|
virtual bool requires_unused_vertices() const;
|
||
|
|
virtual void append_unused_vertices(GeomVertexArrayData *vertices,
|
||
|
|
int vertex);
|
||
|
|
|
||
|
|
private:
|
||
|
|
class CData;
|
||
|
|
|
||
|
|
void recompute_minmax(CData *cdata);
|
||
|
|
void do_make_indexed(CData *cdata);
|
||
|
|
void consider_elevate_index_type(CData *cdata, int vertex);
|
||
|
|
void do_set_index_type(CData *cdata, NumericType index_type);
|
||
|
|
PT(GeomVertexArrayData) do_modify_vertices(CData *cdata);
|
||
|
|
|
||
|
|
private:
|
||
|
|
// A GeomPrimitive keeps a list (actually, a map) of all the
|
||
|
|
// PreparedGraphicsObjects tables that it has been prepared into. Each PGO
|
||
|
|
// conversely keeps a list (a set) of all the Geoms that have been prepared
|
||
|
|
// there. When either destructs, it removes itself from the other's list.
|
||
|
|
typedef pmap<PreparedGraphicsObjects *, IndexBufferContext *> Contexts;
|
||
|
|
Contexts _contexts;
|
||
|
|
|
||
|
|
// This is the data that must be cycled between pipeline stages.
|
||
|
|
class EXPCL_PANDA_GOBJ CData : public CycleData {
|
||
|
|
public:
|
||
|
|
INLINE CData();
|
||
|
|
INLINE CData(const CData ©);
|
||
|
|
ALLOC_DELETED_CHAIN(CData);
|
||
|
|
|
||
|
|
virtual CycleData *make_copy() const;
|
||
|
|
virtual void write_datagram(BamWriter *manager, Datagram &dg) const;
|
||
|
|
virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
|
||
|
|
virtual void fillin(DatagramIterator &scan, BamReader *manager);
|
||
|
|
virtual TypeHandle get_parent_type() const {
|
||
|
|
return GeomPrimitive::get_class_type();
|
||
|
|
}
|
||
|
|
|
||
|
|
ShadeModel _shade_model;
|
||
|
|
int _first_vertex;
|
||
|
|
int _num_vertices;
|
||
|
|
NumericType _index_type;
|
||
|
|
UsageHint _usage_hint;
|
||
|
|
COWPT(GeomVertexArrayData) _vertices;
|
||
|
|
PTA_int _ends;
|
||
|
|
COWPT(GeomVertexArrayData) _mins;
|
||
|
|
COWPT(GeomVertexArrayData) _maxs;
|
||
|
|
UpdateSeq _modified;
|
||
|
|
|
||
|
|
bool _got_minmax;
|
||
|
|
unsigned int _min_vertex;
|
||
|
|
unsigned int _max_vertex;
|
||
|
|
|
||
|
|
public:
|
||
|
|
static TypeHandle get_class_type() {
|
||
|
|
return _type_handle;
|
||
|
|
}
|
||
|
|
static void init_type() {
|
||
|
|
register_type(_type_handle, "GeomPrimitive::CData");
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
static TypeHandle _type_handle;
|
||
|
|
|
||
|
|
friend class GeomPrimitive;
|
||
|
|
};
|
||
|
|
|
||
|
|
PipelineCycler<CData> _cycler;
|
||
|
|
typedef CycleDataReader<CData> CDReader;
|
||
|
|
typedef CycleDataWriter<CData> CDWriter;
|
||
|
|
typedef CycleDataStageReader<CData> CDStageReader;
|
||
|
|
typedef CycleDataStageWriter<CData> CDStageWriter;
|
||
|
|
|
||
|
|
private:
|
||
|
|
static PStatCollector _decompose_pcollector;
|
||
|
|
static PStatCollector _doubleside_pcollector;
|
||
|
|
static PStatCollector _reverse_pcollector;
|
||
|
|
static PStatCollector _rotate_pcollector;
|
||
|
|
|
||
|
|
public:
|
||
|
|
virtual void write_datagram(BamWriter *manager, Datagram &dg);
|
||
|
|
|
||
|
|
virtual void finalize(BamReader *manager);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
void fillin(DatagramIterator &scan, BamReader *manager);
|
||
|
|
|
||
|
|
public:
|
||
|
|
static TypeHandle get_class_type() {
|
||
|
|
return _type_handle;
|
||
|
|
}
|
||
|
|
static void init_type() {
|
||
|
|
CopyOnWriteObject::init_type();
|
||
|
|
register_type(_type_handle, "GeomPrimitive",
|
||
|
|
CopyOnWriteObject::get_class_type());
|
||
|
|
CData::init_type();
|
||
|
|
}
|
||
|
|
virtual TypeHandle get_type() const {
|
||
|
|
return get_class_type();
|
||
|
|
}
|
||
|
|
virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
|
||
|
|
|
||
|
|
private:
|
||
|
|
static TypeHandle _type_handle;
|
||
|
|
|
||
|
|
friend class Geom;
|
||
|
|
friend class PreparedGraphicsObjects;
|
||
|
|
friend class GeomPrimitivePipelineReader;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encapsulates the data from a GeomPrimitive, pre-fetched for one stage of
|
||
|
|
* the pipeline.
