assimp/include/aiTypes.h

/*
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Open Asset Import Library (ASSIMP)
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Copyright (c) 2006-2010, ASSIMP Development Team

All rights reserved.

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  following disclaimer.

* Redistributions in binary form must reproduce the above
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  derived from this software without specific prior
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*/

/** @file aiTypes.h
 *  Basic data types and primitives, such as vectors or colors. 
 */
#ifndef AI_TYPES_H_INC
#define AI_TYPES_H_INC

// Some runtime headers
#include <sys/types.h>
#include <memory.h>
#include <math.h>
#include <stddef.h>

// Our compile configuration
#include "aiDefines.h"

// Some types moved to separate header due to size of operators
#include "aiVector3D.h"
#include "aiVector2D.h"
#include "aiColor4D.h"
#include "aiMatrix3x3.h"
#include "aiMatrix4x4.h"
#include "aiQuaternion.h"

#ifdef __cplusplus
#include <new>		// for std::nothrow_t
#include <string>	// for aiString::Set(const std::string&)

namespace Assimp	{
	//! @cond never
namespace Intern		{
	// --------------------------------------------------------------------
	/** @brief Internal helper class to utilize our internal new/delete 
	 *    routines for allocating object of this and derived classes.
	 *
	 * By doing this you can safely share class objects between Assimp
	 * and the application - it works even over DLL boundaries. A good
	 * example is the #IOSystem where the application allocates its custom
	 * #IOSystem, then calls #Importer::SetIOSystem(). When the Importer
	 * destructs, Assimp calls operator delete on the stored #IOSystem.
	 * If it lies on a different heap than Assimp is working with,
	 * the application is determined to crash.
	 */
	// --------------------------------------------------------------------
#ifndef SWIG
	struct ASSIMP_API AllocateFromAssimpHeap	{
		// http://www.gotw.ca/publications/mill15.htm

		// new/delete overload
		void *operator new    ( size_t num_bytes) /* throw( std::bad_alloc ) */;
		void *operator new    ( size_t num_bytes, const std::nothrow_t& ) throw();
		void  operator delete ( void* data);

		// array new/delete overload
		void *operator new[]    ( size_t num_bytes) /* throw( std::bad_alloc ) */;
		void *operator new[]    ( size_t num_bytes, const std::nothrow_t& )  throw();
		void  operator delete[] ( void* data);

	}; // struct AllocateFromAssimpHeap
#endif
} // namespace Intern
	//! @endcond
} // namespace Assimp

extern "C" {
#endif

/** Maximum dimension for strings, ASSIMP strings are zero terminated. */
#ifdef __cplusplus
const size_t MAXLEN = 1024;
#else
#	define MAXLEN 1024
#endif

#include "./Compiler/pushpack1.h"

// ----------------------------------------------------------------------------------
/** Represents a plane in a three-dimensional, euclidean space
*/
struct aiPlane
{
#ifdef __cplusplus
	aiPlane () : a(0.f), b(0.f), c(0.f), d(0.f) {}
	aiPlane (float _a, float _b, float _c, float _d) 
		: a(_a), b(_b), c(_c), d(_d) {}

	aiPlane (const aiPlane& o) : a(o.a), b(o.b), c(o.c), d(o.d) {}

#endif // !__cplusplus

	//! Plane equation
	float a,b,c,d;
} PACK_STRUCT; // !struct aiPlane

// ----------------------------------------------------------------------------------
/** Represents a ray
*/
struct aiRay
{
#ifdef __cplusplus
	aiRay () {}
	aiRay (const aiVector3D& _pos, const aiVector3D& _dir)
		: pos(_pos), dir(_dir) {}

	aiRay (const aiRay& o) : pos (o.pos), dir (o.dir) {}

#endif // !__cplusplus

	//! Position and direction of the ray
	C_STRUCT aiVector3D pos, dir;
} PACK_STRUCT; // !struct aiRay

// ----------------------------------------------------------------------------------
/** Represents a color in Red-Green-Blue space. 
*/
struct aiColor3D
{
#ifdef __cplusplus
	aiColor3D () : r(0.0f), g(0.0f), b(0.0f) {}
	aiColor3D (float _r, float _g, float _b) : r(_r), g(_g), b(_b) {}
	aiColor3D (float _r) : r(_r), g(_r), b(_r) {}
	aiColor3D (const aiColor3D& o) : r(o.r), g(o.g), b(o.b) {}
	
	/** Component-wise comparison */
	// TODO: add epsilon?
	bool operator == (const aiColor3D& other) const
		{return r == other.r && g == other.g && b == other.b;}

	/** Component-wise inverse comparison */
	// TODO: add epsilon?
	bool operator != (const aiColor3D& other) const
		{return r != other.r || g != other.g || b != other.b;}

