assimp/include/assimp/types.h

/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
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Copyright (c) 2006-2016, assimp 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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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*/

/** @file types.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 <math.h>
#include <stddef.h>
#include <string.h>
#include <limits.h>

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

// Some types moved to separate header due to size of operators
#include "vector3.h"
#include "vector2.h"
#include "color4.h"
#include "matrix3x3.h"
#include "matrix4x4.h"
#include "quaternion.h"

#ifdef __cplusplus
#include <cstring>
#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) {}
    explicit 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 comparison */
    // TODO: add epsilon?
    bool operator < (const aiColor3D& other) const {
        return r < other.r || (
            r == other.r && (g < other.g ||
                (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 std::fabs( r ) < epsilon && std::fabs( g ) < epsilon && std::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 ASCII, thus the character set needed to be strictly 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 ASSIMP_BUILD_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 */
    explicit 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 == memcmp(data,other.data,length));
    }

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

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

    /** Returns a pointer to the underlying zero-terminated array of characters */
    const char* C_Str() const {
        return data;
    }

#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.
 */
typedef 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

    /// @endcond
} aiReturn;  // !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

    /// @endcond
}; // !enum aiOrigin

// ----------------------------------------------------------------------------------
/** @brief Enumerates predefined log streaming destinations.
 *  Logging to these streams can be enabled with a single call to
 *   #LogStream::createDefaultStream.
 */
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
    /// @endcond
}; // !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 implementation files
#include "vector2.inl"
#include "vector3.inl"
#include "color4.inl"
#include "quaternion.inl"
#include "matrix3x3.inl"
#include "matrix4x4.inl"
#endif