Panda3D
Public Member Functions | List of all members
GeomVertexRewriter Class Reference

This object provides the functionality of both a GeomVertexReader and a GeomVertexWriter, combined together into one convenient package. More...

Inheritance diagram for GeomVertexRewriter:
GeomVertexWriter GeomVertexReader GeomEnums GeomEnums

Public Member Functions

 __init__ (GeomVertexArrayData array_data, Thread current_thread)
 Constructs a new rewriter to process the vertices of the indicated array only. More...
 
 __init__ (GeomVertexArrayData array_data, int column, Thread current_thread)
 Constructs a new rewriter to process the vertices of the indicated array only. More...
 
 __init__ (GeomVertexData vertex_data, const InternalName name, Thread current_thread)
 Constructs a new rewriter to process the vertices of the indicated data object. More...
 
 __init__ (GeomVertexData vertex_data, Thread current_thread)
 Constructs a new rewriter to process the vertices of the indicated data object. More...
 
 __init__ (const GeomVertexRewriter copy)
 
 __init__ (Thread current_thread)
 Constructs an invalid GeomVertexRewriter. More...
 
 clear ()
 Resets the GeomVertexRewriter to the initial state. More...
 
int getArray ()
 Returns the array index containing the data type that the rewriter is working on. More...
 
GeomVertexArrayData getArrayData ()
 Returns the particular array object that the rewriter is currently processing. More...
 
GeomVertexArrayDataHandle getArrayHandle ()
 Returns the write handle to the array object that the rewriter is currently processing. More...
 
const GeomVertexColumn getColumn ()
 Returns the description of the data type that the rewriter is working on. More...
 
Thread getCurrentThread ()
 Returns the Thread pointer of the currently-executing thread, as passed to the constructor of this object. More...
 
int getStartRow ()
 Returns the row index at which the rewriter started. More...
 
int getStride ()
 Returns the per-row stride (bytes between consecutive rows) of the underlying vertex array. More...
 
GeomVertexData getVertexData ()
 Returns the vertex data object that the rewriter is processing. More...
 
bool hasColumn ()
 Returns true if a valid data type has been successfully set, or false if the data type does not exist. More...
 
bool isAtEnd ()
 Returns true if the reader or writer is currently at the end of the list of vertices, false otherwise. More...
 
GeomVertexRewriter operator= (const GeomVertexRewriter copy)
 
 output (Ostream out)
 
bool setColumn (const InternalName name)
 Sets up the rewriter to use the data type with the indicated name. More...
 
bool setColumn (int column)
 Sets up the rewriter to use the nth data type of the GeomVertexFormat, numbering from 0. More...
 
bool setColumn (int array, const GeomVertexColumn column)
 Sets up the rewriter to use the indicated column description on the given array. More...
 
 setRow (int row)
 Sets the start, write, and write index to the indicated value. More...
 
 setRowUnsafe (int row)
 Sets the start row to the indicated value, without internal checks. More...
 
- Public Member Functions inherited from GeomVertexWriter
 __init__ (GeomVertexArrayData array_data, Thread current_thread)
 Constructs a new writer to process the vertices of the indicated array only. More...
 
 __init__ (GeomVertexArrayData array_data, int column, Thread current_thread)
 Constructs a new writer to process the vertices of the indicated array only. More...
 
 __init__ (GeomVertexData vertex_data, const InternalName name, Thread current_thread)
 Constructs a new writer to process the vertices of the indicated data object. More...
 
 __init__ (GeomVertexData vertex_data, Thread current_thread)
 Constructs a new writer to process the vertices of the indicated data object. More...
 
 __init__ (const GeomVertexWriter copy)
 
 __init__ (Thread current_thread)
 Constructs an invalid GeomVertexWriter. More...
 
 addData1 (float data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 addData1d (double data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 addData1f (float data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 addData1i (int data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 addData2 (const LVecBase2 data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2 (float x, float y)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2d (const LVecBase2d data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2d (double x, double y)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2f (const LVecBase2f data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2f (float x, float y)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2i (const LVecBase2i data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData2i (int a, int b)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 addData3 (const LVecBase3 data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3 (float x, float y, float z)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3d (const LVecBase3d data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3d (double x, double y, double z)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3f (const LVecBase3f data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3f (float x, float y, float z)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3i (const LVecBase3i data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData3i (int a, int b, int c)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 addData4 (const LVecBase4 data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4 (float x, float y, float z, float w)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4d (const LVecBase4d data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4d (double x, double y, double z, double w)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4f (const LVecBase4f data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4f (float x, float y, float z, float w)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4i (const LVecBase4i data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addData4i (int a, int b, int c, int d)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 addMatrix3 (const LMatrix3 mat)
 Sets the write row to a 3-by-3 matrix, and advances the write row. More...
 
