#include <GU_SDF.h>

Public Types
enum	sdfImplicitType { SDF_EXPLICIT, SDF_SPHERE, SDF_PLANE, SDF_BOX, SDF_HEIGHTFIELD }

Public Member Functions
	GU_SDF ()

virtual	~GU_SDF ()

void	build (const GU_Detail *gdp, const GU_SDFParms &parms)
	Build from the given gdp. More...

void	initEmpty (const UT_BoundingBox &bbox, int xres, int yres, int zres)

UT_VoxelArrayF *	getFunction () const

const GEO_PrimVolumeXform &	getHeightXform () const
	Returns the transform of a heightfield SDF. More...

int	getHeightAxis () const
	Returns the vertical axis of a heightfield SDF. More...

bool	isImplicit () const

bool	isValid () const

sdfImplicitType	getImplicitType () const
	Returns the type of implicit surface, if any. More...

const UT_Vector3 &	getImplicitNormal () const

void	getDivisions (int &xdiv, int &ydiv, int &zdiv) const

fpreal	getDistance (const UT_Vector3 &pos) const
	Calculates the SDF field at the point. More...

fpreal	getFastDistance (const UT_Vector3 &pos, fpreal &tol) const

UT_Vector3	getGradient (const UT_Vector3 &pos) const
	Returns the gradient of the SDF at the point. More...

UT_Vector3	findClosest (const UT_Vector3 &pos, fpreal iso=0.0, fpreal cfl_cond=0.9, fpreal tol=1e-3) const

UT_Vector3	advect (const UT_Vector3 &pos, fpreal dist, fpreal cfl_cond=0.9f, bool normalize_gradient=true) const

bool	findSmallestOnEdge (fpreal &minvalue, UT_Vector3 &result, const UT_Vector3 &a, const UT_Vector3 &b, fpreal cutoff=SYS_FPREAL_MAX) const

bool	findSmallestOnTri (fpreal &minValue, UT_Vector2 &resultBary, const UT_Vector3 &p0, const UT_Vector3 &p1, const UT_Vector3 &p2, fpreal cutoff=SYS_FPREAL_MAX) const

template<typename FLOAT >
bool	findRayIntersection (UT_Vector3T< FLOAT > &result, const UT_Vector3T< FLOAT > &a, const UT_Vector3T< FLOAT > &b, fpreal boundaryvalue=0.0) const

const UT_Vector3 &	getVoxelSize () const

fpreal	getVoxelDiameter () const

const UT_Vector3 &	getSize () const

const UT_Vector3 &	getOrig () const

void	setOrig (const UT_Vector3 &o)

void	setSize (const UT_Vector3 &s)

void	computeCenterOfMass (UT_Vector3 &centerofmass) const
	Computes the center of mass of the SDF. More...

fpreal	computeVolume () const
	Computes the volume of the SDF. More...

void	computeInertialTensor (UT_DMatrix3 &tensor, const UT_Vector3 &centerofmass) const

int64	getMemoryUsage () const
	Returns the amount of memory used by this object. More...

bool	isInverted () const

void	setInverted (bool invert)

fpreal	getOffset () const

void	setOffset (fpreal offset)

void	save (std::ostream &os) const

bool	load (UT_IStream &is)

Static Public Member Functions
static void	expandBounds (UT_BoundingBox &bbox, int xres, int yres, int zres)

static bool	isMultithreaded (const GU_SDFParms &parms)
	Returns whether the specified build mode is multithreaded. More...

Protected Member Functions
void	sendRays (const GU_Detail *gdp, bool laserscan, bool usemetafield, fpreal tol)

void	fixSigns (bool forcebounds)

int	findConsensus (int x, int y, int z, int iteration, fpreal alpha, fpreal beta, UT_Array< gu_sdf_voxpos > &flippedlist)

int	fastSweepCorrect (GU_RayIntersect *isect, int axis, int dir, fpreal alpha, fpreal tol)

void	rasterize (const GEO_Primitive *prim)
	Rasterizers... More...

void	rasterizePoly (const GEO_PrimPoly *poly)

void	rasterizeRawTri (UT_Vector3 p1, UT_Vector3 p2, UT_Vector3 p3)
	This takes coordinates in cell space. More...

void	setCellDist (int x, int y, int z, fpreal dist, fpreal maxdist=-1.0)

void	setCellTentative (int x, int y, int z, fpreal tentative)
	Sets a tentative value to a given cell. More...

