/*!
* Puts values from the slice [s] into the volume in
* the @@Istack structure@ [v] at coordinate [sno] along the axis given by
* [axis], which must be one of x, X, y, Y, z, or Z. For a Z slice,
* the existing slice is freed and the supplied slice becomes part of the
* stack, so it should not be freed separately from the stack. Returns 0.
*/
int mrc_slice_putvol(Istack *v, Islice *s, int sno, char axis)
{
Ival val;
int i, j, k;
switch (axis){
case 'z': case 'Z':
sliceFree(v->vol[sno]);
v->vol[sno] = s;
break;
case 'y': case 'Y':
for (k = 0; k < s->ysize; k++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, k, val);
slicePutVal(v->vol[k], i, sno, val);
}
break;
case 'x': case 'X':
for (k = 0; k < s->ysize; k++)
for (j = 0; j < s->xsize; j++){
sliceGetVal(s, j, k, val);
slicePutVal(v->vol[k], sno, j, val);
}
break;
default:
return(0);
}
return(0);
}
/* reorders data so that fft center is at (datasize/2 <-> 0 )
UNUSED 2/2/07 except by unused mrc_vol_wrap */
int mrc_slice_wrap(Islice *s)
{
int i,j;
int mx, my;
Ival val, tval;
mx = s->xsize / 2;
my = s->ysize / 2;
for (j = 0; j < my; j++){
for (i = 0; i < mx; i++){
fflush(stdout);
sliceGetVal(s, i, j, val);
sliceGetVal(s, i + mx, j + my, tval);
slicePutVal(s, i, j, tval);
slicePutVal(s, i + mx, j + my, val);
}
for( i = mx; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
sliceGetVal(s, i - mx, j + my, tval);
slicePutVal(s, i, j, tval);
slicePutVal(s, i - mx, j + my, val);
}
}
return(0);
}
/*!
* Extracts a slice at section number [sno] from the volume in the
* @@Istack structure@ [v], where [axis] is either x or X for a Y/Z slice or
* y or Y for an X/Z slice. Returns NULL for error.
*/
Islice *mrc_slice_getvol(Istack *v, int sno, char axis)
{
Islice *sout;
Ival val;
int i, j, k;
switch (axis){
case 'y': case 'Y':
sout = sliceCreate(v->vol[0]->xsize, v->zsize, v->vol[0]->mode);
if (!sout)
return(NULL);
for (k = 0; k < sout->ysize; k++)
for(i = 0; i < sout->xsize; i++){
sliceGetVal(v->vol[k], i, sno, val);
slicePutVal(sout, i, k, val);
}
break;
case 'x': case 'X':
sout = sliceCreate(v->vol[0]->ysize, v->zsize, v->vol[0]->mode);
if (!sout)
return(NULL);
for (k = 0; k < sout->ysize; k++)
for (j = 0; j < sout->xsize; j++){
sliceGetVal(v->vol[k], sno, j, val);
slicePutVal(sout, j, k, val);
}
break;
default:
return(NULL);
}
return(sout);
}
/*!
* Mirrors the slice [s] about the given axis, where [axis] must be one of
* x, X, y, or Y. Returns 1 for error.
*/
int sliceMirror(Islice *s, char axis)
{
int i, j;
Ival val1;
Ival val2;
int lim;
if (axis == 'x' || axis == 'X'){
lim = s->ysize / 2;
for(j = 0; j < lim; j++){
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val1);
sliceGetVal(s, i, s->ysize - j - 1, val2);
slicePutVal(s, i, j, val2);
slicePutVal(s, i, s->ysize - j - 1, val1);
}
}
return(0);
}
if (axis == 'y' || axis == 'Y'){
lim = s->xsize / 2;
for(i = 0; i < lim; i++)
for(j = 0; j < s->ysize; j++){
sliceGetVal(s, i, j, val1);
sliceGetVal(s, s->xsize - 1 - i, j, val2);
slicePutVal(s, i, j, val2);
slicePutVal(s, s->xsize - 1 - i, j, val1);
}
return(0);
}
return(-1);
}
/*!
