selectively filter points
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#include <vtkMaskPoints.h>
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virtual vtkObjectBase * | NewInstanceInternal () const |
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| vtkMaskPoints () |
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| ~vtkMaskPoints () |
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virtual int | RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) |
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virtual int | FillInputPortInformation (int port, vtkInformation *info) |
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virtual void | InternalScatter (unsigned long *, unsigned long *, int, int) |
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virtual void | InternalGather (unsigned long *, unsigned long *, int, int) |
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virtual int | InternalGetNumberOfProcesses () |
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virtual int | InternalGetLocalProcessId () |
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virtual void | InternalBarrier () |
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unsigned long | GetLocalSampleSize (vtkIdType, int) |
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selectively filter points
vtkMaskPoints is a filter that passes through points and point attributes from input dataset. (Other geometry is not passed through.) It is possible to mask every nth point, and to specify an initial offset to begin masking from. It is possible to also generate different random selections (jittered strides, real random samples, and spatially stratified random samples) from the input data. The filter can also generate vertices (topological primitives) as well as points. This is useful because vertices are rendered while points are not.
- Examples:
- vtkMaskPoints (Examples)
- Tests:
- vtkMaskPoints (Tests)
Definition at line 42 of file vtkMaskPoints.h.
vtkMaskPoints::vtkMaskPoints |
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vtkMaskPoints::~vtkMaskPoints |
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static int vtkMaskPoints::IsTypeOf |
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const char * |
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virtual int vtkMaskPoints::IsA |
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const char * |
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static vtkMaskPoints* vtkMaskPoints::SafeDownCast |
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vtkObjectBase * |
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virtual vtkObjectBase* vtkMaskPoints::NewInstanceInternal |
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void vtkMaskPoints::PrintSelf |
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ostream & |
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vtkIndent |
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virtual void vtkMaskPoints::SetOnRatio |
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int |
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Turn on every nth point (strided sampling), ignored by random modes.
virtual int vtkMaskPoints::GetOnRatio |
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Turn on every nth point (strided sampling), ignored by random modes.
virtual void vtkMaskPoints::SetMaximumNumberOfPoints |
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vtkIdType |
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Limit the number of points that can be passed through (i.e., sets the output sample size).
virtual vtkIdType vtkMaskPoints::GetMaximumNumberOfPoints |
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Limit the number of points that can be passed through (i.e., sets the output sample size).
virtual void vtkMaskPoints::SetOffset |
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vtkIdType |
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Start sampling with this point. Ignored by certain random modes.
virtual vtkIdType vtkMaskPoints::GetOffset |
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Start sampling with this point. Ignored by certain random modes.
virtual void vtkMaskPoints::SetRandomMode |
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int |
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Special flag causes randomization of point selection.
virtual int vtkMaskPoints::GetRandomMode |
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Special flag causes randomization of point selection.
virtual void vtkMaskPoints::RandomModeOn |
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Special flag causes randomization of point selection.
virtual void vtkMaskPoints::RandomModeOff |
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Special flag causes randomization of point selection.
virtual void vtkMaskPoints::SetRandomModeType |
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int |
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Special mode selector that switches between random mode types. 0 - randomized strides: randomly strides through the data (default); fairly certain that this is not a statistically random sample because the output depends on the order of the input and the input points do not have an equal chance to appear in the output (plus Vitter's incremental random algorithms are more complex than this, while not a proof it is good indication this isn't a statistically random sample
- the closest would be algorithm S) 1 - random sample: create a statistically random sample using Vitter's incremental algorithm D without A described in Vitter "Faster Mthods for Random Sampling", Communications of the ACM Volume 27, Issue 7, 1984 (OnRatio and Offset are ignored) O(sample size) 2 - spatially stratified random sample: create a spatially stratified random sample using the first method described in Woodring et al. "In-situ Sampling of a Large-Scale Particle Simulation for Interactive Visualization and Analysis", Computer Graphics Forum, 2011 (EuroVis 2011). (OnRatio and Offset are ignored) O(N log N)
virtual int vtkMaskPoints::GetRandomModeType |
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Special mode selector that switches between random mode types. 0 - randomized strides: randomly strides through the data (default); fairly certain that this is not a statistically random sample because the output depends on the order of the input and the input points do not have an equal chance to appear in the output (plus Vitter's incremental random algorithms are more complex than this, while not a proof it is good indication this isn't a statistically random sample
- the closest would be algorithm S) 1 - random sample: create a statistically random sample using Vitter's incremental algorithm D without A described in Vitter "Faster Mthods for Random Sampling", Communications of the ACM Volume 27, Issue 7, 1984 (OnRatio and Offset are ignored) O(sample size) 2 - spatially stratified random sample: create a spatially stratified random sample using the first method described in Woodring et al. "In-situ Sampling of a Large-Scale Particle Simulation for Interactive Visualization and Analysis", Computer Graphics Forum, 2011 (EuroVis 2011). (OnRatio and Offset are ignored) O(N log N)
virtual void vtkMaskPoints::SetProportionalMaximumNumberOfPoints |
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int |
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THIS ONLY WORKS WITH THE PARALLEL IMPLEMENTATION vtkPMaskPoints RUNNING IN PARALLEL. NOTHING WILL CHANGE IF THIS IS NOT THE PARALLEL vtkPMaskPoints. Determines whether maximum number of points is taken per processor (default) or if the maximum number of points is proportionally taken across processors (i.e., number of points per processor = points on a processor * maximum number of points / total points across all processors). In the first case, the total number of points = maximum number of points * number of processors. In the second case, the total number of points = maximum number of points.
