PRIVATE void stack_adjust_zpos(const Stack *stack, int x, int y, int *z)
{
int old_z = *z;
int new_z = *z;
double value[5];
double points[15];
int i;
for (i = 0; i <= 5; i++) {
points[i*3] = x;
points[i*3+1] = y;
points[i*3+2] = *z + i - 2;
}
do {
old_z = new_z;
Stack_Points_Sampling(stack, points, 5, value);
if (!(isnan(value[0]) || isnan(value[1]) || isnan(value[2]) ||
isnan(value[3]) || isnan(value[4]))) {
if ((dmax2(value[0], value[1]) < value[2]) && (value[2] < dmin2(value[3],
value[4]))) {
new_z++;
} else if ((dmin2(value[0], value[1]) > value[2]) &&
(value[2] > dmax2(value[3], value[4]))) {
new_z--;
}
}
if (new_z == old_z) {
double w = 0.0;
double zw = 0.0;
for (i = 0; i < 5; i++) {
if (!isnan(value[i])) {
w += value[i];
zw += value[i] * points[3*i+2];
}
}
if (w == 0.0) {
break;
} else {
new_z = iround(zw / w);
}
}
for (i = 0; i < 5; i++) {
points[i*3+2] += new_z - old_z;
}
} while (old_z != new_z);
*z = new_z;
}
int main(int argc, char *argv[])
{
Stack *stack = Make_Stack(GREY, 3, 3, 3);
int i;
for (i = 0; i < Stack_Voxel_Number(stack); i++) {
stack->array[i] = i;
}
Print_Stack(stack);
printf("%g\n", Stack_Point_Sampling(stack, 1.1, 1.5, 1.0));
printf("%g\n", Stack_Point_Sampling(stack, 1.1, 1.0, 1.5));
printf("%g\n", Stack_Point_Sampling(stack, 1.1, 1.0, 1.0));
printf("%g\n", Stack_Point_Sampling(stack, 1.0, 1.5, 1.3));
printf("%g\n", Stack_Point_Sampling(stack, 1.0, 1.5, 1.0));
printf("%g\n", Stack_Point_Sampling(stack, 1.0, 1.0, 1.3));
printf("%g\n", Stack_Point_Sampling(stack, 1.0, 1.5, 1.0));
DMatrix *dm;
dim_type dim[3];
dim[0] = 10;
dim[1] = 4;
dim[2] = 5;
dm = Make_DMatrix(dim, 3);
int j, k;
int offset = 0;
double x, y, z;
dim[0] = matrix_size(dm->dim, dm->ndim);
dim[1] = 3;
DMatrix *points = Make_DMatrix(dim, 2);
for (k = 0; k < dm->dim[2]; k++) {
z = (double) (k ) * (stack->depth - 1) / (dm->dim[2] - 1);
for (j = 0; j < dm->dim[1]; j++) {
y = (double) (j ) * (stack->height - 1) / (dm->dim[1] - 1);
for (i = 0; i < dm->dim[0]; i++) {
x = (double) (i ) * (stack->width - 1) / (dm->dim[0] - 1);
points->array[offset++] = x;
points->array[offset++] = y;
points->array[offset++] = z;
}
}
}
tic();
for (j = 0; j < 100; j++) {
Stack_Points_Sampling(stack, points->array, points->dim[0], dm->array);
}
printf("%llu\n", toc());
DMatrix_Print(dm);
Kill_Stack(stack);
stack = Scale_Double_Stack(dm->array, dm->dim[0], dm->dim[1], dm->dim[2],
GREY);
Write_Stack("../data/test.tif", stack);
Kill_Stack(stack);
Kill_DMatrix(dm);
Kill_DMatrix(points);
return 0;
}
