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vtkMarchingSquares Class Reference
generate isoline(s) from structured points set.
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#include <vtkMarchingSquares.h>
Inheritance diagram for vtkMarchingSquares:
[legend]Collaboration diagram for vtkMarchingSquares:
[legend]List of all members.
Public Methods |
| virtual const char * | GetClassName () |
| virtual int | IsA (const char *type) |
| void | PrintSelf (ostream &os, vtkIndent indent) |
| void | SetValue (int i, float value) |
| void | GetValues (float *contourValues) |
| void | SetNumberOfContours (int number) |
| unsigned long int | GetMTime () |
| void | SetLocator (vtkPointLocator *locator) |
| virtual vtkPointLocator * | GetLocator () |
| void | CreateDefaultLocator () |
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| void | SetInput (vtkImageData *input) |
| vtkImageData * | GetInput () |
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| virtual void | SetImageRange (int data[]) |
| virtual int * | GetImageRange () |
| virtual void | GetImageRange (int data[6]) |
| void | SetImageRange (int imin, int imax, int jmin, int jmax, int kmin, int kmax) |
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| float | GetValue (int i) |
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| float * | GetValues () |
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| int | GetNumberOfContours () |
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| void | GenerateValues (int numContours, float range[2]) |
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| void | GenerateValues (int numContours, float rangeStart, float rangeEnd) |
Static Public Methods |
| vtkMarchingSquares * | New () |
| int | IsTypeOf (const char *type) |
| vtkMarchingSquares * | SafeDownCast (vtkObject *o) |
Protected Methods |
| | vtkMarchingSquares () |
| | ~vtkMarchingSquares () |
| void | Execute () |
Protected Attributes |
| vtkContourValues * | ContourValues |
| int | ImageRange [6] |
| vtkPointLocator * | Locator |
Detailed Description
generate isoline(s) from structured points set.
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Date:
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2001/12/17 15:42:38
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Revision:
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1.34.2.1
vtkMarchingSquares is a filter that takes as input a structured points set and generates on output one or more isolines. One or more contour values must be specified to generate the isolines. Alternatively, you can specify a min/max scalar range and the number of contours to generate a series of evenly spaced contour values.
To generate contour lines the input data must be of topological dimension 2 (i.e., an image). If not, you can use the ImageRange ivar to select an image plane from an input volume. This avoids having to extract a plane first (using vtkExtractSubVolume). The filter deals with this by first trying to use the input data directly, and if not a 2D image, then uses the ImageRange ivar to reduce it to an image.
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Warning:
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This filter is specialized to images. If you are interested in contouring other types of data, use the general vtkContourFilter.
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See also:
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vtkContourFilter vtkMarchingCubes vtkSliceCubes vtkDividingCubes
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Tests:
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vtkMarchingSquares (Tests)
Definition at line 91 of file vtkMarchingSquares.h.
Constructor & Destructor Documentation
| vtkMarchingSquares::vtkMarchingSquares |
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[protected] |
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| vtkMarchingSquares::~vtkMarchingSquares |
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[protected] |
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Member Function Documentation
| vtkMarchingSquares* vtkMarchingSquares::New |
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[static] |
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Instantiate object with no start, end, or progress methods.
Reimplemented from vtkPolyDataSource. |
| virtual const char* vtkMarchingSquares::GetClassName |
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[virtual] |
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| int vtkMarchingSquares::IsTypeOf |
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const char * |
type |
) |
[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 vtkPolyDataSource. |
| virtual int vtkMarchingSquares::IsA |
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const char * |
type |
) |
[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 vtkPolyDataSource. |
| vtkMarchingSquares* vtkMarchingSquares::SafeDownCast |
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vtkObject * |
o |
) |
[static] |
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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 vtkPolyDataSource. |
| void vtkMarchingSquares::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. |
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Set / get the input data or filter. |
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Set / get the input data or filter. |
| virtual void vtkMarchingSquares::SetImageRange |
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int |
data[] |
) |
[virtual] |
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Set/Get the i-j-k index range which define a plane on which to generate contour lines. Using this ivar it is possible to input a 3D volume directly and then generate contour lines on one of the i-j-k planes, or a portion of a plane. |
| virtual int* vtkMarchingSquares::GetImageRange |
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[virtual] |
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Set/Get the i-j-k index range which define a plane on which to generate contour lines. Using this ivar it is possible to input a 3D volume directly and then generate contour lines on one of the i-j-k planes, or a portion of a plane. |
| virtual void vtkMarchingSquares::GetImageRange |
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int |
data[6] |
) |
[virtual] |
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Set/Get the i-j-k index range which define a plane on which to generate contour lines. Using this ivar it is possible to input a 3D volume directly and then generate contour lines on one of the i-j-k planes, or a portion of a plane. |
| void vtkMarchingSquares::SetImageRange |
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int |
imin, |
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int |
imax, |
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int |
jmin, |
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int |
jmax, |
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int |
kmin, |
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int |
kmax |
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) |
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Set/Get the i-j-k index range which define a plane on which to generate contour lines. Using this ivar it is possible to input a 3D volume directly and then generate contour lines on one of the i-j-k planes, or a portion of a plane. |
| void vtkMarchingSquares::SetValue |
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int |
i, |
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float |
value |
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[inline] |
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Set a particular contour value at contour number i. The index i ranges between 0<=i<NumberOfContours.
Definition at line 151 of file vtkMarchingSquares.h. |
| float vtkMarchingSquares::GetValue |
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int |
i |
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[inline] |
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| float * vtkMarchingSquares::GetValues |
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[inline] |
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| void vtkMarchingSquares::GetValues |
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float * |
contourValues |
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[inline] |
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| void vtkMarchingSquares::SetNumberOfContours |
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int |
number |
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[inline] |
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Set the number of contours to place into the list. You only really need to use this method to reduce list size. The method SetValue() will automatically increase list size as needed.
Definition at line 176 of file vtkMarchingSquares.h. |
| int vtkMarchingSquares::GetNumberOfContours |
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[inline] |
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| void vtkMarchingSquares::GenerateValues |
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int |
numContours, |
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float |
range[2] |
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) |
[inline] |
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Generate numContours equally spaced contour values between specified range. Contour values will include min/max range values.
Definition at line 188 of file vtkMarchingSquares.h. |
| void vtkMarchingSquares::GenerateValues |
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int |
numContours, |
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float |
rangeStart, |
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float |
rangeEnd |
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) |
[inline] |
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Generate numContours equally spaced contour values between specified range. Contour values will include min/max range values.
Definition at line 195 of file vtkMarchingSquares.h. |
| unsigned long int vtkMarchingSquares::GetMTime |
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[virtual] |
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Return this object's modified time.
Reimplemented from vtkObject. |
| void vtkMarchingSquares::CreateDefaultLocator |
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void |
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Create default locator. Used to create one when none is specified. The locator is used to merge coincident points. |
| void vtkMarchingSquares::Execute |
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[protected, virtual] |
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This method is the old style execute method
Reimplemented from vtkSource. |
Member Data Documentation
int vtkMarchingSquares::ImageRange[6] [protected]
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The documentation for this class was generated from the following file:
Generated on Thu Mar 28 14:35:06 2002 for VTK by
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001