* Fills the value array [val] with the interpolated value from position
* [x], [y] in slice [sl], using quadratic interpolation. For areas where
* there is no image data, the slice mean is used for all elements of val.
*/
void sliceQuadInterpolate(Islice *sl, double x, double y, Ival val)
{
int xi, yi; /* nearest integer value to x, y */
float dx, dy; /* difference between nearest int val and actual value. */
float a,b,c,d; /* coeffs for quad. */
int i;
Ival x1,x2,y1,y2;
val[1] = val[2] = x1[1] = x1[2] = x2[1] = x2[2] = 0.;
y1[1] = y1[2] = y2[1] = y2[2] = 0.;
xi = (int)floor(x + 0.5);
yi = (int)floor(y + 0.5);
dx = x - xi;
dy = y - yi;
sliceGetVal(sl, xi, yi, val);
sliceGetVal(sl, xi - 1, yi, x1);
sliceGetVal(sl, xi + 1, yi, x2);
sliceGetVal(sl, xi, yi - 1, y1);
sliceGetVal(sl, xi, yi + 1, y2);
for (i = 0; i < sl->csize; i++) {
a = (x1[i] + x2[i]) * 0.5f - (float)val[i];
b = (y1[i] + y2[i]) * 0.5f - (float)val[i];
c = (x2[i] - x1[i]) * 0.5f;
d = (y2[i] - y1[i]) * 0.5f;
val[i] = (a * dx * dx) + (b * dy * dy) + (c * dx)+(d * dy) + val[i];
}
return;
}
/*!
* Scales data in the slice by the factor [alpha] around the value [fixed];
* i.e., a value of [fixed] is unchanged by the scaling. Returns 0.
*/
int mrc_slice_lie(Islice *sin, double fixed, double alpha)
{
int i, j, c;
Ival val;
float scale, offset, minval, maxval;
minval = maxval = 0.;
scale = (float)alpha;
offset = (1.0f - scale) * (float)fixed;
switch(sin->mode) {
case MRC_MODE_BYTE:
case MRC_MODE_RGB:
maxval = 255.;
break;
case MRC_MODE_SHORT:
case MRC_MODE_COMPLEX_SHORT:
minval = -32768.;
maxval = 32767.;
break;
case MRC_MODE_USHORT:
maxval = 65535.;
break;
}
if (sin->csize == 1) {
for (j = 0; j < sin->ysize; j++)
for (i = 0; i < sin->xsize; i++) {
sliceGetVal(sin, i, j, val);
val[0] = (offset + (scale * val[0]));
if (maxval) {
if (val[0] > maxval)
val[0] = maxval;
if (val[0] < minval)
val[0] = minval;
}
slicePutVal(sin, i, j, val);
}
} else {
for (j = 0; j < sin->ysize; j++)
for (i = 0; i < sin->xsize; i++) {
sliceGetVal(sin, i, j, val);
for (c = 0; c < sin->csize; c++) {
val[c] = (offset + (scale * val[c]));
if (maxval) {
if (val[c] > maxval)
val[c] = maxval;
if (val[c] < minval)
val[c] = minval;
}
}
slicePutVal(sin, i, j, val);
}
}
return(0);
}
/*!
* Creates a new slice of size [nx], [ny] and resizes the input slice [slin]
* into this slice, with the center of the old slice placed in the center of
* the new one. Fills areas with no data from the old slice with
* the slice mean for every channel of multi-channel data. Returns new slice
* or NULL for error.
