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# vtkQuad Class Reference

`#include <vtkQuad.h>`

Inheritance diagram for vtkQuad:

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Collaboration diagram for vtkQuad:

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List of all members.

## Detailed Description

a cell that represents a 2D quadrilateral

Date:
  2002/12/26 18:24:22

Revision:
  1.63

vtkQuad is a concrete implementation of vtkCell to represent a 2D quadrilateral. vtkQuad is defined by the four points (0,1,2,3) in counterclockwise order. vtkQuad uses the standard isoparametric interpolation functions for a linear quadrilateral.

Created by:
  - Schroeder, Will

CVS contributions (if > 5%):
  - Schroeder, Will (59%)
  - Miller, Jim (9%)
  - Geveci, Berk (9%)
  - Lorensen, Bill (8%)
  - Martin, Ken (5%)

CVS logs (CVSweb):
  - .`cxx` (`/Common/vtkQuad.cxx)`
  - .`h` (`/Common/vtkQuad.h)`

Examples:
  vtkQuad (Examples)

Tests:
  vtkQuad (Tests)

Definition at line 55 of file vtkQuad.h.

## Public Types

typedef vtkCell | Superclass

## Public Methods

virtual const char * | GetClassName ()
virtual int | IsA (const char *type)
int | GetCellType ()
int | GetCellDimension ()
int | GetNumberOfEdges ()
int | GetNumberOfFaces ()
vtkCell * | GetEdge (int edgeId)
vtkCell * | GetFace (int)
int | CellBoundary (int subId, float pcoords[3], vtkIdList *pts)
void | Contour (float value, vtkDataArray *cellScalars, vtkPointLocator *locator, vtkCellArray *verts, vtkCellArray *lines, vtkCellArray *polys, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd)
int | EvaluatePosition (float x[3], float *closestPoint, int &subId, float pcoords[3], float &dist2, float *weights)
void | EvaluateLocation (int &subId, float pcoords[3], float x[3], float *weights)
int | IntersectWithLine (float p1[3], float p2[3], float tol, float &t, float x[3], float pcoords[3], int &subId)
int | Triangulate (int index, vtkIdList *ptIds, vtkPoints *pts)
void | Derivatives (int subId, float pcoords[3], float *values, int dim, float *derivs)
void | Clip (float value, vtkDataArray *cellScalars, vtkPointLocator *locator, vtkCellArray *polys, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd, int insideOut)

## Static Public Methods

vtkQuad * | New ()
int | IsTypeOf (const char *type)
vtkQuad * | SafeDownCast (vtkObject *o)
void | InterpolationFunctions (float pcoords[3], float sf[4])
void | InterpolationDerivs (float pcoords[3], float derivs[8])

## Protected Methods

| vtkQuad ()
| ~vtkQuad ()

## Protected Attributes

vtkLine * | Line

## Member Typedef Documentation

typedef vtkCell vtkQuad::Superclass

| Reimplemented from vtkCell. Definition at line 59 of file vtkQuad.h.

## Constructor & Destructor Documentation

vtkQuad::vtkQuad | ( |  | ) | `[protected]`

vtkQuad::~vtkQuad | ( |  | ) | `[protected]`

## Member Function Documentation

vtkQuad* vtkQuad::New | ( |  | ) | `[static]`

| Create an object with Debug turned off, modified time initialized to zero, and reference counting on. Reimplemented from vtkObject.

virtual const char* vtkQuad::GetClassName | ( |  | ) | `[virtual]`

| Reimplemented from vtkCell.

int vtkQuad::IsTypeOf | ( | const char * | type | ) | `[static]`

| 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 vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkCell.

virtual int vtkQuad::IsA | ( | const char * | type | ) | `[virtual]`

| 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 vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkCell.

vtkQuad* vtkQuad::SafeDownCast | ( | vtkObject * | o | ) | `[static]`

| Reimplemented from vtkCell.

int vtkQuad::GetCellType | ( |  | ) | `[inline, virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 63 of file vtkQuad.h. References VTK_QUAD.

int vtkQuad::GetCellDimension | ( |  | ) | `[inline, virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 64 of file vtkQuad.h.

int vtkQuad::GetNumberOfEdges | ( |  | ) | `[inline, virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 65 of file vtkQuad.h.

int vtkQuad::GetNumberOfFaces | ( |  | ) | `[inline, virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 66 of file vtkQuad.h.

vtkCell* vtkQuad::GetEdge | ( | int | edgeId | ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

vtkCell* vtkQuad::GetFace | ( | int |  | ) | `[inline, virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 68 of file vtkQuad.h.

int vtkQuad::CellBoundary | ( | int | subId,
|  | float | pcoords[3],
|  | vtkIdList * | pts
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

void vtkQuad::Contour | ( | float | value,
|  | vtkDataArray * | cellScalars,
|  | vtkPointLocator * | locator,
|  | vtkCellArray * | verts,
|  | vtkCellArray * | lines,
|  | vtkCellArray * | polys,
|  | vtkPointData * | inPd,
|  | vtkPointData * | outPd,
|  | vtkCellData * | inCd,
|  | vtkIdType | cellId,
|  | vtkCellData * | outCd
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

int vtkQuad::EvaluatePosition | ( | float | x[3],
|  | float * | closestPoint,
|  | int & | subId,
|  | float | pcoords[3],
|  | float & | dist2,
|  | float * | weights
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

void vtkQuad::EvaluateLocation | ( | int & | subId,
|  | float | pcoords[3],
|  | float | x[3],
|  | float * | weights
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

int vtkQuad::IntersectWithLine | ( | float | p1[3],
|  | float | p2[3],
|  | float | tol,
|  | float & | t,
|  | float | x[3],
|  | float | pcoords[3],
|  | int & | subId
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

int vtkQuad::Triangulate | ( | int | index,
|  | vtkIdList * | ptIds,
|  | vtkPoints * | pts
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

void vtkQuad::Derivatives | ( | int | subId,
|  | float | pcoords[3],
|  | float * | values,
|  | int | dim,
|  | float * | derivs
| ) | `[virtual]`

| See the vtkCell API for descriptions of these methods. Implements vtkCell.

void vtkQuad::Clip | ( | float | value,
|  | vtkDataArray * | cellScalars,
|  | vtkPointLocator * | locator,
|  | vtkCellArray * | polys,
|  | vtkPointData * | inPd,
|  | vtkPointData * | outPd,
|  | vtkCellData * | inCd,
|  | vtkIdType | cellId,
|  | vtkCellData * | outCd,
|  | int | insideOut
| ) | `[virtual]`

| Clip this quad using scalar value provided. Like contouring, except that it cuts the quad to produce other quads and/or triangles. Implements vtkCell.

void vtkQuad::InterpolationFunctions | ( | float | pcoords[3],
|  | float | sf[4]
| ) | `[static]`

| vtkQuad specific methods.

void vtkQuad::InterpolationDerivs | ( | float | pcoords[3],
|  | float | derivs[8]
| ) | `[static]`

| vtkQuad specific methods.

## Member Data Documentation

vtkLine* vtkQuad::Line`[protected]`

| Definition at line 108 of file vtkQuad.h.

The documentation for this class was generated from the following file:

- Common/vtkQuad.h