	/** Component-wise addition */
	aiColor3D operator+(const aiColor3D& c) const {
		return aiColor3D(r+c.r,g+c.g,b+c.b);
	}

	/** Component-wise subtraction */
	aiColor3D operator-(const aiColor3D& c) const {
		return aiColor3D(r+c.r,g+c.g,b+c.b);
	}

	/** Component-wise multiplication */
	aiColor3D operator*(const aiColor3D& c) const {
		return aiColor3D(r*c.r,g*c.g,b*c.b);
	}
	
	/** Multiply with a scalar */
	aiColor3D operator*(float f) const {
		return aiColor3D(r*f,g*f,b*f);
	}

	/** Access a specific color component */
	float operator[](unsigned int i) const {
		return *(&r + i);
	}

	/** Access a specific color component */
	float& operator[](unsigned int i) {
		return *(&r + i);
	}

	/** Check whether a color is black */
	bool IsBlack() const {
		static const float epsilon = 10e-3f;
		return fabs( r ) < epsilon && fabs( g ) < epsilon && fabs( b ) < epsilon;
	}

#endif // !__cplusplus

	//! Red, green and blue color values
	float r, g, b;
} PACK_STRUCT;  // !struct aiColor3D
#include "./Compiler/poppack1.h"

// ----------------------------------------------------------------------------------
/** Represents an UTF-8 string, zero byte terminated.
 *
 *  The character set of an aiString is explicitly defined to be UTF-8. This Unicode
 *  transformation was chosen in the belief that most strings in 3d files are limited
 *  to the ASCII characters, thus the character set needed to be ASCII compatible.
 *  
 *  Most text file loaders provide proper Unicode input file handling, special unicode
 *  characters are correctly transcoded to UTF8 and are kept throughout the libraries'
 *  import pipeline. 
 *
 *  For most applications, it will be absolutely sufficient to interpret the
 *  aiString as ASCII data and work with it as one would work with a plain char*. 
 *  Windows users in need of proper support for i.e asian characters can use the
 *  #MultiByteToWideChar(), #WideCharToMultiByte() WinAPI functionality to convert the
 *  UTF-8 strings to their working character set (i.e. MBCS, WideChar).
 *
 *  We use this representation instead of std::string to be C-compatible. The 
 *  (binary) length of such a string is limited to MAXLEN characters (including the
 *  the terminating zero).
*/
struct aiString
{
#ifdef __cplusplus
	/** Default constructor, the string is set to have zero length */
	aiString() :
		length(0) 
	{
		data[0] = '\0';

#ifdef _DEBUG
		// Debug build: overwrite the string on its full length with ESC (27)
		memset(data+1,27,MAXLEN-1);
#endif
	}

	/** Copy constructor */
	aiString(const aiString& rOther) : 
		length(rOther.length) 
	{
		// Crop the string to the maximum length
		length = length>=MAXLEN?MAXLEN-1:length;
		memcpy( data, rOther.data, length);
		data[length] = '\0';
	}

	/** Constructor from std::string */
	aiString(const std::string& pString) : 
		length(pString.length()) 
	{
		length = length>=MAXLEN?MAXLEN-1:length;
		memcpy( data, pString.c_str(), length);
		data[length] = '\0';
	}

	/** Copy a std::string to the aiString */
	void Set( const std::string& pString) {
		if( pString.length() > MAXLEN - 1) {
			return;
		}
		length = pString.length();
		::memcpy( data, pString.c_str(), length);
		data[length] = 0;
	}

	/** Copy a const char* to the aiString */
	void Set( const char* sz) {
		const size_t len = ::strlen(sz);
		if( len > MAXLEN - 1) {
			return;
		}
		length = len;
		::memcpy( data, sz, len);
		data[len] = 0;
	}

	/** Assign a const char* to the string */
	aiString& operator = (const char* sz) {
		Set(sz);
		return *this;
	}

	/** Assign a cstd::string to the string */
	aiString& operator = ( const std::string& pString) {
		Set(pString);
		return *this;
	}

	/** Comparison operator */
	bool operator==(const aiString& other) const {
		return  (length == other.length && 0 == strcmp(this->data,other.data));
	}

	/** Inverse comparison operator */
	bool operator!=(const aiString& other) const {
		return  (length != other.length || 0 != ::strcmp(this->data,other.data));
	}

	/** Append a string to the string */
	void Append (const char* app)	{
		const size_t len = ::strlen(app);
		if (!len) {
			return;
		}
		if (length + len >= MAXLEN) {
			return;
		}

		memcpy(&data[length],app,len+1);
		length += len;
	}

	/** Clear the string - reset its length to zero */
	void Clear ()	{
		length  = 0;
		data[0] = '\0';

#ifdef _DEBUG
		// Debug build: overwrite the string on its full length with ESC (27)
		memset(data+1,27,MAXLEN-1);
#endif
	}

#endif // !__cplusplus

	/** Binary length of the string excluding the terminal 0. This is NOT the 
	 *  logical length of strings containing UTF-8 multibyte sequences! It's
	 *  the number of bytes from the beginning of the string to its end.*/
	size_t length;

	/** String buffer. Size limit is MAXLEN */
	char data[MAXLEN];
} ;  // !struct aiString


// ----------------------------------------------------------------------------------
/**	Standard return type for some library functions.
 * Rarely used, and if, mostly in the C API.
 */
enum aiReturn
{
	/** Indicates that a function was successful */
	aiReturn_SUCCESS = 0x0,

	/** Indicates that a function failed */
	aiReturn_FAILURE = -0x1,

	/** Indicates that not enough memory was available
	 * to perform the requested operation 
	 */
	aiReturn_OUTOFMEMORY = -0x3,

	/** @cond never 
	 *  Force 32-bit size enum
	 */
	_AI_ENFORCE_ENUM_SIZE = 0x7fffffff 
};  // !enum aiReturn

// just for backwards compatibility, don't use these constants anymore
#define AI_SUCCESS     aiReturn_SUCCESS
#define AI_FAILURE     aiReturn_FAILURE
#define AI_OUTOFMEMORY aiReturn_OUTOFMEMORY

// ----------------------------------------------------------------------------------
/** Seek origins (for the virtual file system API).
 *  Much cooler than using SEEK_SET, SEEK_CUR or SEEK_END.
 */
enum aiOrigin
{
	/** Beginning of the file */
	aiOrigin_SET = 0x0,	

	/** Current position of the file pointer */
	aiOrigin_CUR = 0x1,		

	/** End of the file, offsets must be negative */
	aiOrigin_END = 0x2,

	/**  @cond never 
	 *   Force 32-bit size enum 
	 */
	_AI_ORIGIN_ENFORCE_ENUM_SIZE = 0x7fffffff 
}; // !enum aiOrigin

// ----------------------------------------------------------------------------------
/** @brief Enumerates predefined log streaming destinations. 
 *  Logging to these streams can be enabled with a single call to 
 *   #LogStream::createDefaultStream or #aiAttachPredefinedLogStream(),
 *   respectively.
 */
enum aiDefaultLogStream	
{
	/** Stream the log to a file */
	aiDefaultLogStream_FILE = 0x1,

	/** Stream the log to std::cout */
	aiDefaultLogStream_STDOUT = 0x2,

	/** Stream the log to std::cerr */
	aiDefaultLogStream_STDERR = 0x4,

	/** MSVC only: Stream the log the the debugger
	 * (this relies on OutputDebugString from the Win32 SDK)
	 */
	aiDefaultLogStream_DEBUGGER = 0x8,

	/** @cond never 
	 *  Force 32-bit size enum 
	 */
	_AI_DLS_ENFORCE_ENUM_SIZE = 0x7fffffff 
}; // !enum aiDefaultLogStream

// just for backwards compatibility, don't use these constants anymore
#define DLS_FILE     aiDefaultLogStream_FILE
#define DLS_STDOUT   aiDefaultLogStream_STDOUT
#define DLS_STDERR   aiDefaultLogStream_STDERR
#define DLS_DEBUGGER aiDefaultLogStream_DEBUGGER

// ----------------------------------------------------------------------------------
/** Stores the memory requirements for different components (e.g. meshes, materials,
 *  animations) of an import. All sizes are in bytes.
 *  @see Importer::GetMemoryRequirements()
*/
struct aiMemoryInfo
{
#ifdef __cplusplus

	/** Default constructor */
	aiMemoryInfo()
		: textures   (0)
		, materials  (0)
		, meshes     (0)
		, nodes      (0)
		, animations (0)
		, cameras	 (0)
		, lights	 (0)
		, total      (0)
	{}

#endif

	/** Storage allocated for texture data */
	unsigned int textures;

	/** Storage allocated for material data  */
	unsigned int materials;

	/** Storage allocated for mesh data */
	unsigned int meshes;

	/** Storage allocated for node data */
	unsigned int nodes;

	/** Storage allocated for animation data */
	unsigned int animations;

	/** Storage allocated for camera data */
	unsigned int cameras;

	/** Storage allocated for light data */
	unsigned int lights;

	/** Total storage allocated for the full import. */
	unsigned int total;
}; // !struct aiMemoryInfo 

#ifdef __cplusplus
}
#endif //!  __cplusplus

// Include implementations
#include "aiVector3D.inl"
#include "aiColor4D.inl"
#include "aiMatrix3x3.inl"
#include "aiMatrix4x4.inl"
#endif