238 lines
9.4 KiB
C++
238 lines
9.4 KiB
C++
// Filename: geomVertexWriter.h
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// Created by: drose (25Mar05)
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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) 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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////////////////////////////////////////////////////////////////////
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#ifndef GEOMVERTEXWRITER_H
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#define GEOMVERTEXWRITER_H
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#include "pandabase.h"
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#include "geomVertexData.h"
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#include "geomVertexColumn.h"
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#include "internalName.h"
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#include "luse.h"
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#include "pointerTo.h"
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////////////////////////////////////////////////////////////////////
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// Class : GeomVertexWriter
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// Description : This object provides a high-level interface for
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// quickly writing a sequence of numeric values from a
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// vertex table.
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//
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// This object can be used both to replace existing
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// vertices in the table, or to extend the table with
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// new vertices. The set_data*() family of methods can
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// only be used to replace existing data; it is an error
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// to allow these to run past the end of the data. The
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// add_data*() family of methods, on the other hand, can
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// be used to replace existing data or add new data; if
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// you call set_row() into the middle of existing
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// data the add_data*() methods will behave like the
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// corresponding set_data*(), but if they run past the
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// end of existing data they will quietly add new
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// vertices.
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//
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// Like GeomVertexReader, the writer is particularly
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// optimized for writing a single column of data values
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// for a series of vertices, without changing columns
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// between each number. Although you can also use one
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// GeomVertexWriter to write across the columns if it is
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// convenient, by calling set_column() repeatedly at
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// each vertex, it is faster to write down the columns,
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// and to use a different GeomVertexWriter for each
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// column.
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//
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// Note that, like a GeomVertexReader, a
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// GeomVertexWriter does not keep a reference count to
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// the actual vertex data buffer. This means that it is
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// important not to keep a GeomVertexWriter object
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// around over a long period of time in which the data
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// buffer is likely to be deallocated; it is intended
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// for making a quick pass over the data in one session.
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//
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// It also means that you should create any
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// GeomVertexWriters *before* creating GeomVertexReaders
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// on the same data, since the writer itself might cause
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// the vertex buffer to be deallocated. Better yet, use
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// a GeomVertexRewriter if you are going to create both
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// of them anyway.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_GOBJ GeomVertexWriter : public GeomEnums {
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PUBLISHED:
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INLINE GeomVertexWriter(Thread *current_thread = Thread::get_current_thread());
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INLINE GeomVertexWriter(GeomVertexData *vertex_data,
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Thread *current_thread = Thread::get_current_thread());
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INLINE GeomVertexWriter(GeomVertexData *vertex_data,
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const string &name,
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Thread *current_thread = Thread::get_current_thread());
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INLINE GeomVertexWriter(GeomVertexData *vertex_data,
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const InternalName *name,
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Thread *current_thread = Thread::get_current_thread());
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INLINE GeomVertexWriter(GeomVertexArrayData *array_data,
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Thread *current_thread = Thread::get_current_thread());
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INLINE GeomVertexWriter(GeomVertexArrayData *array_data,
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int column,
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Thread *current_thread = Thread::get_current_thread());
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public:
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INLINE GeomVertexWriter(GeomVertexDataPipelineWriter *data_writer,
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const InternalName *name);
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PUBLISHED:
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INLINE GeomVertexWriter(const GeomVertexWriter ©);
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INLINE void operator = (const GeomVertexWriter ©);
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INLINE ~GeomVertexWriter();
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INLINE GeomVertexData *get_vertex_data() const;
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INLINE GeomVertexArrayData *get_array_data() const;
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INLINE GeomVertexArrayDataHandle *get_array_handle() const;
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INLINE size_t get_stride() const;
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INLINE Thread *get_current_thread() const;
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INLINE bool set_column(int column);
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INLINE bool set_column(const string &name);
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INLINE bool set_column(const InternalName *name);
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bool set_column(int array, const GeomVertexColumn *column);
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INLINE void clear();
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bool reserve_num_rows(int num_rows);
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INLINE bool has_column() const;
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INLINE int get_array() const;
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INLINE const GeomVertexColumn *get_column() const;
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INLINE void set_row_unsafe(int row);
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INLINE void set_row(int row);
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INLINE int get_start_row() const;
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INLINE int get_write_row() const;
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INLINE bool is_at_end() const;
