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irr::core Namespace Reference

Basic classes such as vectors, planes, arrays, lists, and so on can be found in this namespace. More...

Classes

class  aabbox3d
 Axis aligned bounding box in 3d dimensional space. More...
class  array
 Self reallocating template array (like stl vector) with additional features. More...
class  CMatrix4
 4x4 matrix. Mostly used as transformation matrix for 3d calculations. More...
class  dimension2d
 Specifies a 2 dimensional size. More...
union  inttofloat
class  irrAllocator
 Very simple allocator implementation, containers using it can be used across dll boundaries. More...
class  irrAllocatorFast
 Fast allocator, only to be used in containers inside the same memory heap. More...
class  line2d
 2D line between two points with intersection methods. More...
class  line3d
 3D line between two points with intersection methods. More...
class  list
 Doubly linked list template. More...
class  map
 map template for associative arrays using a red-black tree More...
class  plane3d
 Template plane class with some intersection testing methods. More...
class  quaternion
 Quaternion class for representing rotations. More...
class  rect
 Rectangle template. More...
class  string
class  triangle3d
 3d triangle template class for doing collision detection and other things. More...
class  vector2d
 2d vector template class with lots of operators and methods. More...
class  vector3d
 3d vector template class with lots of operators and methods. More...

Typedefs

typedef aabbox3d< f32aabbox3df
 Typedef for a f32 3d bounding box.
typedef aabbox3d< s32aabbox3di
 Typedef for an integer 3d bounding box.
typedef dimension2d< f32dimension2df
 Typedef for an f32 dimension.
typedef dimension2d< s32dimension2di
 Typedef for an integer dimension.
typedef dimension2d< u32dimension2du
 Typedef for an unsigned integer dimension.
typedef line2d< f32line2df
 Typedef for an f32 line.
typedef line2d< s32line2di
 Typedef for an integer line.
typedef line3d< f32line3df
 Typedef for an f32 line.
typedef line3d< s32line3di
 Typedef for an integer line.
typedef CMatrix4< f32matrix4
 Typedef for f32 matrix.
typedef plane3d< f32plane3df
 Typedef for a f32 3d plane.
typedef plane3d< s32plane3di
 Typedef for an integer 3d plane.
typedef vector2d< f32position2df
typedef vector2d< s32position2di
typedef rect< f32rectf
 Rectangle with float values.
typedef rect< s32recti
 Rectangle with int values.
typedef string< c8stringc
 Typedef for character strings.
typedef string< wchar_t > stringw
 Typedef for wide character strings.
typedef triangle3d< f32triangle3df
 Typedef for a f32 3d triangle.
typedef triangle3d< s32triangle3di
 Typedef for an integer 3d triangle.
typedef vector2d< f32vector2df
 Typedef for f32 2d vector.
typedef vector2d< s32vector2di
 Typedef for integer 2d vector.
typedef vector3d< f32vector3df
 Typedef for a f32 3d vector.
typedef vector3d< s32vector3di
 Typedef for an integer 3d vector.

Enumerations

enum  eAllocStrategy { ALLOC_STRATEGY_SAFE = 0, ALLOC_STRATEGY_DOUBLE = 1, ALLOC_STRATEGY_SQRT = 2 }
 

defines an allocation strategy

More...
enum  EIntersectionRelation3D {
  ISREL3D_FRONT = 0, ISREL3D_BACK, ISREL3D_PLANAR, ISREL3D_SPANNING,
  ISREL3D_CLIPPED
}
 

Enumeration for intersection relations of 3d objects.

More...
enum  eLocaleID { IRR_LOCALE_ANSI = 0, IRR_LOCALE_GERMAN = 1 }
 

Very simple string class with some useful features.

More...