*/
Islice *mrc_slice_resize(Islice *slin, int nx, int ny)
{
Islice *sout;
int i, j, x, y;
int sx, sy;
Ival pval, val;
pval[0] = slin->mean;
pval[1] = slin->mean;
pval[2] = slin->mean;
sout = sliceCreate(nx, ny, slin->mode);
if (!sout)
return(sout);
sx = (slin->xsize - nx) / 2;
sy = (slin->ysize - ny) / 2;
for(j = 0, y = sy; j < ny; j++, y++)
for(i = 0, x = sx; i < nx; i++, x++){
if ( (x < 0) || (y < 0) ||
(x >= slin->xsize) || (y >= slin->ysize ) )
slicePutVal(sout, i, j, pval);
else{
sliceGetVal(slin, x, y, val);
slicePutVal(sout, i, j, val);
}
}
return(sout);
}
/* Unused 11/10/05 */
int mrc_slice_lie_img(Islice *sin,
Islice *mask, double alpha)
{
int i, j;
Ival val1, val2;
float a, ma;
a = alpha;
ma = 1 - alpha;
for(j = 0; j < sin->ysize; j++)
for(i = 0; i < sin->xsize; i++){
sliceGetVal(sin, i, j, val1);
sliceGetVal(mask, i, j, val2);
val1[0] = (ma * val1[0]) + (a * val2[0]);
switch(sin->mode){
case MRC_MODE_BYTE:
if (val1[0] > 255)
val1[0] = 255;
if (val1[0] < 0)
val1[0] = 0;
break;
case MRC_MODE_SHORT:
if (val1[0] > 32767)
val1[0] = 32767;
if (val1[0] < -32768)
val1[0] = -32768;
break;
case MRC_MODE_USHORT:
if (val1[0] > 65535)
val1[0] = 65535;
if (val1[0] < 0)
val1[0] = 0;
break;
}
if (sin->csize == 3){
val1[1] = (ma * val1[1]) + (a * val2[1]);
val1[2] = (ma * val1[2]) + (a * val2[2]);
}
slicePutVal(sin, i, j, val1);
}
return(0);
}
/*!
* Calculates the min, max, and mean of slice [s] and fills in the structure
* members. Returns -1 for an empty slice.
*/
int sliceMMM(Islice *s)
{
int i, j;
Ival val;
double tsum, sum;
float temp;
/* DNM 3/29/01: need to take magnitude for complex, and set mean to val */
sliceGetVal(s, 0, 0, val);
if (s->mode == MRC_MODE_COMPLEX_FLOAT){
temp = (val[0] * val[0]) + (val[1] * val[1]);
val[0] = (float)sqrt(temp);
}
s->max = s->min = val[0];
/* 5/23/05: Huh? sum needs to be 0 */
sum = 0.;
if ((!s->xsize) || (!s->ysize)){
b3dError(stderr, "sliceMMM: Warning, empty slice.\n");
return(-1);
}
for (j = 0; j < s->ysize; j++) {
tsum = 0.;
for (i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
if (s->mode == MRC_MODE_COMPLEX_FLOAT){
temp = (val[0] * val[0]) + (val[1] * val[1]);
val[0] = (float)sqrt(temp);
}
if (s->min > val[0])
s->min = val[0];
if (s->max < val[0])
s->max = val[0];
tsum += val[0];
}
sum += tsum;
}
s->mean = sum / (float)(s->xsize * s->ysize);
return(0);
}
/*!
* Adds the constant in the value array [c] to [slice]. Returns 0.
*/
int sliceAddConst(Islice *slice, Ival c)
{
Ival val;
unsigned int i, j;
unsigned int xsize = slice->xsize;
unsigned int ysize = slice->ysize;
if (slice->csize == 1 ){
for (j = 0; j < ysize; j++){
for (i = 0; i < xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] += c[0];
slicePutVal(slice, i, j, val);
}
}
return(0);
}
if (slice->csize == 2 ){
for (j = 0; j < ysize; j++){
for (i = 0; i < xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] += c[0];
val[1] += c[1];
slicePutVal(slice, i, j, val);
}
}
return(0);
}
if (slice->csize == 3 ){
for (j = 0; j < ysize; j++){
for (i = 0; i < xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] += c[0];
val[1] += c[1];
val[2] += c[2];
slicePutVal(slice, i, j, val);
}
}
return(0);
}
return(0);
}
/*!
* Multiples all values in [slice] by the constants in the value array [c].
* Returns 0.