 addMatrix3d (const LMatrix3d mat)
 Sets the write row to a 3-by-3 matrix, and advances the write row. More...
 
 addMatrix3f (const LMatrix3f mat)
 Sets the write row to a 3-by-3 matrix, and advances the write row. More...
 
 addMatrix4 (const LMatrix4 mat)
 Sets the write row to a 4-by-4 matrix, and advances the write row. More...
 
 addMatrix4d (const LMatrix4d mat)
 Sets the write row to a 4-by-4 matrix, and advances the write row. More...
 
 addMatrix4f (const LMatrix4f mat)
 Sets the write row to a 4-by-4 matrix, and advances the write row. More...
 
 clear ()
 Resets the GeomVertexWriter to the initial state. More...
 
int getArray ()
 Returns the array index containing the data type that the writer is working on. More...
 
GeomVertexArrayData getArrayData ()
 Returns the particular array object that the writer is currently processing. More...
 
GeomVertexArrayDataHandle getArrayHandle ()
 Returns the write handle to the array object that the writer is currently processing. More...
 
const GeomVertexColumn getColumn ()
 Returns the description of the data type that the writer is working on. More...
 
Thread getCurrentThread ()
 Returns the Thread pointer of the currently-executing thread, as passed to the constructor of this object. More...
 
int getStartRow ()
 Returns the row index at which the writer started. More...
 
int getStride ()
 Returns the per-row stride (bytes between consecutive rows) of the underlying vertex array. More...
 
GeomVertexData getVertexData ()
 Returns the vertex data object that the writer is processing. More...
 
int getWriteRow ()
 Returns the row index to which the data will be written at the next call to set_data*() or add_data*(). More...
 
bool hasColumn ()
 Returns true if a valid data type has been successfully set, or false if the data type does not exist. More...
 
bool isAtEnd ()
 Returns true if the writer is currently at the end of the list of vertices, false otherwise. More...
 
GeomVertexWriter operator= (const GeomVertexWriter copy)
 
 output (Ostream out)
 
bool reserveNumRows (int num_rows)
 This ensures that enough memory space for num_rows is allocated, so that you may add up to num_rows rows without causing a new memory allocation. More...
 
bool setColumn (const InternalName name)
 Sets up the writer to use the data type with the indicated name. More...
 
bool setColumn (int column)
 Sets up the writer to use the nth data type of the GeomVertexFormat, numbering from 0. More...
 
bool setColumn (int array, const GeomVertexColumn column)
 Sets up the writer to use the indicated column description on the given array. More...
 
 setData1 (float data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 setData1d (double data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 setData1f (float data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 setData1i (int data)
 Sets the write row to a particular 1-component value, and advances the write row. More...
 
 setData2 (const LVecBase2 data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2 (float x, float y)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2d (const LVecBase2d data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2d (double x, double y)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2f (const LVecBase2f data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2f (float x, float y)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2i (const LVecBase2i data)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData2i (int a, int b)
 Sets the write row to a particular 2-component value, and advances the write row. More...
 
 setData3 (const LVecBase3 data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3 (float x, float y, float z)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3d (const LVecBase3d data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3d (double x, double y, double z)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3f (const LVecBase3f data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3f (float x, float y, float z)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3i (const LVecBase3i data)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData3i (int a, int b, int c)
 Sets the write row to a particular 3-component value, and advances the write row. More...
 
 setData4 (const LVecBase4 data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4 (float x, float y, float z, float w)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4d (const LVecBase4d data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4d (double x, double y, double z, double w)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4f (const LVecBase4f data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4f (float x, float y, float z, float w)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4i (const LVecBase4i data)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setData4i (int a, int b, int c, int d)
 Sets the write row to a particular 4-component value, and advances the write row. More...
 
 setMatrix3 (const LMatrix3 mat)
 Sets the write row to a 3-by-3 matrix, and advances the write row. More...
 
 setMatrix3d (const LMatrix3d mat)
 Sets the write row to a 3-by-3 matrix, and advances the write row. More...
 
