void ObjLoader::ReadObjFileData(FILE* objFile) {
char buffer[256];
while (true)
{
int read = fscanf_s(objFile, "%s", buffer, sizeof(buffer));
if (read == EOF) break;
//if first part of the line is "v"
if (strcmp(buffer, "v") == 0) {
//printf("Found a Vertex:\n");
glm::vec3 vert;
fscanf_s(objFile, "%f %f %f\n", &vert.x, &vert.y, &vert.z);
objFileVerts.push_back(vert);
}
//if first part of the line is "vn"
else if (strcmp(buffer, "vn") == 0) {
//printf("Found a Vertex Normal:\n");
glm::vec3 normal;
fscanf_s(objFile, "%f %f %f\n", &normal.x, &normal.y, &normal.z);
objFileNormals.push_back(normal);
}
//if first part of the line is "f"
else if (strcmp(buffer, "f") == 0) {
//printf("Found f:\n");
fscanf_s(objFile, "%256[^\n]", buffer, sizeof(buffer));
std::string s(buffer);
std::stringstream stream(s);
std::string split;
std::vector<std::string> splits;
while (stream >> split)
splits.push_back(split);
std::vector<FaceVertexData> tmpFaceVerts;
for (int i = 0; i < splits.size(); i++)
tmpFaceVerts.push_back(ExtractFaceVertexData(splits[i]));
int i = 0;
do {
faceVerts.push_back(tmpFaceVerts[0]);
faceVerts.push_back(tmpFaceVerts[i + 1]);
faceVerts.push_back(tmpFaceVerts[i + 2]);
i++;
} while (i < tmpFaceVerts.size() - 2);
}
else {
}
}
}
void ObjLoader::ReadObjFileData(FILE* objFile)
{
char buffer[256];
while (true)
{
int read = fscanf_s(objFile, "%s", buffer, sizeof(buffer));
if (read == EOF) break;
// if the line contains a vertex
if (strcmp(buffer, "v") == 0)
{
glm::vec3 vert;
fscanf_s(objFile, "%f %f %f\n", &vert.x, &vert.y, &vert.z);
objFileVerts.push_back(vert);
}
// if the line contains a vertex normal
else if (strcmp(buffer, "vn") == 0)
{
glm::vec3 normal;
fscanf_s(objFile, "%f %f %f\n", &normal.x, &normal.y, &normal.z);
objFileNormals.push_back(normal);
}
// if the line contains a vertex texture coordinate
else if (strcmp(buffer, "vt") == 0)
{
glm::vec2 texCoord;
fscanf_s(objFile, "%f %f\n", &texCoord.x, &texCoord.y);
texCoord.y = 1 - texCoord.y;
objFileTexCoords.push_back(texCoord);
}
// if the line contains a face
else if (strcmp(buffer, "f") == 0)
{
//read the line, turn it into a std::string and put that in a stringstream
fscanf_s(objFile, "%256[^\n]", buffer, sizeof(buffer));
std::string s(buffer);
std::stringstream stream(s);
/* find each "word" in the stringstream (i.e. something like "1/2/3"
* and store it as 'split', also add each split to the 'splits' std::vec */
std::string split;
std::vector<std::string> splits;
while (stream >> split)
splits.push_back(split);
/* now just send each split to the function which works out what they contain
* and store what comes back in the faceVerts std::vector */
for (int i = 0; i < splits.size(); i++)
vertices.push_back(ExtractFaceVertexData(splits[i]));
}
}