Functions

template<class T >
abs_ (const T &a)
 returns abs of two values. Own implementation to get rid of STL (VS6 problems)
REALINLINE s32 ceil32 (f32 x)
template<class T >
const T clamp (const T &value, const T &low, const T &high)
 clamps a value between low and high
REALINLINE void clearFPUException ()
io::pathcutFilenameExtension (io::path &dest, const io::path &source)
 cut the filename extension from a source file path and store it in a dest file path
f64 degToRad (f64 degrees)
 Utility function to convert a degrees value to radians.
f32 degToRad (f32 degrees)
 Utility function to convert a degrees value to radians.
io::pathdeletePathFromFilename (io::path &filename)
 delete path from filename
io::pathdeletePathFromPath (io::path &filename, s32 pathCount)
 trim paths
bool equals (const u32 a, const u32 b, const s32 tolerance=ROUNDING_ERROR_S32)
 returns if a equals b, taking an explicit rounding tolerance into account
bool equals (const s32 a, const s32 b, const s32 tolerance=ROUNDING_ERROR_S32)
 returns if a equals b, taking an explicit rounding tolerance into account
bool equals (const f32 a, const f32 b, const f32 tolerance=ROUNDING_ERROR_f32)
 returns if a equals b, taking possible rounding errors into account
bool equals (const f64 a, const f64 b, const f64 tolerance=ROUNDING_ERROR_f64)
 returns if a equals b, taking possible rounding errors into account
f32 f32_max3 (const f32 a, const f32 b, const f32 c)
f32 f32_min3 (const f32 a, const f32 b, const f32 c)
float fast_atof (const char *floatAsString)
const char * fast_atof_move (const char *in, f32 &out)
REALINLINE s32 floor32 (f32 x)
f32 FR (s32 x)
f32 FR (u32 x)
 Floating-point representation of an integer value.
f32 fract (f32 x)
io::pathgetFileNameExtension (io::path &dest, const io::path &source)
 get the filename extension from a file path
bool hasFileExtension (const io::path &filename, const io::path &ext0, const io::path &ext1="", const io::path &ext2="")
 search if a filename has a proper extension
template<class T >
void heapsink (T *array, s32 element, s32 max)
 Sinks an element into the heap.
template<class T >
void heapsort (T *array_, s32 size)
 Sorts an array with size 'size' using heapsort.
REALINLINE u32 if_c_a_else_0 (const s32 condition, const u32 a)
 conditional set based on mask and arithmetic shift
REALINLINE u16 if_c_a_else_b (const s16 condition, const u16 a, const u16 b)
 conditional set based on mask and arithmetic shift
REALINLINE u32 if_c_a_else_b (const s32 condition, const u32 a, const u32 b)
 conditional set based on mask and arithmetic shift
u32 IR (f32 x)
s32 isdigit (s32 c)
 some standard function ( to remove dependencies )
s32 isFileExtension (const io::path &filename, const io::path &ext0, const io::path &ext1, const io::path &ext2)
 search if a filename has a proper extension
s32 isInSameDirectory (const io::path &path, const io::path &file)
bool isnotzero (const f32 a, const f32 tolerance=ROUNDING_ERROR_f32)
 returns if a equals not zero, taking rounding errors into account
s32 isspace (s32 c)
s32 isupper (s32 c)
bool iszero (const u32 a, const u32 tolerance=0)
 returns if a equals zero, taking rounding errors into account
bool iszero (const s32 a, const s32 tolerance=0)
 returns if a equals zero, taking rounding errors into account
bool iszero (const f32 a, const f32 tolerance=ROUNDING_ERROR_f32)
 returns if a equals zero, taking rounding errors into account
bool iszero (const f64 a, const f64 tolerance=ROUNDING_ERROR_f64)
 returns if a equals zero, taking rounding errors into account
template<class T >
lerp (const T &a, const T &b, const f32 t)
template<class T >
const T & max_ (const T &a, const T &b, const T &c)
 returns maximum of three values. Own implementation to get rid of the STL (VS6 problems)
template<class T >
const T & max_ (const T &a, const T &b)
 returns maximum of two values. Own implementation to get rid of the STL (VS6 problems)
template<class T >
const T & min_ (const T &a, const T &b, const T &c)
 returns minimum of three values. Own implementation to get rid of the STL (VS6 problems)
template<class T >
const T & min_ (const T &a, const T &b)
 returns minimum of two values. Own implementation to get rid of the STL (VS6 problems)
template<class S , class T >
vector3d< T > operator* (const S scalar, const vector3d< T > &vector)
 Function multiplying a scalar and a vector component-wise.
template<class S , class T >
vector2d< T > operator* (const S scalar, const vector2d< T > &vector)
template<class T >
CMatrix4< T > operator* (const T scalar, const CMatrix4< T > &mat)
f64 radToDeg (f64 radians)
 Utility function to convert a radian value to degrees.
f32 radToDeg (f32 radians)
 Utility function to convert a radian value to degrees.
REALINLINE f64 reciprocal (const f64 f)
REALINLINE f32 reciprocal (const f32 f)
REALINLINE f32 reciprocal_approxim (const f32 f)
REALINLINE s32 reciprocal_squareroot (const s32 x)
REALINLINE f32 reciprocal_squareroot (const f32 f)
REALINLINE f64 reciprocal_squareroot (const f64 x)
REALINLINE s32 round32 (f32 x)
f32 round_ (f32 x)
s32 s32_clamp (s32 value, s32 low, s32 high)
s32 s32_max (s32 a, s32 b)
s32 s32_min (s32 a, s32 b)
REALINLINE void setbit_cond (u32 &state, s32 condition, u32 mask)
REALINLINE s32 squareroot (const s32 f)
REALINLINE f64 squareroot (const f64 f)
REALINLINE f32 squareroot (const f32 f)
f32 strtof10 (const char *in, const char **out=0)
s32 strtol10 (const char *in, const char **out=0)
template<class T1 , class T2 >
void swap (T1 &a, T2 &b)
 swaps the content of the passed parameters