 setMatrix3f (const LMatrix3f mat)
 Sets the write row to a 3-by-3 matrix, and advances the write row. More...
 
 setMatrix4 (const LMatrix4 mat)
 Sets the write row to a 4-by-4 matrix, and advances the write row. More...
 
 setMatrix4d (const LMatrix4d mat)
 Sets the write row to a 4-by-4 matrix, and advances the write row. More...
 
 setMatrix4f (const LMatrix4f mat)
 Sets the write row to a 4-by-4 matrix, and advances the write row. More...
 
 setRow (int row)
 Sets the start row to the indicated value. More...
 
 setRowUnsafe (int row)
 Sets the start row to the indicated value, without internal checks. More...
 
- Public Member Functions inherited from GeomEnums
 __init__ ()
 
 __init__ (const GeomEnums)
 
- Public Member Functions inherited from GeomVertexReader
 __init__ (const GeomVertexArrayData array_data, Thread current_thread)
 Constructs a new reader to process the vertices of the indicated array only. More...
 
 __init__ (const GeomVertexArrayData array_data, int column, Thread current_thread)
 Constructs a new reader to process the vertices of the indicated array only. More...
 
 __init__ (const GeomVertexData vertex_data, const InternalName name, Thread current_thread)
 Constructs a new reader to process the vertices of the indicated data object. More...
 
 __init__ (const GeomVertexData vertex_data, Thread current_thread)
 Constructs a new reader to process the vertices of the indicated data object. More...
 
 __init__ (const GeomVertexReader copy)
 
 __init__ (Thread current_thread)
 Constructs an invalid GeomVertexReader. More...
 
 clear ()
 Resets the GeomVertexReader to the initial state. More...
 
int getArray ()
 Returns the array index containing the data type that the reader is working on. More...
 
const GeomVertexArrayData getArrayData ()
 Returns the particular array object that the reader is currently processing. More...
 
const GeomVertexArrayDataHandle getArrayHandle ()
 Returns the read handle to the array object that the read is currently processing. More...
 
const GeomVertexColumn getColumn ()
 Returns the description of the data type that the reader is working on. More...
 
Thread getCurrentThread ()
 Returns the Thread pointer of the currently-executing thread, as passed to the constructor of this object. More...
 
float getData1 ()
 Returns the data associated with the read row, expressed as a 1-component value, and advances the read row. More...
 
double getData1d ()
 Returns the data associated with the read row, expressed as a 1-component value, and advances the read row. More...
 
float getData1f ()
 Returns the data associated with the read row, expressed as a 1-component value, and advances the read row. More...
 
int getData1i ()
 Returns the data associated with the read row, expressed as a 1-component value, and advances the read row. More...
 
const LVecBase2 getData2 ()
 Returns the data associated with the read row, expressed as a 2-component value, and advances the read row. More...
 
const LVecBase2d getData2d ()
 Returns the data associated with the read row, expressed as a 2-component value, and advances the read row. More...
 
const LVecBase2f getData2f ()
 Returns the data associated with the read row, expressed as a 2-component value, and advances the read row. More...
 
const LVecBase2i getData2i ()
 Returns the data associated with the read row, expressed as a 2-component value, and advances the read row. More...
 
const LVecBase3 getData3 ()
 Returns the data associated with the read row, expressed as a 3-component value, and advances the read row. More...
 
const LVecBase3d getData3d ()
 Returns the data associated with the read row, expressed as a 3-component value, and advances the read row. More...
 
const LVecBase3f getData3f ()
 Returns the data associated with the read row, expressed as a 3-component value, and advances the read row. More...
 
const LVecBase3i getData3i ()
 Returns the data associated with the read row, expressed as a 3-component value, and advances the read row. More...
 
const LVecBase4 getData4 ()
 Returns the data associated with the read row, expressed as a 4-component value, and advances the read row. More...
 
const LVecBase4d getData4d ()
 Returns the data associated with the read row, expressed as a 4-component value, and advances the read row. More...
 
const LVecBase4f getData4f ()
 Returns the data associated with the read row, expressed as a 4-component value, and advances the read row. More...
 
const LVecBase4i getData4i ()
 Returns the data associated with the read row, expressed as a 4-component value, and advances the read row. More...
 
bool getForce ()
 Returns the value of the force flag. More...
 
LMatrix3 getMatrix3 ()
 Returns the 3-by-3 matrix associated with the read row and advances the read row. More...
 
