Classes |
union | irr::core::inttofloat |
Namespaces |
namespace | irr |
| Everything in the Irrlicht Engine can be found in this namespace.
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namespace | irr::core |
| Basic classes such as vectors, planes, arrays, lists, and so on can be found in this namespace.
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Defines |
#define | AIR(x) (IR(x)&0x7fffffff) |
| Absolute integer representation of a floating-point value.
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#define | F32_A_GREATER_B(a, b) ((a) > (b)) |
#define | F32_AS_S32(f) (*((s32 *) &(f))) |
#define | F32_AS_U32(f) (*((u32 *) &(f))) |
#define | F32_AS_U32_POINTER(f) ( ((u32 *) &(f))) |
#define | F32_EQUAL_0(n) ((n) == 0.0f) |
#define | F32_EQUAL_1(n) ((n) == 1.0f) |
#define | F32_EXPON_MANTISSA 0x7FFFFFFFU |
#define | F32_GREATER_0(n) ((n) > 0.0f) |
#define | F32_GREATER_EQUAL_0(n) ((n) >= 0.0f) |
#define | F32_LOWER_0(n) ((n) < 0.0f) |
#define | F32_LOWER_EQUAL_0(n) ((n) <= 0.0f) |
#define | F32_SIGN_BIT 0x80000000U |
#define | F32_VALUE_0 0x00000000 |
#define | F32_VALUE_1 0x3f800000 |
#define | IEEE_1_0 0x3f800000 |
| integer representation of 1.0
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#define | IEEE_255_0 0x437f0000 |
| integer representation of 255.0
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Functions |
template<class T > |
T | irr::core::abs_ (const T &a) |
| returns abs of two values. Own implementation to get rid of STL (VS6 problems)
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REALINLINE s32 | irr::core::ceil32 (f32 x) |
template<class T > |
const T | irr::core::clamp (const T &value, const T &low, const T &high) |
| clamps a value between low and high
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REALINLINE void | irr::core::clearFPUException () |
f32 | irr::core::degToRad (f32 degrees) |
| Utility function to convert a degrees value to radians.
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f64 | irr::core::degToRad (f64 degrees) |
| Utility function to convert a degrees value to radians.
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bool | irr::core::equals (const f64 a, const f64 b, const f64 tolerance=ROUNDING_ERROR_f64) |
| returns if a equals b, taking possible rounding errors into account
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bool | irr::core::equals (const f32 a, const f32 b, const f32 tolerance=ROUNDING_ERROR_f32) |
| returns if a equals b, taking possible rounding errors into account
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bool | irr::core::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
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bool | irr::core::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
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f32 | irr::core::f32_max3 (const f32 a, const f32 b, const f32 c) |
f32 | irr::core::f32_min3 (const f32 a, const f32 b, const f32 c) |
REALINLINE s32 | irr::core::floor32 (f32 x) |
f32 | irr::core::FR (u32 x) |
| Floating-point representation of an integer value.
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f32 | irr::core::FR (s32 x) |
f32 | irr::core::fract (f32 x) |
REALINLINE u32 | irr::core::if_c_a_else_0 (const s32 condition, const u32 a) |
| conditional set based on mask and arithmetic shift
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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
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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
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u32 | irr::core::IR (f32 x) |
bool | irr::core::isnotzero (const f32 a, const f32 tolerance=ROUNDING_ERROR_f32) |
| returns if a equals not zero, taking rounding errors into account
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bool | irr::core::iszero (const f64 a, const f64 tolerance=ROUNDING_ERROR_f64) |
| returns if a equals zero, taking rounding errors into account
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bool | irr::core::iszero (const f32 a, const f32 tolerance=ROUNDING_ERROR_f32) |
| returns if a equals zero, taking rounding errors into account
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bool | irr::core::iszero (const s32 a, const s32 tolerance=0) |
| returns if a equals zero, taking rounding errors into account
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bool | irr::core::iszero (const u32 a, const u32 tolerance=0) |
| returns if a equals zero, taking rounding errors into account
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template<class T > |
T | irr::core::lerp (const T &a, const T &b, const f32 t) |
template<class T > |
const T & | irr::core::max_ (const T &a, const T &b) |
| returns maximum of two values. Own implementation to get rid of the STL (VS6 problems)
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template<class T > |
const T & | irr::core::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)
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template<class T > |
const T & | irr::core::min_ (const T &a, const T &b) |
| returns minimum of two values. Own implementation to get rid of the STL (VS6 problems)
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template<class T > |
const T & | irr::core::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)
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f32 | irr::core::radToDeg (f32 radians) |
| Utility function to convert a radian value to degrees.
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f64 | irr::core::radToDeg (f64 radians) |
| Utility function to convert a radian value to degrees.
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REALINLINE f32 | irr::core::reciprocal (const f32 f) |
REALINLINE f64 | irr::core::reciprocal (const f64 f) |
REALINLINE f32 | irr::core::reciprocal_approxim (const f32 f) |
REALINLINE f64 | irr::core::reciprocal_squareroot (const f64 x) |
REALINLINE f32 | irr::core::reciprocal_squareroot (const f32 f) |
REALINLINE s32 | irr::core::reciprocal_squareroot (const s32 x) |
REALINLINE s32 | irr::core::round32 (f32 x) |
f32 | irr::core::round_ (f32 x) |
s32 | irr::core::s32_clamp (s32 value, s32 low, s32 high) |
s32 | irr::core::s32_max (s32 a, s32 b) |
s32 | irr::core::s32_min (s32 a, s32 b) |
REALINLINE void | irr::core::setbit_cond (u32 &state, s32 condition, u32 mask) |
REALINLINE f32 | irr::core::squareroot (const f32 f) |
REALINLINE f64 | irr::core::squareroot (const f64 f) |
REALINLINE s32 | irr::core::squareroot (const s32 f) |
template<class T1 , class T2 > |
void | irr::core::swap (T1 &a, T2 &b) |
| swaps the content of the passed parameters
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Variables |
const f32 | irr::core::DEGTORAD = PI / 180.0f |
| 32bit Constant for converting from degrees to radians
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const f64 | irr::core::DEGTORAD64 = PI64 / 180.0 |
| 64bit constant for converting from degrees to radians (formally known as GRAD_PI2)
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const f32 | irr::core::HALF_PI = PI/2.0f |
| Constant for half of PI.
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const f32 | irr::core::PI = 3.14159265359f |
| Constant for PI.
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const f64 | irr::core::PI64 = 3.1415926535897932384626433832795028841971693993751 |
| Constant for 64bit PI.
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const f32 | irr::core::RADTODEG = 180.0f / PI |
| 32bit constant for converting from radians to degrees (formally known as GRAD_PI)
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const f64 | irr::core::RADTODEG64 = 180.0 / PI64 |
| 64bit constant for converting from radians to degrees
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const f32 | irr::core::RECIPROCAL_PI = 1.0f/PI |
| Constant for reciprocal of PI.
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const f64 | irr::core::RECIPROCAL_PI64 = 1.0/PI64 |
| Constant for 64bit reciprocal of PI.
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const f32 | irr::core::ROUNDING_ERROR_f32 = 0.000001f |
const f64 | irr::core::ROUNDING_ERROR_f64 = 0.00000001 |
const s32 | irr::core::ROUNDING_ERROR_S32 = 0 |
| Rounding error constant often used when comparing f32 values.
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