Variables

const f32 DEGTORAD = PI / 180.0f
 32bit Constant for converting from degrees to radians
const f64 DEGTORAD64 = PI64 / 180.0
 64bit constant for converting from degrees to radians (formally known as GRAD_PI2)
const float fast_atof_table [17]
const f32 HALF_PI = PI/2.0f
 Constant for half of PI.
IRRLICHT_API const matrix4 IdentityMatrix
 global const identity matrix
const f32 PI = 3.14159265359f
 Constant for PI.
const f64 PI64 = 3.1415926535897932384626433832795028841971693993751
 Constant for 64bit PI.
const f32 RADTODEG = 180.0f / PI
 32bit constant for converting from radians to degrees (formally known as GRAD_PI)
const f64 RADTODEG64 = 180.0 / PI64
 64bit constant for converting from radians to degrees
const f32 RECIPROCAL_PI = 1.0f/PI
 Constant for reciprocal of PI.
const f64 RECIPROCAL_PI64 = 1.0/PI64
 Constant for 64bit reciprocal of PI.
const f32 ROUNDING_ERROR_f32 = 0.000001f
const f64 ROUNDING_ERROR_f64 = 0.00000001
const s32 ROUNDING_ERROR_S32 = 0
 Rounding error constant often used when comparing f32 values.

Detailed Description

Basic classes such as vectors, planes, arrays, lists, and so on can be found in this namespace.


Typedef Documentation

Typedef for a f32 3d bounding box.

Definition at line 320 of file aabbox3d.h.

Typedef for an integer 3d bounding box.

Definition at line 322 of file aabbox3d.h.

Typedef for an f32 dimension.

Definition at line 205 of file dimension2d.h.

Typedef for an integer dimension.

There are few cases where negative dimensions make sense. Please consider using dimension2du instead.

Definition at line 212 of file dimension2d.h.

Typedef for an unsigned integer dimension.

Definition at line 207 of file dimension2d.h.

Typedef for an f32 line.

Definition at line 233 of file line2d.h.

Typedef for an integer line.

Definition at line 235 of file line2d.h.

Typedef for an f32 line.

Definition at line 136 of file line3d.h.

Typedef for an integer line.

Definition at line 138 of file line3d.h.

Typedef for f32 matrix.

Definition at line 2122 of file matrix4.h.

Typedef for a f32 3d plane.

Definition at line 231 of file plane3d.h.

Typedef for an integer 3d plane.

Definition at line 234 of file plane3d.h.

Deprecated:
position2d is now a synonym for vector2d, but vector2d should be used directly.

Definition at line 21 of file position2d.h.

Deprecated:
position2d is now a synonym for vector2d, but vector2d should be used directly.

Definition at line 24 of file position2d.h.

Rectangle with float values.

Definition at line 271 of file rect.h.

Rectangle with int values.

Definition at line 273 of file rect.h.

Typedef for character strings.

Definition at line 1116 of file irrString.h.

typedef string<wchar_t> irr::core::stringw

Typedef for wide character strings.

Definition at line 1119 of file irrString.h.

Typedef for a f32 3d triangle.

Definition at line 237 of file triangle3d.h.

Typedef for an integer 3d triangle.

Definition at line 240 of file triangle3d.h.

Typedef for f32 2d vector.

Definition at line 320 of file vector2d.h.

Typedef for integer 2d vector.

Definition at line 323 of file vector2d.h.

Typedef for a f32 3d vector.

Definition at line 415 of file vector3d.h.

