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reg_grow.sc
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reg_grow.sc
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/* tab:8
*
* reg_grow.sc - region growing algorithm
*
* "Copyright (c) 1994,1995 The Regents of the University of Maryland.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF MARYLAND BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* MARYLAND HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF MARYLAND SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF MARYLAND HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
*
* Authors: David A. Bader <dbader@umiacs.umd.edu>
* Joseph F. Ja'Ja' <joseph@umiacs.umd.edu>
* Institute for Advanced Computer Studies
* Department of Electrical Engineering
* AV Williams Building
* College Park, MD 20742
*
* Version: 1.0
* Creation Date: December 29, 1994
* Filename: reg_grow.sc
* History:
*/
#include "reg_grow.h"
#include "math_func.h"
#include "select_b.h"
#include "columnsort.h"
#include "radixsort.h"
#define border_pix(ii,jj,v,w,q,r,i,j) \
( \
((ii==0) && ((i)==0)) || \
((jj==0) && ((j)==0)) || \
((jj==w-1) && ((j)==r-1)) || \
((ii==v-1) && ((i)==q-1)) \
)
#if 0
/*************************************************************/
static inline void all_get_ghost_four(int ii, int jj,
int v, int w, int q, int r, int globArr[v][w]::[q][r] ,
int *ghostN , int *ghostS , int *ghostE , int *ghostW ,
int nil_elem)
/*************************************************************/
{
register int j;
/* Create Ghost Cells */
barrier();
if (ii>0)
bulk_get(ghostN, &(globArr[ii-1][jj][q-1][0]), r*sizeof(int));
else
for (j=0 ; j<r ; j++) ghostN[j] = nil_elem;
sync();
if (ii<v-1)
bulk_get(ghostS, &(globArr[ii+1][jj][0][0]), r*sizeof(int));
else
for (j=0 ; j<r ; j++) ghostS[j] = nil_elem;
sync();
if (jj>0)
for (j=0 ; j<q ; j++) ghostW[j] := globArr[ii][jj-1][j][r-1];
else
for (j=0 ; j<q ; j++) ghostW[j] = nil_elem;
sync();
if (jj<w-1)
for (j=0 ; j<q ; j++) ghostE[j] := globArr[ii][jj+1][j][0];
else
for (j=0 ; j<q ; j++) ghostE[j] = nil_elem;
sync();
barrier();
}
#endif
#define all_get_ghost_four(ii, jj, v, w, q, r, globArr, \
ghostN, ghostS, ghostE, ghostW, \
nil_elem) \
{ \
register int j; \
\
barrier(); \
\
if (ii>0) \
bulk_get(ghostN, &(globArr[ii-1][jj][q-1][0]), r*sizeof(int)); \
else \
for (j=0 ; j<r ; j++) ghostN[j] = nil_elem; \
sync(); \
\
if (ii<v-1) \
bulk_get(ghostS, &(globArr[ii+1][jj][0][0]), r*sizeof(int)); \
else \
for (j=0 ; j<r ; j++) ghostS[j] = nil_elem; \
sync(); \
\
if (jj>0) \
for (j=0 ; j<q ; j++) ghostW[j] := globArr[ii][jj-1][j][r-1]; \
else \
for (j=0 ; j<q ; j++) ghostW[j] = nil_elem; \
sync(); \
\
if (jj<w-1) \
for (j=0 ; j<q ; j++) ghostE[j] := globArr[ii][jj+1][j][0]; \
