InterpFromMesh2dx.cpp File Reference

"c" core code for interpolating values from a structured grid. More...

#include "./InterpFromMesh2dx.h"
#include "../../shared/shared.h"
#include "../../toolkits/toolkits.h"
#include "../../classes/classes.h"
#include "../ContourToNodesx/ContourToNodesx.h"

Go to the source code of this file.

Functions
int	InterpFromMesh2dx (IssmSeqVec< IssmPDouble > **pdata_prime, int *index_data, double *x_data, double *y_data, int nods_data, int nels_data, double *data, int data_length, double *x_prime, double *y_prime, int nods_prime, double *default_values, int num_default_values, Contour< IssmPDouble > **contours, int numcontours)

Detailed Description

"c" core code for interpolating values from a structured grid.

Definition in file InterpFromMesh2dx.cpp.

Function Documentation

InterpFromMesh2dx()

int InterpFromMesh2dx	(	IssmSeqVec< IssmPDouble > **	pdata_prime,
		int *	index_data,
		double *	x_data,
		double *	y_data,
		int	nods_data,
		int	nels_data,
		double *	data,
		int	data_length,
		double *	x_prime,
		double *	y_prime,
		int	nods_prime,
		double *	default_values,
		int	num_default_values,
		Contour< IssmPDouble > **	contours,
		int	numcontours
	)

Definition at line 11 of file InterpFromMesh2dx.cpp.

                                                                                                       {
 
   /*Output*/
   IssmSeqVec<IssmPDouble>* data_prime=NULL;
 
   /*Intermediary*/
   int    i;
   int    interpolation_type;
   bool   debug;
   double xmin,xmax;
   double ymin,ymax;
 
   /*contours: */
   double *incontour     = NULL;
 
   /*some checks*/
   if (nels_data<1 || nods_data<3 || nods_prime==0){
      _error_("nothing to be done according to the mesh given in input");
   }
 
   /*Set debug to 1 if there are lots of elements*/
   debug=(bool)((double)nels_data*(double)nods_prime >= pow((double)10,(double)9));
 
   /*figure out what kind of interpolation is needed*/
   if (data_length==nods_data){
      interpolation_type=1;
   }
   else if (data_length==nels_data){
      interpolation_type=2;
   }
   else{
      _error_("length of vector data not supported yet. It should be of length (number of nodes) or (number of elements)!");
   }
 
   if((numcontours) && (interpolation_type==2)){
      _error_("element interpolation_type with contours not supported yet!");
   }
 
   /*Get prime mesh extrema coordinates*/
   xmin=x_prime[0]; xmax=x_prime[0];ymin=y_prime[0]; ymax=y_prime[0];
   for (i=1;i<nods_prime;i++){
      if (x_prime[i]<xmin) xmin=x_prime[i];
      if (x_prime[i]>xmax) xmax=x_prime[i];
      if (y_prime[i]<ymin) ymin=y_prime[i];
      if (y_prime[i]>ymax) ymax=y_prime[i];
   }
 
   /*Initialize output*/
   data_prime=new IssmSeqVec<IssmPDouble>(nods_prime);
   if(num_default_values){
      if(num_default_values==1)for (i=0;i<nods_prime;i++) data_prime->SetValue(i,default_values[0],INS_VAL);
      else for (i=0;i<nods_prime;i++) data_prime->SetValue(i,default_values[i],INS_VAL);
   }
 
   /*Build indices of contour: */
   if(numcontours){
      ContourToNodesx( &incontour,x_prime,y_prime,nods_prime,contours,numcontours,1);
   }
   else{
       incontour=xNew<double>(nods_prime);
       for (i=0;i<nods_prime;i++) incontour[i]=1.0;
   }
 
   /*initialize thread parameters: */
   InterpFromMesh2dxThreadStruct gate;
   gate.interpolation_type = interpolation_type;
   gate.debug              = debug;
   gate.nels_data          = nels_data;
   gate.index_data         = index_data;
   gate.x_data             = x_data;
   gate.y_data             = y_data;
   gate.data               = data;
   gate.xmin               = xmin;
   gate.xmax               = xmax;
   gate.ymin               = ymin;
   gate.ymax               = ymax;
   gate.nods_prime         = nods_prime;
   gate.data_prime         = data_prime;
   gate.x_prime            = x_prime;
   gate.y_prime            = y_prime;
   gate.default_values     = default_values;
   gate.num_default_values = num_default_values;
   gate.incontour          = incontour;
 
   /*launch the thread manager with InterpFromGridToMeshxt as a core: */
   LaunchThread(InterpFromMesh2dxt,(void*)&gate,_NUMTHREADS_);
 
   /*Assign output pointers:*/
    xDelete<double>(incontour);
   *pdata_prime=data_prime;
   return 1;
}