/usr/include/saga_api/grid.h is in libsaga-dev 2.3.1+dfsg-3.
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* Version $Id$
*********************************************************/
///////////////////////////////////////////////////////////
// //
// SAGA //
// //
// System for Automated Geoscientific Analyses //
// //
// Application Programming Interface //
// //
// Library: SAGA_API //
// //
//-------------------------------------------------------//
// //
// grid.h //
// //
// Copyright (C) 2005 by Olaf Conrad //
// //
//-------------------------------------------------------//
// //
// This file is part of 'SAGA - System for Automated //
// Geoscientific Analyses'. //
// //
// This library is free software; you can redistribute //
// it and/or modify it under the terms of the GNU Lesser //
// General Public License as published by the Free //
// Software Foundation, version 2.1 of the License. //
// //
// This library is distributed in the hope that it will //
// be useful, but WITHOUT ANY WARRANTY; without even the //
// implied warranty of MERCHANTABILITY or FITNESS FOR A //
// PARTICULAR PURPOSE. See the GNU Lesser General Public //
// License for more details. //
// //
// You should have received a copy of the GNU Lesser //
// General Public License along with this program; if //
// not, write to the Free Software Foundation, Inc., //
// 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, //
// USA. //
// //
//-------------------------------------------------------//
// //
// contact: Olaf Conrad //
// Institute of Geography //
// University of Goettingen //
// Goldschmidtstr. 5 //
// 37077 Goettingen //
// Germany //
// //
// e-mail: oconrad@saga-gis.org //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
#ifndef HEADER_INCLUDED__SAGA_API__grid_H
#define HEADER_INCLUDED__SAGA_API__grid_H
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
#include "table.h"
#include "grid_pyramid.h"
///////////////////////////////////////////////////////////
// //
// Memory Handling //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
typedef enum ESG_Grid_Memory_Type
{
GRID_MEMORY_Normal = 0,
GRID_MEMORY_Cache,
GRID_MEMORY_Compression
}
TSG_Grid_Memory_Type;
///////////////////////////////////////////////////////////
// //
// Grid File //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
typedef enum ESG_Grid_File_Format
{
GRID_FILE_FORMAT_Undefined = 0,
GRID_FILE_FORMAT_Binary,
GRID_FILE_FORMAT_ASCII
}
TSG_Grid_File_Format;
//---------------------------------------------------------
typedef enum ESG_Grid_File_Key
{
GRID_FILE_KEY_NAME = 0,
GRID_FILE_KEY_DESCRIPTION,
GRID_FILE_KEY_UNITNAME,
GRID_FILE_KEY_DATAFILE_NAME,
GRID_FILE_KEY_DATAFILE_OFFSET,
GRID_FILE_KEY_DATAFORMAT,
GRID_FILE_KEY_BYTEORDER_BIG,
GRID_FILE_KEY_POSITION_XMIN,
GRID_FILE_KEY_POSITION_YMIN,
GRID_FILE_KEY_CELLCOUNT_X,
GRID_FILE_KEY_CELLCOUNT_Y,
GRID_FILE_KEY_CELLSIZE,
GRID_FILE_KEY_Z_FACTOR,
GRID_FILE_KEY_Z_OFFSET,
GRID_FILE_KEY_NODATA_VALUE,
GRID_FILE_KEY_TOPTOBOTTOM,
GRID_FILE_KEY_Count
}
TSG_Grid_File_Key;
//---------------------------------------------------------
const SG_Char gSG_Grid_File_Key_Names[GRID_FILE_KEY_Count][32] =
{
SG_T("NAME"),
SG_T("DESCRIPTION"),
SG_T("UNIT"),
SG_T("DATAFILE_NAME"),
SG_T("DATAFILE_OFFSET"),
SG_T("DATAFORMAT"),
SG_T("BYTEORDER_BIG"),
SG_T("POSITION_XMIN"),
SG_T("POSITION_YMIN"),
SG_T("CELLCOUNT_X"),
SG_T("CELLCOUNT_Y"),
SG_T("CELLSIZE"),
SG_T("Z_FACTOR"),
SG_T("Z_OFFSET"),
SG_T("NODATA_VALUE"),
SG_T("TOPTOBOTTOM")
};
//---------------------------------------------------------
#define GRID_FILE_KEY_TRUE SG_T("TRUE")
#define GRID_FILE_KEY_FALSE SG_T("FALSE")
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
typedef enum ESG_Grid_Resampling
{
GRID_RESAMPLING_NearestNeighbour = 0,
GRID_RESAMPLING_Bilinear,
GRID_RESAMPLING_BicubicSpline,
GRID_RESAMPLING_BSpline,
GRID_RESAMPLING_Mean_Nodes,
GRID_RESAMPLING_Mean_Cells,
GRID_RESAMPLING_Minimum,
GRID_RESAMPLING_Maximum,
GRID_RESAMPLING_Majority,
GRID_RESAMPLING_Undefined
}
TSG_Grid_Resampling;
//---------------------------------------------------------
typedef enum ESG_Grid_Operation
{
GRID_OPERATION_Addition = 0,
GRID_OPERATION_Subtraction,
GRID_OPERATION_Multiplication,
GRID_OPERATION_Division
}
TSG_Grid_Operation;
///////////////////////////////////////////////////////////
// //
// CSG_Grid_System //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
/**
* CSG_Grid_System is used by the CSG_Grid class to provide
* information about the number of rows and columns, the
* cell size and the georeference, which define the grid.
