OBJ-Parser

C++ library that parses .obj files into a more usable format

Current Progress

• Parsing lines starting with v, vt, vn, and f
• Parsing up to 4 vertex faces (converting 4 vertex faces into two 3 vertex faces)

How to use

First make sure you include the library, after that:

• Create a STL vector of type p_face
• Add the path to the .obj you wish to parse as a string

Note: make sure to replace each \ with \\ in the path to avoid any bugs

vector<p_face> vec;
string path = "C:\\path\\model.obj";

After you're done, call getVertices and pass the variables we just created

getVertices(path,vec);

Now the vector vec contains the parsed data from your .obj file

Using parsed data

To access a specific vertex inside a specific face from our previously defined STL vector vec, simply do the following:

vec[i].vertex[j];

i here refers to the face and j refers to a vertex inside the face. Now to access the vertex data (Position, Texture, or Normal). Simply write one of the following depending on the vertex data you need:

vec[i].vertex[j].vecPos;
vec[i].vertex[j].vecTex;
vec[i].vertex[j].vecNormal;

All of vecPos, vecTex, and vecNormal are of the same type and accessing their co-ordinates is fairly simple, we'll demonstrate on vecPos.

vec[i].vertex[j].vecPos.x;
vec[i].vertex[j].vecPos.y;
vec[i].vertex[j].vecPos.z;

Now you're all set to use the library.

Some Extra Information

Convention:

• For datatypes created within the library, I used a prefix p_ before the datatype name (i.e p_face, p_vertex, p_vec3)

Purpose for creating this library:

• Using it with OpenGL for rendering