else \
for (j=0 ; j<q ; j++) ghostE[j] = nil_elem; \
sync(); \
\
barrier(); \
}
#if 0
/*************************************************************/
static inline void all_get_ghost_eight(int ii, int jj,
int v, int w, int q, int r, int globArr[v][w]::[q][r] ,
int *ghostN , int *ghostS , int *ghostE , int *ghostW ,
int *ghostNW , int *ghostNE , int *ghostSW , int *ghostSE ,
int nil_elem)
/*************************************************************/
{
/* Create Ghost Cells */
all_get_ghost_four(ii,jj,v,w,q,r,globArr,
ghostN, ghostS, ghostE, ghostW,
nil_elem);
*ghostNW = nil_elem;
*ghostNE = nil_elem;
*ghostSE = nil_elem;
*ghostSW = nil_elem;
if (ii>0) {
if (jj>0) *ghostNW := globArr[ii-1][jj-1][q-1][r-1];
if (jj<w-1) *ghostNE := globArr[ii-1][jj+1][q-1][0];
};
if (ii<v-1) {
if (jj>0) *ghostSW := globArr[ii+1][jj-1][0][r-1];
if (jj<w-1) *ghostSE := globArr[ii+1][jj+1][0][0];
};
sync();
barrier();
}
#endif
#define all_get_ghost_eight(ii, jj, v, w, q, r, globArr, \
ghostN, ghostS, ghostE, ghostW, \
ghostNW, ghostNE, ghostSW, ghostSE, \
nil_elem) \
{ \
\
all_get_ghost_four(ii,jj,v,w,q,r,globArr, \
ghostN, ghostS, ghostE, ghostW, \
nil_elem); \
\
*ghostNW = nil_elem; \
*ghostNE = nil_elem; \
*ghostSE = nil_elem; \
*ghostSW = nil_elem; \
\
if (ii>0) { \
if (jj>0) *ghostNW := globArr[ii-1][jj-1][q-1][r-1]; \
if (jj<w-1) *ghostNE := globArr[ii-1][jj+1][q-1][0]; \
}; \
\
if (ii<v-1) { \
if (jj>0) *ghostSW := globArr[ii+1][jj-1][0][r-1]; \
if (jj<w-1) *ghostSE := globArr[ii+1][jj+1][0][0]; \
}; \
\
sync(); \
\
barrier(); \
}
#if 0
/*************************************************************/
static inline void my_proc_nbr(int q, int r,
int tile[q][r], int pType[q][r],
int *ghostN, int *ghostS, int *ghostE, int *ghostW,
int ghostNW, int ghostNE, int ghostSW, int ghostSE,
int nil_elem,
register int i, register int j,
int *mask, int *nbrs)
/*************************************************************/
{
/* N */
switch (pType[i][j]) {
case 1:
case 2:
case 3:
if (ghostN[j] == nil_elem)
mask[0] = 0;
else
nbrs[0] = ghostN[j];
break;
default: nbrs[0] = tile[i-1][j];
}
/* S */
switch (pType[i][j]) {
case 7:
case 8:
case 9:
if (ghostS[j] == nil_elem)
mask[1] = 0;
else
nbrs[1] = ghostS[j];
break;
default: nbrs[1] = tile[i+1][j];
}
/* W */
switch (pType[i][j]) {
case 1:
case 4:
case 7:
if (ghostW[i] == nil_elem)
mask[2] = 0;
else
nbrs[2] = ghostW[i];
break;
default: nbrs[2] = tile[i][j-1];
}
/* E */
switch (pType[i][j]) {
case 3:
case 6:
case 9:
if (ghostE[i] == nil_elem)
mask[3] = 0;
else
nbrs[3] = ghostE[i];
break;
default: nbrs[3] = tile[i][j+1];
}
/* NW */
switch (pType[i][j]) {
case 1:
if (ghostNW == nil_elem)
mask[4] = 0;
else
nbrs[4] = ghostNW;
break;
case 2:
case 3:
