assimp/code/COBScene.h

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

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All rights reserved.

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following disclaimer.

* Redistributions in binary form must reproduce the above
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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*/

/** @file  COBScene.h
*  @brief Utilities for the COB importer.
*/
#ifndef INCLUDED_AI_COB_SCENE_H
#define INCLUDED_AI_COB_SCENE_H

#include <boost/shared_ptr.hpp>
#include "BaseImporter.h"

namespace Assimp	{
	namespace COB {

// ------------------
/** Represents a single vertex index in a face */
struct VertexIndex
{
	// intentionally uninitialized
	unsigned int pos_idx,uv_idx;
};

// ------------------
/** COB Face data structure */
struct Face
{
	// intentionally uninitialized
	unsigned int material, flags;
	std::vector<VertexIndex> indices;
};

// ------------------
/** COB chunk header information */
struct ChunkInfo
{
	enum {NO_SIZE=UINT_MAX};

	ChunkInfo ()
		:	id        (0)
		,	parent_id (0)
		,	version	  (0)
		,	size	  (NO_SIZE)
	{}

	// Id of this chunk, unique within file
	unsigned int id;

	// and the corresponding parent
	unsigned int parent_id;

	// version. v1.23 becomes 123
	unsigned int version;

	// chunk size in bytes, only relevant for binary files
	// NO_SIZE is also valid.
	unsigned int size;
};

// ------------------
/** A node in the scenegraph */
struct Node : public ChunkInfo
{
	enum Type {
		TYPE_MESH,TYPE_GROUP,TYPE_LIGHT,TYPE_CAMERA,TYPE_BONE
	};

	virtual ~Node() {}
	Node(Type type) : type(type), unit_scale(1.f){}

	Type type;

	// used during resolving
	typedef std::deque<const Node*> ChildList;
	mutable ChildList temp_children;

	// unique name
	std::string name;

	// local mesh transformation
	aiMatrix4x4 transform;

	// scaling for this node to get to the metric system
	float unit_scale;
};

// ------------------
/** COB Mesh data structure */
struct Mesh : public Node
{
	using ChunkInfo::operator=;
	enum DrawFlags {
		SOLID = 0x1,
		TRANS = 0x2,
		WIRED = 0x4,
		BBOX  = 0x8,
		HIDE  = 0x10
	};

	Mesh() 
		: Node(TYPE_MESH)
		, draw_flags(SOLID) 
	{}

	// vertex elements
	std::vector<aiVector2D> texture_coords;
	std::vector<aiVector3D> vertex_positions;

	// face data
	std::vector<Face> faces;

	// misc. drawing flags
	unsigned int draw_flags;

	// used during resolving
	typedef std::deque<Face*> FaceRefList;
	typedef std::map< unsigned int,FaceRefList > TempMap;
	TempMap temp_map;
};

// ------------------
/** COB Group data structure */
struct Group : public Node
{
	using ChunkInfo::operator=;
	Group() : Node(TYPE_GROUP) {}
};

// ------------------
/** COB Bone data structure */
struct Bone : public Node
{
	using ChunkInfo::operator=;
	Bone() : Node(TYPE_BONE) {}
};

// ------------------
/** COB Light data structure */
struct Light : public Node
{
	enum LightType {
		SPOT,LOCAL,INFINITE
	};

	using ChunkInfo::operator=;
	Light() : Node(TYPE_LIGHT),angle(),inner_angle(),ltype(SPOT) {}

	aiColor3D color;
	float angle,inner_angle;

	LightType ltype;
};

// ------------------
/** COB Camera data structure */
struct Camera : public Node
{
	using ChunkInfo::operator=;
	Camera() : Node(TYPE_CAMERA) {}
};

// ------------------
/** COB Texture data structure */
struct Texture
{
	std::string path;
	aiUVTransform transform;
};

// ------------------
/** COB Material data structure */
struct Material : ChunkInfo
{
	using ChunkInfo::operator=;
	enum Shader {
		FLAT,PHONG,METAL
	};

	enum AutoFacet {
		FACETED,AUTOFACETED,SMOOTH
	};

	Material() : alpha(),exp(),ior(),ka(),ks(1.f),
		matnum(UINT_MAX),
		shader(FLAT),autofacet(FACETED),
		autofacet_angle()
	{}

	std::string type;

	aiColor3D rgb;
	float alpha, exp, ior,ka,ks;

	unsigned int matnum;
	Shader shader; 

	AutoFacet autofacet;
	float autofacet_angle;

	boost::shared_ptr<Texture> tex_env,tex_bump,tex_color;
};

// ------------------
/** Embedded bitmap, for instance for the thumbnail image */
struct Bitmap : ChunkInfo
{
	Bitmap() : orig_size() {}
	struct BitmapHeader 
	{
	};

	BitmapHeader head;
	size_t orig_size;
	std::vector<char> buff_zipped;
};

typedef std::deque< boost::shared_ptr<Node> > NodeList;
typedef std::vector< Material > MaterialList;

// ------------------
/** Represents a master COB scene, even if we loaded just a single COB file */
struct Scene
{
	NodeList nodes;
	MaterialList materials;

	// becomes *0 later
	Bitmap thumbnail;
};

	} // end COB
} // end Assimp

#endif