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vtkHyperStreamline Class Reference
generate hyperstreamline in arbitrary dataset.
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#include <vtkHyperStreamline.h>
Inheritance diagram for vtkHyperStreamline:
[legend]Collaboration diagram for vtkHyperStreamline:
[legend]List of all members.
Public Methods |
| virtual const char * | GetClassName () |
| virtual int | IsA (const char *type) |
| void | PrintSelf (ostream &os, vtkIndent indent) |
| void | SetStartLocation (vtkIdType cellId, int subId, float pcoords[3]) |
| vtkIdType | GetStartLocation (int &subId, float pcoords[3]) |
| void | SetStartPosition (float x[3]) |
| void | SetStartPosition (float x, float y, float z) |
| float * | GetStartPosition () |
| void | IntegrateMajorEigenvector () |
| void | IntegrateMediumEigenvector () |
| void | IntegrateMinorEigenvector () |
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| void | SetStartLocation (vtkIdType cellId, int subId, float r, float s, float t) |
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| virtual void | SetMaximumPropagationDistance (float) |
| virtual float | GetMaximumPropagationDistance () |
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| virtual void | SetIntegrationStepLength (float) |
| virtual float | GetIntegrationStepLength () |
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| virtual void | SetStepLength (float) |
| virtual float | GetStepLength () |
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| virtual void | SetIntegrationDirection (int) |
| virtual int | GetIntegrationDirection () |
| void | SetIntegrationDirectionToForward () |
| void | SetIntegrationDirectionToBackward () |
| void | SetIntegrationDirectionToIntegrateBothDirections () |
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| virtual void | SetTerminalEigenvalue (float) |
| virtual float | GetTerminalEigenvalue () |
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| virtual void | SetNumberOfSides (int) |
| virtual int | GetNumberOfSides () |
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| virtual void | SetRadius (float) |
| virtual float | GetRadius () |
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| virtual void | SetLogScaling (int) |
| virtual int | GetLogScaling () |
| virtual void | LogScalingOn () |
| virtual void | LogScalingOff () |
Static Public Methods |
| int | IsTypeOf (const char *type) |
| vtkHyperStreamline * | SafeDownCast (vtkObject *o) |
| vtkHyperStreamline * | New () |
Protected Methods |
| | vtkHyperStreamline () |
| | ~vtkHyperStreamline () |
| void | Execute () |
| void | BuildTube () |
Protected Attributes |
| int | StartFrom |
| vtkIdType | StartCell |
| int | StartSubId |
| float | StartPCoords [3] |
| float | StartPosition [3] |
| vtkHyperArray * | Streamers |
| int | NumberOfStreamers |
| float | MaximumPropagationDistance |
| int | IntegrationDirection |
| float | IntegrationStepLength |
| float | StepLength |
| float | TerminalEigenvalue |
| int | NumberOfSides |
| float | Radius |
| int | LogScaling |
| int | IntegrationEigenvector |
Detailed Description
generate hyperstreamline in arbitrary dataset.
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Date:
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2001/10/11 13:37:06
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Revision:
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1.39
vtkHyperStreamline is a filter that integrates through a tensor field to generate a hyperstreamline. The integration is along the maximum eigenvector and the cross section of the hyperstreamline is defined by the two other eigenvectors. Thus the shape of the hyperstreamline is "tube-like", with the cross section being elliptical. Hyperstreamlines are used to visualize tensor fields.
The starting point of a hyperstreamline can be defined in one of two ways. First, you may specify an initial position. This is a x-y-z global coordinate. The second option is to specify a starting location. This is cellId, subId, and cell parametric coordinates.
The integration of the hyperstreamline occurs through the major eigenvector field. IntegrationStepLength controls the step length within each cell (i.e., this is the fraction of the cell length). The length of the hyperstreamline is controlled by MaximumPropagationDistance. This parameter is the length of the hyperstreamline in units of distance. The tube itself is composed of many small sub-tubes - NumberOfSides controls the number of sides in the tube, and StepLength controls the length of the sub-tubes.
Because hyperstreamlines are often created near regions of singularities, it is possible to control the scaling of the tube cross section by using a logarithmic scale. Use LogScalingOn to turn this capability on. The Radius value controls the initial radius of the tube.
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See also:
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vtkTensorGlyph vtkStreamer
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Tests:
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vtkHyperStreamline (Tests)
Definition at line 89 of file vtkHyperStreamline.h.
