/**
* Text mode STL reader.
*
* The reader should be ablet to read some information even when the fil is
* truncated or otherwise broken without crashing.
*
* \returns no error code, it fails silently, but creates an intact (possibly incomplete) dataset
*/
int ETModelTextSTL::Load()
{
NTri = 2048;
tri = (ETTriangle*)calloc(NTri, sizeof(ETTriangle));
char buf[1024];
// read "solid name" (we already verified that);
for (;;) {
if (FEof()) break;
FGetS(buf, 1023);
char *src = buf;
if (Find(src, "solid")) break;
}
for (;;) {
char *src = buf;
for (;;) {
if (FEof()) break;
buf[0] = 0;
FGetS(buf, 1023); src = buf;
// read "facet normal ni nj nk"
if (Find(src, "facet normal")) break;
}
if (NTri==nTri) {
NTri += 2048;
tri = (ETTriangle*)realloc(tri, NTri*sizeof(ETTriangle));
}
ETTriangle &t = tri[nTri];
if (sscanf(src, "%f %f %f", &t.n.x, &t.n.y, &t.n.z)!=3) break;
if (!t.n.isFinite()) continue;
// read "outer loop"
FGetS(buf, 1023); src = buf;
if (!Find(src, "outer loop")) break;
// read "vertex x y z"
FGetS(buf, 1023); src = buf;
if (!Find(src, "vertex")) break;
if (sscanf(src, "%f %f %f", &t.p0.x, &t.p0.y, &t.p0.z)!=3) break;
if (!t.p0.isFinite()) continue;
// read "vertex x y z"
FGetS(buf, 1023); src = buf;
if (!Find(src, "vertex")) break;
if (sscanf(src, "%f %f %f", &t.p1.x, &t.p1.y, &t.p1.z)!=3) break;
if (!t.p1.isFinite()) continue;
// read "vertex x y z"
FGetS(buf, 1023); src = buf;
if (!Find(src, "vertex")) break;
if (sscanf(src, "%f %f %f", &t.p2.x, &t.p2.y, &t.p2.z)!=3) break;
if (!t.p2.isFinite()) continue;
// read "outer loop"
FGetS(buf, 1023); src = buf;
if (!Find(src, "endloop")) break;
// read "outer loop"
FGetS(buf, 1023); src = buf;
if (!Find(src, "endfacet")) break;
// don't increment the counter until we are sure that the triangle is read.
nTri++;
}
return 1;
}
int ConfigFile::_ReadEntry(const char *entry, char *buf, int bufSize,bool strip )
{
/*
功能：读取entry的值
参数：
entry[IN]：entry名称
buf[IN]：存放entry的值的缓冲区
bufSize[IN]：缓冲区长度
strip[IN]：去除空格标志
返回值：
成功返回读取的长度
失败返回-1
*/
char lineBuf[1024];
//memset(lineBuf,0,1024);
char *p, *cur;
int len;
cur = buf;
*cur = '\0';
len = -1;
while(FGetS(lineBuf,1023,fin))
{
if( isTitleLine( lineBuf ) ) // section fis ended
break;
p = textPos( lineBuf, entry ); // not equal this entry
if( p == 0 )
continue;
if( strip )
stripQuotationChar( p );
len = strlen(p);
if( bufSize-1 < len )
len = bufSize-1;
strncpy( cur, p, len );
cur[len] = 0;
break;
}
return len;
}
bool ConfigFile::gotoSection(const char *section )
{
/*
功能：移动文件指针到指定section的开始处
参数：
section[IN]：要查找的section
返回值：
找到并定位返回true
否则返回false
*/
char line[1024];
fseek(fin,0,SEEK_SET);
while( FGetS(line,1024,fin)!=NULL)
{
if( containTitle( line, section ) )
return true;
}
return false;
}
