disti::Detail Namespace Reference

Data Structures
struct	DefaultInterpolator
struct	DefaultInterpolator< glsColor >
	Strings aren't interpreted, so they must be gated. More...
struct	DefaultInterpolator< GlsQuaternionD >
	Quaterions should be slerped by default. More...
struct	DefaultInterpolator< std::string >
	Strings aren't interpreted, so they must be gated. More...
struct	enable_if
	Create our own version of <type_traits> meta-function which is not available on all our target platforms. More...
struct	enable_if< true, T >
	Create our own version of <type_traits> function which is not available on all our target platforms. More...
struct	FloatSelector
	A helper class for choosing the required floating-point type. More...
struct	FloatSelector< Vector >
	Vector only handles float arithmetic. Most types can use the default. More...
struct	is_convertible
	Replacement for std::is_convertible, adapted from Loki 0.1.7. More...
struct	is_convertible< T, T >
struct	is_convertible< T, void >
struct	is_convertible< void, T >
struct	is_convertible< void, void >
struct	is_same
	Create our own version of <type_traits> meta-function which is not available on all our target platforms. More...
struct	is_same2
	For easier reading, test whether T is either the same type as U or the same as V. More...
struct	is_same< T, T >
	Create our own version of <type_traits> meta-function which is not available on all our target platforms. More...

Typedefs
typedef unsigned int	ID
	Type for unique identifiers. More...

Functions
template<class Value >
GlsKeyframeInterpolator< Value >::Ptr	CreateSlerp (typename enable_if< is_same2< Value, Vector, GlsQuaternionD >::value >::type *=0)
template<class Value >
GlsKeyframeInterpolator< Value >::Ptr	CreateSlerp (typename enable_if< !is_same2< Value, Vector, GlsQuaternionD >::value >::type *=0)
unsigned char	ToColorElement (const double d)
bool	FloatGreaterThan (const double lhs, const double rhs, const float tolerance=g_glsAnimationFloatTolerance)
bool	FloatLessThan (const double lhs, const double rhs, const float tolerance=g_glsAnimationFloatTolerance)
bool	FloatGreaterThanOrEqualTo (const double lhs, const double rhs, const float tolerance=g_glsAnimationFloatTolerance)
bool	FloatLessThanOrEqualTo (const double lhs, const double rhs, const float tolerance=g_glsAnimationFloatTolerance)
bool	IsNaN (const double d)
	Detects not-a-number (NaN) More...

Variables
const float	g_glsAnimationFloatTolerance = 1e-5f
	The tolerance for our floating-point comparisons. More...
const double	g_pi = 3.14159265358979323846
	Global constant for math. More...
const GlsKeyframeCurveBase::Key	g_nan = std::numeric_limits<GlsKeyframeCurveBase::Key>::quiet_NaN()
	Constant for not-a-number (NaN) for easier reading. More...

Typedef Documentation

typedef unsigned int disti::Detail::ID

Type for unique identifiers.

Definition at line 100 of file gls_keyframe.h.

Function Documentation

template<class Value >

GlsKeyframeInterpolator<Value>::Ptr disti::Detail::CreateSlerp

(

typename enable_if< is_same2< Value, Vector, GlsQuaternionD >::value >::type *

= 0

)

Returns a slerp for types that support it

Note

The unnamed parameter allows for type overloading via SFINAE. See documentation for std::enable_if.

Definition at line 767 of file gls_animation.h.

        {
            return typename GlsKeyframeInterpolator<Value>::Ptr( new GlsSphericalLinearInterpolator<Value>() );
        }

template<class Value >

GlsKeyframeInterpolator<Value>::Ptr disti::Detail::CreateSlerp

(

typename enable_if< !is_same2< Value, Vector, GlsQuaternionD >::value >::type *

= 0

)

Returns a null for types that don't support slerp (see previous function)

Note

The unnamed parameter allows for type overloading via SFINAE. See documentation for std::enable_if.