if (ghostN[j-1] == nil_elem)
mask[4] = 0;
else
nbrs[4] = ghostN[j-1];
break;
case 4:
case 7:
if (ghostW[i-1] == nil_elem)
mask[4] = 0;
else
nbrs[4] = ghostW[i-1];
break;
default: nbrs[4] = tile[i-1][j-1];
}
/* NE */
switch (pType[i][j]) {
case 3:
if (ghostNE == nil_elem)
mask[5] = 0;
else
nbrs[5] = ghostNE;
break;
case 1:
case 2:
if (ghostN[j+1] == nil_elem)
mask[5] = 0;
else
nbrs[5] = ghostN[j+1];
break;
case 6:
case 9:
if (ghostE[i-1] == nil_elem)
mask[5] = 0;
else
nbrs[5] = ghostE[i-1];
break;
default: nbrs[5] = tile[i-1][j+1];
}
/* SW */
switch (pType[i][j]) {
case 7:
if (ghostSW == nil_elem)
mask[6] = 0;
else
nbrs[6] = ghostSW;
break;
case 8:
case 9:
if (ghostS[j-1] == nil_elem)
mask[6] = 0;
else
nbrs[6] = ghostS[j-1];
break;
case 1:
case 4:
if (ghostW[i+1] == nil_elem)
mask[6] = 0;
else
nbrs[6] = ghostW[i+1];
break;
default: nbrs[6] = tile[i+1][j-1];
}
/* SE */
switch (pType[i][j]) {
case 9:
if (ghostSE == nil_elem)
mask[7] = 0;
else
nbrs[7] = ghostSE;
break;
case 7:
case 8:
if (ghostS[j+1] == nil_elem)
mask[7] = 0;
else
nbrs[7] = ghostS[j+1];
break;
case 3:
case 6:
if (ghostE[i+1] == nil_elem)
mask[7] = 0;
else
nbrs[7] = ghostE[i+1];
break;
default: nbrs[7] = tile[i+1][j+1];
}
}
#endif
#define my_proc_nbr(q, r, tile, pType, \
ghostN, ghostS, ghostE, ghostW, \
ghostNW, ghostNE, ghostSW, ghostSE, \
nil_elem, i, j, mask, nbrs) \
\
switch (pType[i][j]) { \
case 1: \
case 2: \
case 3: \
if (ghostN[j] == nil_elem) \
mask[0] = 0; \
else \
nbrs[0] = ghostN[j]; \
break; \
default: nbrs[0] = tile[i-1][j]; \
} \
switch (pType[i][j]) { \
case 7: \
case 8: \
case 9: \
if (ghostS[j] == nil_elem) \
mask[1] = 0; \
else \
nbrs[1] = ghostS[j]; \
break; \
default: nbrs[1] = tile[i+1][j]; \
} \
switch (pType[i][j]) { \
case 1: \
case 4: \
case 7: \
if (ghostW[i] == nil_elem) \
mask[2] = 0; \
else \
nbrs[2] = ghostW[i]; \
break; \
default: nbrs[2] = tile[i][j-1]; \
} \
switch (pType[i][j]) { \
case 3: \
case 6: \
case 9: \
if (ghostE[i] == nil_elem) \
mask[3] = 0; \
else \
nbrs[3] = ghostE[i]; \
break; \
default: nbrs[3] = tile[i][j+1]; \
} \
switch (pType[i][j]) { \
case 1: \
if (ghostNW == nil_elem) \
mask[4] = 0; \
else \
nbrs[4] = ghostNW; \
break; \
case 2: \
case 3: \
if (ghostN[j-1] == nil_elem) \
mask[4] = 0; \
else \
nbrs[4] = ghostN[j-1]; \
break; \
case 4: \
case 7: \
if (ghostW[i-1] == nil_elem) \
mask[4] = 0; \
else \
nbrs[4] = ghostW[i-1]; \
break; \
default: nbrs[4] = tile[i-1][j-1]; \
} \
switch (pType[i][j]) { \
case 3: \
if (ghostNE == nil_elem) \
mask[5] = 0; \
else \
nbrs[5] = ghostNE; \
break; \
case 1: \
case 2: \
if (ghostN[j+1] == nil_elem) \
mask[5] = 0; \
else \
nbrs[5] = ghostN[j+1]; \
break; \
case 6: \
case 9: \
if (ghostE[i-1] == nil_elem) \
mask[5] = 0; \
else \