gu_sdf_qelem *	getQElem (int x, int y, int z, bool create=true)

void	updateQElem (gu_sdf_qelem *qelem)
	If you change the weight of the qelem, this will update the queue. More...

fpreal	findMinDist (int x, int y, int z, fpreal olddist) const

void	propagateQueue (fpreal maxdist)

void	buildFromMinDist (GU_RayIntersect &isect, int x, int y, int z, int xw, int yw, int zw)

void	buildFromPointCloud (const GU_Detail *gdp, const GU_SDFParms &parms)

bool	findZeroCrossing (UT_VoxelROProbeCubeF &src_probe, fpreal &voxeldist, const fpreal isocontour)

void	buildFromVolumeFIM (const UT_VoxelArrayF &src, const fpreal isocontour, const fpreal maxdist, const fpreal tolerance, const int iterations)

	THREADED_METHOD7 (GU_SDF, activelist.entries() > 100, solveEikonalIterationFIM, UT_VoxelArrayF &, dst, UT_Array< UT_Array< UT_Vector3I >> &, newlist, UT_Array< bool > &, tileoccupied, const UT_VoxelArrayF &, olddst, const UT_Array< UT_Vector3I > &, activelist, const fpreal, maxdist, const fpreal, tolerance)

void	solveEikonalIterationFIMPartial (UT_VoxelArrayF &dst, UT_Array< UT_Array< UT_Vector3I >> &newlist, UT_Array< bool > &tileoccupied, const UT_VoxelArrayF &olddst, const UT_Array< UT_Vector3I > &activelist, const fpreal maxdist, const fpreal tolerance, const UT_JobInfo &info)

	THREADED_METHOD1 (GU_SDF, activelist.entries() > 100, assignSolvableLabelsFIM, const UT_Array< UT_Vector3I > &, activelist)

void	assignSolvableLabelsFIMPartial (const UT_Array< UT_Vector3I > &activelist, const UT_JobInfo &info)

	THREADED_METHOD1 (GU_SDF, activelist.entries() > 100, removeSolvableLabelsFIM, const UT_Array< UT_Vector3I > &, activelist)

void	removeSolvableLabelsFIMPartial (const UT_Array< UT_Vector3I > &activelist, const UT_JobInfo &info)

	THREADED_METHOD2 (GU_SDF, myQueueIndices->numTiles() > 20, loadFinishedCellNeighboursFIM, UT_Array< UT_Array< UT_Vector3I >> &, newlist, UT_Array< bool > &, tileoccupied)

void	loadFinishedCellNeighboursFIMPartial (UT_Array< UT_Array< UT_Vector3I >> &list, UT_Array< bool > &tileoccupied, const UT_JobInfo &info)

	THREADED_METHOD3 (GU_SDF, occupied.entries() > 100, uncompressActiveTilesFIM, UT_VoxelArrayF &, olddst, UT_VoxelArrayF &, dst, const UT_Array< bool > &, occupied)

void	uncompressActiveTilesFIMPartial (UT_VoxelArrayF &olddst, UT_VoxelArrayF &dst, const UT_Array< bool > &occupied, const UT_JobInfo &info)

	THREADED_METHOD5 (GU_SDF, src.numTiles() > 20, computeAndLabelZeroCrossingsFIM, UT_VoxelArrayF &, dst, UT_VoxelArrayF &, olddst, const UT_VoxelArrayF &, src, const fpreal, isocontour, const fpreal, maxdist)

void	computeAndLabelZeroCrossingsFIMPartial (UT_VoxelArrayF &dst, UT_VoxelArrayF &olddst, const UT_VoxelArrayF &src, const fpreal isocontour, const fpreal maxdist, const UT_JobInfo &info)

	THREADED_METHOD5 (GU_SDF, src.numTiles() > 20, buildVolumeZeroCrossings, UT_Array< UT_Array< UT_Vector3I >> &, crossingindices, UT_Array< UT_Array< fpreal >> &, crossingdists, const UT_VoxelArrayF &, src, const fpreal, isocontour, const fpreal, maxdist)

void	buildVolumeZeroCrossingsPartial (UT_Array< UT_Array< UT_Vector3I >> &crossingindices, UT_Array< UT_Array< fpreal >> &crossingdists, const UT_VoxelArrayF &src, const fpreal isocontour, const fpreal maxdist, const UT_JobInfo &info)

void	buildFromVolume (const UT_VoxelArrayF &src, const fpreal isocontour, const fpreal maxdist)