Constructor & Destructor Documentation
| vtkHyperStreamline::vtkHyperStreamline |
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| vtkHyperStreamline::~vtkHyperStreamline |
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Member Function Documentation
| virtual const char* vtkHyperStreamline::GetClassName |
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[virtual] |
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| int vtkHyperStreamline::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 vtkDataSetToPolyDataFilter. |
| virtual int vtkHyperStreamline::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 vtkDataSetToPolyDataFilter. |
| vtkHyperStreamline* vtkHyperStreamline::SafeDownCast |
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vtkObject * |
o |
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[static] |
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| void vtkHyperStreamline::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. |
| vtkHyperStreamline* vtkHyperStreamline::New |
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[static] |
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Construct object with initial starting position (0,0,0); integration step length 0.2; step length 0.01; forward integration; terminal eigenvalue 0.0; number of sides 6; radius 0.5; and logarithmic scaling off.
Reimplemented from vtkPolyDataSource. |
| void vtkHyperStreamline::SetStartLocation |
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vtkIdType |
cellId, |
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int |
subId, |
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float |
pcoords[3] |
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Specify the start of the hyperstreamline in the cell coordinate system. That is, cellId and subId (if composite cell), and parametric coordinates. |
| void vtkHyperStreamline::SetStartLocation |
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vtkIdType |
cellId, |
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int |
subId, |
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float |
r, |
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float |
s, |
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float |
t |
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Specify the start of the hyperstreamline in the cell coordinate system. That is, cellId and subId (if composite cell), and parametric coordinates. |
| vtkIdType vtkHyperStreamline::GetStartLocation |
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int & |
subId, |
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float |
pcoords[3] |
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Get the starting location of the hyperstreamline in the cell coordinate system. Returns the cell that the starting point is in. |
| void vtkHyperStreamline::SetStartPosition |
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float |
x[3] |
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Specify the start of the hyperstreamline in the global coordinate system. Starting from position implies that a search must be performed to find initial cell to start integration from. |
| void vtkHyperStreamline::SetStartPosition |
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float |
x, |
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float |
y, |
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float |
z |
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Specify the start of the hyperstreamline in the global coordinate system. Starting from position implies that a search must be performed to find initial cell to start integration from. |
| float* vtkHyperStreamline::GetStartPosition |
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Get the start position of the hyperstreamline in global x-y-z coordinates. |
| virtual void vtkHyperStreamline::SetMaximumPropagationDistance |
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float |
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[virtual] |
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Set / get the maximum length of the hyperstreamline expressed as absolute distance (i.e., arc length) value. |
| virtual float vtkHyperStreamline::GetMaximumPropagationDistance |
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Set / get the maximum length of the hyperstreamline expressed as absolute distance (i.e., arc length) value. |
| void vtkHyperStreamline::IntegrateMajorEigenvector |
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Use the major eigenvector field as the vector field through which to integrate. The major eigenvector is the eigenvector whose corresponding eigenvalue is closest to positive infinity. |
| void vtkHyperStreamline::IntegrateMediumEigenvector |
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Use the major eigenvector field as the vector field through which to integrate. The major eigenvector is the eigenvector whose corresponding eigenvalue is between the major and minor eigenvalues. |
| void vtkHyperStreamline::IntegrateMinorEigenvector |
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Use the major eigenvector field as the vector field through which to integrate. The major eigenvector is the eigenvector whose corresponding eigenvalue is closest to negative infinity. |
| virtual void vtkHyperStreamline::SetIntegrationStepLength |
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float |
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[virtual] |
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Set / get a nominal integration step size (expressed as a fraction of the size of each cell). |
| virtual float vtkHyperStreamline::GetIntegrationStepLength |
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Set / get a nominal integration step size (expressed as a fraction of the size of each cell). |
| virtual void vtkHyperStreamline::SetStepLength |
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float |
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Set / get the length of a tube segment composing the hyperstreamline. The length is specified as a fraction of the diagonal length of the input bounding box. |
| virtual float vtkHyperStreamline::GetStepLength |
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Set / get the length of a tube segment composing the hyperstreamline. The length is specified as a fraction of the diagonal length of the input bounding box. |
| virtual void vtkHyperStreamline::SetIntegrationDirection |
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int |
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[virtual] |
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Specify the direction in which to integrate the hyperstreamline. |
| virtual int vtkHyperStreamline::GetIntegrationDirection |
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Specify the direction in which to integrate the hyperstreamline. |
| void vtkHyperStreamline::SetIntegrationDirectionToForward |
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Specify the direction in which to integrate the hyperstreamline.