* It offers various functions, which help when working
* with grids.
* @see CSG_Grid
*/
//---------------------------------------------------------
class SAGA_API_DLL_EXPORT CSG_Grid_System
{
public:
CSG_Grid_System(void);
CSG_Grid_System(const CSG_Grid_System &System);
CSG_Grid_System(double Cellsize, const CSG_Rect &Extent);
CSG_Grid_System(double Cellsize, double xMin, double yMin, double xMax, double yMax);
CSG_Grid_System(double Cellsize, double xMin, double yMin, int NX, int NY);
~CSG_Grid_System(void);
//-----------------------------------------------------
bool is_Valid (void) const;
const SG_Char * Get_Name (bool bShort = true);
double Get_Cellsize (void) const { return( m_Cellsize ); }
double Get_Cellarea (void) const { return( m_Cellarea ); }
int Get_NX (void) const { return( m_NX ); }
int Get_NY (void) const { return( m_NY ); }
sLong Get_NCells (void) const { return( m_NCells ); }
const CSG_Rect & Get_Extent (bool bCells = false) const { return( bCells ? m_Extent_Cells : m_Extent ); }
double Get_XMin (bool bCells = false) const { return( bCells ? m_Extent_Cells.Get_XMin () : m_Extent.Get_XMin () ); }
double Get_XMax (bool bCells = false) const { return( bCells ? m_Extent_Cells.Get_XMax () : m_Extent.Get_XMax () ); }
double Get_XRange (bool bCells = false) const { return( bCells ? m_Extent_Cells.Get_XRange() : m_Extent.Get_XRange() ); }
double Get_YMin (bool bCells = false) const { return( bCells ? m_Extent_Cells.Get_YMin () : m_Extent.Get_YMin () ); }
double Get_YMax (bool bCells = false) const { return( bCells ? m_Extent_Cells.Get_YMax () : m_Extent.Get_YMax () ); }
double Get_YRange (bool bCells = false) const { return( bCells ? m_Extent_Cells.Get_YRange() : m_Extent.Get_YRange() ); }
//-----------------------------------------------------
bool operator == (const CSG_Grid_System &System) const;
void operator = (const CSG_Grid_System &System);
bool Assign (const CSG_Grid_System &System);
bool Assign (double Cellsize, const CSG_Rect &Extent);
bool Assign (double Cellsize, double xMin, double yMin, double xMax, double yMax);
bool Assign (double Cellsize, double xMin, double yMin, int NX, int NY);
bool is_Equal (const CSG_Grid_System &System) const;
bool is_Equal (double Cellsize, const TSG_Rect &Extent) const;
//-----------------------------------------------------
/// Aligns the world coordinate x to the rows of the grid system and returns it.
double Fit_xto_Grid_System (double x) const { return( Get_XMin() + m_Cellsize * (int)(0.5 + (x - Get_XMin()) / m_Cellsize) ); }
/// Aligns the world coordinate y to the columns of the grid system and returns it.
double Fit_yto_Grid_System (double y) const { return( Get_YMin() + m_Cellsize * (int)(0.5 + (y - Get_YMin()) / m_Cellsize) ); }
/// Aligns the world coordinate ptWorld to the rows and columns of the grid system and returns it.
TSG_Point Fit_to_Grid_System (TSG_Point ptWorld) const
{
ptWorld.x = Fit_xto_Grid_System(ptWorld.x);
ptWorld.y = Fit_yto_Grid_System(ptWorld.y);
return( ptWorld );
}
//-----------------------------------------------------
double Get_xGrid_to_World (int xGrid) const { return( Get_XMin() + xGrid * m_Cellsize ); }
double Get_yGrid_to_World (int yGrid) const { return( Get_YMin() + yGrid * m_Cellsize ); }
TSG_Point Get_Grid_to_World (int xGrid, int yGrid) const
{
TSG_Point pt;
pt.x = Get_xGrid_to_World(xGrid);
pt.y = Get_yGrid_to_World(yGrid);
return( pt );
}
//-----------------------------------------------------
int Get_xWorld_to_Grid (double xWorld) const { return( (int)(0.5 + (xWorld - Get_XMin()) / m_Cellsize) ); }
int Get_yWorld_to_Grid (double yWorld) const { return( (int)(0.5 + (yWorld - Get_YMin()) / m_Cellsize) ); }
bool Get_World_to_Grid (int &xGrid, int &yGrid, double xWorld, double yWorld) const
{
return( is_InGrid(xGrid = Get_xWorld_to_Grid(xWorld), yGrid = Get_yWorld_to_Grid(yWorld)) );
}
bool Get_World_to_Grid (int &xGrid, int &yGrid, TSG_Point ptWorld) const
{
return( is_InGrid(xGrid = Get_xWorld_to_Grid(ptWorld.x), yGrid = Get_yWorld_to_Grid(ptWorld.y)) );
}
//-----------------------------------------------------
bool Get_Neighbor_Pos (int Direction, int x, int y, int &xPos, int &yPos) const
{
return( is_InGrid(xPos = Get_xTo(Direction, x), yPos = Get_yTo(Direction, y)) );
}
static int Get_xTo (int Direction, int x = 0)
{
static int ix[8] = { 0, 1, 1, 1, 0,-1,-1,-1 };
Direction %= 8;
if( Direction < 0 )
{
Direction += 8;
}
return( x + ix[Direction] );
}
static int Get_yTo (int Direction, int y = 0)
{
static int iy[8] = { 1, 1, 0,-1,-1,-1, 0, 1 };
Direction %= 8;
if( Direction < 0 )
{
Direction += 8;
}
return( y + iy[Direction] );
}