*/
int sliceMultConst(Islice *slice, Ival c)
{
int i, j;
Ival val;
switch(slice->csize){
case 1:
for (j = 0; j < slice->ysize; j++){
for (i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] *= c[0];
slicePutVal(slice, i, j, val);
}
}
break;
case 2:
for (j = 0; j < slice->ysize; j++){
for (i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] *= c[0];
val[1] *= c[1];
slicePutVal(slice, i, j, val);
}
}
case 3:
for (j = 0; j < slice->ysize; j++){
for (i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] *= c[0];
val[1] *= c[1];
val[2] *= c[2];
slicePutVal(slice, i, j, val);
}
}
break;
}
return(0);
}
/*!
* Filters the FFT data in slice [sin] with a bandpass filter specified by
* [low] and [high], in cycles/pixel (range 0 to 0.5). The attenuation at
* frequency {rad} is the product of 1/(1+(rad/low)**3) if [low] > 0 and
* 1/1+(high/rad)**3) if high > 0. Returns -1 for mode not complex float.
*/
int mrc_bandpass_filter(struct MRCslice *sin, double low, double high)
{
int i, j;
double dist, mval, dx, dy, xscale, xadd, power = 3;
Ival val;
if (sin->mode != MRC_MODE_COMPLEX_FLOAT){
b3dError(stderr, " mrc_band_filter: Only complex float mode.\n");
return(-1);
}
/* Set up X coordinate scaling for odd or even (mirrored) FFTs */
if (sin->xsize % 2) {
xscale = 0.5 / (sin->xsize - 1.);
xadd = 0.;
} else {
xscale = 1. / sin->xsize;
xadd = -0.5;
}
for (j = 0; j < sin->ysize; j++)
for(i = 0; i < sin->xsize; i++){
dx = xscale * i + xadd;
dy = (float)j / sin->ysize - 0.5;
dist = sqrt(dx *dx + dy * dy);
if (low > 0.) {
if (dist < 0.00001)
mval = 0;
else
mval = 1 / (1 + pow(low / dist, power));
} else
mval = 1.0;
if (high > 0.0)
mval *= 1 / (1 + pow(dist / high, power));
sliceGetVal(sin, i, j, val);
val[0] *= mval;
val[1] *= mval;
slicePutVal(sin, i, j, val);
}
return(0);
}
/*!
* Returns a slice with the gradient of the input slice [sin], or NULL for
* error. The gradient is the absolute value of the difference
* between the current and next pixel, averaged over the X and Y direction.
*/
Islice *sliceGradient(Islice *sin)
{
Islice *s;
int i, j;
Ival val, nval, gval;
s = sliceCreate(sin->xsize, sin->ysize, sin->mode);
if (!s)
return(NULL);
/* Store gradient in X */
for(j = 0; j < sin->ysize; j++){
for(i = 0; i < sin->xsize - 1; i++){
sliceGetVal(sin, i, j, val);
sliceGetVal(sin, i+1, j, nval);
val[0] = nval[0] - val[0];
if (val[0] < 0)
val[0] *= -1;
slicePutVal(s, i, j, val);
}
}
/* Get gradient in Y and average with the one in X, copy last line */
for(i = 0; i < sin->xsize; i++){
for(j = 0; j < sin->ysize - 1; j++){
sliceGetVal(sin, i, j, val);
sliceGetVal(sin, i, j + 1, nval);
sliceGetVal(s, i, j, gval);
val[0] = nval[0] - val[0];
if (val[0] < 0)
val[0] *= -1;
gval[0] = (val[0] + gval[0]) / 2;
slicePutVal(s, i, j, gval);
}
sliceGetVal(s, i, j - 1, val);
slicePutVal(s, i, j, val);
}
/* Copy last column over too */
for(j = 0; j < sin->ysize; j++){
sliceGetVal(s, sin->xsize - 2, j, val);
slicePutVal(s, sin->xsize - 1, j, val);
}
sliceMMM(s);
return(s);
}
/*!
* Returns the magnitude of the pixel at [x], [y] in slice [s]: simply the
* value for one-channel data, the amplitude of complex data, or a weighted
* value for RGB data.
