utilities.inl File Reference

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Functions
int	IntSquareRoot (int n)
bool	IsSquare (int n)
void	VectorToSphericalCoords (const sheep::Vector3 &v, sheep::Real *phi, sheep::Real *theta)
sheep::Vector3	SphericalCoordsToVector (sheep::Real phi, sheep::Real theta)
void	PackSphericalCoords (sheep::Real phi, sheep::Real theta, sheep::uint8 *qphi, sheep::uint8 *qtheta)
void	UnpackSphericalCoords (sheep::uint8 qphi, sheep::uint8 qtheta, sheep::Real *phi, sheep::Real *theta)
void	PackSphericalCoords (sheep::Real phi, sheep::Real theta, sheep::uint8 *q)
void	UnpackSphericalCoords (sheep::uint8 q, sheep::Real *phi, sheep::Real *theta)
void	PackDirection (const sheep::Vector3 &v, sheep::uint8 *qphi, sheep::uint8 *qtheta)
	Helper function.
void	PackDirection (const sheep::Vector3 &v, sheep::uint8 *q)
	Helper function.
sheep::Vector3	UnpackDirection (sheep::uint8 qphi, sheep::uint8 qtheta)
sheep::Vector3	UnpackDirection (sheep::uint8 q)

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Function Documentation

int IntSquareRoot (  int  n  )  [inline]

Definition at line 24 of file utilities.inl. Referenced by IsSquare().

bool IsSquare (  int  n  )  [inline]

Definition at line 29 of file utilities.inl. References IntSquareRoot(), and sheep::sq().

void PackDirection (  const sheep::Vector3 &  v, sheep::uint8 *  q )  [inline]

Helper function. Definition at line 160 of file utilities.inl. References PackSphericalCoords(), sheep::Real, and VectorToSphericalCoords().

void PackDirection (  const sheep::Vector3 &  v, sheep::uint8 *  qphi, sheep::uint8 *  qtheta )  [inline]

Helper function. Definition at line 150 of file utilities.inl. References PackSphericalCoords(), sheep::Real, and VectorToSphericalCoords().

void PackSphericalCoords (  sheep::Real  phi, sheep::Real  theta, sheep::uint8 *  q )  [inline]

Packs a direction expressed in spherical coordinates to a compact 8-bit representation. Definition at line 108 of file utilities.inl. References sheep::NormalizeAngle(), and sheep::Real. Referenced by PackDirection().

void PackSphericalCoords (  sheep::Real  phi, sheep::Real  theta, sheep::uint8 *  qphi, sheep::uint8 *  qtheta )  [inline]

Packs a direction expressed in spherical coordinates to a compact 16-bit representation. Definition at line 68 of file utilities.inl. References sheep::NormalizeAngle(), and sheep::Real.

sheep::Vector3 SphericalCoordsToVector (  sheep::Real  phi, sheep::Real  theta )  [inline]

Converts from spherical coordinates to cartesian coordinates. Returned vector is unit-length. Definition at line 54 of file utilities.inl. References sheep::Vector3::IsUnitLength(), and sheep::Real. Referenced by toxic::Sphere::ComputeIrradiance(), and toxic::ConversionTables::ConversionTables().

sheep::Vector3 UnpackDirection (  sheep::uint8  q  )  [inline]

Not a helper function. Same as UnpackSphericalCoords() followed by SphericalCoordsToVector(), but much faster. Definition at line 181 of file utilities.inl.

sheep::Vector3 UnpackDirection (  sheep::uint8  qphi, sheep::uint8  qtheta )  [inline]

Not a helper function. Same as UnpackSphericalCoords() followed by SphericalCoordsToVector(), but much faster. Definition at line 167 of file utilities.inl. References sheep::Vector3::IsUnitLength(), and sheep::Real.

void UnpackSphericalCoords (  sheep::uint8  q, sheep::Real *  phi, sheep::Real *  theta )  [inline]

Unpacks spherical coordinates from the 16-bit representation. phi is in [0, 2*Pi], theta is in [0, Pi]. Todo: Could be faster with a conversion table. Definition at line 135 of file utilities.inl. References sheep::Real.

void UnpackSphericalCoords (  sheep::uint8  qphi, sheep::uint8  qtheta, sheep::Real *  phi, sheep::Real *  theta )  [inline]

Unpacks spherical coordinates from the 16-bit representation. phi is in [0, 2*Pi], theta is in [0, Pi]. Todo: Could be faster with a conversion table. Definition at line 96 of file utilities.inl. References sheep::Real.

void VectorToSphericalCoords (  const sheep::Vector3 &  v, sheep::Real *  phi, sheep::Real *  theta )  [inline]

Converts from cartesian coordinates to spherical coordinates. v must be a unit-length vector. phi is in [0, 2*Pi], theta is in [0, Pi]. Todo: Turn the multiplication into an addition. Definition at line 34 of file utilities.inl. References sheep::Vector3::IsUnitLength(), sheep::Vector3::m_x, sheep::Vector3::m_y, sheep::Vector3::m_z, and sheep::Real. Referenced by toxic::PhotonMap::BuildPhotonDirectionHistogram(), and PackDirection().

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