static int Get_xFrom (int Direction, int x = 0) { return( Get_xTo(Direction + 4, x) ); }
static int Get_yFrom (int Direction, int y = 0) { return( Get_yTo(Direction + 4, y) ); }
int Get_xToSave (int Direction, int x) const { return( (x = Get_xTo (Direction, x)) < 0 ? 0 : (x >= m_NX ? m_NX - 1 : x) ); }
int Get_yToSave (int Direction, int y) const { return( (y = Get_yTo (Direction, y)) < 0 ? 0 : (y >= m_NY ? m_NY - 1 : y) ); }
int Get_xFromSave (int Direction, int x) const { return( (x = Get_xFrom(Direction, x)) < 0 ? 0 : (x >= m_NX ? m_NX - 1 : x) ); }
int Get_yFromSave (int Direction, int y) const { return( (y = Get_yFrom(Direction, y)) < 0 ? 0 : (y >= m_NY ? m_NY - 1 : y) ); }
bool is_InGrid (int x, int y) const { return( x >= 0 && x < m_NX && y >= 0 && y < m_NY ); }
bool is_InGrid (int x, int y, int Rand) const { return( x >= Rand && x < m_NX - Rand && y >= Rand && y < m_NY - Rand ); }
double Get_Length (int Direction) const { return( Direction % 2 ? m_Diagonal : m_Cellsize ); }
static double Get_UnitLength (int Direction) { return( Direction % 2 ? sqrt(2.0) : 1.0 ); }
private: ///////////////////////////////////////////////
int m_NX, m_NY;
sLong m_NCells;
double m_Cellsize, m_Cellarea, m_Diagonal;
CSG_Rect m_Extent, m_Extent_Cells;
CSG_String m_Name;
};
///////////////////////////////////////////////////////////
// //
// CSG_Grid //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
/**
* CSG_Grid is the data object created for raster handling.
*/
//---------------------------------------------------------
class SAGA_API_DLL_EXPORT CSG_Grid_File_Info
{
//---------------------------------------------------------
public: ///////////////////////////////////////////////
//-----------------------------------------------------
CSG_Grid_File_Info(void);
CSG_Grid_File_Info (const CSG_Grid_File_Info &Info);
bool Create (const CSG_Grid_File_Info &Info);
CSG_Grid_File_Info (const CSG_String &File_Name);
bool Create (const CSG_String &File_Name);
CSG_Grid_File_Info (const CSG_Grid &Grid);
bool Create (const CSG_Grid &Grid);
bool Save (const CSG_String &File_Name , bool bBinary = true);
bool Save (const CSG_String &File_Name , int xStart, int yStart, int xCount, int yCount, bool bBinary = true);
static bool Save (const CSG_String &File_Name, const CSG_Grid &Grid , bool bBinary = true);
static bool Save (const CSG_String &File_Name, const CSG_Grid &Grid, int xStart, int yStart, int xCount, int yCount, bool bBinary = true);
//-----------------------------------------------------
bool m_bFlip, m_bSwapBytes;
sLong m_Offset;
double m_zScale, m_zOffset, m_NoData;
TSG_Data_Type m_Type;
CSG_String m_Name, m_Description, m_Unit, m_Data_File;
CSG_Grid_System m_System;
CSG_Projection m_Projection;
private:
void _On_Construction (void);
int _Get_Key (CSG_File &Stream, CSG_String &Line);
};
///////////////////////////////////////////////////////////
// //
// CSG_Grid //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
/**
* CSG_Grid is the data object created for raster handling.
*/
//---------------------------------------------------------
class SAGA_API_DLL_EXPORT CSG_Grid : public CSG_Data_Object
{
//---------------------------------------------------------
public: ///////////////////////////////////////////////
//-----------------------------------------------------
CSG_Grid(void);
CSG_Grid (const CSG_Grid &Grid);
bool Create (const CSG_Grid &Grid);
CSG_Grid (const CSG_String &File_Name, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal, bool bLoadData = true);
bool Create (const CSG_String &File_Name, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal, bool bLoadData = true);
CSG_Grid (CSG_Grid *pGrid, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
bool Create (CSG_Grid *pGrid, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
CSG_Grid (const CSG_Grid_System &System, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
bool Create (const CSG_Grid_System &System, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
CSG_Grid (TSG_Data_Type Type, int NX, int NY, double Cellsize = 0.0, double xMin = 0.0, double yMin = 0.0, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
bool Create (TSG_Data_Type Type, int NX, int NY, double Cellsize = 0.0, double xMin = 0.0, double yMin = 0.0, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
//-----------------------------------------------------
virtual ~CSG_Grid(void);
virtual bool Destroy (void);
//-----------------------------------------------------
/** Data object type information.
*/
virtual TSG_Data_Object_Type Get_ObjectType (void) const { return( DATAOBJECT_TYPE_Grid ); }
//-----------------------------------------------------
// Data-Info...
