#include <vtkThreshold.h>
Inheritance diagram for vtkThreshold:
Public Methods | |
virtual const char * | GetClassName () |
virtual int | IsA (const char *type) |
void | PrintSelf (ostream &os, vtkIndent indent) |
void | ThresholdByLower (float lower) |
void | ThresholdByUpper (float upper) |
void | ThresholdBetween (float lower, float upper) |
virtual float | GetUpperThreshold () |
virtual float | GetLowerThreshold () |
virtual void | SetAttributeMode (int) |
virtual int | GetAttributeMode () |
void | SetAttributeModeToDefault () |
void | SetAttributeModeToUsePointData () |
void | SetAttributeModeToUseCellData () |
const char * | GetAttributeModeAsString () |
virtual void | SetAllScalars (int) |
virtual int | GetAllScalars () |
virtual void | AllScalarsOn () |
virtual void | AllScalarsOff () |
Static Public Methods | |
vtkThreshold * | New () |
int | IsTypeOf (const char *type) |
vtkThreshold * | SafeDownCast (vtkObject *o) |
Protected Methods | |
vtkThreshold () | |
~vtkThreshold () | |
vtkThreshold (const vtkThreshold &) | |
void | operator= (const vtkThreshold &) |
void | Execute () |
int | Lower (float s) |
int | Upper (float s) |
int | Between (float s) |
Protected Attributes | |
int | AllScalars |
float | LowerThreshold |
float | UpperThreshold |
int | AttributeMode |
int(vtkThreshold::* | ThresholdFunction )(float s) |
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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Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkDataSetToUnstructuredGridFilter. |
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Get the Upper and Lower thresholds. |
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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. |
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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. |
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Instantiate object with no start, end, or progress methods. Reimplemented from vtkUnstructuredGridSource. |
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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. |
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Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkDataSetToUnstructuredGridFilter. |
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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. |
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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). |
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Criterion is cells whose scalars are between lower and upper thresholds. |
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Criterion is cells whose scalars are less or equal to lower threshold. |
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Criterion is cells whose scalars are greater or equal to upper threshold. |