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grid_gradient_CPU.cpp
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Tue, Nov 19, 18:41

grid_gradient_CPU.cpp
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#include "grid_gradient_CPU.hpp"
void gradient_grid_CPU(double *grid_grad_x, double *grid_grad_y, const struct grid_param *frame, const struct Potential_SOA *lens, int *Nlens, int nbgridcells){
//SIS
gradient_grid_sis_CPU(grid_grad_x, grid_grad_y,frame,Nlens[0],nbgridcells, &lens[0]);
//PIEMD8
gradient_grid_piemd_CPU(grid_grad_x, grid_grad_y,frame,Nlens[1], nbgridcells, &lens[1]);
//PIEMD81
}
void gradient_grid_sis_CPU(double *grid_grad_x, double *grid_grad_y, const struct grid_param *frame, int Nlens,int nbgridcells, const struct Potential_SOA *lens){
int bid=0; // index of the block (and of the set of images)
int tid=0; // index of the thread within the block
double dx,dy,x_pos,y_pos; //pixelsize
int grid_dim, index;
point Grad, image_point, true_coord_rotation;
double R;
dx = (frame->xmax - frame->xmin)/(nbgridcells-1);
dy = (frame->ymax - frame->ymin)/(nbgridcells-1);
grid_dim = (nbgridcells);
index = bid ;
while(index < grid_dim*grid_dim){
grid_grad_x[index] = 0.;
grid_grad_y[index] = 0.;
image_point.x = frame->xmin + (index/grid_dim)*dx;
image_point.y = frame->ymin + (index % grid_dim)*dy;
Grad = module_potentialDerivatives_totalGradient_5_SOA(&image_point, lens,0, Nlens);
grid_grad_x[index] = Grad.x;
grid_grad_y[index] = Grad.y;
bid += 1;
index = bid * 1 + tid;
}
}
void gradient_grid_piemd_CPU(double *grid_grad_x, double *grid_grad_y, const struct grid_param *frame, int Nlens,int nbgridcells, const struct Potential_SOA *lens){
int bid=0; // index of the block (and of the set of images)
int tid=0; // index of the thread within the block
double dx,dy,x_pos,y_pos; //pixelsize
int grid_dim, index;
point Grad, image_point, true_coord_rotation;
complex zis;
dx = (frame->xmax - frame->xmin)/(nbgridcells-1);
dy = (frame->ymax - frame->ymin)/(nbgridcells-1);
grid_dim = (nbgridcells);
index = bid ;
while(index < grid_dim*grid_dim){
image_point.x = frame->xmin + (index/grid_dim)*dx;
image_point.y = frame->ymin + (index % grid_dim)*dy;
Grad = module_potentialDerivatives_totalGradient_8_SOA(&image_point, lens,0, Nlens);
grid_grad_x[index] = Grad.x;
grid_grad_y[index] = Grad.y;
//printf("%d %d \n", index,grid_dim );
bid += 1;
index = bid * 1 + tid;
}
}

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