TSG_Data_Type Get_Type (void) const { return( m_Type ); }
int Get_nValueBytes (void) const { return( (int)SG_Data_Type_Get_Size(m_Type) ); }
int Get_nLineBytes (void) const { return( m_Type != SG_DATATYPE_Bit ? (int)SG_Data_Type_Get_Size(m_Type) * Get_NX() : 1 + Get_NX() / 8 ); }
void Set_Unit (const SG_Char *String);
const SG_Char * Get_Unit (void) const;
const CSG_Grid_System & Get_System (void) const { return( m_System ); }
int Get_NX (void) const { return( m_System.Get_NX() ); }
int Get_NY (void) const { return( m_System.Get_NY() ); }
sLong Get_NCells (void) const { return( m_System.Get_NCells() ); }
double Get_Cellsize (void) const { return( m_System.Get_Cellsize() ); }
double Get_Cellarea (void) const { return( m_System.Get_Cellarea() ); }
const CSG_Rect & Get_Extent (bool bCells = false) const { return( m_System.Get_Extent(bCells) ); }
double Get_XMin (bool bCells = false) const { return( m_System.Get_XMin (bCells) ); }
double Get_XMax (bool bCells = false) const { return( m_System.Get_XMax (bCells) ); }
double Get_XRange (bool bCells = false) const { return( m_System.Get_XRange(bCells) ); }
double Get_YMin (bool bCells = false) const { return( m_System.Get_YMin (bCells) ); }
double Get_YMax (bool bCells = false) const { return( m_System.Get_YMax (bCells) ); }
double Get_YRange (bool bCells = false) const { return( m_System.Get_YRange(bCells) ); }
double Get_ZMin (void);
double Get_ZMax (void);
double Get_ZRange (void);
void Set_Scaling (double Scale = 1.0, double Offset = 0.0);
double Get_Scaling (void) const;
double Get_Offset (void) const;
bool is_Scaled (void) const { return( m_zScale != 1.0 || m_zOffset != 0.0 ); }
double Get_Mean (void);
double Get_StdDev (void);
double Get_Variance (void);
double Get_Percentile (double Percent);
sLong Get_Data_Count (void);
sLong Get_NoData_Count(void);
virtual bool Save (const CSG_String &File_Name, int Format = GRID_FILE_FORMAT_Binary);
virtual bool Save (const CSG_String &File_Name, int Format, int xA, int yA, int xN, int yN);
//-----------------------------------------------------
// Checks...
virtual bool is_Valid (void) const;
TSG_Intersection is_Intersecting (const CSG_Rect &Extent) const;
TSG_Intersection is_Intersecting (const TSG_Rect &Extent) const;
TSG_Intersection is_Intersecting (double xMin, double yMin, double xMax, double yMax) const;
bool is_Compatible (CSG_Grid *pGrid) const;
bool is_Compatible (const CSG_Grid_System &System) const;
bool is_Compatible (int NX, int NY, double Cellsize, double xMin, double yMin) const;
bool is_InGrid (int x, int y, bool bCheckNoData = true) const { return( m_System.is_InGrid(x, y) && (!bCheckNoData || !is_NoData(x, y)) ); }
bool is_InGrid_byPos (double x, double y, bool bCheckNoData = true) const { return( x >= Get_XMin() && x <= Get_XMax() && y >= Get_YMin() && y <= Get_YMax() && (!bCheckNoData || !is_NoData(m_System.Get_xWorld_to_Grid(x), m_System.Get_yWorld_to_Grid(y))) ); }
bool is_InGrid_byPos (TSG_Point Position, bool bCheckNoData = true) const { return( is_InGrid_byPos(Position.x, Position.y, bCheckNoData) ); }
//-----------------------------------------------------
// Memory...
sLong Get_Memory_Size (void) const { return( Get_NCells() * Get_nValueBytes() ); }
double Get_Memory_Size_MB (void) const { return( (double)Get_Memory_Size() / N_MEGABYTE_BYTES ); }
bool Set_Buffer_Size (sLong nBytes);
int Get_Buffer_Size (void) const { return( m_LineBuffer_Count * Get_nLineBytes() ); }
bool Set_Cache (bool bOn);
bool is_Cached (void) const { return( m_Memory_Type == GRID_MEMORY_Cache ); }
bool Set_Compression (bool bOn);
bool is_Compressed (void) const { return( m_Memory_Type == GRID_MEMORY_Compression ); };
double Get_Compression_Ratio (void) const;
//-----------------------------------------------------
// Operations...
void Assign_NoData (void);
virtual bool Assign (double Value = 0.0);
virtual bool Assign (CSG_Data_Object *pObject);
virtual bool Assign (CSG_Grid *pGrid, TSG_Grid_Resampling Interpolation);
void Flip (void);
void Mirror (void);
void Invert (void);
bool Normalise (void);
bool DeNormalise (double Minimum, double Maximum);
bool Standardise (void);
bool DeStandardise (double Mean, double StdDev);
int Get_Gradient_NeighborDir (int x, int y, bool bDown = true, bool bNoEdges = true) const;
bool Get_Gradient (int x, int y, double &Incline, double &Azimuth) const;
//-----------------------------------------------------
// Set update flag when modified...
virtual void Set_Modified (bool bOn = true)
{
CSG_Data_Object::Set_Modified(bOn);
if( bOn )
{
Set_Update_Flag();
Set_Index(false);
}
}
//-----------------------------------------------------
// Index...
bool Set_Index (bool bOn = true)
{
if( !bOn )
{
m_bIndex = false;
return( true );
}
return( m_bIndex || _Set_Index() );
}
sLong Get_Sorted (sLong Position, bool bDown = true, bool bCheckNoData = true)
{
if( Position >= 0 && Position < Get_NCells() && (m_bIndex || _Set_Index()) )
{
Position = m_Index[bDown ? Get_NCells() - Position - 1 : Position];
if( !bCheckNoData || !is_NoData(Position) )
{
return( Position );
}
}
return( -1 );
}
bool Get_Sorted (sLong Position, sLong &n, bool bDown = true, bool bCheckNoData = true)
{
return( (n = Get_Sorted(Position, bDown, false)) >= 0 && (!bCheckNoData || !is_NoData(n)) );
}
bool Get_Sorted (sLong Position, int &x, int &y, bool bDown = true, bool bCheckNoData = true)
{
if( (Position = Get_Sorted(Position, bDown, false)) >= 0 )
{
x = (int)(Position % Get_NX());
y = (int)(Position / Get_NX());
return( !bCheckNoData || !is_NoData(x, y) );
}
return( false );
}
//-----------------------------------------------------
// No Data Value...
virtual bool is_NoData (int x, int y) const { return( is_NoData_Value(asDouble(x, y, false)) ); }
virtual bool is_NoData (sLong n) const { return( is_NoData_Value(asDouble( n, false)) ); }
virtual void Set_NoData (int x, int y) { Set_Value(x, y, Get_NoData_Value(), false); }
virtual void Set_NoData (sLong n) { Set_Value( n, Get_NoData_Value(), false); }
//-----------------------------------------------------
// Operators...
virtual CSG_Grid & operator = (const CSG_Grid &Grid);
virtual CSG_Grid & operator = (double Value);
virtual CSG_Grid operator + (const CSG_Grid &Grid) const;
virtual CSG_Grid operator + (double Value) const;
virtual CSG_Grid & operator += (const CSG_Grid &Grid);
virtual CSG_Grid & operator += (double Value);
virtual CSG_Grid & Add (const CSG_Grid &Grid);
virtual CSG_Grid & Add (double Value);
virtual CSG_Grid operator - (const CSG_Grid &Grid) const;
virtual CSG_Grid operator - (double Value) const;
virtual CSG_Grid & operator -= (const CSG_Grid &Grid);
virtual CSG_Grid & operator -= (double Value);
virtual CSG_Grid & Subtract (const CSG_Grid &Grid);
virtual CSG_Grid & Subtract (double Value);
virtual CSG_Grid operator * (const CSG_Grid &Grid) const;
virtual CSG_Grid operator * (double Value) const;
virtual CSG_Grid & operator *= (const CSG_Grid &Grid);
virtual CSG_Grid & operator *= (double Value);
virtual CSG_Grid & Multiply (const CSG_Grid &Grid);
virtual CSG_Grid & Multiply (double Value);
virtual CSG_Grid operator / (const CSG_Grid &Grid) const;
virtual CSG_Grid operator / (double Value) const;
virtual CSG_Grid & operator /= (const CSG_Grid &Grid);
virtual CSG_Grid & operator /= (double Value);
virtual CSG_Grid & Divide (const CSG_Grid &Grid);
virtual CSG_Grid & Divide (double Value);
virtual double operator () (int x, int y) const { return( asDouble(x, y) ); }
//-----------------------------------------------------
// Get Value...
double Get_Value(double xPos, double yPos, TSG_Grid_Resampling Resampling = GRID_RESAMPLING_BSpline, bool bByteWise = false, bool bOnlyValidCells = false) const;
double Get_Value(TSG_Point Position , TSG_Grid_Resampling Resampling = GRID_RESAMPLING_BSpline, bool bByteWise = false, bool bOnlyValidCells = false) const;
bool Get_Value(double xPos, double yPos, double &Value, TSG_Grid_Resampling Resampling = GRID_RESAMPLING_BSpline, bool bByteWise = false, bool bOnlyValidCells = false) const;
bool Get_Value(TSG_Point Position , double &Value, TSG_Grid_Resampling Resampling = GRID_RESAMPLING_BSpline, bool bByteWise = false, bool bOnlyValidCells = false) const;
virtual BYTE asByte (int x, int y, bool bScaled = true) const { return( SG_ROUND_TO_BYTE (asDouble(x, y, bScaled)) ); }
virtual BYTE asByte ( sLong n, bool bScaled = true) const { return( SG_ROUND_TO_BYTE (asDouble( n, bScaled)) ); }
virtual char asChar (int x, int y, bool bScaled = true) const { return( SG_ROUND_TO_CHAR (asDouble(x, y, bScaled)) ); }
virtual char asChar ( sLong n, bool bScaled = true) const { return( SG_ROUND_TO_CHAR (asDouble( n, bScaled)) ); }
virtual short asShort (int x, int y, bool bScaled = true) const { return( SG_ROUND_TO_SHORT(asDouble(x, y, bScaled)) ); }
virtual short asShort ( sLong n, bool bScaled = true) const { return( SG_ROUND_TO_SHORT(asDouble( n, bScaled)) ); }
virtual int asInt (int x, int y, bool bScaled = true) const { return( SG_ROUND_TO_INT (asDouble(x, y, bScaled)) ); }
virtual int asInt ( sLong n, bool bScaled = true) const { return( SG_ROUND_TO_INT (asDouble( n, bScaled)) ); }
virtual sLong asLong (int x, int y, bool bScaled = true) const { return( SG_ROUND_TO_SLONG(asDouble(x, y, bScaled)) ); }
virtual sLong asLong ( sLong n, bool bScaled = true) const { return( SG_ROUND_TO_SLONG(asDouble( n, bScaled)) ); }
virtual float asFloat (int x, int y, bool bScaled = true) const { return( (float) (asDouble(x, y, bScaled)) ); }
virtual float asFloat ( sLong n, bool bScaled = true) const { return( (float) (asDouble( n, bScaled)) ); }
//-----------------------------------------------------
virtual double asDouble( sLong n, bool bScaled = true) const
{
return( asDouble((int)(n % Get_NX()), (int)(n / Get_NX()), bScaled) );
}
virtual double asDouble(int x, int y, bool bScaled = true) const
{
double Value;
if( m_Memory_Type != GRID_MEMORY_Normal )
{
Value = _LineBuffer_Get_Value(x, y);
}
else switch( m_Type )
{
default: return( 0.0 );
case SG_DATATYPE_Byte: Value = (double)((BYTE **)m_Values)[y][x]; break;
case SG_DATATYPE_Char: Value = (double)((char **)m_Values)[y][x]; break;
case SG_DATATYPE_Word: Value = (double)((WORD **)m_Values)[y][x]; break;
case SG_DATATYPE_Short: Value = (double)((short **)m_Values)[y][x]; break;
case SG_DATATYPE_DWord: Value = (double)((DWORD **)m_Values)[y][x]; break;
case SG_DATATYPE_Int: Value = (double)((int **)m_Values)[y][x]; break;
case SG_DATATYPE_Long: Value = (double)((sLong **)m_Values)[y][x]; break;
case SG_DATATYPE_Float: Value = (double)((float **)m_Values)[y][x]; break;
case SG_DATATYPE_Double: Value = (double)((double **)m_Values)[y][x]; break;
case SG_DATATYPE_Bit: Value =(double)(((BYTE **)m_Values)[y][x / 8] & m_Bitmask[x % 8]) == 0 ? 0.0 : 1.0; break;
}
if( bScaled && is_Scaled() )
{
Value = m_zOffset + m_zScale * Value;
}
return( Value );
}
//-----------------------------------------------------
// Set Value...
virtual void Add_Value(int x, int y, double Value) { Set_Value(x, y, asDouble(x, y) + Value ); }
virtual void Add_Value( sLong n, double Value) { Set_Value( n, asDouble( n) + Value ); }
virtual void Mul_Value(int x, int y, double Value) { Set_Value(x, y, asDouble(x, y) * Value ); }
virtual void Mul_Value( sLong n, double Value) { Set_Value( n, asDouble( n) * Value ); }
//-----------------------------------------------------
virtual void Set_Value( sLong n, double Value, bool bScaled = true)
{
Set_Value((int)(n % Get_NX()), (int)(n / Get_NX()), Value, bScaled);
}
virtual void Set_Value(int x, int y, double Value, bool bScaled = true)
{
if( bScaled && is_Scaled() )
{
Value = (Value - m_zOffset) / m_zScale;
}
if( m_Memory_Type != GRID_MEMORY_Normal )
{
_LineBuffer_Set_Value(x, y, Value);
}
else switch( m_Type )
{
default: return;
case SG_DATATYPE_Byte: ((BYTE **)m_Values)[y][x] = SG_ROUND_TO_BYTE (Value); break;
case SG_DATATYPE_Char: ((char **)m_Values)[y][x] = SG_ROUND_TO_CHAR (Value); break;
case SG_DATATYPE_Word: ((WORD **)m_Values)[y][x] = SG_ROUND_TO_WORD (Value); break;
case SG_DATATYPE_Short: ((short **)m_Values)[y][x] = SG_ROUND_TO_SHORT(Value); break;
case SG_DATATYPE_DWord: ((DWORD **)m_Values)[y][x] = SG_ROUND_TO_DWORD(Value); break;
case SG_DATATYPE_Int: ((int **)m_Values)[y][x] = SG_ROUND_TO_INT (Value); break;
case SG_DATATYPE_Long: ((sLong **)m_Values)[y][x] = SG_ROUND_TO_SLONG(Value); break;
case SG_DATATYPE_Float: ((float **)m_Values)[y][x] = (float )Value; break;
case SG_DATATYPE_Double: ((double **)m_Values)[y][x] = (double)Value; break;
case SG_DATATYPE_Bit: ((BYTE **)m_Values)[y][x / 8] = Value != 0.0
? ((BYTE **)m_Values)[y][x / 8] | m_Bitmask[x % 8]
: ((BYTE **)m_Values)[y][x / 8] & (~m_Bitmask[x % 8]);
break;
}
Set_Modified();
}
//---------------------------------------------------------
protected: ///////////////////////////////////////////////
virtual bool On_Update (void);
//---------------------------------------------------------
private: ///////////////////////////////////////////////
void **m_Values;
bool m_bCreated, m_bIndex, m_Memory_bLock,
m_Cache_bTemp, m_Cache_bSwap, m_Cache_bFlip;
int m_LineBuffer_Count;
sLong *m_Index, m_Cache_Offset;
double m_zOffset, m_zScale;
CSG_Simple_Statistics m_zStats;
CSG_File m_Cache_Stream;
TSG_Data_Type m_Type;
TSG_Grid_Memory_Type m_Memory_Type;
CSG_Grid_System m_System;
CSG_String m_Unit, m_Cache_Path;
//-----------------------------------------------------
static BYTE m_Bitmask[8];
//-----------------------------------------------------
typedef struct
{
bool bModified;
int y;
char *Data;
}
TSG_Grid_Line;
TSG_Grid_Line *m_LineBuffer;
//-----------------------------------------------------
void _On_Construction (void);
void _Set_Properties (TSG_Data_Type m_Type, int NX, int NY, double Cellsize, double xMin, double yMin);
bool _Set_Index (void);
//-----------------------------------------------------
// Memory handling...