*/
float sliceGetPixelMagnitude(Islice *s, int x, int y)
{
Ival val;
float m = 0.0f;
sliceGetVal(s, x, y, val);
if (s->csize == 1)
return(val[0]);
if (s->csize == 2){
m = (val[0] * val[0]) + (val[1] * val[1]);
return((float)sqrt(m));
}
m = val[0] * 0.3f;
m += val[1] * 0.59f;
m += val[2] * 0.11f;
return(m);
}
/*!
* Extracts a subarea of slice [sl] into a new slice and returns the slice
* or NULL for error. The coordinates of the subarea are from [llx] to
* [urx] - 1 in X and [lly] to [ury] -1 in Y, inclusive. For areas where
* there is no image data, the slice mean is used to fill only the first
* channel.
*/
Islice *sliceBox(Islice *sl, int llx, int lly, int urx, int ury)
{
Islice *sout;
int i, j, x, y;
int nx, ny;
Ival val;
nx = urx-llx;
ny = ury-lly;
sout = sliceCreate(nx, ny, sl->mode);
if (!sout)
return(NULL);
for(j = lly, y = 0; y < ny; y++, j++)
for(i = llx, x = 0; x < nx; x++, i++){
sliceGetVal(sl, i, j, val);
slicePutVal(sout, x, y, val);
}
return(sout);
}
/*!
* Converts the data in [slice] from modes 0-3 or 6 to complex float. For
* modes 0-2 and 6, the value is placed in the real component and the imaginary
* component is set to 0. This should be slightly more efficient than
* @sliceNewMode is. Returns -1 for error.
*/
int sliceComplexFloat(Islice *slice)
{
Islice *tsl;
Ival val;
int i, j;
if (slice->mode > 3 && slice->mode != MRC_MODE_USHORT)
return(-1);
val[1] = 0;
tsl = sliceCreate(slice->xsize, slice->ysize, MRC_MODE_COMPLEX_FLOAT);
if (!tsl)
return(-1);
for(j = 0; j < slice->ysize; j++)
for(i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
slicePutVal(tsl, i, j, val);
}
free(slice->data.b);
slice->data.f = tsl->data.f;
slice->mode = MRC_MODE_COMPLEX_FLOAT;
free(tsl);
return(0);
}
/*!
* Converts the data in slice [s] from its current mode to [mode], allocating
* a new data array as needed. Complex values are converted to others by
* taking the magnitude. Values are converted to complex modes by setting the
* real component to the value, and the imaginary component to 0. RGB values
* are converted by taking a weighted sum of components. When converting to a
* mode with integer or byte values, the data are truncated to fit within the
* range of the new mode. Returns the new mode or -1 for error.
*/
int sliceNewMode(Islice *s, int mode)
{
Islice *ns;
Ival val;
int i, j;
int default_copy = 0;
int limit_val = 0;
float minval, maxval;
if (!s)
return(-1);
if (s->mode == mode)
return(mode);
ns = sliceCreate(s->xsize, s->ysize, mode);
/* Set up limiting values */
if (mode == MRC_MODE_BYTE || mode == MRC_MODE_RGB) {
limit_val = 1;
minval = 0.;
maxval = 255;
} else if (mode == MRC_MODE_SHORT) {
limit_val = 1;
minval = -32768.;
maxval = 32767.;
} else if (mode == MRC_MODE_USHORT) {