LMatrix3d getMatrix3d ()
 Returns the 3-by-3 matrix associated with the read row and advances the read row. More...
 
LMatrix3f getMatrix3f ()
 Returns the 3-by-3 matrix associated with the read row and advances the read row. More...
 
LMatrix4 getMatrix4 ()
 Returns the 4-by-4 matrix associated with the read row and advances the read row. More...
 
LMatrix4d getMatrix4d ()
 Returns the 4-by-4 matrix associated with the read row and advances the read row. More...
 
LMatrix4f getMatrix4f ()
 Returns the 4-by-4 matrix associated with the read row and advances the read row. More...
 
int getReadRow ()
 Returns the row index from which the data will be retrieved by the next call to get_data*(). More...
 
int getStartRow ()
 Returns the row index at which the reader started. More...
 
int getStride ()
 Returns the per-row stride (bytes between consecutive rows) of the underlying vertex array. More...
 
const GeomVertexData getVertexData ()
 Returns the vertex data object that the reader is processing. More...
 
bool hasColumn ()
 Returns true if a valid data type has been successfully set, or false if the data type does not exist (or if get_force() is false and the vertex data is nonresident). More...
 
bool isAtEnd ()
 Returns true if the reader is currently at the end of the list of vertices, false otherwise. More...
 
GeomVertexReader operator= (const GeomVertexReader copy)
 
 output (Ostream out)
 
bool setColumn (const InternalName name)
 Sets up the reader to use the data type with the indicated name. More...
 
bool setColumn (int column)
 Sets up the reader to use the nth data type of the GeomVertexFormat, numbering from 0. More...
 
bool setColumn (int array, const GeomVertexColumn column)
 Sets up the reader to use the indicated column description on the given array. More...
 
 setForce (bool force)
 Sets the value of the force flag. More...
 
 setRow (int row)
 Sets the start row to the indicated value. More...
 
 setRowUnsafe (int row)
 Sets the start row to the indicated value, without internal checks. More...
 

Additional Inherited Members

- Public Types inherited from GeomEnums
enum  AnimationType { AT_none = 0, AT_panda = 1, AT_hardware = 2 }
 
enum  Contents {
  C_other = 0, C_point = 1, C_clip_point = 2, C_vector = 3,
  C_texcoord = 4, C_color = 5, C_index = 6, C_morph_delta = 7,
  C_matrix = 8, C_normal = 9
}
 
enum  GeomRendering {
  GR_indexed_point = 1, GR_indexed_other = 65536, GR_indexed_bits = 65537, GR_point = 2,
  GR_point_uniform_size = 4, GR_per_point_size = 8, GR_point_perspective = 16, GR_point_aspect_ratio = 32,
  GR_point_scale = 64, GR_point_rotate = 128, GR_point_sprite = 256, GR_point_sprite_tex_matrix = 512,
  GR_point_bits = 1022, GR_triangle_strip = 1024, GR_triangle_fan = 2048, GR_line_strip = 4096,
  GR_composite_bits = 7168, GR_strip_cut_index = 131072, GR_flat_first_vertex = 8192, GR_flat_last_vertex = 16384,
  GR_shade_model_bits = 24576, GR_render_mode_wireframe = 262144, GR_render_mode_point = 524288, GR_adjacency = 1048576
}
 
enum  NumericType {
  NT_uint8 = 0, NT_uint16 = 1, NT_uint32 = 2, NT_packed_dcba = 3,
  NT_packed_dabc = 4, NT_float32 = 5, NT_float64 = 6, NT_stdfloat = 7,
  NT_int8 = 8, NT_int16 = 9, NT_int32 = 10, NT_packed_ufloat = 11
}
 
enum  PrimitiveType {
  PT_none = 0, PT_polygons = 1, PT_lines = 2, PT_points = 3,
  PT_patches = 4
}
 
enum  ShadeModel { SM_uniform = 0, SM_smooth = 1, SM_flat_first_vertex = 2, SM_flat_last_vertex = 3 }
 
enum  UsageHint {
  UH_client = 0, UH_stream = 1, UH_dynamic = 2, UH_static = 3,
  UH_unspecified = 4
}
 

Detailed Description

This object provides the functionality of both a GeomVertexReader and a GeomVertexWriter, combined together into one convenient package.

It is designed for making a single pass over a GeomVertexData object, modifying rows as it goes.

Although it doesn't provide any real performance benefit over using a separate reader and writer on the same data, it should probably be used in preference to a separate reader and writer, because it makes an effort to manage the reference counts properly between the reader and the writer to avoid accidentally dereferencing either array while recopying.

Member Function Documentation

◆ __init__() [1/6]

__init__ ( GeomVertexArrayData  array_data,
Thread  current_thread 
)

Constructs a new rewriter to process the vertices of the indicated array only.

◆ __init__() [2/6]

__init__ ( GeomVertexArrayData  array_data,
int  column,
Thread  current_thread 
)

Constructs a new rewriter to process the vertices of the indicated array only.

◆ __init__() [3/6]

__init__ ( GeomVertexData  vertex_data,
const InternalName  name,
Thread  current_thread 
)

Constructs a new rewriter to process the vertices of the indicated data object.

This flavor creates the rewriter specifically to process the named data type.

◆ __init__() [4/6]

__init__ ( GeomVertexData  vertex_data,
Thread  current_thread 
)

Constructs a new rewriter to process the vertices of the indicated data object.

◆ __init__() [5/6]

__init__ ( const GeomVertexRewriter  copy)

◆ __init__() [6/6]

__init__ ( Thread  current_thread)

Constructs an invalid GeomVertexRewriter.

You must use the assignment operator to assign a valid GeomVertexRewriter to this object before you can use it.

◆ clear()

clear ( )

Resets the GeomVertexRewriter to the initial state.

◆ getArray()

int getArray ( )

Returns the array index containing the data type that the rewriter is working on.

◆ getArrayData()

GeomVertexArrayData getArrayData ( )

Returns the particular array object that the rewriter is currently processing.

◆ getArrayHandle()

GeomVertexArrayDataHandle getArrayHandle ( )

Returns the write handle to the array object that the rewriter is currently processing.

This low-level call should be used with caution; be careful with modifying the data in the handle out from under the GeomVertexRewriter.

◆ getColumn()

const GeomVertexColumn getColumn ( )

Returns the description of the data type that the rewriter is working on.

◆ getCurrentThread()

Thread getCurrentThread ( )

Returns the Thread pointer of the currently-executing thread, as passed to the constructor of this object.

◆ getStartRow()

int getStartRow ( )

Returns the row index at which the rewriter started.

It will return to this row if you reset the current column.

◆ getStride()

int getStride ( )

Returns the per-row stride (bytes between consecutive rows) of the underlying vertex array.

This low-level information is normally not needed to use the GeomVertexRewriter directly.

◆ getVertexData()

GeomVertexData getVertexData ( )

Returns the vertex data object that the rewriter is processing.

◆ hasColumn()

bool hasColumn ( )

Returns true if a valid data type has been successfully set, or false if the data type does not exist.

◆ isAtEnd()

bool isAtEnd ( )

Returns true if the reader or writer is currently at the end of the list of vertices, false otherwise.

◆ operator=()

GeomVertexRewriter operator= ( const GeomVertexRewriter  copy)

◆ output()

output ( Ostream  out)

◆ setColumn() [1/3]

bool setColumn ( const InternalName  name)

Sets up the rewriter to use the data type with the indicated name.

This also resets both the read and write row numbers to the start row (the same value passed to a previous call to set_row(), or 0 if set_row() was never called.)

The return value is true if the data type is valid, false otherwise.

◆ setColumn() [2/3]

bool setColumn ( int  column)

Sets up the rewriter to use the nth data type of the GeomVertexFormat, numbering from 0.

This also resets both the read and write row numbers to the start row (the same value passed to a previous call to set_row(), or 0 if set_row() was never called.)

The return value is true if the data type is valid, false otherwise.

◆ setColumn() [3/3]

bool setColumn ( int  array,
const GeomVertexColumn  column 
)

Sets up the rewriter to use the indicated column description on the given array.

This also resets both the read and write row numbers to the start row (the same value passed to a previous call to set_row(), or 0 if set_row() was never called.)

The return value is true if the data type is valid, false otherwise.

◆ setRow()

setRow ( int  row)

Sets the start, write, and write index to the indicated value.

The rewriter will begin traversing from the given row.

◆ setRowUnsafe()

setRowUnsafe ( int  row)

Sets the start row to the indicated value, without internal checks.

This is the same as set_row(), but it does not check for the possibility that the array has been reallocated internally for some reason; use only when you are confident that the array is unchanged and you really need every bit of available performance.