Definition at line 174 of file vtkHyperStreamline.h. |
| void vtkHyperStreamline::SetIntegrationDirectionToBackward |
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Specify the direction in which to integrate the hyperstreamline.
Definition at line 176 of file vtkHyperStreamline.h. |
| void vtkHyperStreamline::SetIntegrationDirectionToIntegrateBothDirections |
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[inline] |
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Specify the direction in which to integrate the hyperstreamline.
Definition at line 178 of file vtkHyperStreamline.h. |
| virtual void vtkHyperStreamline::SetTerminalEigenvalue |
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float |
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[virtual] |
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Set/get terminal eigenvalue. If major eigenvalue falls below this value, hyperstreamline terminates propagation. |
| virtual float vtkHyperStreamline::GetTerminalEigenvalue |
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Set/get terminal eigenvalue. If major eigenvalue falls below this value, hyperstreamline terminates propagation. |
| virtual void vtkHyperStreamline::SetNumberOfSides |
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int |
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[virtual] |
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Set / get the number of sides for the hyperstreamlines. At a minimum, number of sides is 3. |
| virtual int vtkHyperStreamline::GetNumberOfSides |
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Set / get the number of sides for the hyperstreamlines. At a minimum, number of sides is 3. |
| virtual void vtkHyperStreamline::SetRadius |
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float |
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Set / get the initial tube radius. This is the maximum "elliptical" radius at the beginning of the tube. Radius varies based on ratio of eigenvalues. Note that tube section is actually elliptical and may become a point or line in cross section in some cases. |
| virtual float vtkHyperStreamline::GetRadius |
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Set / get the initial tube radius. This is the maximum "elliptical" radius at the beginning of the tube. Radius varies based on ratio of eigenvalues. Note that tube section is actually elliptical and may become a point or line in cross section in some cases. |
| virtual void vtkHyperStreamline::SetLogScaling |
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int |
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[virtual] |
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Turn on/off logarithmic scaling. If scaling is on, the log base 10 of the computed eigenvalues are used to scale the cross section radii. |
| virtual int vtkHyperStreamline::GetLogScaling |
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Turn on/off logarithmic scaling. If scaling is on, the log base 10 of the computed eigenvalues are used to scale the cross section radii. |
| virtual void vtkHyperStreamline::LogScalingOn |
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Turn on/off logarithmic scaling. If scaling is on, the log base 10 of the computed eigenvalues are used to scale the cross section radii. |
| virtual void vtkHyperStreamline::LogScalingOff |
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[virtual] |
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Turn on/off logarithmic scaling. If scaling is on, the log base 10 of the computed eigenvalues are used to scale the cross section radii. |
| void vtkHyperStreamline::Execute |
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This method is the old style execute method
Reimplemented from vtkSource. |
| void vtkHyperStreamline::BuildTube |
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Member Data Documentation
int vtkHyperStreamline::StartFrom [protected]
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vtkIdType vtkHyperStreamline::StartCell [protected]
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int vtkHyperStreamline::StartSubId [protected]
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float vtkHyperStreamline::StartPCoords[3] [protected]
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float vtkHyperStreamline::StartPosition[3] [protected]
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vtkHyperArray* vtkHyperStreamline::Streamers [protected]
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int vtkHyperStreamline::NumberOfStreamers [protected]
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float vtkHyperStreamline::MaximumPropagationDistance [protected]
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int vtkHyperStreamline::IntegrationDirection [protected]
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float vtkHyperStreamline::IntegrationStepLength [protected]
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float vtkHyperStreamline::StepLength [protected]
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float vtkHyperStreamline::TerminalEigenvalue [protected]
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int vtkHyperStreamline::NumberOfSides [protected]
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float vtkHyperStreamline::Radius [protected]
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int vtkHyperStreamline::LogScaling [protected]
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int vtkHyperStreamline::IntegrationEigenvector [protected]
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The documentation for this class was generated from the following file:
Generated on Thu Mar 28 14:29:54 2002 for VTK by
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001