numeric.cpp File Reference

#include "numeric.h"
#include "constants.h"
#include "noise.h"
#include <cstring>
#include <cmath>

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Functions
u32	myrand ()
void	mysrand (u64 seed)
void	myrand_bytes (void *out, size_t len)
float	myrand_float ()
int	myrand_range (int min, int max)
float	myrand_range (float min, float max)
u64	murmur_hash_64_ua (const void *key, size_t len, unsigned int seed)
	Calculate MurmurHash64A hash for an arbitrary block of data.
bool	isBlockInSight (v3s16 blockpos_b, v3f camera_pos, v3f camera_dir, f32 camera_fov, f32 range, f32 *distance_ptr)
float	adjustDist (float dist, float zoom_fov)
s16	adjustDist (s16 dist, float zoom_fov)
void	setPitchYawRollRad (core::matrix4 &m, v3f rot)
v3f	getPitchYawRollRad (const core::matrix4 &m)

Variables
static PcgRandom	g_pcgrand

Function Documentation

adjustDist() [1/2]

float adjustDist ( float dist, float zoom_fov )

inline

Referenced by adjustDist(), DirectionalLight::createSplitMatrices(), RemoteClient::GetNextBlocks(), and Camera::updateViewingRange().

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adjustDist() [2/2]

s16 adjustDist	(	s16	dist,
		float	zoom_fov )

References adjustDist().

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getPitchYawRollRad()

v3f getPitchYawRollRad

(

const core::matrix4 &

m

)

See also

setPitchYawRollRad

Referenced by getPitchYawRoll(), and TestUtilities::testEulerConversion().

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isBlockInSight()

bool isBlockInSight	(	v3s16	blockpos_b,
		v3f	camera_pos,
		v3f	camera_dir,
		f32	camera_fov,
		f32	range,
		f32 *	distance_ptr = nullptr )

Parameters

blockpos_b	position of block in block coordinates
camera_pos	position of camera in nodes
camera_dir	an unit vector pointing to camera direction
range	viewing range
distance_ptr	return location for distance from the camera

References BLOCK_MAX_RADIUS, BS, and MAP_BLOCKSIZE.

Referenced by fillViewConeBlock(), RemoteClient::GetNextBlocks(), and TestUtilities::testIsBlockInSight().

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murmur_hash_64_ua()

u64 murmur_hash_64_ua ( const void * key, size_t len, unsigned int seed )

nodiscard

Calculate MurmurHash64A hash for an arbitrary block of data.

Parameters

key	data to hash (does not need to be aligned)
len	length in bytes
seed	initial seed value

Returns

hash value

Referenced by check_field_or_nil(), getHashForString(), init_common(), ModApiBase::l_deprecated_function(), logOnce(), read_seed(), and script_log_unique().

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myrand()

u32 myrand

(

)

References g_pcgrand, and PcgRandom::next().

Referenced by Sky::Sky(), ObjDefManager::addRaw(), ScriptApiServer::allocateDynamicMediaCallback(), ISoundManager::allocateId(), ABMHandler::apply(), Game::createClient(), ImageSource::generateImagePart(), sound::OpenALSoundManager::getLoadedSoundNameFromGroup(), TestBase::getTestTempFile(), MyRandGenerator::operator()(), MapgenV6::placeTreesAndJungleGrass(), RandomInputHandler::Rand(), and UDPSocket::Send().

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myrand_bytes()

void myrand_bytes	(	void *	out,
		size_t	len )

References PcgRandom::bytes(), and g_pcgrand.

Referenced by GUIDGenerator::GUIDGenerator(), httpfetch_caller_alloc_secure(), and MapgenParams::readParams().

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myrand_float()

float myrand_float

(

)

References g_pcgrand, PcgRandom::next(), and U32_MAX.

Referenced by ParticleSpawner::ParticleSpawner(), myrand_range(), ParticleParamTypes::RangedParameter< T >::pickWithin(), and ParticleSpawner::step().

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myrand_range() [1/2]

float myrand_range	(	float	min,
		float	max )

References myrand_float().

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myrand_range() [2/2]

int myrand_range	(	int	min,
		int	max )

References g_pcgrand, and PcgRandom::range().

Referenced by ABMWithState::ABMWithState(), ParticleManager::addNodeParticle(), MapBlockMesh::animate(), benchGetObjectsInArea(), ParticleParamTypes::TweenedParameter< T >::blend(), Schematic::blitToVManip(), con::Connection::createPeer(), Server::findSpawnPos(), ClientMap::getBackgroundBrightness(), ParticleManager::getNodeParticleParams(), Map::isBlockOccluded(), ClientLauncher::launch_game(), Schematic::placeOnMap(), Schematic::placeOnVManip(), MapgenV6::placeTreesAndJungleGrass(), readRandomBlocks(), and ParticleSpawner::spawnParticle().

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mysrand()

void mysrand

(

u64

seed

)

References g_pcgrand, and PcgRandom::seed().

Referenced by init_common().

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setPitchYawRollRad()

void setPitchYawRollRad	(	core::matrix4 &	m,
		v3f	rot )

Note

Uses (extrinsic) Z-X-Y rotation order, left-handed rotation

This is not consistent with matrix4::setRotationRadians

Referenced by setPitchYawRoll(), TEST_CASE(), and TestUtilities::testEulerConversion().

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Variable Documentation

g_pcgrand

PcgRandom g_pcgrand

static

Referenced by myrand(), myrand_bytes(), myrand_float(), myrand_range(), and mysrand().