Some software bricks extracted from the An support library.

Classes
struct	Enki::Vector
	A vector in a 2D space. More...
struct	Enki::Matrix22
	A 2x2 matrix. More...
struct	Enki::Segment
	A segment in a 2D space, basically two points. More...
struct	Enki::Polygone
	Polygone, which is a vector of points. Anti-clockwise, standard trigonometric orientation. More...
class	Enki::FastRandom
	A fast random generator. More...

Typedefs
typedef Vector	Enki::Point
	A point in a 2D space, another name for a vector. More...

Functions
std::ostream &	Enki::operator<< (std::ostream &outs, const Polygone &polygone)
	Print a polygone to a stream. More...
double	Enki::normalizeAngle (double angle)
	Normlize an angle to be between -PI and +PI. More...
Point	Enki::getIntersection (const Segment &s1, const Segment &s2)
	get the intersection point between two line segments returns Point(HUGE_VAL, HUGE_VAL) if there's no intersection added by yvan..nosp@m.bour.nosp@m.quin@.nosp@m.epfl.nosp@m..ch More...
double	Enki::getTriangleAreaTwice (const Point &a, const Point &b, const Point &c)
	Returns 2 times the signed triangle area. More...
double	Enki::getTriangleHeight (const Point &a, const Point &b, const Point &c)
	Returns signed height of triangle abc with base ab. More...
double	Enki::uniformRand (void)
	Return a number in [0;1[ in a uniform distribution. More...
unsigned	Enki::intRand (unsigned max)
	Return a number between [0;max[ in integer in a uniform distribution. More...
bool	Enki::boolRand (double prob=0.5)
	Return true with a probability prob. If no argument is given, prob = 0.5. More...
double	Enki::gaussianRand (double mean, double sigm)
	Return a random number with a gaussian distribution of a certain mean and standard deviation. More...

Detailed Description

This includes the Color type, a collection of several random distributions and some geometric primitives.

Typedef Documentation

typedef Vector Enki::Point

A point in a 2D space, another name for a vector.

Function Documentation

bool Enki::boolRand ( double  prob = 0.5 )

inline

Return true with a probability prob. If no argument is given, prob = 0.5.

References Enki::uniformRand().

double Enki::gaussianRand ( double  mean, double  sigm  )

inline

Return a random number with a gaussian distribution of a certain mean and standard deviation.

References Enki::uniformRand().

Referenced by Enki::IRSensor::finalize(), Enki::GroundSensor::init(), and Enki::ActiveSoundSource::realisticSetSound().

Point Enki::getIntersection ( const Segment &  s1, const Segment &  s2  )

inline

get the intersection point between two line segments returns Point(HUGE_VAL, HUGE_VAL) if there's no intersection added by yvan..nosp@m.bour.nosp@m.quin@.nosp@m.epfl.nosp@m..ch

References Enki::Segment::a, Enki::Segment::b, Enki::Vector::x, and Enki::Vector::y.

double Enki::getTriangleAreaTwice ( const Point &  a, const Point &  b, const Point &  c  )

inline

Returns 2 times the signed triangle area.

positive if abc winds counter-clockwise, negative if abc winds clockwise, zero if abc is degenerate. See: Real-time collision detection, C. Ericson, Page 152

References Enki::Vector::x, and Enki::Vector::y.

Referenced by Enki::getTriangleHeight(), and Enki::World::isPointInside().

double Enki::getTriangleHeight ( const Point &  a, const Point &  b, const Point &  c  )

inline

Returns signed height of triangle abc with base ab.

positive if abc winds counter-clockwise negative if abc winds clockwise, zero if abc is degenerate.

References Enki::getTriangleAreaTwice(), and Enki::Vector::norm().

Referenced by Enki::World::isPointInside().

unsigned Enki::intRand ( unsigned  max )

inline

Return a number between [0;max[ in integer in a uniform distribution.

double Enki::normalizeAngle ( double  angle )

inline

Normlize an angle to be between -PI and +PI.

References Enki::Vector::angle(), Enki::Vector::x, and Enki::Vector::y.

Referenced by Enki::PhysicalObject::finalizePhysicsInteractions(), and Enki::CircularCam::objectStep().

std::ostream & Enki::operator<<	(	std::ostream &	outs,
		const Polygone &	polygone
	)

Print a polygone to a stream.

double Enki::uniformRand ( void  )

inline

Return a number in [0;1[ in a uniform distribution.

Referenced by Enki::boolRand(), Enki::gaussianRand(), and Enki::UniformRand::operator()().