Typedef for an integer 3d vector.

Definition at line 418 of file vector3d.h.


Enumeration Type Documentation

defines an allocation strategy

Enumerator:
ALLOC_STRATEGY_SAFE 
ALLOC_STRATEGY_DOUBLE 
ALLOC_STRATEGY_SQRT 

Definition at line 112 of file irrAllocator.h.

Enumeration for intersection relations of 3d objects.

Enumerator:
ISREL3D_FRONT 
ISREL3D_BACK 
ISREL3D_PLANAR 
ISREL3D_SPANNING 
ISREL3D_CLIPPED 

Definition at line 17 of file plane3d.h.

Very simple string class with some useful features.

string<c8> and string<wchar_t> both accept Unicode AND ASCII/Latin-1, so you can assign Unicode to string<c8> and ASCII/Latin-1 to string<wchar_t> (and the other way round) if you want to.

However, note that the conversation between both is not done using any encoding. This means that c8 strings are treated as ASCII/Latin-1, not UTF-8, and are simply expanded to the equivalent wchar_t, while Unicode/wchar_t characters are truncated to 8-bit ASCII/Latin-1 characters, discarding all other information in the wchar_t.

Enumerator:
IRR_LOCALE_ANSI 
IRR_LOCALE_GERMAN 

Definition at line 32 of file irrString.h.


Function Documentation

template<class T >
T irr::core::abs_ ( const T &  a  )  [inline]

returns abs of two values. Own implementation to get rid of STL (VS6 problems)

Definition at line 144 of file irrMath.h.

REALINLINE s32 irr::core::ceil32 ( f32  x  ) 

Definition at line 575 of file irrMath.h.

template<class T >
const T irr::core::clamp ( const T &  value,
const T &  low,
const T &  high 
) [inline]
REALINLINE void irr::core::clearFPUException (  ) 

Definition at line 391 of file irrMath.h.

io::path& irr::core::cutFilenameExtension ( io::path &  dest,
const io::path &  source 
) [inline]

cut the filename extension from a source file path and store it in a dest file path

Definition at line 45 of file coreutil.h.

Referenced by irr::scene::quake3::getTextures().

f64 irr::core::degToRad ( f64  degrees  )  [inline]

Utility function to convert a degrees value to radians.

Provided as it can be clearer to write degToRad(X) than DEGTORAD * X

Parameters:
degrees The degrees value to convert to radians.

Definition at line 109 of file irrMath.h.

References DEGTORAD64.

f32 irr::core::degToRad ( f32  degrees  )  [inline]

Utility function to convert a degrees value to radians.

Provided as it can be clearer to write degToRad(X) than DEGTORAD * X

Parameters:
degrees The degrees value to convert to radians.

Definition at line 100 of file irrMath.h.

References DEGTORAD.

io::path& irr::core::deletePathFromFilename ( io::path &  filename  )  [inline]

delete path from filename

Definition at line 64 of file coreutil.h.

io::path& irr::core::deletePathFromPath ( io::path &  filename,
s32  pathCount 
) [inline]

trim paths

Definition at line 83 of file coreutil.h.

bool irr::core::equals ( const u32  a,
const u32  b,
const s32  tolerance = ROUNDING_ERROR_S32 
) [inline]

returns if a equals b, taking an explicit rounding tolerance into account

Definition at line 208 of file irrMath.h.

bool irr::core::equals ( const s32  a,
const s32  b,
const s32  tolerance = ROUNDING_ERROR_S32 
) [inline]

returns if a equals b, taking an explicit rounding tolerance into account

Definition at line 202 of file irrMath.h.

bool irr::core::equals ( const f32  a,
const f32  b,
const f32  tolerance = ROUNDING_ERROR_f32 
) [inline]

returns if a equals b, taking possible rounding errors into account

Definition at line 184 of file irrMath.h.

bool irr::core::equals ( const f64  a,
const f64  b,
const f64  tolerance = ROUNDING_ERROR_f64 
) [inline]
f32 irr::core::f32_max3 ( const f32  a,
const f32  b,
const f32  c 
) [inline]

Definition at line 637 of file irrMath.h.

f32 irr::core::f32_min3 ( const f32  a,
const f32  b,
const f32  c 
) [inline]

Definition at line 642 of file irrMath.h.

float irr::core::fast_atof ( const char *  floatAsString  )  [inline]

Convert a string to a floating point number

Parameters:
floatAsString,: The string to convert.

