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vtkThreshold Class Reference
extracts cells where scalar value in cell satisfies threshold criterion.
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#include <vtkThreshold.h>
Inheritance diagram for vtkThreshold:
[legend]Collaboration diagram for vtkThreshold:
[legend]List of all members.
Detailed Description
extracts cells where scalar value in cell satisfies threshold criterion.
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Date:
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2000/12/10 20:08:55
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Revision:
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1.35
vtkThreshold is a filter that extracts cells from any dataset type that satisfy a threshold criterion. A cell satisfies the criterion if the scalar value of (every or any) point satisfies the criterion. The criterion can take three forms: 1) greater than a particular value; 2) less than a particular value; or 3) between two values. The output of this filter is an unstructured grid.
Note that scalar values are available from the point and cell attribute data. By default, point data is used to obtain scalars, but you can control this behavior. See the AttributeMode ivar below.
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See also:
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vtkThresholdPoints vtkThresholdTextureCoords
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Examples:
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vtkThreshold (examples)
Definition at line 72 of file vtkThreshold.h.
Constructor & Destructor Documentation
| vtkThreshold::vtkThreshold |
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[protected] |
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| vtkThreshold::~vtkThreshold |
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[inline, protected] |
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| vtkThreshold::vtkThreshold |
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const vtkThreshold & |
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[inline, protected] |
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Member Function Documentation
| vtkThreshold* vtkThreshold::New |
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| virtual const char* vtkThreshold::GetClassName |
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| int vtkThreshold::IsTypeOf |
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const char * |
type |
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[static] |
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Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkDataSetToUnstructuredGridFilter. |
| virtual int vtkThreshold::IsA |
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const char * |
type |
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[virtual] |
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkDataSetToUnstructuredGridFilter. |
| vtkThreshold* vtkThreshold::SafeDownCast |
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vtkObject * |
o |
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[static] |
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| void vtkThreshold::PrintSelf |
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ostream & |
os, |
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vtkIndent |
indent |
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[virtual] |
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from vtkSource. |
| void vtkThreshold::ThresholdByLower |
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float |
lower |
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Criterion is cells whose scalars are less or equal to lower threshold. |
| void vtkThreshold::ThresholdByUpper |
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float |
upper |
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Criterion is cells whose scalars are greater or equal to upper threshold. |
| void vtkThreshold::ThresholdBetween |
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float |
lower, |
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float |
upper |
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Criterion is cells whose scalars are between lower and upper thresholds. |
| virtual float vtkThreshold::GetUpperThreshold |
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[virtual] |
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Get the Upper and Lower thresholds. |
| virtual float vtkThreshold::GetLowerThreshold |
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[virtual] |
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| virtual void vtkThreshold::SetAttributeMode |
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int |
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[virtual] |
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Control how the filter works with scalar point data and cell attribute data. By default (AttributeModeToDefault), the filter will use point data, and if no point data is available, then cell data is used. Alternatively you can explicitly set the filter to use point data (AttributeModeToUsePointData) or cell data (AttributeModeToUseCellData). |
| virtual int vtkThreshold::GetAttributeMode |
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[virtual] |
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| void vtkThreshold::SetAttributeModeToDefault |
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[inline] |
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| void vtkThreshold::SetAttributeModeToUsePointData |
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[inline] |
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| void vtkThreshold::SetAttributeModeToUseCellData |
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[inline] |
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| const char* vtkThreshold::GetAttributeModeAsString |
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| virtual void vtkThreshold::SetAllScalars |
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int |
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[virtual] |
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If using scalars from point data, all scalars for all points in a cell must satisfy the threshold criterion if AllScalars is set. Otherwise, just a single scalar value satisfying the threshold criterion enables will extract the cell. |
| virtual int vtkThreshold::GetAllScalars |
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| virtual void vtkThreshold::AllScalarsOn |
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[virtual] |
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| virtual void vtkThreshold::AllScalarsOff |
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[virtual] |
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| void vtkThreshold::operator= |
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const vtkThreshold & |
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[inline, protected] |
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| void vtkThreshold::Execute |
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[protected, virtual] |
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| int vtkThreshold::Lower |
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float |
s |
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[inline, protected] |
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| int vtkThreshold::Upper |
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float |
s |
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[inline, protected] |
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| int vtkThreshold::Between |
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float |
s |
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[inline, protected] |
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Member Data Documentation
int vtkThreshold::AllScalars [protected]
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float vtkThreshold::LowerThreshold [protected]
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float vtkThreshold::UpperThreshold [protected]
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int vtkThreshold::AttributeMode [protected]
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int(vtkThreshold::* vtkThreshold::ThresholdFunction)(float s) [protected]
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The documentation for this class was generated from the following file:
Generated on Wed Nov 21 13:00:51 2001 for VTK by
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001