UT_Plane	findPlaneFromNeighbour (const UT_Vector3 &sample, const GU_Detail *gdp, const GA_OffsetArray &neighbour, const GA_ROHandleV3 &normalattrib) const

	THREADED_METHOD2 (GU_SDF, myVoxels->numTiles() > 16, copyVolumeSamples, const GU_Detail , gdp, const UT_ValArray< const GEO_Primitive > &, volumes)

void	copyVolumeSamplesPartial (const GU_Detail gdp, const UT_ValArray< const GEO_Primitive > &volumes, const UT_JobInfo &info)

Protected Attributes
UT_VoxelArrayF *	myVoxels

sdfImplicitType	myImplicitType

UT_Vector3	myImplicitNormal

bool	myInvert

fpreal	myOffset
	This defines how far we should shift the zero isosurface of the SDF. More...

UT_Vector3	myOrig

UT_Vector3	mySize

GEO_PrimVolumeXform	myHeightXform

int	myHeightAxis

UT_Vector3	myVoxelSize
	This stores the size of a voxel along each axis. More...

fpreal	myVoxelDiameter
	This caches the diameter of a voxel cell. Ie, myVoxelSize.length() More...

UT_VoxelArray< int > *	myQueueIndices

UT_ValArray< gu_sdf_qelem * >	myQueueElements

UT_IntArray	myQueueFreeList

gu_sdf_queue *	myQueue

Detailed Description

GU_SDF This class builds a signed distance function from a given GU_Detail. Signed distance functions contain an approximate distance to the original surface in each voxel cell. If cell is inside the the geometry, it has a negative distance. Sidedness of geometry is determined by surface normals. The geometry should be relatively watertight.

Definition at line 302 of file GU_SDF.h.

Member Enumeration Documentation

enum GU_SDF::sdfImplicitType

Enumerator
SDF_EXPLICIT
SDF_SPHERE
SDF_PLANE
SDF_BOX
SDF_HEIGHTFIELD

Definition at line 308 of file GU_SDF.h.

Constructor & Destructor Documentation

GU_SDF::GU_SDF ( )

virtual GU_SDF::~GU_SDF ( )

virtual

Member Function Documentation

UT_Vector3 GU_SDF::advect	(	const UT_Vector3 &	pos,
		fpreal	dist,
		fpreal	cfl_cond = `0.9f`,
		bool	normalize_gradient = `true`
	)		const

Advects a point according to the SDF's gradient field. Advection continues until the point has moved the given distance. If normalize_gradient is false, it is moved until the given amount of time has passed.

void GU_SDF::assignSolvableLabelsFIMPartial	(	const UT_Array< UT_Vector3I > &	activelist,
		const UT_JobInfo &	info
	)

protected

void GU_SDF::build	(	const GU_Detail *	gdp,
		const GU_SDFParms &	parms
	)

Build from the given gdp.

void GU_SDF::buildFromMinDist	(	GU_RayIntersect &	isect,
		int	x,
		int	y,
		int	z,
		int	xw,
		int	yw,
		int	zw
	)

protected

Builds a shell of distance values around the geometry based on minimum distance values. We want to fill in the cell values from (x,y,z) to (x+xw-1,y+yw-1,z+zw-1) inclusive. We only fill values that are within a band about the surface, leaving the rest for FMM. This is because min distance calls are expensive!

void GU_SDF::buildFromPointCloud	(	const GU_Detail *	gdp,
		const GU_SDFParms &	parms
	)

protected

Builds a shell of distance values around the geometry from the point cloud data. If normals are present, they are used to calculate sidedness. Otherwise, the SDF becomes an unsigned distance-to-implicit surface.

void GU_SDF::buildFromVolume	(	const UT_VoxelArrayF &	src,
		const fpreal	isocontour,
		const fpreal	maxdist
	)

protected

Builds a shell of distance values around the given iso-contour of the volume. This allows one to then reinitialize an SDF function.