nbrs[5] = ghostE[i-1]; \
break; \
default: nbrs[5] = tile[i-1][j+1]; \
} \
switch (pType[i][j]) { \
case 7: \
if (ghostSW == nil_elem) \
mask[6] = 0; \
else \
nbrs[6] = ghostSW; \
break; \
case 8: \
case 9: \
if (ghostS[j-1] == nil_elem) \
mask[6] = 0; \
else \
nbrs[6] = ghostS[j-1]; \
break; \
case 1: \
case 4: \
if (ghostW[i+1] == nil_elem) \
mask[6] = 0; \
else \
nbrs[6] = ghostW[i+1]; \
break; \
default: nbrs[6] = tile[i+1][j-1]; \
} \
switch (pType[i][j]) { \
case 9: \
if (ghostSE == nil_elem) \
mask[7] = 0; \
else \
nbrs[7] = ghostSE; \
break; \
case 7: \
case 8: \
if (ghostS[j+1] == nil_elem) \
mask[7] = 0; \
else \
nbrs[7] = ghostS[j+1]; \
break; \
case 3: \
case 6: \
if (ghostE[i+1] == nil_elem) \
mask[7] = 0; \
else \
nbrs[7] = ghostE[i+1]; \
break; \
default: nbrs[7] = tile[i+1][j+1]; \
}
/*************************************************************/
void all_get_pType(int v, int w, int q, int r,
int pType[v][w]::[q][r])
/*************************************************************/
/* Fill pType with [1,9] for each pixel:
1 | 2 | 3
-----------
4 | 5 | 6
-----------
7 | 8 | 9
*/
{
register int
i,
j,
ii,
jj;
int (*locP)[r];
ii = mapRow(v,w,MYPROC);
jj = mapCol(v,w,MYPROC);
locP = tolocal(pType[ii][jj]);
all_init_timer();
all_start_timer();
for (i=1 ; i<q-1 ; i++)
for (j=1 ; j<r-1 ; j++)
locP[i][j] = 5;
for (j=1 ; j<r-1 ; j++) {
locP[0][j] = 2;
locP[q-1][j] = 8;
}
for (i=1 ; i<q-1 ; i++) {
locP[i][0] = 4;
locP[i][r-1] = 6;
}
locP[0][0] = 1;
locP[0][r-1] = 3;
locP[q-1][0] = 7;
locP[q-1][r-1] = 9;
all_stop_timer("Get pType");
all_print_timer(outfile);
}
/*************************************************************/
void all_crop_border(int v, int w, int q, int r,
int X[v][w]::[q][r], int Y[v][w]::[q][r],
int crop)
/*************************************************************/
{
register int
i, /* Loop variable */
j, /* Loop variable */
ii, /* MYPROC's row */
jj, /* MYPROC's column */
row,
col;
int (*locX)[r],
(*locY)[r];
barrier();
ii = mapRow(v,w,MYPROC);
jj = mapCol(v,w,MYPROC);
locX = tolocal(X[ii][jj]);
locY = tolocal(Y[ii][jj]);
all_init_timer();
all_start_timer();
for (i=0 ; i<q ; i++)
for (j=0 ; j<r ; j++) {
row = ii*q + i;
col = jj*r + j;
if ( (row < crop) || (row >= q*v - crop) ||
(col < crop) || (col >= r*w - crop) )
locY[i][j] = 0;
else
locY[i][j] = locX[i][j];
}
barrier();
all_stop_timer("Crop Border");
all_print_timer(outfile);
}
/*************************************************************/
void all_filter_SNF(int v, int w, int q, int r,
int X[v][w]::[q][r], int k,
int Y[v][w]::[q][r],
int pType[v][w]::[q][r],
int steps, int epsilon)
/*************************************************************/
/* Perform SNF on interior points (do not modify 1-pixel image
border).