Definition at line 186 of file fast_atof.h.

References fast_atof_move().

const char* irr::core::fast_atof_move ( const char *  in,
f32 &  out 
) [inline]

Provides a fast function for converting a string into a float. This is not guaranteed to be as accurate as atof(), but is approximately 6 to 8 times as fast.

Parameters:
[in] in,: The string to convert.
[out] out,: The resultant float will be written here.
Returns:
A pointer to the first character in the string that wasn't use to create the float value.

Definition at line 136 of file fast_atof.h.

References fast_atof_table, strtof10(), and strtol10().

Referenced by fast_atof(), and irr::scene::quake3::getAsFloat().

REALINLINE s32 irr::core::floor32 ( f32  x  ) 
f32 irr::core::FR ( s32  x  )  [inline]

Definition at line 301 of file irrMath.h.

References irr::core::inttofloat::f, and irr::core::inttofloat::s.

f32 irr::core::FR ( u32  x  )  [inline]

Floating-point representation of an integer value.

Definition at line 300 of file irrMath.h.

References irr::core::inttofloat::f, and irr::core::inttofloat::u.

Referenced by irr::video::pack_texureBlendFunc().

f32 irr::core::fract ( f32  x  )  [inline]

Definition at line 647 of file irrMath.h.

Referenced by irr::scene::quake3::SModifierFunction::evaluate().

io::path& irr::core::getFileNameExtension ( io::path &  dest,
const io::path &  source 
) [inline]

get the filename extension from a file path

Definition at line 53 of file coreutil.h.

bool irr::core::hasFileExtension ( const io::path &  filename,
const io::path &  ext0,
const io::path &  ext1 = "",
const io::path &  ext2 = "" 
) [inline]

search if a filename has a proper extension

Definition at line 36 of file coreutil.h.

template<class T >
void irr::core::heapsink ( T *  array,
s32  element,
s32  max 
) [inline]

Sinks an element into the heap.

Definition at line 17 of file heapsort.h.

Referenced by heapsort().

template<class T >
void irr::core::heapsort ( T *  array_,
s32  size 
) [inline]

Sorts an array with size 'size' using heapsort.

Definition at line 41 of file heapsort.h.

References heapsink().

Referenced by irr::core::array< IMesh * >::sort().

REALINLINE u32 irr::core::if_c_a_else_0 ( const s32  condition,
const u32  a 
)

conditional set based on mask and arithmetic shift

Definition at line 370 of file irrMath.h.

REALINLINE u16 irr::core::if_c_a_else_b ( const s16  condition,
const u16  a,
const u16  b 
)

conditional set based on mask and arithmetic shift

Definition at line 364 of file irrMath.h.

REALINLINE u32 irr::core::if_c_a_else_b ( const s32  condition,
const u32  a,
const u32  b 
)

conditional set based on mask and arithmetic shift

Definition at line 358 of file irrMath.h.

u32 irr::core::IR ( f32  x  )  [inline]

code is taken from IceFPU Integer representation of a floating-point value.

Definition at line 290 of file irrMath.h.

References irr::core::inttofloat::f, and irr::core::inttofloat::u.

Referenced by irr::core::CMatrix4< T >::isIdentity_integer_base(), irr::core::triangle3d< T >::isPointInsideFast(), and irr::video::unpack_texureBlendFunc().

s32 irr::core::isdigit ( s32  c  )  [inline]

some standard function ( to remove dependencies )

Definition at line 142 of file coreutil.h.

s32 irr::core::isFileExtension ( const io::path &  filename,
const io::path &  ext0,
const io::path &  ext1,
const io::path &  ext2 
) [inline]

search if a filename has a proper extension

Definition at line 19 of file coreutil.h.

s32 irr::core::isInSameDirectory ( const io::path &  path,
const io::path &  file 
) [inline]

looks if file is in the same directory of path. returns offset of directory. 0 means in same directory. 1 means file is direct child of path

Definition at line 111 of file coreutil.h.

bool irr::core::isnotzero ( const f32  a,
const f32  tolerance = ROUNDING_ERROR_f32 
) [inline]

returns if a equals not zero, taking rounding errors into account

Definition at line 227 of file irrMath.h.

s32 irr::core::isspace ( s32  c  )  [inline]

Definition at line 143 of file coreutil.h.

s32 irr::core::isupper ( s32  c  )  [inline]

Definition at line 144 of file coreutil.h.

