Class MeshScalarSamplingGrid

Sample a scalar function on a discrete grid. Can sample full grid, or compute values around a specific iso-contour and then fill in rest of grid with correctly-signed values via fast sweeping (this is the default)

TODO:

• I think we are over-exploring the grid most of the time. eg along an x-ray that intersects the surface, we only need at most 2 cells, but we are computing at least 3, and possibly 5.
• it may be better to use something like bloomenthal polygonizer continuation? where we are keeping track of active edges instead of active cells?

Inheritance

Object

MeshScalarSamplingGrid

Inherited Members

Object.ToString()

Object.Equals(Object)

Object.Equals(Object, Object)

Object.ReferenceEquals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Namespace: gs

Assembly: cs.temp.dll.dll

Syntax

public class MeshScalarSamplingGrid

Constructors

MeshScalarSamplingGrid(DMesh3, Double, Func<Vector3d, Double>)

Declaration

public MeshScalarSamplingGrid(DMesh3 mesh, double cellSize, Func<Vector3d, double> scalarF)

Parameters

Type	Name	Description
DMesh3	mesh
Double	cellSize
Func<Vector3d, Double>	scalarF

Fields

BufferCells

Declaration

public int BufferCells

Field Value

Type	Description
Int32

CancelF

if this function returns true, we should abort calculation

Declaration

public Func<bool> CancelF

Field Value

Type	Description
Func<Boolean>

CellSize

Declaration

public double CellSize

Field Value

Type	Description
Double

ComputeMode

Declaration

public MeshScalarSamplingGrid.ComputeModes ComputeMode

Field Value

Type	Description
MeshScalarSamplingGrid.ComputeModes

DebugPrint

Declaration

public bool DebugPrint

Field Value

Type	Description
Boolean

IsoValue

Declaration

public float IsoValue

Field Value

Type	Description
Single

Mesh

Declaration

public DMesh3 Mesh

Field Value

Type	Description
DMesh3

ScalarF

Declaration

public Func<Vector3d, double> ScalarF

Field Value

Type	Description
Func<Vector3d, Double>

WantMeshSDFGrid

Declaration

public bool WantMeshSDFGrid

Field Value

Type	Description
Boolean

Properties

Dimensions

Declaration

public Vector3i Dimensions { get; }

Property Value

Type	Description
Vector3i

Grid

scalar-values grid available after calling Compute()

Declaration

public DenseGrid3f Grid { get; }

Property Value

Type	Description
DenseGrid3f

GridOrigin

Origin of the grid, in same coordinates as mesh

Declaration

public Vector3f GridOrigin { get; }

Property Value

Type	Description
Vector3f

Item[Int32, Int32, Int32]

Declaration

public float this[int i, int j, int k] { get; }

Parameters

Type	Name	Description
Int32	i
Int32	j
Int32	k

Property Value

Type	Description
Single

SDFGrid

If ComputeMode==NarrowBand, then we internally compute a signed-distance grid, which will hang onto

Declaration

public MeshSignedDistanceGrid SDFGrid { get; }

Property Value

Type	Description
MeshSignedDistanceGrid

Methods

CellCenter(Int32, Int32, Int32)

Declaration

public Vector3f CellCenter(int i, int j, int k)

Parameters

Type	Name	Description
Int32	i
Int32	j
Int32	k

Returns

Type	Description
Vector3f

Compute()

Declaration

public void Compute()