Update obj.cpp

src/obj.cpp

@@ -1,71 +1,49 @@
 #include <iostream>
 #include <types/model.h>
 
-Vector3 ParseVertexCoordinatesFromOBJ(std::istringstream& stream) {
-    float x, y, z;
-    stream >> x >> y >> z;
-    return {x,y,z};
-}
-
-Vector2 ParseVertexTextureCoordinatesFromOBJ(std::istringstream& stream) {
-    float u, v;
-    stream >> u >> v;
-    return {u,v};
-}
-
-FaceIndices ParseFaceIndicesFromOBJ(std::istringstream& stream) {
-    FaceIndices face{};
-    char slash;
-    for (int i = 0; i < 3; ++i) {
-        unsigned int vI;
-        unsigned int tCI;
-
-        stream >> vI >> slash >> tCI;
-
-        face.vertexIndex[i] = vI;
-        face.texCoordIndex[i] = tCI;
-
-        // Shift vertexindex by 1
-        face.vertexIndex[i]--;
-        // shift texcoordindex by 1
-        face.texCoordIndex[i]--;
-    }
-    return face;
-}
 void Model::loadOBJ(const std::string& filename) {
     std::ifstream file(filename);
-    if (!file.is_open())
-        std::cerr << filename << " not found." << std::endl;
-
+    //if (!file.is_open())
     std::vector<Vector3> positions;
     std::vector<Vector2> uvs;
+    TextureInformation tInfo = {};
     std::string line;
-
-    // First: We read every (unique) vertex entry and textureCoord entry from the file.
-    // Then: Use Face data to map the bulk data into correct locations.
-
-    // TODO: Check the assumption that we can **always** read all "v", "vt" etc. tokens  first,
-    // allowing us to perform a second-pass to reconstruct faces?
-
     while (std::getline(file, line)) {
         std::istringstream stream(line);
         std::string prefix;
         stream >> prefix;
 
-
         if (prefix == "v") {
-            auto result =  ParseVertexCoordinatesFromOBJ(stream);
-            positions.emplace_back(result);
+            float x, y, z;
+            stream >> x >> y >> z;
+            positions.emplace_back(x, y, z);
         } else if (prefix == "vt") {
-            auto result = ParseVertexTextureCoordinatesFromOBJ(stream);
-            uvs.emplace_back(result);
+            float u, v;
+            stream >> u >> v;
+            uvs.emplace_back(u, v);
         } else if (prefix == "f") {
-            auto result = ParseFaceIndicesFromOBJ(stream);
-            mapFaces(result, positions, uvs);
+            unsigned int vertexIndex[3], texCoordIndex[3];
+            char slash;
+            for (int i = 0; i < 3; ++i) {
+                stream >> vertexIndex[i] >> slash >> texCoordIndex[i];
+                vertexIndex[i]--;
+                texCoordIndex[i]--;
+            }
+
+            for (int i = 0; i < 3; ++i) {
+                Vertex vertex;
+                Vector2 textureCoordinate;
+                vertex = positions[vertexIndex[i]];
+                textureCoordinate = uvs[texCoordIndex[i]];
+
+                vertices.push_back(vertex);
+                tInfo.textureCoordinates.push_back(textureCoordinate);
+                indices.push_back(static_cast<unsigned int>(indices.size()));
+            }
         }
     }
+    textureInfo.push_back(tInfo);
     file.close();
-    textureInfo.push_back({"", uvs});
 };
 
 // map face of model to positions and texture coords