/* ----------------------------------------------------------------
* 功 能：将字符串解包为TLV格式数据
* 输入参数：szBuf 输入字符串
* iBufLen 输入字符串长度
* 输出参数：pTLV TLV格式数据
* 返 回 值：0 成功； -1 失败
* 作 者：fengwei
* 日 期：2012-9-24
* 调用说明：UnpackTLV(pTLV, szBuf, iLen)
* 修改日志：修改日期 修改者 修改内容简述
* ----------------------------------------------------------------
*/
int UnpackTLV(T_TLVStru *pTLV, char* szBuf, int iBufLen)
{
int i, iIndex, iLen;
char szTagBuf[MAX_TAG_LEN+1];
T_TLVData *pData;
iIndex = 0;
i = 0;
while (iIndex < iBufLen)
{
pData = pTLV->tTLVData + i;
iLen = _get_tag(szBuf+iIndex, pTLV->iTagType, pData->szTag);
if (iLen == 0)
{
WriteLog(ERROR, "unpack tlv Tag error");
return FAIL;
}
iIndex += iLen;
iLen = _get_len(szBuf+iIndex, pTLV->iLenType, &(pData->iLen));
if (iLen == 0)
{
WriteLog(ERROR, "unpack tlv len error");
return FAIL;
}
iIndex += iLen;
iLen = _get_value(szBuf+iIndex, pData->iLen, pTLV->iValueType,
pData->szValue);
if (iLen < 0)
{
WriteLog(ERROR, "unpack tlv value error");
return FAIL;
}
iIndex += iLen;
pData->iFlag = DATA_NOTNULL;
i++;
}
return SUCC;
}
int xs_trans::Construct(int num, double *x, double *y, double minb) {
long int cur, ll, dyl;
int line, num_int, num_prev_int, jj, rc;
double len_now, len_prev, dy, c2, ccor;
_num_pts = num;
_record_into_int(_num_pts, &x[0], &(y[0]), UNIT);
rc = _quick_check();
if ( rc == -1 ) return (-1);
#ifdef DBGSPLINE
printf("original values\n");
for (int jj=0; jj<_num_pts; jj++) {
printf("=1= %.4f %.4f\n", x[jj], y[jj]);
}
printf("converted to int\n");
for (int jj=0; jj<_num_pts; jj++) {
printf("=2= %ld %ld\n", _xxin[jj], _yyin[jj]);
}
#endif
_num_pts = _cmethod(ANG_THRESH);
#ifdef DBGSPLINE
printf("after compression\n");
for (int jj=0; jj<_num_pts; jj++) {
printf("=3= %ld %ld\n", _rxx[jj], _ryy[jj]);
}
#endif
_find_min_max();
_num_segs = _insert2segs();
qsort(_segs, _num_segs, sizeof(segment), mycompare);
// initialize the rest
_init_internal();
// find min y, if odd # of intersection, skip
cur = _min_y;
while (1) {
num_int = _find_intersects(cur, &_working[0]);
len_now = _get_len(num_int, &_working[0], UNIT);
if ( num_int % 2 == 0 && len_now > minb ) break; // another magic number
// if ( num_int % 2 == 0 || num_int == 1 ) break;
cur += YGRID;
}
// first value
line = 0;
_my_yy[line] = (double)cur *UNIT;
_my_aa[line] = 0.0;
_my_pp[line] = 0.0;
_my_cc[line] = 0.0;
for (jj=0; jj<num_int; jj+=2) {
_my_pp[line] += _working[jj+1]-_working[jj];
}
_my_pp[line] *= UNIT;
_my_ll[line] = _my_pp[line];
// store the previous
for (jj=0; jj<num_int; jj++) _prev[jj] = _working[jj];
num_prev_int = num_int;
// get ready
line++;
ll = cur;
cur += YGRID;
// work out the rest
for (; cur < _max_y; cur+=YGRID) {
num_int = _find_intersects(cur, &_working[0]);
if (num_int % 2 == 1 ) continue; // skip odd number of intersections
len_now = _get_len(num_int, &_working[0],UNIT);
len_prev = _get_len(num_prev_int, &_prev[0], UNIT);
dyl = cur - ll;
dy = (double)dyl*UNIT;
c2 = len_prev*dy*dy/2.0 + (len_now-len_prev)*dy*dy/6.0;
ccor = _my_aa[line-1]*dy;
_my_yy[line ] = (double)cur* UNIT;
_my_aa[line] = _my_aa[line-1] + dy*(len_now+len_prev)/2.0;
_my_pp[line] = _my_pp[line-1] + _get_pp(num_int, &_working[0], num_prev_int, &_prev[0], dyl, UNIT);
_my_ll[line] = len_now;
_my_cc[line] = _my_cc[line-1] + ccor + c2;
// get ready for the next one
line++;
ll = cur;
for (jj=0; jj<num_int; jj++) _prev[jj] = _working[jj];
num_prev_int = num_int;
}
_num_samples = line;
#ifdef DBGSPLINE
printf("sampling dense\n");
for (int jj=0; jj<_num_samples; jj++) {
printf("=4= %.4e %.4e %.4e %.4e %.4e\n", _my_aa[jj], _my_ll[jj],_my_pp[jj],_my_cc[jj],_my_yy[jj]);
}
#endif
// coarse sampling
_final_samples=0;
for (jj=0; jj<_num_samples; jj+=SGRID) {
_aa[_final_samples] = _my_aa[jj];
_ll[_final_samples] = _my_ll[jj];
_pp[_final_samples] = _my_pp[jj];
_cc[_final_samples] = _my_cc[jj];
_yy[_final_samples] = _my_yy[jj];
_final_samples++;
}
// add the last one, if it's not too close
if ( jj - 2*SGRID/3 < _num_samples ) {
_aa[_final_samples] = _my_aa[_num_samples-1];
_ll[_final_samples] = _my_ll[_num_samples-1];
_pp[_final_samples] = _my_pp[_num_samples-1];
_cc[_final_samples] = _my_cc[_num_samples-1];
_yy[_final_samples] = _my_yy[_num_samples-1];
_final_samples++;
}
#ifdef DBGSPLINE
printf("sampling coarse\n");
for (int jj=0; jj<_final_samples; jj++) {
printf("=5= %.4e %.4e %.4e %.4e %.4e\n", _aa[jj], _ll[jj],_pp[jj],_cc[jj],_yy[jj]);
}
#endif
// scale y as depth
for (jj=1; jj<_final_samples; jj++) _yy[jj] -= _yy[0];
_yy[0] = 0.0;
return 0;
}