virtual int vtkMaskPoints::GetProportionalMaximumNumberOfPoints |
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THIS ONLY WORKS WITH THE PARALLEL IMPLEMENTATION vtkPMaskPoints RUNNING IN PARALLEL. NOTHING WILL CHANGE IF THIS IS NOT THE PARALLEL vtkPMaskPoints. Determines whether maximum number of points is taken per processor (default) or if the maximum number of points is proportionally taken across processors (i.e., number of points per processor = points on a processor * maximum number of points / total points across all processors). In the first case, the total number of points = maximum number of points * number of processors. In the second case, the total number of points = maximum number of points.
virtual void vtkMaskPoints::ProportionalMaximumNumberOfPointsOn |
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THIS ONLY WORKS WITH THE PARALLEL IMPLEMENTATION vtkPMaskPoints RUNNING IN PARALLEL. NOTHING WILL CHANGE IF THIS IS NOT THE PARALLEL vtkPMaskPoints. Determines whether maximum number of points is taken per processor (default) or if the maximum number of points is proportionally taken across processors (i.e., number of points per processor = points on a processor * maximum number of points / total points across all processors). In the first case, the total number of points = maximum number of points * number of processors. In the second case, the total number of points = maximum number of points.
virtual void vtkMaskPoints::ProportionalMaximumNumberOfPointsOff |
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THIS ONLY WORKS WITH THE PARALLEL IMPLEMENTATION vtkPMaskPoints RUNNING IN PARALLEL. NOTHING WILL CHANGE IF THIS IS NOT THE PARALLEL vtkPMaskPoints. Determines whether maximum number of points is taken per processor (default) or if the maximum number of points is proportionally taken across processors (i.e., number of points per processor = points on a processor * maximum number of points / total points across all processors). In the first case, the total number of points = maximum number of points * number of processors. In the second case, the total number of points = maximum number of points.
virtual void vtkMaskPoints::SetGenerateVertices |
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int |
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Generate output polydata vertices as well as points. A useful convenience method because vertices are drawn (they are topology) while points are not (they are geometry). By default this method is off.
virtual int vtkMaskPoints::GetGenerateVertices |
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Generate output polydata vertices as well as points. A useful convenience method because vertices are drawn (they are topology) while points are not (they are geometry). By default this method is off.
virtual void vtkMaskPoints::GenerateVerticesOn |
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Generate output polydata vertices as well as points. A useful convenience method because vertices are drawn (they are topology) while points are not (they are geometry). By default this method is off.
virtual void vtkMaskPoints::GenerateVerticesOff |
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Generate output polydata vertices as well as points. A useful convenience method because vertices are drawn (they are topology) while points are not (they are geometry). By default this method is off.
virtual void vtkMaskPoints::SetSingleVertexPerCell |
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int |
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When vertex generation is enabled, by default vertices are produced as multi-vertex cells (more than one per cell), if you wish to have a single vertex per cell, enable this flag.
virtual int vtkMaskPoints::GetSingleVertexPerCell |
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When vertex generation is enabled, by default vertices are produced as multi-vertex cells (more than one per cell), if you wish to have a single vertex per cell, enable this flag.
virtual void vtkMaskPoints::SingleVertexPerCellOn |
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When vertex generation is enabled, by default vertices are produced as multi-vertex cells (more than one per cell), if you wish to have a single vertex per cell, enable this flag.
virtual void vtkMaskPoints::SingleVertexPerCellOff |
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When vertex generation is enabled, by default vertices are produced as multi-vertex cells (more than one per cell), if you wish to have a single vertex per cell, enable this flag.
virtual int vtkMaskPoints::RequestData |
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vtkInformation * |
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vtkInformationVector ** |
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vtkInformationVector * |
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virtual int vtkMaskPoints::FillInputPortInformation |
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int |
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vtkInformation * |
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virtual void vtkMaskPoints::InternalScatter |
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unsigned long * |
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unsigned long * |
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virtual void vtkMaskPoints::InternalGather |
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unsigned long * |
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unsigned long * |
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virtual int vtkMaskPoints::InternalGetNumberOfProcesses |
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virtual int vtkMaskPoints::InternalGetLocalProcessId |
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virtual void vtkMaskPoints::InternalBarrier |
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unsigned long vtkMaskPoints::GetLocalSampleSize |
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vtkIdType |
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int vtkMaskPoints::OnRatio |
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vtkIdType vtkMaskPoints::Offset |
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int vtkMaskPoints::RandomMode |
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vtkIdType vtkMaskPoints::MaximumNumberOfPoints |
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int vtkMaskPoints::GenerateVertices |
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int vtkMaskPoints::SingleVertexPerCell |
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int vtkMaskPoints::RandomModeType |
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int vtkMaskPoints::ProportionalMaximumNumberOfPoints |
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The documentation for this class was generated from the following file: