📄 grid_import.cpp
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///////////////////////////////////////////////////////////
// //
// SAGA //
// //
// System for Automated Geoscientific Analyses //
// //
// Module Library: //
// image_io //
// //
//-------------------------------------------------------//
// //
// Grid_Import.cpp //
// //
// Copyright (C) 2005 by //
// Olaf Conrad //
// //
//-------------------------------------------------------//
// //
// This file is part of 'SAGA - System for Automated //
// Geoscientific Analyses'. SAGA is free software; you //
// can redistribute it and/or modify it under the terms //
// of the GNU General Public License as published by the //
// Free Software Foundation; version 2 of the License. //
// //
// SAGA 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 General Public //
// License for more details. //
// //
// You should have received a copy of the GNU General //
// Public License along with this program; if not, //
// write to the Free Software Foundation, Inc., //
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, //
// USA. //
// //
//-------------------------------------------------------//
// //
// e-mail: oconrad@saga-gis.org //
// //
// contact: SAGA User Group Association //
// Institute of Geography //
// University of Goettingen //
// Goldschmidtstr. 5 //
// 37077 Goettingen //
// Germany //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
#include <wx/filename.h>
#include <wx/image.h>
#include "grid_import.h"
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
CGrid_Import::CGrid_Import(void)
{
//-----------------------------------------------------
Set_Name (_TL("Import Image (bmp, jpg, png, tif, gif, pnm, xpm)"));
Set_Author (_TL("Copyrights (c) 2005 by Olaf Conrad"));
Set_Description (_TW(
"Loads an image."
));
//-----------------------------------------------------
Parameters.Add_Grid_Output(
NULL , "OUT_GRID" , _TL("Image"),
_TL("")
);
Parameters.Add_Grid_Output(
NULL , "OUT_RED" , _TL("Image (Red Channel)"),
_TL("")
);
Parameters.Add_Grid_Output(
NULL , "OUT_GREEN" , _TL("Image (Green Channel)"),
_TL("")
);
Parameters.Add_Grid_Output(
NULL , "OUT_BLUE" , _TL("Image (Blue Channel)"),
_TL("")
);
//-----------------------------------------------------
Parameters.Add_FilePath(
NULL , "FILE" , _TL("Image File"),
_TL(""),
CSG_String::Format(SG_T("%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s"),
_TL("All Recognized File Types") , SG_T("*.bmp;*.ico;*.gif;*.jpg;*.jif;*.jpeg;*.pcx;*.png;*.pnm;*.tif;*.tiff;*.xpm"),
_TL("CompuServe Graphics Interchange (*.gif)") , SG_T("*.gif"),
_TL("JPEG - JFIF Compliant (*.jpg, *.jif, *.jpeg)") , SG_T("*.jpg;*.jif;*.jpeg"),
_TL("Portable Network Graphics (*.png)") , SG_T("*.png"),
_TL("Tagged Image File Format (*.tif, *.tiff)") , SG_T("*.tif;*.tiff"),
_TL("Windows or OS/2 Bitmap (*.bmp)") , SG_T("*.bmp"),
_TL("Zsoft Paintbrush (*.pcx)") , SG_T("*.pcx"),
_TL("All Files") , SG_T("*.*")
)
);
Parameters.Add_Choice(
NULL , "METHOD" , _TL("Options"),
_TL(""),
CSG_String::Format(SG_T("%s|%s|%s|"),
_TL("Standard"),
_TL("Split Channels"),
_TL("Enforce True Color")
)
);
//-----------------------------------------------------
// wxInitAllImageHandlers();
wxImage::AddHandler(new wxBMPHandler); // For loading and saving.
wxImage::AddHandler(new wxICOHandler); // For loading and saving.
wxImage::AddHandler(new wxJPEGHandler); // For loading and saving.
wxImage::AddHandler(new wxPCXHandler); // For loading and saving.
wxImage::AddHandler(new wxPNGHandler); // For loading (including alpha support) and saving.
wxImage::AddHandler(new wxPNMHandler); // For loading and saving.
wxImage::AddHandler(new wxTIFFHandler); // For loading and saving.
wxImage::AddHandler(new wxXPMHandler); // For loading and saving.
wxImage::AddHandler(new wxGIFHandler); // Only for loading, due to legal issues.
