OBJ model support, by Thorn

1 files changed, 113 insertions, 0 deletions

diff --git a/src/model/objfile.h b/src/model/objfile.h
new file mode 100644
index 0000000..4e7f0c7
--- /dev/null
+++ b/src/model/objfile.h
@@ -0,0 +1,113 @@
+/*
+   model/objfile.h
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+/* http://www.royriggs.com/obj.html
+   http://en.wikipedia.org/wiki/Wavefront_.obj_file */
+   
+#ifndef __INCLUDED_MODEL_OBJFILE_H__
+#define __INCLUDED_MODEL_OBJFILE_H__
+
+#include "math/vector3f.h"
+#include "model/model.h"
+#include "model/material.h"
+#include "model/fragment.h"
+#include "model/triangle.h"
+#include "model/quad.h"
+#include "filesystem/filestream.h"
+
+#include <string>
+#include <map>
+#include <vector>
+#include <utility>
+
+namespace model
+{
+
+/// class to parse the .obj file structure and load geometry data into a model
+class OBJFile
+{
+public:
+	/**
+	 * @brief load a .obj file into a Model
+	 * @param name	name of the model to be loaded, without .obj extension or models/ prefix
+	 * If the file can not be read, load() returns the NULL-pointer
+	 */
+	static Model *load(std::string const &name);
+
+private:
+
+	/**
+	 * @brief type definition for a list of materials in the ASE file
+	 */
+	typedef std::map<size_t, Material *> MaterialList;
+
+	/**
+	 * @brief type definition for a list of vertices
+	 */
+	typedef std::map<size_t, math::Vector3f *> VertexList;
+	typedef std::map<size_t, math::Vector3f *> NormalList;
+	typedef std::map<size_t, math::Vector2f *> UVList;
+
+	/**
+	 * @brief type definition for a list of faces
+	 */
+	typedef std::list<std::pair<size_t, Triangle *> > TriList;
+	typedef std::list<std::pair<size_t, Quad *> > 	  QuadList;
+
+	OBJFile(std::string const &name);
+	~OBJFile();
+
+	/**
+	 * @brief read the .obj file
+	 */
+	bool read();
+	
+	/**
+	 * @brief parse a line in the .obj file.
+	 */
+	void readline(std::string const &line);
+	
+	inline const std::string &name() const {
+		return objfile_name;
+	}
+
+	inline bool is_open() {
+		return objfile_ifs.is_open();
+	}
+
+	inline size_t vertexcount() const {
+		return obj_vertexlist.size();
+	}
+
+	inline FragmentGroup *fragmentgroup() {
+		return obj_fragmentgroup;
+	}
+	
+	inline const math::BoundingBox3f & box() const {
+		return obj_box;
+	}
+
+	std::string		objfile_name;
+
+	filesystem::IFileStream	objfile_ifs;
+
+	MaterialList	obj_materiallist;
+	VertexList		obj_vertexlist;
+	UVList			obj_uvlist;
+	NormalList		obj_normallist;
+	TriList			obj_trilist;
+	QuadList		obj_quadlist;
+
+	math::BoundingBox3f	obj_box;
+
+	FragmentGroup		*obj_fragmentgroup;
+
+	size_t			obj_normalcount;
+};
+
+} // namespace model
+
+#endif // __INCLUDED_MODEL_OBJFILE_H__