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INLINE void set_data1f(float data);
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INLINE void set_data2f(float x, float y);
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INLINE void set_data2f(const LVecBase2f &data);
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INLINE void set_data3f(float x, float y, float z);
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INLINE void set_data3f(const LVecBase3f &data);
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INLINE void set_data4f(float x, float y, float z, float w);
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INLINE void set_data4f(const LVecBase4f &data);
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INLINE void set_data1d(double data);
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INLINE void set_data2d(double x, double y);
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INLINE void set_data2d(const LVecBase2d &data);
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INLINE void set_data3d(double x, double y, double z);
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INLINE void set_data3d(const LVecBase3d &data);
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INLINE void set_data4d(double x, double y, double z, double w);
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INLINE void set_data4d(const LVecBase4d &data);
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INLINE void set_data1(PN_stdfloat data);
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INLINE void set_data2(PN_stdfloat x, PN_stdfloat y);
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INLINE void set_data2(const LVecBase2 &data);
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INLINE void set_data3(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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INLINE void set_data3(const LVecBase3 &data);
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INLINE void set_data4(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z, PN_stdfloat w);
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INLINE void set_data4(const LVecBase4 &data);
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INLINE void set_data1i(int data);
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INLINE void set_data2i(int a, int b);
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INLINE void set_data2i(const int data[2]);
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INLINE void set_data3i(int a, int b, int c);
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INLINE void set_data3i(const int data[3]);
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INLINE void set_data4i(int a, int b, int c, int d);
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INLINE void set_data4i(const int data[4]);
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INLINE void add_data1f(float data);
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INLINE void add_data2f(float x, float y);
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INLINE void add_data2f(const LVecBase2f &data);
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INLINE void add_data3f(float x, float y, float z);
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INLINE void add_data3f(const LVecBase3f &data);
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INLINE void add_data4f(float x, float y, float z, float w);
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INLINE void add_data4f(const LVecBase4f &data);
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INLINE void add_data1d(double data);
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INLINE void add_data2d(double x, double y);
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INLINE void add_data2d(const LVecBase2d &data);
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INLINE void add_data3d(double x, double y, double z);
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INLINE void add_data3d(const LVecBase3d &data);
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INLINE void add_data4d(double x, double y, double z, double w);
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INLINE void add_data4d(const LVecBase4d &data);
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INLINE void add_data1(PN_stdfloat data);
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INLINE void add_data2(PN_stdfloat x, PN_stdfloat y);
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INLINE void add_data2(const LVecBase2 &data);
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INLINE void add_data3(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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INLINE void add_data3(const LVecBase3 &data);
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INLINE void add_data4(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z, PN_stdfloat w);
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INLINE void add_data4(const LVecBase4 &data);
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INLINE void add_data1i(int data);
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INLINE void add_data2i(int a, int b);
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INLINE void add_data2i(const int data[2]);
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INLINE void add_data3i(int a, int b, int c);
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INLINE void add_data3i(const int data[3]);
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INLINE void add_data4i(int a, int b, int c, int d);
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INLINE void add_data4i(const int data[4]);
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void output(ostream &out) const;
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protected:
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INLINE GeomVertexColumn::Packer *get_packer() const;
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private:
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class Writer;
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void initialize();
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INLINE void set_pointer(int row);
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INLINE void quick_set_pointer(int row);
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INLINE unsigned char *inc_pointer();
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INLINE unsigned char *inc_add_pointer();
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bool set_vertex_column(int array, const GeomVertexColumn *column,
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GeomVertexDataPipelineWriter *data_writer);
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bool set_array_column(const GeomVertexColumn *column);
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// It is important that we only store *one* of the following two
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// pointers. If we are storing a GeomVertexData/array index, we
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// must not keep a pointer to the particular ArrayData we are
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// working on (if we do, it may result in an extra copy of the data
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// due to holding the reference count).
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PT(GeomVertexData) _vertex_data;
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int _array;
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PT(GeomVertexArrayData) _array_data;
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Thread *_current_thread;
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GeomVertexColumn::Packer *_packer;
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int _stride;
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PT(GeomVertexArrayDataHandle) _handle;
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unsigned char *_pointer_begin;
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unsigned char *_pointer_end;
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unsigned char *_pointer;
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int _start_row;
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#ifndef NDEBUG
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// This is defined just for the benefit of having something non-NULL
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// to return from a nassertr() call.
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static unsigned char empty_buffer[100];
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#endif
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};
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INLINE ostream &
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operator << (ostream &out, const GeomVertexWriter &writer) {
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writer.output(out);
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return out;
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}
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#include "geomVertexWriter.I"
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#endif
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