Objects that compute geometry-based error during cell tessellation according to some max angle. More...
#include <vtkSmoothErrorMetric.h>
Public Member Functions | |
| double | GetAngleTolerance () |
| void | SetAngleTolerance (double value) |
| int | RequiresEdgeSubdivision (double *leftPoint, double *midPoint, double *rightPoint, double alpha) |
| double | GetError (double *leftPoint, double *midPoint, double *rightPoint, double alpha) |
Static Public Member Functions | |
| static vtkSmoothErrorMetric * | New () |
Protected Member Functions | |
| vtkSmoothErrorMetric () | |
| virtual | ~vtkSmoothErrorMetric () |
Protected Attributes | |
| double | AngleTolerance |
| double | CosTolerance |
| typedef vtkGenericSubdivisionErrorMetric | Superclass |
| static int | IsTypeOf (const char *type) |
| static vtkSmoothErrorMetric * | SafeDownCast (vtkObjectBase *o) |
| virtual int | IsA (const char *type) |
| vtkSmoothErrorMetric * | NewInstance () const |
| void | PrintSelf (ostream &os, vtkIndent indent) |
| virtual vtkObjectBase * | NewInstanceInternal () const |
Detailed Description
Objects that compute geometry-based error during cell tessellation according to some max angle.
It is a concrete error metric, based on a geometric criterium: a max angle between the chord passing through the midpoint and one of the endpoints and the other chord passing through the midpoint and the other endpoint of the edge. It is related to the flatness of an edge.
Definition at line 41 of file vtkSmoothErrorMetric.h.
Member Typedef Documentation
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
Definition at line 50 of file vtkSmoothErrorMetric.h.
Constructor & Destructor Documentation
| vtkSmoothErrorMetric::vtkSmoothErrorMetric | ( | ) | [protected] |
| virtual vtkSmoothErrorMetric::~vtkSmoothErrorMetric | ( | ) | [protected, virtual] |
Member Function Documentation
| static vtkSmoothErrorMetric* vtkSmoothErrorMetric::New | ( | ) | [static] |
Construct the error metric with a default flatness threshold of 90.1 degrees.
Reimplemented from vtkObject.
| static int vtkSmoothErrorMetric::IsTypeOf | ( | const char * | type | ) | [static] |
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
| virtual int vtkSmoothErrorMetric::IsA | ( | const char * | type | ) | [virtual] |
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
| static vtkSmoothErrorMetric* vtkSmoothErrorMetric::SafeDownCast | ( | vtkObjectBase * | o | ) | [static] |
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
| virtual vtkObjectBase* vtkSmoothErrorMetric::NewInstanceInternal | ( | ) | const [protected, virtual] |
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
| void vtkSmoothErrorMetric::PrintSelf | ( | ostream & | os, |
| vtkIndent | indent | ||
| ) | [virtual] |
Standard VTK type and error macros.
Reimplemented from vtkGenericSubdivisionErrorMetric.
Return the flatness threshold.
- Postcondition:
- positive_result: result>90 && result<180
| void vtkSmoothErrorMetric::SetAngleTolerance | ( | double | value | ) |
Set the flatness threshold with an angle in degrees. Internally compute the cosine. value is supposed to be in ]90,180[, if not it is clamped in [90.1,179.9]. For instance 178 will give better result than 150.
| int vtkSmoothErrorMetric::RequiresEdgeSubdivision | ( | double * | leftPoint, |
| double * | midPoint, | ||
| double * | rightPoint, | ||
| double | alpha | ||
| ) | [virtual] |
Does the edge need to be subdivided according to the cosine between the two chords passing through the mid-point and the endpoints? The edge is defined by its `leftPoint' and its `rightPoint'. `leftPoint', `midPoint' and `rightPoint' have to be initialized before calling RequiresEdgeSubdivision(). Their format is global coordinates, parametric coordinates and point centered attributes: xyx rst abc de... `alpha' is the normalized abscissa of the midpoint along the edge. (close to 0 means close to the left point, close to 1 means close to the right point)
- Precondition:
- leftPoint_exists: leftPoint!=0
- midPoint_exists: midPoint!=0
- rightPoint_exists: rightPoint!=0
- clamped_alpha: alpha>0 && alpha<1
- valid_size: sizeof(leftPoint)=sizeof(midPoint)=sizeof(rightPoint) =GetAttributeCollection()->GetNumberOfPointCenteredComponents()+6
Implements vtkGenericSubdivisionErrorMetric.
| double vtkSmoothErrorMetric::GetError | ( | double * | leftPoint, |
| double * | midPoint, | ||
| double * | rightPoint, | ||
| double | alpha | ||
| ) | [virtual] |
Return the error at the mid-point. It will return an error relative to the bounding box size if GetRelative() is true, a square absolute error otherwise. See RequiresEdgeSubdivision() for a description of the arguments.
- Precondition:
- leftPoint_exists: leftPoint!=0
- midPoint_exists: midPoint!=0
- rightPoint_exists: rightPoint!=0
- clamped_alpha: alpha>0 && alpha<1
- valid_size: sizeof(leftPoint)=sizeof(midPoint)=sizeof(rightPoint) =GetAttributeCollection()->GetNumberOfPointCenteredComponents()+6
- Postcondition:
- positive_result: result>=0
Implements vtkGenericSubdivisionErrorMetric.
Member Data Documentation
double vtkSmoothErrorMetric::AngleTolerance [protected] |
Definition at line 100 of file vtkSmoothErrorMetric.h.
double vtkSmoothErrorMetric::CosTolerance [protected] |
Definition at line 101 of file vtkSmoothErrorMetric.h.
The documentation for this class was generated from the following file:
- dox/Common/DataModel/vtkSmoothErrorMetric.h