bool irr::core::iszero ( const u32  a,
const u32  tolerance = 0 
) [inline]

returns if a equals zero, taking rounding errors into account

Definition at line 239 of file irrMath.h.

bool irr::core::iszero ( const s32  a,
const s32  tolerance = 0 
) [inline]

returns if a equals zero, taking rounding errors into account

Definition at line 233 of file irrMath.h.

bool irr::core::iszero ( const f32  a,
const f32  tolerance = ROUNDING_ERROR_f32 
) [inline]

returns if a equals zero, taking rounding errors into account

Definition at line 221 of file irrMath.h.

bool irr::core::iszero ( const f64  a,
const f64  tolerance = ROUNDING_ERROR_f64 
) [inline]
template<class T >
T irr::core::lerp ( const T &  a,
const T &  b,
const f32  t 
) [inline]

returns linear interpolation of a and b with ratio t

Returns:
: a if t==0, b if t==1, and the linear interpolation else

Definition at line 152 of file irrMath.h.

template<class T >
const T& irr::core::max_ ( const T &  a,
const T &  b,
const T &  c 
) [inline]

returns maximum of three values. Own implementation to get rid of the STL (VS6 problems)

Definition at line 137 of file irrMath.h.

References max_().

template<class T >
const T& irr::core::max_ ( const T &  a,
const T &  b 
) [inline]

returns maximum of two values. Own implementation to get rid of the STL (VS6 problems)

Definition at line 130 of file irrMath.h.

Referenced by clamp(), irr::video::SColorHSL::fromRGB(), irr::video::SColor::getLightness(), and max_().

template<class T >
const T& irr::core::min_ ( const T &  a,
const T &  b,
const T &  c 
) [inline]

returns minimum of three values. Own implementation to get rid of the STL (VS6 problems)

Definition at line 123 of file irrMath.h.

References min_().

template<class T >
const T& irr::core::min_ ( const T &  a,
const T &  b 
) [inline]

returns minimum of two values. Own implementation to get rid of the STL (VS6 problems)

Definition at line 116 of file irrMath.h.

Referenced by clamp(), irr::video::SColorHSL::fromRGB(), irr::video::SColor::getLightness(), min_(), and irr::video::SColor::operator+().

template<class S , class T >
vector3d<T> irr::core::operator* ( const S  scalar,
const vector3d< T > &  vector 
) [inline]

Function multiplying a scalar and a vector component-wise.

Definition at line 422 of file vector3d.h.

template<class S , class T >
vector2d<T> irr::core::operator* ( const S  scalar,
const vector2d< T > &  vector 
) [inline]

Definition at line 326 of file vector2d.h.

template<class T >
CMatrix4<T> irr::core::operator* ( const T  scalar,
const CMatrix4< T > &  mat 
) [inline]

Definition at line 2115 of file matrix4.h.

f64 irr::core::radToDeg ( f64  radians  )  [inline]

Utility function to convert a radian value to degrees.

Provided as it can be clearer to write radToDeg(X) than RADTODEG * X

Parameters:
radians The radians value to convert to degrees.

Definition at line 91 of file irrMath.h.

References RADTODEG64.

f32 irr::core::radToDeg ( f32  radians  )  [inline]

Utility function to convert a radian value to degrees.

Provided as it can be clearer to write radToDeg(X) than RADTODEG * X

Parameters:
radians The radians value to convert to degrees.

Definition at line 82 of file irrMath.h.

References RADTODEG.

REALINLINE f64 irr::core::reciprocal ( const f64  f  ) 

Definition at line 497 of file irrMath.h.

REALINLINE f32 irr::core::reciprocal ( const f32  f  ) 
REALINLINE f32 irr::core::reciprocal_approxim ( const f32  f  ) 

Definition at line 504 of file irrMath.h.

REALINLINE s32 irr::core::reciprocal_squareroot ( const s32  x  ) 

Definition at line 458 of file irrMath.h.

References reciprocal_squareroot().

REALINLINE f32 irr::core::reciprocal_squareroot ( const f32  f  ) 

Definition at line 432 of file irrMath.h.

REALINLINE f64 irr::core::reciprocal_squareroot ( const f64  x  ) 
REALINLINE s32 irr::core::round32 ( f32  x  ) 
f32 irr::core::round_ ( f32  x  )  [inline]

Definition at line 386 of file irrMath.h.