|
||
|
|
*/
|
||
|
|
class EXPCL_PANDA_GOBJ GeomPrimitivePipelineReader : public GeomEnums {
|
||
|
|
public:
|
||
|
|
INLINE GeomPrimitivePipelineReader(CPT(GeomPrimitive) object, Thread *current_thread);
|
||
|
|
GeomPrimitivePipelineReader(const GeomPrimitivePipelineReader ©) = delete;
|
||
|
|
INLINE ~GeomPrimitivePipelineReader();
|
||
|
|
|
||
|
|
ALLOC_DELETED_CHAIN(GeomPrimitivePipelineReader);
|
||
|
|
|
||
|
|
GeomPrimitivePipelineReader &operator = (const GeomPrimitivePipelineReader ©) = delete;
|
||
|
|
|
||
|
|
INLINE const GeomPrimitive *get_object() const;
|
||
|
|
INLINE Thread *get_current_thread() const;
|
||
|
|
|
||
|
|
void check_minmax() const;
|
||
|
|
|
||
|
|
INLINE ShadeModel get_shade_model() const;
|
||
|
|
INLINE UsageHint get_usage_hint() const;
|
||
|
|
INLINE NumericType get_index_type() const;
|
||
|
|
INLINE bool is_indexed() const;
|
||
|
|
int get_first_vertex() const;
|
||
|
|
INLINE int get_num_vertices() const;
|
||
|
|
int get_vertex(int i) const;
|
||
|
|
int get_num_primitives() const;
|
||
|
|
void get_referenced_vertices(BitArray &bits) const;
|
||
|
|
INLINE int get_min_vertex() const;
|
||
|
|
INLINE int get_max_vertex() const;
|
||
|
|
INLINE int get_data_size_bytes() const;
|
||
|
|
INLINE UpdateSeq get_modified() const;
|
||
|
|
bool check_valid(const GeomVertexDataPipelineReader *data_reader) const;
|
||
|
|
INLINE int get_index_stride() const;
|
||
|
|
INLINE const unsigned char *get_read_pointer(bool force) const;
|
||
|
|
INLINE int get_strip_cut_index() const;
|
||
|
|
INLINE CPTA_int get_ends() const;
|
||
|
|
INLINE CPT(GeomVertexArrayData) get_mins() const;
|
||
|
|
INLINE CPT(GeomVertexArrayData) get_maxs() const;
|
||
|
|
|
||
|
|
INLINE IndexBufferContext *prepare_now(PreparedGraphicsObjects *prepared_objects,
|
||
|
|
GraphicsStateGuardianBase *gsg) const;
|
||
|
|
INLINE bool draw(GraphicsStateGuardianBase *gsg, bool force) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
CPT(GeomPrimitive) _object;
|
||
|
|
Thread *_current_thread;
|
||
|
|
const GeomPrimitive::CData *_cdata;
|
||
|
|
|
||
|
|
CPT(GeomVertexArrayData) _vertices;
|
||
|
|
const GeomVertexArrayData::CData *_vertices_cdata;
|
||
|
|
|
||
|
|
public:
|
||
|
|
static TypeHandle get_class_type() {
|
||
|
|
return _type_handle;
|
||
|
|
}
|
||
|
|
static void init_type() {
|
||
|
|
register_type(_type_handle, "GeomPrimitivePipelineReader");
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
static TypeHandle _type_handle;
|
||
|
|
};
|
||
|
|
|
||
|
|
INLINE std::ostream &operator << (std::ostream &out, const GeomPrimitive &obj);
|
||
|
|
|
||
|
|
#include "geomPrimitive.I"
|
||
|
|
|
||
|
|
#endif
|