// Helper function for reading PLY mesh file
bool Mesh::readNumPlyTris(FILE *&inFile, int& nTris)
{
bool bElementFound = false;
/* Get number of faces in mesh*/
for(;;)
{
char tempStr[1024];
fscanf(inFile, "%s", tempStr);
if (feof(inFile)) {
//MessageBox(NULL, "Reached End of File and string \"element face\" not found!\n",NULL, MB_ICONEXCLAMATION);
return false;
}
/* change tempStr to lower case */
ChangeStrToLower(tempStr);
if (bElementFound && !strncmp(tempStr, "face", 4))
break;
if (!strncmp(tempStr, "element", 7)) {
bElementFound = true;
continue;
}
}
fscanf(inFile, "%d", &nTris);
if (feof(inFile)) {
//MessageBox(NULL, "Reached End of File before list of vertices found!\n",NULL, MB_ICONEXCLAMATION);
return false;
}
return true;
}
// Helper function for reading PLY mesh file，读入字符ply
bool Mesh::readPlyHeader(FILE *&inFile)
{
char tempStr[1024];
// Read "ply" string
do
{
fscanf(inFile, "%s", tempStr);
if (feof(inFile))
{
MessageBox(NULL, "Reached End of File and the string \"ply\" NOT FOUND!!\n",
NULL, MB_ICONEXCLAMATION);
return false;
}
ChangeStrToLower(tempStr); // change tempStr to lower case
} while (strncmp(tempStr, "ply", 3));
// Read # of verts
if (!readNumPlyVerts(inFile, _numVerts))
{
return false;
}
// Read # of triangles
if (!readNumPlyTris(inFile, _numTriangles))
{
return false;
}
// get end_header,读取文件结束标志
do
{
fscanf(inFile, "%s", tempStr);
if (feof(inFile))
{
MessageBox(NULL, TEXT("Reached End of File and string \"end_header\" not found!\n"),
NULL, MB_ICONEXCLAMATION);
return false;
}
/* change tempStr to lower case */
ChangeStrToLower(tempStr);
} while (strncmp(tempStr, "end_header", 10));
////////// end of header
return true;
}