Referenced by round32().

s32 irr::core::s32_clamp ( s32  value,
s32  low,
s32  high 
) [inline]

Definition at line 256 of file irrMath.h.

References s32_max(), and s32_min().

s32 irr::core::s32_max ( s32  a,
s32  b 
) [inline]

Definition at line 250 of file irrMath.h.

Referenced by s32_clamp().

s32 irr::core::s32_min ( s32  a,
s32  b 
) [inline]

Definition at line 244 of file irrMath.h.

Referenced by s32_clamp().

REALINLINE void irr::core::setbit_cond ( u32 &  state,
s32  condition,
u32  mask 
)

Definition at line 379 of file irrMath.h.

REALINLINE s32 irr::core::squareroot ( const s32  f  ) 

Definition at line 420 of file irrMath.h.

References squareroot().

REALINLINE f64 irr::core::squareroot ( const f64  f  ) 

Definition at line 414 of file irrMath.h.

REALINLINE f32 irr::core::squareroot ( const f32  f  ) 
f32 irr::core::strtof10 ( const char *  in,
const char **  out = 0 
) [inline]

Converts a sequence of digits into a whole positive floating point value. Only digits 0 to 9 are parsed. Parsing stops at any other character, including sign characters or a decimal point.

Parameters:
in,: the sequence of digits to convert.
out,: (optional) will be set to point at the first non-converted character.
Returns:
The whole positive floating point representation of the digit sequence.

Definition at line 86 of file fast_atof.h.

Referenced by fast_atof_move().

s32 irr::core::strtol10 ( const char *  in,
const char **  out = 0 
) [inline]

Convert a simple string of base 10 digits into a signed 32 bit integer.

Parameters:
[in] in,: The string of digits to convert. Only a leading - or + followed by digits 0 to 9 will be considered. Parsing stops at the first non-digit.
[out] out,: (optional) If provided, it will be set to point at the first character not used in the calculation.
Returns:
The signed integer value of the digits. If the string specifies too many digits to encode in an s32 then +INT_MAX or -INT_MAX will be returned.

Definition at line 44 of file fast_atof.h.

Referenced by fast_atof_move().

template<class T1 , class T2 >
void irr::core::swap ( T1 &  a,
T2 &  b 
) [inline]

swaps the content of the passed parameters

Definition at line 170 of file irrMath.h.


Variable Documentation

const f32 irr::core::DEGTORAD = PI / 180.0f
const f64 irr::core::DEGTORAD64 = PI64 / 180.0
const float irr::core::fast_atof_table[17]
Initial value:
 {
        0.f,
        0.1f,
        0.01f,
        0.001f,
        0.0001f,
        0.00001f,
        0.000001f,
        0.0000001f,
        0.00000001f,
        0.000000001f,
        0.0000000001f,
        0.00000000001f,
        0.000000000001f,
        0.0000000000001f,
        0.00000000000001f,
        0.000000000000001f,
        0.0000000000000001f
}

Definition at line 16 of file fast_atof.h.

Referenced by fast_atof_move().

const f32 irr::core::HALF_PI = PI/2.0f

Constant for half of PI.

Definition at line 55 of file irrMath.h.

IRRLICHT_API const matrix4 irr::core::IdentityMatrix
const f32 irr::core::PI = 3.14159265359f
const f64 irr::core::PI64 = 3.1415926535897932384626433832795028841971693993751

Constant for 64bit PI.

Definition at line 61 of file irrMath.h.

const f32 irr::core::RADTODEG = 180.0f / PI

32bit constant for converting from radians to degrees (formally known as GRAD_PI)

Definition at line 70 of file irrMath.h.

Referenced by radToDeg().

const f64 irr::core::RADTODEG64 = 180.0 / PI64
const f32 irr::core::RECIPROCAL_PI = 1.0f/PI

Constant for reciprocal of PI.

Definition at line 52 of file irrMath.h.

Constant for 64bit reciprocal of PI.

Definition at line 64 of file irrMath.h.

const f64 irr::core::ROUNDING_ERROR_f64 = 0.00000001

Definition at line 43 of file irrMath.h.

Referenced by irr::core::plane3d< f32 >::getIntersectionWithPlane().

Rounding error constant often used when comparing f32 values.

Definition at line 41 of file irrMath.h.


The Irrlicht Engine
The Irrlicht Engine Documentation © 2003-2010 by Nikolaus Gebhardt. Generated on Sun Oct 24 12:42:03 2010 by Doxygen (1.6.2)