*/
{
register int
i, /* Loop variable */
j, /* Loop variable */
t,
d0, d1, d2,
ii, /* MYPROC's row */
jj, /* MYPROC's column */
sum;
int (*locX)[r],
(*locY)[r],
(*locP)[r],
(*locSNFin)[r],
ghostN[r], ghostS[r], ghostE[q], ghostW[q],
ghostNE, ghostSE, ghostSW, ghostNW,
temp[8],
mask[8],
tot,
state[q][r], /* 0=border, 1=non-fixed, 2=fixed1, 3=fixed2, 4=fixed */
fp,
myFP,
tempFP,
step,
pfstate;
int SNFin[v][w]::[q][r];
double pfixed,
limit,
lastpf;
char buf[MAXLEN];
barrier();
ii = mapRow(v,w,MYPROC);
jj = mapCol(v,w,MYPROC);
locX = tolocal(X[ii][jj]);
locY = tolocal(Y[ii][jj]);
locP = tolocal(pType[ii][jj]);
locSNFin = tolocal(SNFin[ii][jj]);
all_init_timer();
all_start_timer();
for (i=0 ; i<q ; i++)
for (j=0 ; j<r ; j++) {
state[i][j] = !border_pix(ii,jj,v,w,q,r,i,j);
locSNFin[i][j] = locX[i][j];
}
tot = ((q*v)-2) * ((r*w)-2);
/* constants */
limit = 100.0;
pfixed = 0.0;
/* pfstate is the number of iterations that pfixed has not changed.
After 3 iterations of no change, stop iterating. */
pfstate = 0;
all_stop_timer("SNF Initialization");
for (step=1 ; ((step<=steps)&&(pfixed<limit)&&(pfstate<3)) ; step++) {
/* CHECK */
myFP = 0;
/* Get copy of input image */
if (step > 1)
for (i=0 ; i<q ; i++)
for (j=0 ; j<r ; j++)
locSNFin[i][j] = locY[i][j];
all_start_timer();
/******************************************************/
/* Create Ghost Cells for SNF input image */
all_get_ghost_eight(ii,jj,v,w,q,r,SNFin,
ghostN, ghostS, ghostE, ghostW,
&ghostNW, &ghostNE, &ghostSW, &ghostSE,
NIL);
/********************************************************/
for (i=0 ; i<q ; i++)
for (j=0 ; j<r ; j++) {
d0 = locSNFin[i][j];
if ((state[i][j]>0) && (state[i][j]<4)) {
for (t=0 ; t<8 ; t++)
mask[t] = 1;
my_proc_nbr(q, r, locSNFin, locP,
ghostN, ghostS, ghostE, ghostW,
ghostNW, ghostNE, ghostSW, ghostSE,
NIL, i, j, mask, temp);
sum = (d0 << 2) + 2;
d1 = temp[2];
d2 = temp[3];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)
sum += d1;
}
else {
if (d2 <= epsilon)
sum += d2;
}
else
if (d1 < d2) {
if (d2 >= -epsilon)
sum += d2;
}
else {
if (d1 >= -epsilon)
sum += d1;
}
d1 = temp[1];
d2 = temp[0];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)
sum += d1;
}
else {
if (d2 <= epsilon)
sum += d2;
}
else
if (d1 < d2) {
if (d2 >= -epsilon)
sum += d2;
}
else {
if (d1 >= -epsilon)
sum += d1;
}
d1 = temp[7];
d2 = temp[4];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)
sum += d1;
}
else {
if (d2 <= epsilon)
sum += d2;
}
else
if (d1 < d2) {
if (d2 >= -epsilon)
sum += d2;
}
else {
if (d1 >= -epsilon)
sum += d1;
}
d1 = temp[6];
d2 = temp[5];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)
sum += d1;
}
else {
if (d2 <= epsilon)
sum += d2;
}
else
if (d1 < d2) {
if (d2 >= -epsilon)
sum += d2;
}
else {
if (d1 >= -epsilon)
sum += d1;
}
locY[i][j] = sum>>2;
tempFP = (locY[i][j] == d0);
myFP += tempFP;
if (tempFP) {
switch (state[i][j]) {
case 1:
case 2:
case 3:
state[i][j]++;
break;
default: fprintf(stderr,
"ERROR; default case reached\n");
}
}
else {
switch (state[i][j]) {
case 1:
break;
case 2:
case 3:
state[i][j] = 1;
break;
default: fprintf(stderr,
"ERROR; default case reached\n");
}
};
}
else {
locY[i][j] = d0;
if (state[i][j]==4) myFP++;
}
}
sprintf(buf,"SNF iteration %3d",step);
all_stop_timer(buf);
fp = all_reduce_to_all_add(myFP);
lastpf = pfixed;
pfixed = 100.0 * fp / tot;
if (lastpf==pfixed)
pfstate++;
else
pfstate=0;
if (RESULTS)
on_one
fprintf(outfile,"SNF3x3 epsilon= %3d step= %2d fixed= %8.4f\n"
,epsilon,step,pfixed);
}
barrier();
all_print_timer(outfile);
}
/*************************************************************/
void all_filter_SNF_reclass(int v, int w, int q, int r,
int X[v][w]::[q][r], int k,
int Sel[v][w]::[q][r],
int Y[v][w]::[q][r],
int pType[v][w]::[q][r],
int epsilon)
/*************************************************************/
/* Perform SNF on interior points (do not modify 1-pixel image
border).
*/
{
register int
i, /* Loop variable */
j, /* Loop variable */
d0, d1, d2,
x0,
ii, /* MYPROC's row */
jj, /* MYPROC's column */
sum;
int (*locX)[r],
(*locY)[r],
(*locSel)[r],
(*locP)[r],
ghostN[r], ghostS[r], ghostE[q], ghostW[q],
ghostNE, ghostSE, ghostSW, ghostNW,
selN[r], selS[r], selE[q], selW[q],
selNE, selSE, selSW, selNW,
temp_x[8],
temp_sel[8],
mask[8];
barrier();
ii = mapRow(v,w,MYPROC);
jj = mapCol(v,w,MYPROC);
locX = tolocal(X[ii][jj]);
locY = tolocal(Y[ii][jj]);
locP = tolocal(pType[ii][jj]);
locSel = tolocal(Sel[ii][jj]);
all_init_timer();
all_start_timer();
/******************************************************/
/* Create Ghost Cells for SNF selection image */
all_get_ghost_eight(ii,jj,v,w,q,r,Sel,
selN, selS, selE, selW,
&selNW, &selNE, &selSW, &selSE,
NIL);
/********************************************************/
/* Create Ghost Cells for SNF input image */
all_get_ghost_eight(ii,jj,v,w,q,r,X,
ghostN, ghostS, ghostE, ghostW,
&ghostNW, &ghostNE, &ghostSW, &ghostSE,
NIL);
/********************************************************/
for (i=0 ; i<q ; i++)
for (j=0 ; j<r ; j++) {
if (!border_pix(ii,jj,v,w,q,r,i,j)) {
my_proc_nbr(q, r, locX, locP,
ghostN, ghostS, ghostE, ghostW,
ghostNW, ghostNE, ghostSW, ghostSE,
NIL, i, j, mask, temp_x);
my_proc_nbr(q, r, locSel, locP,
selN, selS, selE, selW,
selNW, selNE, selSW, selSE,
NIL, i, j, mask, temp_sel);
x0 = locX[i][j];
sum = (x0 << 2) + 2;
d0 = locSel[i][j];
d1 = temp_sel[2];
d2 = temp_sel[3];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)
sum += temp_x[2] - x0;
}
else {
if (d2 <= epsilon)
sum += temp_x[3] - x0;
}
else
if (d1 < d2) {
if (d2 >= -epsilon)
sum += temp_x[3] - x0;
}
else {
if (d1 >= -epsilon)
sum += temp_x[2] - x0;
}
d1 = temp_sel[1];
d2 = temp_sel[0];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)
sum += temp_x[1] - x0;
}
else {
if (d2 <= epsilon)
sum += temp_x[0] - x0;
}
else
if (d1 < d2) {
if (d2 >= -epsilon)
sum += temp_x[0] - x0;
}
else {
if (d1 >= -epsilon)
sum += temp_x[1] - x0;
}
d1 = temp_sel[7];
d2 = temp_sel[4];
if ((d1-=d0) && (d2-=d0) && (d1+d2))
if (d1+d2 > 0)
if (d1 < d2) {
if (d1 <= epsilon)