void GU_SDF::buildFromVolumeFIM	(	const UT_VoxelArrayF &	src,
		const fpreal	isocontour,
		const fpreal	maxdist,
		const fpreal	tolerance,
		const int	iterations
	)

protected

void GU_SDF::buildVolumeZeroCrossingsPartial	(	UT_Array< UT_Array< UT_Vector3I >> &	crossingindices,
		UT_Array< UT_Array< fpreal >> &	crossingdists,
		const UT_VoxelArrayF &	src,
		const fpreal	isocontour,
		const fpreal	maxdist,
		const UT_JobInfo &	info
	)

protected

void GU_SDF::computeAndLabelZeroCrossingsFIMPartial	(	UT_VoxelArrayF &	dst,
		UT_VoxelArrayF &	olddst,
		const UT_VoxelArrayF &	src,
		const fpreal	isocontour,
		const fpreal	maxdist,
		const UT_JobInfo &	info
	)

protected

void GU_SDF::computeCenterOfMass ( UT_Vector3 & centerofmass ) const

Computes the center of mass of the SDF.

void GU_SDF::computeInertialTensor	(	UT_DMatrix3 &	tensor,
		const UT_Vector3 &	centerofmass
	)		const

Computes the inertial tensor. You provide the center of mass for it to use. Each sample point of the SDF is treated as a point mass. The mass is 0 for cell-points outside of the object, 1 for those fully inside, and suitably scaled for others.

fpreal GU_SDF::computeVolume ( ) const

Computes the volume of the SDF.

void GU_SDF::copyVolumeSamplesPartial	(	const GU_Detail *	gdp,
		const UT_ValArray< const GEO_Primitive * > &	volumes,
		const UT_JobInfo &	info
	)

protected

static void GU_SDF::expandBounds	(	UT_BoundingBox &	bbox,
		int	xres,
		int	yres,
		int	zres
	)

static

Expands the given bounding box so it contains a two cell border on all sides. This helps condition the SDF stuff by ensuring the outer cells are all outside.

int GU_SDF::fastSweepCorrect	(	GU_RayIntersect *	isect,
		int	axis,
		int	dir,
		fpreal	alpha,
		fpreal	tol
	)

protected

Performs a fast sweep along the given axis. Any voxel pair that has a bad consensus will be raytested & flipped. The flip is then propagated. dir is +/-1 to represent a forward or back sweep.

UT_Vector3 GU_SDF::findClosest	(	const UT_Vector3 &	pos,
		fpreal	iso = `0.0`,
		fpreal	cfl_cond = `0.9`,
		fpreal	tol = `1e-3`
	)		const

Returns the closest point on the iso surface to the given point. The Courant-Friedreichs-Lewy condition governs how carefully we step to find the solution. 0.9 is near optimal, 0.5 is conservative.

int GU_SDF::findConsensus	(	int	x,
		int	y,
		int	z,
		int	iteration,
		fpreal	alpha,
		fpreal	beta,
		UT_Array< gu_sdf_voxpos > &	flippedlist
	)

protected

This finds consensus among the neighbours of this point It may then flip this points sign. If it does so, the point and it's neighbours are added to the list to be tested in the future. This uses myQueueIndices to track if a voxel has been added before. Returns 1 if a point flipped, 0 otherwise.

fpreal GU_SDF::findMinDist	(	int	x,
		int	y,
		int	z,
		fpreal	olddist
	)		const

protected

Calculates the distance to a cell by using the finalized distances to adjacent cells. The olddistance is used to determine sign.

UT_Plane GU_SDF::findPlaneFromNeighbour	(	const UT_Vector3 &	sample,
		const GU_Detail *	gdp,
		const GA_OffsetArray &	neighbour,
		const GA_ROHandleV3 &	normalattrib
	)		const

protected

Takes a list of GEO_Points and finds the best fititng plane which interpolates them. If noff is not -1, it will derive the normals from the point normals.

template<typename FLOAT >

bool GU_SDF::findRayIntersection	(	UT_Vector3T< FLOAT > &	result,
		const UT_Vector3T< FLOAT > &	a,
		const UT_Vector3T< FLOAT > &	b,
		fpreal	boundaryvalue = `0.0`
	)		const

Returns the point along a path where it first intersects the SDF. If the path doesn't intersect the SDF, this function returns false. If the start of the path is inside the SDF, the function returns true, and returns the starting point of the path as the intersection.

bool GU_SDF::findSmallestOnEdge	(	fpreal &	minvalue,
		UT_Vector3 &	result,
		const UT_Vector3 &	a,
		const UT_Vector3 &	b,
		fpreal	cutoff = `SYS_FPREAL_MAX`
	)		const

Finds the smallest value in the SDF along the given line segment. The value must be smaller than the cutoff value. Returns false if no close value found.

bool GU_SDF::findSmallestOnTri	(	fpreal &	minValue,
		UT_Vector2 &	resultBary,
		const UT_Vector3 &	p0,
		const UT_Vector3 &	p1,
		const UT_Vector3 &	p2,
		fpreal	cutoff = `SYS_FPREAL_MAX`
	)		const

Finds the smallest value in the SDF inside the given triangle. The value must be smaller than the cutoff value. Returns false if no close value found.

Note: this algorithm is far from perfect. It does only a very partial scan over the interior of the triangle, and it doesn't work well with implicit box SDFs.

bool GU_SDF::findZeroCrossing	(	UT_VoxelROProbeCubeF &	src_probe,
		fpreal &	voxeldist,
		const fpreal	isocontour
	)

protected

void GU_SDF::fixSigns ( bool forcebounds )

protected

This fixes the sign of the distance field by finding a consensus among neighbouring voxels. This requires myQueueIndices to be present. If forcebounds is set, it will make the boundary all positive in sign, making it easier to recover from holes.

fpreal GU_SDF::getDistance ( const UT_Vector3 & pos ) const

Calculates the SDF field at the point.

void GU_SDF::getDivisions	(	int &	xdiv,
		int &	ydiv,
		int &	zdiv
	)		const

Returns the divisions that the spaces is voxelized into. This is meaningful even for implicit surfaces, as they have a prefered division set for purposes like advection.

fpreal GU_SDF::getFastDistance	(	const UT_Vector3 &	pos,
		fpreal &	tol
	)		const

UT_VoxelArrayF* GU_SDF::getFunction ( ) const

inline

Definition at line 333 of file GU_SDF.h.

UT_Vector3 GU_SDF::getGradient ( const UT_Vector3 & pos ) const

Returns the gradient of the SDF at the point.

int GU_SDF::getHeightAxis ( ) const

inline

Returns the vertical axis of a heightfield SDF.

Definition at line 340 of file GU_SDF.h.

const GEO_PrimVolumeXform& GU_SDF::getHeightXform ( ) const

inline

Returns the transform of a heightfield SDF.

Definition at line 336 of file GU_SDF.h.

const UT_Vector3& GU_SDF::getImplicitNormal ( ) const

inline

The normal definining the implicit function. This is only meaninful for half-plane implicit functions.

Definition at line 364 of file GU_SDF.h.

sdfImplicitType GU_SDF::getImplicitType ( ) const

inline

Returns the type of implicit surface, if any.

Definition at line 359 of file GU_SDF.h.

int64 GU_SDF::getMemoryUsage ( ) const

Returns the amount of memory used by this object.

fpreal GU_SDF::getOffset ( ) const

inline

These offset the zero isosurface of the SDF. This means that getDistance() will always return getDistance() - offset, effectively inflating (if offset is positive) or deflating (if offset is negative) the object.

Offsetting happens before inversion.

Definition at line 485 of file GU_SDF.h.

const UT_Vector3& GU_SDF::getOrig ( ) const

inline

Definition at line 447 of file GU_SDF.h.

gu_sdf_qelem* GU_SDF::getQElem	(	int	x,
		int	y,
		int	z,
		bool	create = `true`
	)

protected

Gets or creates the qelement at the given location. Returns 0 if the element has already been processed.

const UT_Vector3& GU_SDF::getSize ( ) const

inline

Definition at line 446 of file GU_SDF.h.

fpreal GU_SDF::getVoxelDiameter ( ) const

inline

Definition at line 445 of file GU_SDF.h.

const UT_Vector3& GU_SDF::getVoxelSize ( ) const

inline

Definition at line 444 of file GU_SDF.h.

void GU_SDF::initEmpty	(	const UT_BoundingBox &	bbox,
		int	xres,
		int	yres,
		int	zres
	)

Initializes an empty sdf of a given resolution and from a given bounding box.

bool GU_SDF::isImplicit ( ) const

inline

Implicit SDFs have no array of voxels, instead defining themselves as a simple atomic shape.

Definition at line 344 of file GU_SDF.h.

bool GU_SDF::isInverted ( ) const

inline

These invert the sense of the SDF. This means the getDistance() function will always return -getDistance(), effectively turning the object inside out. This does not affect the calculation of volumes, etc! (Technically, an inverted SDF has infinite volume, which isn't all that useful anyways)

Definition at line 476 of file GU_SDF.h.

static bool GU_SDF::isMultithreaded ( const GU_SDFParms & parms )

inlinestatic

Returns whether the specified build mode is multithreaded.

Definition at line 353 of file GU_SDF.h.

bool GU_SDF::isValid ( ) const

inline

Definition at line 347 of file GU_SDF.h.

bool GU_SDF::load ( UT_IStream & is )

void GU_SDF::loadFinishedCellNeighboursFIMPartial	(	UT_Array< UT_Array< UT_Vector3I >> &	list,
		UT_Array< bool > &	tileoccupied,
		const UT_JobInfo &	info
	)

protected

void GU_SDF::propagateQueue ( fpreal maxdist )

protected

Propagate distances from all elements in the queue until maximum distance is reached.

void GU_SDF::rasterize ( const GEO_Primitive * prim )

protected

Rasterizers...

void GU_SDF::rasterizePoly ( const GEO_PrimPoly * poly )

protected

void GU_SDF::rasterizeRawTri	(	UT_Vector3	p1,
		UT_Vector3	p2,
		UT_Vector3	p3
	)

protected

This takes coordinates in cell space.

void GU_SDF::removeSolvableLabelsFIMPartial	(	const UT_Array< UT_Vector3I > &	activelist,
		const UT_JobInfo &	info
	)

protected

void GU_SDF::save ( std::ostream & os ) const

Load and save this SDF. This occurs in binary format.

void GU_SDF::sendRays	(	const GU_Detail *	gdp,
		bool	laserscan,
		bool	usemetafield,
		fpreal	tol
	)

protected

This sends rays along all the major axes. The cell distances are set to the distance along the axes to surfaces.

void GU_SDF::setCellDist	(	int	x,
		int	y,
		int	z,
		fpreal	dist,
		fpreal	maxdist = `-1.0`
	)

protected

This sets the given cell to a specific SDF value. This will be considered a finalized value, so it will be written to the output voxel array, any QElem will be deleted, and any neighbouring cells will get tentative values. Propagation to neighbouring cells only occurs if dist < maxdist, unless maxdist < 0

void GU_SDF::setCellTentative	(	int	x,
		int	y,
		int	z,
		fpreal	tentative
	)

protected

Sets a tentative value to a given cell.

void GU_SDF::setInverted ( bool invert )

inline

Definition at line 477 of file GU_SDF.h.

void GU_SDF::setOffset ( fpreal offset )

inline

Definition at line 486 of file GU_SDF.h.

void GU_SDF::setOrig ( const UT_Vector3 & o )

void GU_SDF::setSize ( const UT_Vector3 & s )

void GU_SDF::solveEikonalIterationFIMPartial	(	UT_VoxelArrayF &	dst,
		UT_Array< UT_Array< UT_Vector3I >> &	newlist,
		UT_Array< bool > &	tileoccupied,
		const UT_VoxelArrayF &	olddst,
		const UT_Array< UT_Vector3I > &	activelist,
		const fpreal	maxdist,
		const fpreal	tolerance,
		const UT_JobInfo &	info
	)

protected

GU_SDF::THREADED_METHOD1	(	GU_SDF	,
		activelist.	entries(),
		100	,
		assignSolvableLabelsFIM	,
		const UT_Array< UT_Vector3I > &	,
		activelist
	)

protected

GU_SDF::THREADED_METHOD1	(	GU_SDF	,
		activelist.	entries(),
		100	,
		removeSolvableLabelsFIM	,
		const UT_Array< UT_Vector3I > &	,
		activelist
	)

protected

GU_SDF::THREADED_METHOD2	(	GU_SDF	,
		myQueueIndices->	numTiles(),
		20	,
		loadFinishedCellNeighboursFIM	,
		UT_Array< UT_Array< UT_Vector3I >> &	,
		newlist	,
		UT_Array< bool > &	,
		tileoccupied
	)

protected

GU_SDF::THREADED_METHOD2	(	GU_SDF	,
		myVoxels->	numTiles(),
		16	,
		copyVolumeSamples	,
		const GU_Detail *	,
		gdp	,
		const UT_ValArray< const GEO_Primitive * > &	,
		volumes
	)

protected

GU_SDF::THREADED_METHOD3	(	GU_SDF	,
		occupied.	entries(),
		100	,
		uncompressActiveTilesFIM	,
		UT_VoxelArrayF &	,
		olddst	,
		UT_VoxelArrayF &	,
		dst	,
		const UT_Array< bool > &	,
		occupied
	)

