//---------------------------------------------------------
bool CDirect_Georeferencing::On_Execute(void)
{
//-----------------------------------------------------
if( !m_Georeferencer.Set_Transformation(Parameters, Get_NX(), Get_NY()) )
{
return( false );
}
//-----------------------------------------------------
CSG_Grid *pDEM = Parameters("DEM" )->asGrid();
double zRef = Parameters("ZREF" )->asDouble();
bool bFlip = Parameters("ROW_ORDER")->asInt() == 1;
//-----------------------------------------------------
TSG_Grid_Resampling Resampling;
switch( Parameters("RESAMPLING")->asInt() )
{
default: Resampling = GRID_RESAMPLING_NearestNeighbour; break;
case 1: Resampling = GRID_RESAMPLING_Bilinear; break;
case 2: Resampling = GRID_RESAMPLING_BicubicSpline; break;
case 3: Resampling = GRID_RESAMPLING_BSpline; break;
}
//-----------------------------------------------------
TSG_Point p[4];
p[0] = m_Georeferencer.Image_to_World( 0, 0, zRef);
p[1] = m_Georeferencer.Image_to_World(Get_NX(), 0, zRef);
p[2] = m_Georeferencer.Image_to_World(Get_NX(), Get_NY(), zRef);
p[3] = m_Georeferencer.Image_to_World( 0, Get_NY(), zRef);
CSG_Rect r(p[0], p[1]); r.Union(p[2]); r.Union(p[3]);
//-----------------------------------------------------
CSG_Shapes *pShapes = Parameters("EXTENT")->asShapes();
if( pShapes )
{
pShapes->Create(SHAPE_TYPE_Polygon, _TL("Extent"));
pShapes->Add_Field(_TL("OID"), SG_DATATYPE_Int);
CSG_Shape *pExtent = pShapes->Add_Shape();
pExtent->Add_Point(p[0]);
pExtent->Add_Point(p[1]);
pExtent->Add_Point(p[2]);
pExtent->Add_Point(p[3]);
}
//-----------------------------------------------------
double Cellsize = SG_Get_Distance(p[0], p[1]) / Get_NX();
CSG_Grid_System System(Cellsize, r);
m_Grid_Target.Set_User_Defined(Get_Parameters("TARGET"), r, Get_NX());
if( !Dlg_Parameters("TARGET") )
{
return( false );
}
System = m_Grid_Target.Get_System();
if( !System.is_Valid() )
{
return( false );
}
//-----------------------------------------------------
CSG_Parameter_Grid_List *pInput = Parameters("INPUT" )->asGridList();
CSG_Parameter_Grid_List *pOutput = Parameters("OUTPUT")->asGridList();
pOutput->Del_Items();
if( pInput->Get_Count() <= 0 )
{
return( false );
}
else
{
TSG_Data_Type Type;
switch( Parameters("DATA_TYPE")->asInt() )
{
case 0: Type = SG_DATATYPE_Byte; break;
case 1: Type = SG_DATATYPE_Char; break;
case 2: Type = SG_DATATYPE_Word; break;
case 3: Type = SG_DATATYPE_Short; break;
case 4: Type = SG_DATATYPE_DWord; break;
case 5: Type = SG_DATATYPE_Int; break;
case 6: Type = SG_DATATYPE_Float; break;
case 7: Type = SG_DATATYPE_Double; break;
default: Type = SG_DATATYPE_Undefined; break;
}
for(int i=0; i<pInput->Get_Count(); i++)
{
CSG_Grid *pGrid = SG_Create_Grid(System, Type != SG_DATATYPE_Undefined ? Type : pInput->asGrid(i)->Get_Type());
if( !pGrid || !pGrid->is_Valid() )
{
if( pGrid )
{
delete(pGrid);
}
return( false );
}
pOutput->Add_Item(pGrid);
pGrid->Set_Name(pInput->asGrid(i)->Get_Name());
}
}
