void pan_up(int shift)
{
zoomyoff += (posn_rnd[cur_gridunit][P_GRID3]/display_zoomscale*(shift?5.0:1.0));
reset_sideruler();
redisplay_sideruler();
setup_grid();
}
void pan_left(int shift)
{
zoomxoff += (posn_rnd[cur_gridunit][P_GRID3]/display_zoomscale*(shift?5.0:1.0));
reset_topruler();
redisplay_topruler();
setup_grid();
}
int main (int argc, char *argv[])
{
double **phi, **oldphi;
int **mask;
int i, j, k;
int nptsx = 200, nptsy = 200;
int nsteps = 500;
phi = (double **)malloc(sizeof(double*)*nptsy);
oldphi = (double **)malloc(sizeof(double*)*nptsy);
mask = (int **)malloc(sizeof(int*)*nptsy);
for (k=0;k<nptsy;k++){
phi[k] = (double *)malloc(sizeof(double)*nptsx);
oldphi[k] = (double *)malloc(sizeof(double)*nptsx);
mask[k] = (int *)malloc(sizeof(int)*nptsx);
}
setup_grid (phi, nptsx, nptsy, mask);
/* Iterate to find solution */
for(k=1;k<=nsteps;k++){
for(j=0;j<nptsy;j++)
for(i=0;i<nptsx;i++)
oldphi[j][i] = phi[j][i];
for(j=0;j<nptsy;j++)
for(i=0;i<nptsx;i++)
if (mask[j][i]) phi[j][i] = 0.25*(oldphi[j][i-1] +
oldphi[j][i+1] + oldphi[j-1][i] + oldphi[j+1][i]);
}
output_array (phi, nptsx, nptsy);
return 0;
}
void pan_down(int shift)
{
zoomyoff -= (posn_rnd[cur_gridunit][P_GRID3]/display_zoomscale*(shift?5.0:1.0));
if (!appres.allownegcoords && (zoomyoff < 0))
zoomyoff = 0;
reset_sideruler();
redisplay_sideruler();
setup_grid();
}
int main (int argc, char *argv[])
{
float *h_phi;
float *h_oldphi;
int *h_mask;
int nsize1=sizeof(float)*NPTSX*NPTSY;
int nsize2=sizeof(int)*NPTSX*NPTSY;
h_phi = (float *)malloc(nsize1);
h_oldphi = (float *)malloc(nsize1);
h_mask = (int *)malloc(nsize2);
setup_grid (h_oldphi, NPTSX, NPTSY, h_mask);
performUpdates(h_phi,h_oldphi,h_mask,NPTSX,NPTSY,NSTEPS);
output_array (h_phi, NPTSX, NPTSY);
return 0;
}
void
pan_origin(void)
{
/* turn off Compose key LED */
setCompLED(0);
if (zoomxoff == 0 && zoomyoff == 0)
return;
if (zoomyoff != 0) {
zoomyoff = 0;
setup_sideruler();
redisplay_sideruler();
}
if (zoomxoff != 0) {
zoomxoff = 0;
reset_topruler();
redisplay_topruler();
}
setup_grid();
}