Definition at line 775 of file gls_animation.h.

        {
            std::cerr << "GlsAnimation: Slerp requested for a type that does not support it.\n";
            return typename GlsKeyframeInterpolator<Value>::Ptr();
        }

bool disti::Detail::FloatGreaterThan ( const double  lhs, const double  rhs, const float  tolerance = g_glsAnimationFloatTolerance  )

inline

Compares two floating-point numbers for greater than and fuzzy-not-equal, like lhs > rhs.

Parameters

lhs	The left-hand side
rhs	The right-hand side
tolerance	The floating-point tolerance for the equality check.

Definition at line 128 of file gls_keyframe.h.

        {
            return lhs > rhs && !Equal( lhs, rhs, tolerance );
        }

bool disti::Detail::FloatGreaterThanOrEqualTo ( const double  lhs, const double  rhs, const float  tolerance = g_glsAnimationFloatTolerance  )

inline

Compares two floating-point numbers for greater than or fuzzy-equal, like lhs >= rhs.

Parameters

lhs	The left-hand side
rhs	The right-hand side
tolerance	The floating-point tolerance for the equality check.

Definition at line 146 of file gls_keyframe.h.

        {
            return lhs > rhs || Equal( lhs, rhs, tolerance );
        }

bool disti::Detail::FloatLessThan ( const double  lhs, const double  rhs, const float  tolerance = g_glsAnimationFloatTolerance  )

inline

Compares two floating-point numbers for less than and fuzzy-not-equal, like lhs < rhs.

Parameters

lhs	The left-hand side
rhs	The right-hand side
tolerance	The floating-point tolerance for the equality check.

Definition at line 137 of file gls_keyframe.h.

        { 
            return lhs < rhs && !Equal( lhs, rhs, tolerance ); 
        }

bool disti::Detail::FloatLessThanOrEqualTo ( const double  lhs, const double  rhs, const float  tolerance = g_glsAnimationFloatTolerance  )

inline

Compares two floating-point numbers for less than or fuzzy-equal, like lhs <= rhs.

Parameters

lhs	The left-hand side
rhs	The right-hand side
tolerance	The floating-point tolerance for the equality check.

Definition at line 155 of file gls_keyframe.h.

        {
            return lhs < rhs || Equal( lhs, rhs, tolerance );
        }

bool disti::Detail::IsNaN ( const double  d )

inline

Detects not-a-number (NaN)

Definition at line 1258 of file gls_keyframe.h.

        {
          #ifdef __FAST_MATH__ 
            // GCC's -ffast-math flag doesn't support d != d checking for NaN, so we have to compare bit patterns
            return 0 == std::memcmp( reinterpret_cast<const void*>( &d ), reinterpret_cast<const void*>( &g_nan ), sizeof( double ) );
          #else
            return d != d;
          #endif
        }

unsigned char disti::Detail::ToColorElement ( const double  d )

inline

Converts a double value approximately in the range 0-255 to a clamped unsigned char value that is certainly in that range.

Note

This function may require -ffloat-store on GCC or other platform specific floating-point options

Definition at line 116 of file gls_keyframe.h.

        {
            const unsigned int trunc = static_cast<unsigned int>( d + 0.5 );
            // Extra parens avoid the NOMINMAX problems on Windows
            return static_cast<unsigned char>( (std::min)( (std::max)( trunc, 0u ), 255u ) );
        }

Variable Documentation

const float disti::Detail::g_glsAnimationFloatTolerance = 1e-5f

The tolerance for our floating-point comparisons.

Definition at line 103 of file gls_keyframe.h.

const GlsKeyframeCurveBase::Key disti::Detail::g_nan = std::numeric_limits<GlsKeyframeCurveBase::Key>::quiet_NaN()

Constant for not-a-number (NaN) for easier reading.

Definition at line 1254 of file gls_keyframe.h.

const double disti::Detail::g_pi = 3.14159265358979323846

Global constant for math.

Definition at line 106 of file gls_keyframe.h.