//-----------------------------------------------------
for(int y=0; y<System.Get_NY() && Set_Progress(y, System.Get_NY()); y++)
{
double py = System.Get_YMin() + y * System.Get_Cellsize();
#pragma omp parallel for
for(int x=0; x<System.Get_NX(); x++)
{
double pz, px = System.Get_XMin() + x * System.Get_Cellsize();
if( !pDEM || !pDEM->Get_Value(px, py, pz) )
{
pz = zRef;
}
TSG_Point p = m_Georeferencer.World_to_Image(px, py, pz);
if( bFlip )
{
p.y = (Get_NY() - 1) - p.y;
}
for(int i=0; i<pInput->Get_Count(); i++)
{
if( pInput->asGrid(i)->Get_Value(p.x, p.y, pz, Resampling) )
{
pOutput->asGrid(i)->Set_Value(x, y, pz);
}
else
{
pOutput->asGrid(i)->Set_NoData(x, y);
}
}
}
}
//-----------------------------------------------------
return( true );
}
//---------------------------------------------------------
bool CCRS_Transform_Grid::Set_Target_System(CSG_Parameters *pParameters, int Resolution, bool bEdges)
{
if( !pParameters || !pParameters->Get_Parameter("SOURCE") || !pParameters->Get_Parameter("CRS_PROJ4") )
{
return( false );
}
CSG_Grid *pGrid = m_bList
? pParameters->Get_Parameter("SOURCE")->asGridList()->asGrid(0)
: pParameters->Get_Parameter("SOURCE")->asGrid();
if( !pGrid || !pGrid->is_Valid() || !pGrid->Get_Projection().is_Okay()
|| !m_Projector.Set_Target(CSG_Projection(pParameters->Get_Parameter("CRS_PROJ4")->asString(), SG_PROJ_FMT_Proj4))
|| !m_Projector.Get_Target().is_Okay()
|| !m_Projector.Set_Source(pGrid->Get_Projection()) )
{
return( false );
}
//-----------------------------------------------------
int x, y;
TSG_Rect Extent;
Extent.xMin = Extent.yMin = 1.0;
Extent.xMax = Extent.yMax = 0.0;
Get_MinMax(Extent, pGrid->Get_XMin(), pGrid->Get_YMin());
Get_MinMax(Extent, pGrid->Get_XMax(), pGrid->Get_YMin());
Get_MinMax(Extent, pGrid->Get_XMin(), pGrid->Get_YMax());
Get_MinMax(Extent, pGrid->Get_XMax(), pGrid->Get_YMax());
//-----------------------------------------------------
if( bEdges ) // edges
{
double d;
int yStep = 1 + pGrid->Get_NY() / Resolution;
for(y=0, d=pGrid->Get_YMin(); y<pGrid->Get_NY(); y+=yStep, d+=yStep*pGrid->Get_Cellsize())
{
Get_MinMax(Extent, pGrid->Get_XMin(), d);
Get_MinMax(Extent, pGrid->Get_XMax(), d);
}
int xStep = 1 + pGrid->Get_NX() / Resolution;
for(x=0, d=pGrid->Get_XMin(); x<pGrid->Get_NX(); x+=xStep, d+=xStep*pGrid->Get_Cellsize())
{
Get_MinMax(Extent, d, pGrid->Get_YMin());
Get_MinMax(Extent, d, pGrid->Get_YMax());
}
}
//-----------------------------------------------------
else // all cells
{
TSG_Point p;
int xStep = 1 + pGrid->Get_NX() / Resolution;
int yStep = 1 + pGrid->Get_NY() / Resolution;
for(y=0, p.y=pGrid->Get_YMin(); y<pGrid->Get_NY(); y+=yStep, p.y+=yStep*pGrid->Get_Cellsize())
{
for(x=0, p.x=pGrid->Get_XMin(); x<pGrid->Get_NX(); x+=xStep, p.x+=xStep*pGrid->Get_Cellsize())
{
Get_MinMax(Extent, p.x, p.y);
}
}
}
return( Extent.xMin < Extent.xMax && Extent.yMin < Extent.yMax
&& m_Grid_Target.Set_User_Defined(pParameters, Extent, pGrid->Get_NY())
&& m_Grid_Target.Get_System().is_Valid()
);
}