}
//---------------------------------------------------------
CGrid_Import::~CGrid_Import(void)
{}
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
#define ADD_GRID(g, s, t) g = SG_Create_Grid(t, img.GetWidth(), img.GetHeight(), Cellsize, xMin, yMin); g->Set_Name(s);
//---------------------------------------------------------
bool CGrid_Import::On_Execute(void)
{
int x, y, yy, Method;
double d, Cellsize, xMin, yMin;
CSG_Colors Colors;
CSG_Grid *pR, *pG, *pB;
FILE *Stream;
wxFileName fName;
wxImage img;
wxImageHistogram hst;
//-----------------------------------------------------
fName = Parameters("FILE") ->asString();
Method = Parameters("METHOD") ->asInt();
if( img.LoadFile(fName.GetFullPath()) )
{
if( !fName.GetExt().CmpNoCase(SG_T("bmp")) )
{
fName.SetExt(SG_T("bpw"));
}
else if( !fName.GetExt().CmpNoCase(SG_T("jpg")) )
{
fName.SetExt(SG_T("jgw"));
}
else if( !fName.GetExt().CmpNoCase(SG_T("png")) )
{
fName.SetExt(SG_T("pgw"));
}
else if( !fName.GetExt().CmpNoCase(SG_T("tif")) )
{
fName.SetExt(SG_T("tfw"));
}
else
{
fName.SetExt(SG_T("world"));
}
//-------------------------------------------------
if( (Stream = fopen(fName.GetFullPath().mb_str(), "r")) != NULL )
{
fscanf(Stream, "%lf %lf %lf %lf %lf %lf ", &Cellsize, &d, &d, &d, &xMin, &yMin);
yMin = yMin - (img.GetHeight() - 1) * Cellsize;
fclose(Stream);
}
else
{
Cellsize = 1.0;
xMin = 0.0;
yMin = 0.0;
}
//-------------------------------------------------
if( Method == 1 )
{
ADD_GRID(pR, CSG_String::Format(SG_T("%s [R]"), fName.GetName().c_str()), GRID_TYPE_Byte);
ADD_GRID(pG, CSG_String::Format(SG_T("%s [G]"), fName.GetName().c_str()), GRID_TYPE_Byte);
ADD_GRID(pB, CSG_String::Format(SG_T("%s [B]"), fName.GetName().c_str()), GRID_TYPE_Byte);
for(y=0, yy=pR->Get_NY()-1; y<pR->Get_NY() && Set_Progress(y, pR->Get_NY()); y++, yy--)
{
for(x=0; x<pR->Get_NX(); x++)
{
pR->Set_Value(x, y, img.GetRed (x, yy));
pG->Set_Value(x, y, img.GetGreen(x, yy));
pB->Set_Value(x, y, img.GetBlue (x, yy));
}
}
Parameters("OUT_RED") ->Set_Value(pR);
DataObject_Set_Colors(pR, 100, SG_COLORS_BLACK_RED);
Parameters("OUT_GREEN") ->Set_Value(pG);
DataObject_Set_Colors(pG, 100, SG_COLORS_BLACK_GREEN);
Parameters("OUT_BLUE") ->Set_Value(pB);
DataObject_Set_Colors(pB, 100, SG_COLORS_BLACK_BLUE);
}
//-------------------------------------------------
else if( Method == 0 && (yy = img.ComputeHistogram(hst)) <= 256 )
{
Colors.Set_Count(yy);
for(wxImageHistogram::iterator i=hst.begin(); i!=hst.end(); ++i)
{
Colors.Set_Color(i->second.index, SG_GET_R(i->first), SG_GET_G(i->first), SG_GET_B(i->first));
}
ADD_GRID(pR, CSG_String( fName.GetName() ), yy <= 2 ? GRID_TYPE_Bit : GRID_TYPE_Byte);
for(y=0, yy=pR->Get_NY()-1; y<pR->Get_NY() && Set_Progress(y, pR->Get_NY()); y++, yy--)
{
for(x=0; x<pR->Get_NX(); x++)
{
pR->Set_Value(x, y, hst[SG_GET_RGB(img.GetRed(x, yy), img.GetGreen(x, yy), img.GetBlue(x, yy))].index);
}
}
Parameters("OUT_GRID") ->Set_Value(pR);
DataObject_Set_Colors(pR, Colors);
DataObject_Update(pR, 0, Colors.Get_Count() - 1);
}
//-------------------------------------------------
else
{
hst.clear();
ADD_GRID(pR, CSG_String( fName.GetName() ).c_str(), GRID_TYPE_Int);
for(y=0, yy=pR->Get_NY()-1; y<pR->Get_NY() && Set_Progress(y, pR->Get_NY()); y++, yy--)
{
for(x=0; x<pR->Get_NX(); x++)
{
pR->Set_Value(x, y, SG_GET_RGB(img.GetRed(x, yy), img.GetGreen(x, yy), img.GetBlue(x, yy)));
}
}
Parameters("OUT_GRID") ->Set_Value(pR);
DataObject_Set_Colors(pR, 100, SG_COLORS_BLACK_WHITE);
CSG_Parameters Parms;
if( DataObject_Get_Parameters(pR, Parms) && Parms("COLORS_TYPE") )
{
Parms("COLORS_TYPE")->Set_Value(3); // Color Classification Type: RGB
DataObject_Set_Parameters(pR, Parms);
}
}
return( true );
}
return( false );
}
///////////////////////////////////////////////////////////
// //
// //
// //
///////////////////////////////////////////////////////////
//---------------------------------------------------------
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