limit_val = 1;
minval = 0.;
maxval = 65535.;
}
if (!ns)
return(-1);
switch(s->mode){
case MRC_MODE_BYTE:
case MRC_MODE_SHORT:
case MRC_MODE_USHORT:
case MRC_MODE_FLOAT:
switch(mode){
case MRC_MODE_BYTE:
case MRC_MODE_SHORT:
case MRC_MODE_USHORT:
case MRC_MODE_FLOAT:
default_copy = 1;
break;
case MRC_MODE_COMPLEX_FLOAT:
case MRC_MODE_COMPLEX_SHORT:
val[1] = 0;
default_copy = 1;
break;
case MRC_MODE_RGB:
for(j = 0; j < s->ysize; j++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
if (limit_val)
val[0] = B3DMIN(maxval, B3DMAX(minval, val[0]));
val[2] = val[1] = val[0];
slicePutVal(ns, i, j, val);
}
break;
default:
default_copy = 1;
break;
}
break;
case MRC_MODE_COMPLEX_FLOAT:
case MRC_MODE_COMPLEX_SHORT:
switch(mode){
case MRC_MODE_BYTE:
case MRC_MODE_SHORT:
case MRC_MODE_USHORT:
case MRC_MODE_FLOAT:
for(j = 0; j < s->ysize; j++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
val[0] = (float)sqrt(val[0] * val[0] + val[1] * val[1]);
if (limit_val)
val[0] = B3DMIN(maxval, B3DMAX(minval, val[0]));
slicePutVal(ns, i, j, val);
}
break;
case MRC_MODE_COMPLEX_FLOAT:
case MRC_MODE_COMPLEX_SHORT:
default_copy = 1;
break;
case MRC_MODE_RGB:
for(j = 0; j < s->ysize; j++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
val[0] = (float)sqrt(val[0] * val[0] + val[1] * val[1]);
if (limit_val)
val[0] = B3DMIN(maxval, B3DMAX(minval, val[0]));
val[2] = val[1] = val[0];
slicePutVal(ns, i, j, val);
}
break;
}
break;
case MRC_MODE_RGB:
switch(mode){
case MRC_MODE_BYTE:
case MRC_MODE_SHORT:
case MRC_MODE_USHORT:
case MRC_MODE_FLOAT:
for(j = 0; j < s->ysize; j++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
val[0] = (val[0] * 0.3f) +
(val[1] * 0.59f) + (val[2] * 0.11f);
if (limit_val)
val[0] = B3DMIN(maxval, B3DMAX(minval, val[0]));
slicePutVal(ns, i, j, val);
}
break;
case MRC_MODE_COMPLEX_FLOAT:
case MRC_MODE_COMPLEX_SHORT:
for(j = 0; j < s->ysize; j++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
val[0] = (val[0] * 0.3f) +
(val[1] * 0.59f) + (val[2] * 0.11f);
val[1] = 0;
slicePutVal(ns, i, j, val);
}
break;
default:
default_copy = 1;
break;
}
break;
default:
default_copy = 1;
break;
}
if (default_copy){
for(j = 0; j < s->ysize; j++)
for(i = 0; i < s->xsize; i++){
sliceGetVal(s, i, j, val);
if (limit_val)
val[0] = B3DMIN(maxval, B3DMAX(minval, val[0]));
slicePutVal(ns, i, j, val);
}
}
free(s->data.b);
/* 2/3/07: switch from copying ns to s to just setting data and mode */
s->data.b = ns->data.b;
s->mode = mode;
free(ns);
return(mode);
}
/*!
* Converts the data in [slice] to float mode. For complex data, the magnitude
* is taken; for RGB data, a weighed sum of the components is taken. This
* should be slightly more efficient than @sliceNewMode is. Returns -1 for
* error.