protected

GU_SDF::THREADED_METHOD5	(	GU_SDF	,
		src.	numTiles(),
		20	,
		computeAndLabelZeroCrossingsFIM	,
		UT_VoxelArrayF &	,
		dst	,
		UT_VoxelArrayF &	,
		olddst	,
		const UT_VoxelArrayF &	,
		src	,
		const fpreal	,
		isocontour	,
		const fpreal	,
		maxdist
	)

protected

GU_SDF::THREADED_METHOD5	(	GU_SDF	,
		src.	numTiles(),
		20	,
		buildVolumeZeroCrossings	,
		UT_Array< UT_Array< UT_Vector3I >> &	,
		crossingindices	,
		UT_Array< UT_Array< fpreal >> &	,
		crossingdists	,
		const UT_VoxelArrayF &	,
		src	,
		const fpreal	,
		isocontour	,
		const fpreal	,
		maxdist
	)

protected

GU_SDF::THREADED_METHOD7	(	GU_SDF	,
		activelist.	entries(),
		100	,
		solveEikonalIterationFIM	,
		UT_VoxelArrayF &	,
		dst	,
		UT_Array< UT_Array< UT_Vector3I >> &	,
		newlist	,
		UT_Array< bool > &	,
		tileoccupied	,
		const UT_VoxelArrayF &	,
		olddst	,
		const UT_Array< UT_Vector3I > &	,
		activelist	,
		const fpreal	,
		maxdist	,
		const fpreal	,
		tolerance
	)

protected

void GU_SDF::uncompressActiveTilesFIMPartial	(	UT_VoxelArrayF &	olddst,
		UT_VoxelArrayF &	dst,
		const UT_Array< bool > &	occupied,
		const UT_JobInfo &	info
	)

protected

void GU_SDF::updateQElem ( gu_sdf_qelem * qelem )

protected

If you change the weight of the qelem, this will update the queue.

Member Data Documentation

int GU_SDF::myHeightAxis

protected

Definition at line 713 of file GU_SDF.h.

GEO_PrimVolumeXform GU_SDF::myHeightXform

protected

Definition at line 712 of file GU_SDF.h.

UT_Vector3 GU_SDF::myImplicitNormal

protected

Definition at line 700 of file GU_SDF.h.

sdfImplicitType GU_SDF::myImplicitType

protected

What sort of implicit representation we are using. SDF_EXPLICIT if we have none.

Definition at line 698 of file GU_SDF.h.

bool GU_SDF::myInvert

protected

This flags whether we act as if our SDF had the opposite sign than it does.

Definition at line 704 of file GU_SDF.h.

fpreal GU_SDF::myOffset

protected

This defines how far we should shift the zero isosurface of the SDF.

Definition at line 706 of file GU_SDF.h.

UT_Vector3 GU_SDF::myOrig

protected

Real world coordinates are transformed into the voxel array's 0-1 space by subtracting myOrig and dividing by mySize.

Definition at line 710 of file GU_SDF.h.

gu_sdf_queue* GU_SDF::myQueue

protected

Definition at line 726 of file GU_SDF.h.

UT_ValArray<gu_sdf_qelem *> GU_SDF::myQueueElements

protected

Definition at line 724 of file GU_SDF.h.

UT_IntArray GU_SDF::myQueueFreeList

protected

Definition at line 725 of file GU_SDF.h.

UT_VoxelArray<int>* GU_SDF::myQueueIndices

protected

These are used in the building stage to rasterize to, and in the expansion stage as the priority queues.

Definition at line 723 of file GU_SDF.h.

UT_Vector3 GU_SDF::mySize

protected

Definition at line 710 of file GU_SDF.h.

fpreal GU_SDF::myVoxelDiameter

protected

This caches the diameter of a voxel cell. Ie, myVoxelSize.length()

Definition at line 719 of file GU_SDF.h.

UT_VoxelArrayF* GU_SDF::myVoxels

protected

This is the actual explicit array of voxels. It is not present if the SDF array is implicit. It does not incorporate the offset or inversion.

Definition at line 694 of file GU_SDF.h.

UT_Vector3 GU_SDF::myVoxelSize

protected

This stores the size of a voxel along each axis.

Definition at line 716 of file GU_SDF.h.

The documentation for this class was generated from the following file:

GU/GU_SDF.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation