benkyd/tinyobjloader
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Parse material name.

Browse Source
This commit is contained in:
Syoyo Fujita
2016-05-24 13:37:13 +09:00
parent 8c03771aac
commit de79540879
2 changed files with 60 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
experimental/optimized-parse.cc
View File

@@ -269,6 +269,23 @@ static inline int until_space(const char *token)
return p - token;
}
static inline int length_until_newline(const char *token, int n)
{
int len = 0;
// Assume token[n-1] = '\0'
for (len = 0; len < n -1; len++) {
if (token[len] == '\n') {
break;
}
if ((token[len] == '\r') && ((len < (n-2)) && (token[len+1] != '\n'))) {
break;
}
}
return len;
}
// http://stackoverflow.com/questions/5710091/how-does-atoi-function-in-c-work
static inline int my_atoi( const char *c ) {
int value = 0;
@@ -603,8 +620,11 @@ typedef struct
//std::vector<vertex_index> f;
const char* group_name;
unsigned int group_name_len;
const char* object_name;
unsigned int object_name_len;
const char* material_name;
unsigned int material_name_len;
CommandType type;
} Command;
@@ -710,13 +730,7 @@ static bool parseLine(Command *command, const char *p, size_t p_len)
// use mtl
if ((0 == strncmp(token, "usemtl", 6)) && IS_SPACE((token[6]))) {
char namebuf[8192];
token += 7;
#ifdef _MSC_VER
sscanf_s(token, "%s", namebuf, (unsigned)_countof(namebuf));
#else
sscanf(token, "%s", namebuf);
#endif
//int newMaterialId = -1;
//if (material_map.find(namebuf) != material_map.end()) {
@@ -731,15 +745,18 @@ static bool parseLine(Command *command, const char *p, size_t p_len)
//command->material_name = .insert(command->material_name->end(), namebuf, namebuf + strlen(namebuf));
//command->material_name->push_back('\0');
skip_space(&token);
command->material_name = token;
command->material_name_len = length_until_newline(token, p_len - (token - p));
command->type = COMMAND_USEMTL;
return true;
}
#if 0
// load mtl
if ((0 == strncmp(token, "mtllib", 6)) && IS_SPACE((token[6]))) {
char namebuf[TINYOBJ_SSCANF_BUFFER_SIZE];
// By specification, `mtllib` should be appaar only once in .obj
char namebuf[8192];
token += 7;
#ifdef _MSC_VER
sscanf_s(token, "%s", namebuf, (unsigned)_countof(namebuf));
@@ -747,28 +764,28 @@ static bool parseLine(Command *command, const char *p, size_t p_len)
sscanf(token, "%s", namebuf);
#endif
std::string err_mtl;
std::vector<material_t> materials;
bool ok = (*readMatFn)(namebuf, &materials, &material_map, &err_mtl);
if (err) {
(*err) += err_mtl;
}
//std::string err_mtl;
//std::vector<material_t> materials;
//bool ok = (*readMatFn)(namebuf, &materials, &material_map, &err_mtl);
//if (err) {
// (*err) += err_mtl;
//}
if (!ok) {
return false;
}
//if (!ok) {
// return false;
//}
if (callback.mtllib_cb) {
callback.mtllib_cb(user_data, &materials.at(0),
static_cast<int>(materials.size()));
}
//if (callback.mtllib_cb) {
// callback.mtllib_cb(user_data, &materials.at(0),
// static_cast<int>(materials.size()));
//}
continue;
return true;
}
#endif
// group name
if (token[0] == 'g' && IS_SPACE((token[1]))) {
#if 0
ShortString names[16];
int num_names = 0;
@@ -782,35 +799,24 @@ static bool parseLine(Command *command, const char *p, size_t p_len)
assert(num_names > 0);
//int name_idx = 0;
int name_idx = 0;
// names[0] must be 'g', so skip the 0th element.
if (num_names > 1) {
//name_idx = 1;
name_idx = 1;
}
#endif
token += 2;
//command->group_name->assign(names[name_idx]);
command->group_name = token;
command->group_name_len = length_until_newline(token, p_len - (token - p));
command->type = COMMAND_G;
//if (callback.group_cb) {
// if (names.size() > 1) {
// // create const char* array.
// std::vector<const char *> tmp(names.size() - 1);
// for (size_t j = 0; j < tmp.size(); j++) {
// tmp[j] = names[j + 1].c_str();
// }
// callback.group_cb(user_data, &tmp.at(0),
// static_cast<int>(tmp.size()));
// } else {
// callback.group_cb(user_data, NULL, 0);
// }
//}
return true;
}
// object name
if (token[0] == 'o' && IS_SPACE((token[1]))) {
#if 0
// @todo { multiple object name? }
char namebuf[8192];
token += 2;
@@ -820,12 +826,12 @@ static bool parseLine(Command *command, const char *p, size_t p_len)
sscanf(token, "%s", namebuf);
#endif
//if (callback.object_cb) {
// callback.object_cb(user_data, name.c_str());
//}
#endif
token += 2;
//command->object_name->insert(command->object_name->end(), namebuf, namebuf + strlen(namebuf));
//command->object_name->push_back('\0');
command->object_name = token;
command->object_name_len = length_until_newline(token, p_len - (token - p));
command->type = COMMAND_O;
return true;
@@ -879,12 +885,10 @@ bool parse(std::vector<float, lt::allocator<float>> &vertices, std::vector<float
auto t1 = std::chrono::high_resolution_clock::now();
std::atomic<size_t> newline_counter(0);
std::vector<LineInfo, lt::allocator<LineInfo>> line_infos[kMaxThreads];
for (size_t t = 0; t < static_cast<size_t>(num_threads); t++) {
// Pre allocate enough memory. len / 1024 / num_threads is just a heuristic value.
line_infos[t].reserve(len / 1024 / num_threads);
// Pre allocate enough memory. len / 128 / num_threads is just a heuristic value.
line_infos[t].reserve(len / 128 / num_threads);
}
std::chrono::duration<double, std::milli> ms_linedetection;
@@ -1049,7 +1053,7 @@ bool parse(std::vector<float, lt::allocator<float>> &vertices, std::vector<float
vertices.reserve(num_v * 3);
normals.reserve(num_vn * 3);
texcoords.reserve(num_vt * 2);
faces.reserve(num_f);
faces.reserve(num_f*3*6); // 3*6 = heuristic value.
for (size_t t = 0; t < num_threads; t++) {
for (size_t i = 0; i < commands[t].size(); i++) {