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-rw-r--r--obj_loader.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/obj_loader.h b/obj_loader.h
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+++ b/obj_loader.h
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+#ifndef OBJ_LOADER_H_INCLUDED
+#define OBJ_LOADER_H_INCLUDED
+
+#include <glm/glm.hpp>
+#include <string>
+#include <vector>
+
+struct OBJIndex {
+ unsigned int vertexIndex;
+ unsigned int uvIndex;
+ unsigned int normalIndex;
+
+ bool
+ operator<(const OBJIndex & r) const
+ {
+ return vertexIndex < r.vertexIndex;
+ }
+};
+
+class IndexedModel {
+public:
+ std::vector<glm::vec3> positions;
+ std::vector<glm::vec2> texCoords;
+ std::vector<glm::vec3> normals;
+ std::vector<unsigned int> indices;
+
+ void CalcNormals();
+};
+
+class OBJModel {
+public:
+ std::vector<OBJIndex> OBJIndices;
+ std::vector<glm::vec3> vertices;
+ std::vector<glm::vec2> uvs;
+ std::vector<glm::vec3> normals;
+ bool hasUVs;
+ bool hasNormals;
+
+ OBJModel(const std::string & fileName);
+
+ IndexedModel ToIndexedModel();
+
+private:
+ unsigned int FindLastVertexIndex(
+ const std::vector<OBJIndex *> & indexLookup, const OBJIndex * currentIndex, const IndexedModel & result);
+ void CreateOBJFace(const std::string & line);
+
+ glm::vec2 ParseOBJVec2(const std::string & line);
+ glm::vec3 ParseOBJVec3(const std::string & line);
+ OBJIndex ParseOBJIndex(const std::string & token, bool * hasUVs, bool * hasNormals);
+};
+
+#endif // OBJ_LOADER_H_INCLUDED