*/
int sliceFloat(Islice *slice)
{
Islice *tsl;
Ival val;
int i, j;
switch(slice->mode){
case SLICE_MODE_BYTE:
case SLICE_MODE_SHORT:
tsl = sliceCreate(slice->xsize, slice->ysize, SLICE_MODE_FLOAT);
if (!tsl)
return(-1);
for(j = 0; j < slice->ysize; j++)
for(i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
slicePutVal(tsl, i, j, val);
}
free(slice->data.b);
slice->data.f = tsl->data.f;
slice->mode = SLICE_MODE_FLOAT;
free(tsl);
break;
case SLICE_MODE_FLOAT:
break;
case SLICE_MODE_COMPLEX_SHORT:
case SLICE_MODE_COMPLEX_FLOAT:
tsl = sliceCreate(slice->xsize, slice->ysize, SLICE_MODE_FLOAT);
if (!tsl)
return(-1);
for(j = 0; j < slice->ysize; j++)
for(i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] = (val[0] * val[0]) + (val[1] * val[1]);
val[0] = sqrt(val[0]);
slicePutVal(tsl, i, j, val);
}
free(slice->data.b);
slice->data.f = tsl->data.f;
slice->mode = SLICE_MODE_FLOAT;
free(tsl);
break;
case SLICE_MODE_RGB:
tsl = sliceCreate(slice->xsize, slice->ysize, SLICE_MODE_FLOAT);
if (!tsl)
return(-1);
for(j = 0; j < slice->ysize; j++)
for(i = 0; i < slice->xsize; i++){
sliceGetVal(slice, i, j, val);
val[0] = val[0] * 0.3f + val[1] * 0.59f + val[2] * 0.11f;
slicePutVal(tsl, i, j, val);
}
free(slice->data.b);
slice->data.f = tsl->data.f;
slice->mode = SLICE_MODE_FLOAT;
free(tsl);
break;
default:
return(-1);
}
return(0);
}
/* Read the required data volume */
Istack *grap_volume_read(MrcHeader *hin, ClipOptions *opt)
{
Istack *v;
Islice *s;
Ival val;
int i, j, k, x, y, z;
if (opt->dim == 2){
if (opt->iz == IP_DEFAULT) opt->iz = 0;
if (opt->iz2 == IP_DEFAULT) opt->iz2 = hin->nz - 1;
if (opt->iz2 == 0) opt->iz2 = opt->iz;
if (opt->iz2 < opt->iz) opt->iz2 = opt->iz;
opt->cz = ( opt->iz2 + opt->iz) / 2.;
opt->iz = opt->iz2 - opt->iz + 1;
}
if (opt->ix == IP_DEFAULT) opt->ix = hin->nx;
if (opt->iy == IP_DEFAULT) opt->iy = hin->ny;
if (opt->iz == IP_DEFAULT) opt->iz = hin->nz;
if (opt->cx == IP_DEFAULT) opt->cx = hin->nx / 2.;
if (opt->cy == IP_DEFAULT) opt->cy = hin->ny / 2.;
if (opt->cz == IP_DEFAULT) opt->cz = hin->nz / 2.;
/* Do not set opt->pad yet, just pad with current mean */
val[0] = opt->pad;
if (opt->pad == IP_DEFAULT)
val[0] = hin->amean;
val[1] = val[0];
val[2] = val[0];
/* Create volume and initialize to pad value. */
v = (Istack *)malloc(sizeof(Istack));
v->vol = (Islice **)malloc( opt->iz * sizeof(Islice *));
v->zsize = opt->iz;
for (k = 0; k < opt->iz; k++) {
v->vol[k] = sliceCreate(opt->ix, opt->iy, hin->mode);
if (!v->vol[k])
return(NULL);
for( j = 0; j < opt->iy; j++)
for(i = 0; i < opt->ix; i++)
slicePutVal(v->vol[k], i, j, val);
v->vol[k]->mean = hin->amean;
v->vol[k]->max = hin->amax;
v->vol[k]->min = hin->amin;
}
s = sliceCreate(hin->nx, hin->ny, hin->mode);
if (!s)
return(NULL);
/* Read slices in, copying just the part that is needed */
k = (int)floor(opt->cz - ((float)opt->iz * 0.5f));
/* printf("k = %d\n", k); */
for (z = 0; (k < hin->nz) && (z < opt->iz); k++, z++) {
if (k >= 0) {
if (mrc_read_slice((void *)s->data.b, hin->fp, hin, k, 'z'))
return (NULL);
j = (int)floor(opt->cy - opt->iy / 2.);
for (y = 0; (j < hin->ny) && (y < opt->iy); j++, y++) {
if (j >= 0) {
i = (int)floor(opt->cx - opt->ix / 2.);
x = 0;
if (i < 0) {
x = -i;
i = 0;
}
for (; (i < hin->nx) && (x < opt->ix); i++, x++) {
sliceGetVal(s, i, j, val);
slicePutVal(v->vol[z], x, y, val);
}
}
}
}
}
sliceFree(s);
return(v);
}