int _Get_nLineBytes (void) { return( m_Type == SG_DATATYPE_Bit ? Get_NX() / 8 + 1 : Get_NX() * Get_nValueBytes() ); }
bool _Memory_Create (TSG_Grid_Memory_Type aMemory_Type);
void _Memory_Destroy (void);
void _LineBuffer_Create (void);
void _LineBuffer_Destroy (void);
void _LineBuffer_Flush (void);
TSG_Grid_Line * _LineBuffer_Get_Line (int y) const;
void _LineBuffer_Set_Value (int x, int y, double Value);
double _LineBuffer_Get_Value (int x, int y) const;
bool _Array_Create (void);
void _Array_Destroy (void);
bool _Cache_Create (const SG_Char *FilePath, TSG_Data_Type File_Type, sLong Offset, bool bSwap, bool bFlip);
bool _Cache_Create (void);
bool _Cache_Destroy (bool bMemory_Restore);
void _Cache_LineBuffer_Save (TSG_Grid_Line *pLine) const;
void _Cache_LineBuffer_Load (TSG_Grid_Line *pLine, int y) const;
bool _Compr_Create (void);
bool _Compr_Destroy (bool bMemory_Restore);
void _Compr_LineBuffer_Save (TSG_Grid_Line *pLine) const;
void _Compr_LineBuffer_Load (TSG_Grid_Line *pLine, int y) const;
//-----------------------------------------------------
// File access...
void _Swap_Bytes (char *Bytes, int nBytes) const;
bool _Load (const CSG_String &File_Name, TSG_Data_Type m_Type, TSG_Grid_Memory_Type aMemory_Type, bool bLoadData);
bool _Load_Binary (CSG_File &Stream, TSG_Data_Type File_Type, bool bFlip, bool bSwapBytes);
bool _Save_Binary (CSG_File &Stream, int xA, int yA, int xN, int yN, TSG_Data_Type File_Type, bool bFlip, bool bSwapBytes);
bool _Load_ASCII (CSG_File &Stream, TSG_Grid_Memory_Type aMemory_Type, bool bFlip = false);
bool _Save_ASCII (CSG_File &Stream, int xA, int yA, int xN, int yN, bool bFlip = false);
bool _Load_Native (const CSG_String &File_Name, TSG_Grid_Memory_Type aMemory_Type, bool bLoadData);
bool _Save_Native (const CSG_String &File_Name, int xA, int yA, int xN, int yN, bool bBinary = true);
bool _Load_Surfer (const CSG_String &File_Name, TSG_Grid_Memory_Type aMemory_Type, bool bLoadData);
//-----------------------------------------------------
CSG_Grid & _Operation_Arithmetic (const CSG_Grid &Grid, TSG_Grid_Operation Operation);
CSG_Grid & _Operation_Arithmetic (double Value , TSG_Grid_Operation Operation);
//-----------------------------------------------------
// Interpolation subroutines...
double _Get_ValAtPos_NearestNeighbour (int x, int y, double dx, double dy) const;
double _Get_ValAtPos_BiLinear (int x, int y, double dx, double dy, bool bByteWise) const;
double _Get_ValAtPos_InverseDistance (int x, int y, double dx, double dy, bool bByteWise) const;
double _Get_ValAtPos_BiCubicSpline (int x, int y, double dx, double dy, bool bByteWise) const;
double _Get_ValAtPos_BiCubicSpline (double dx, double dy, double z_xy[4][4]) const;
double _Get_ValAtPos_BSpline (int x, int y, double dx, double dy, bool bByteWise) const;
double _Get_ValAtPos_BSpline (double dx, double dy, double z_xy[4][4]) const;
bool _Get_ValAtPos_Fill4x4Submatrix (int x, int y, double z_xy[4][4]) const;
bool _Get_ValAtPos_Fill4x4Submatrix (int x, int y, double z_xy[4][4][4]) const;
bool _Assign_Interpolated (CSG_Grid *pSource, TSG_Grid_Resampling Interpolation);
bool _Assign_MeanValue (CSG_Grid *pSource, bool bAreaProportional);
bool _Assign_ExtremeValue (CSG_Grid *pSource, bool bMaximum);
bool _Assign_Majority (CSG_Grid *pSource);
};
///////////////////////////////////////////////////////////
// //
// Functions //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
#define SG_GRID_PTR_SAFE_SET_NODATA(g, x, y) { if( g && g->is_InGrid(x, y, false) ) { g->Set_NoData(x, y ); } }
#define SG_GRID_PTR_SAFE_SET_VALUE(g, x, y, z) { if( g && g->is_InGrid(x, y, false) ) { g->Set_Value (x, y, z); } }
//---------------------------------------------------------
/** Safe grid construction */
SAGA_API_DLL_EXPORT CSG_Grid * SG_Create_Grid (void);
/** Safe grid construction */
SAGA_API_DLL_EXPORT CSG_Grid * SG_Create_Grid (const CSG_Grid &Grid);
/** Safe grid construction */
SAGA_API_DLL_EXPORT CSG_Grid * SG_Create_Grid (const CSG_String &File_Name, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal, bool bLoadData = true);
/** Safe grid construction */
SAGA_API_DLL_EXPORT CSG_Grid * SG_Create_Grid (CSG_Grid *pGrid, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
/** Safe grid construction */
SAGA_API_DLL_EXPORT CSG_Grid * SG_Create_Grid (const CSG_Grid_System &System, TSG_Data_Type Type = SG_DATATYPE_Undefined, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
/** Safe grid construction */
SAGA_API_DLL_EXPORT CSG_Grid * SG_Create_Grid (TSG_Data_Type Type, int NX, int NY, double Cellsize = 0.0, double xMin = 0.0, double yMin = 0.0, TSG_Grid_Memory_Type Memory_Type = GRID_MEMORY_Normal);
//---------------------------------------------------------
/** Get default directory for grid caching */
SAGA_API_DLL_EXPORT const SG_Char * SG_Grid_Cache_Get_Directory (void);
/** Set default directory for grid caching */
SAGA_API_DLL_EXPORT void SG_Grid_Cache_Set_Directory (const SG_Char *Directory);
SAGA_API_DLL_EXPORT void SG_Grid_Cache_Set_Automatic (bool bOn);
SAGA_API_DLL_EXPORT bool SG_Grid_Cache_Get_Automatic (void);
SAGA_API_DLL_EXPORT void SG_Grid_Cache_Set_Confirm (int Confirm);
SAGA_API_DLL_EXPORT int SG_Grid_Cache_Get_Confirm (void);
SAGA_API_DLL_EXPORT void SG_Grid_Cache_Set_Threshold (int nBytes);
SAGA_API_DLL_EXPORT void SG_Grid_Cache_Set_Threshold_MB (double nMegabytes);
SAGA_API_DLL_EXPORT sLong SG_Grid_Cache_Get_Threshold (void);
SAGA_API_DLL_EXPORT double SG_Grid_Cache_Get_Threshold_MB (void);
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
class CSG_Grid_Stack : public CSG_Stack
{
public:
CSG_Grid_Stack(void) : CSG_Stack(sizeof(TSG_Point_Int)) {}
//-----------------------------------------------------
virtual bool Push (int x, int y)
{
TSG_Point_Int *pPoint = (TSG_Point_Int *)Get_Record_Push();
if( pPoint )
{
pPoint->x = x;
pPoint->y = y;
return( true );
}
return( false );
}
//-----------------------------------------------------
virtual bool Pop (int &x, int &y)
{
TSG_Point_Int *pPoint = (TSG_Point_Int *)Get_Record_Pop();
if( pPoint )
{
x = pPoint->x;
y = pPoint->y;
return( true );
}
return( false );
}
};
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
class SAGA_API_DLL_EXPORT CSG_Grid_Cell_Addressor
{
public:
CSG_Grid_Cell_Addressor(void);
bool Destroy (void);
CSG_Distance_Weighting & Get_Weighting (void) { return( m_Weighting ); }
bool Set_Radius (double Radius, bool bSquare = false);
bool Set_Annulus (double inner_Radius, double outer_Radius);
bool Set_Sector (double Radius, double Direction, double Tolerance);
int Get_Count (void) const { return( m_Cells.Get_Count() ); }
int Get_X (int Index, int Offset = 0) const { return( Offset + (Index >= 0 && Index < Get_Count() ? m_Cells.Get_Record_byIndex(Index)->asInt(0) : 0) ); }
int Get_Y (int Index, int Offset = 0) const { return( Offset + (Index >= 0 && Index < Get_Count() ? m_Cells.Get_Record_byIndex(Index)->asInt(1) : 0) ); }
double Get_Distance (int Index) const { return( Index >= 0 && Index < Get_Count() ? m_Cells.Get_Record_byIndex(Index)->asDouble(2) : -1.0 ); }
double Get_Weight (int Index) const { return( Index >= 0 && Index < Get_Count() ? m_Cells.Get_Record_byIndex(Index)->asDouble(3) : 0.0 ); }
bool Get_Values (int Index, int &x, int &y, double &Distance, double &Weight, bool bOffset = false) const
{
if( Index >= 0 && Index < Get_Count() )
{
CSG_Table_Record *pCell = m_Cells.Get_Record_byIndex(Index);
if( bOffset )
{
x += pCell->asInt(0);
y += pCell->asInt(1);
}
else
{
x = pCell->asInt(0);
y = pCell->asInt(1);
}
Distance = pCell->asDouble(2);
Weight = pCell->asDouble(3);
return( true );
}
return( false );
}
private:
CSG_Distance_Weighting m_Weighting;
CSG_Table m_Cells;
};
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
#endif // #ifndef HEADER_INCLUDED__SAGA_API__grid_H
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