vtkHexahedron Class Reference
#include <vtkHexahedron.h>
Inheritance diagram for vtkHexahedron:
Detailed Description
a cell that represents a linear 3D hexahedron
- Date:
- 2002/12/26 18:24:21
- Revision:
- 1.65
vtkHexahedron is a concrete implementation of vtkCell to represent a linear, 3D rectangular hexahedron (e.g., "brick" topology). vtkHexahedron uses the standard isoparametric shape functions for a linear hexahedron. The hexahedron is defined by the eight points (0-7) where (0,1,2,3) is the base of the hexahedron which, using the right hand rule, forms a quadrilaterial whose normal points in the direction of the opposite face (4,5,6,7).
- Created by:
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- Schroeder, Will
- CVS contributions (if > 5%):
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- Schroeder, Will (68%)
- Miller, Jim (6%)
- Geveci, Berk (6%)
- Law, Charles (5%)
- Examples:
- vtkHexahedron (Examples)
- Tests:
- vtkHexahedron (Tests)
Definition at line 58 of file vtkHexahedron.h.
Public Types | |
| typedef vtkCell3D | Superclass |
Public Methods | |
| virtual const char * | GetClassName () |
| virtual int | IsA (const char *type) |
| 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 | JacobianInverse (float pcoords[3], double **inverse, float derivs[24]) |
| virtual void | GetEdgePoints (int edgeId, int *&pts) |
| virtual void | GetFacePoints (int faceId, int *&pts) |
| virtual float * | GetParametricCoords () |
| int | GetCellType () |
| int | GetNumberOfEdges () |
| int | GetNumberOfFaces () |
| vtkCell * | GetEdge (int edgeId) |
| vtkCell * | GetFace (int faceId) |
| 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) |
Static Public Methods | |
| vtkHexahedron * | New () |
| int | IsTypeOf (const char *type) |
| vtkHexahedron * | SafeDownCast (vtkObject *o) |
| void | InterpolationFunctions (float pcoords[3], float weights[8]) |
| void | InterpolationDerivs (float pcoords[3], float derivs[24]) |
| int * | GetEdgeArray (int edgeId) |
| int * | GetFaceArray (int faceId) |
Protected Methods | |
| vtkHexahedron () | |
| ~vtkHexahedron () | |
Protected Attributes | |
| vtkLine * | Line |
| vtkQuad * | Quad |
Member Typedef Documentation
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Reimplemented from vtkCell3D. Definition at line 62 of file vtkHexahedron.h. |
Constructor & Destructor Documentation
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Member Function Documentation
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Create an object with Debug turned off, modified time initialized to zero, and reference counting on. Reimplemented from vtkObject. |
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Reimplemented from vtkCell3D. |
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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 vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkCell3D. |
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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 vtkTypeRevisionMacro found in vtkSetGet.h. Reimplemented from vtkCell3D. |
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Reimplemented from vtkCell3D. |
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See vtkCell3D API for description of these methods. Implements vtkCell3D. |
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See vtkCell3D API for description of these methods. Implements vtkCell3D. |
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See vtkCell3D API for description of these methods. Reimplemented from vtkCell3D. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 73 of file vtkHexahedron.h. References VTK_HEXAHEDRON. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 74 of file vtkHexahedron.h. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. Definition at line 75 of file vtkHexahedron.h. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. |
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See the vtkCell API for descriptions of these methods. Implements vtkCell. |
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Given a point x[3] return inside(=1) or outside(=0) cell; evaluate parametric coordinates, sub-cell id (!=0 only if cell is composite), distance squared of point x[3] to cell (in particular, the sub-cell indicated), closest point on cell to x[3] (unless closestPoint is null, in which case, the closest point and dist2 are not found), and interpolation weights in cell. (The number of weights is equal to the number of points defining the cell). Note: on rare occasions a -1 is returned from the method. This means that numerical error has occurred and all data returned from this method should be ignored. Also, inside/outside is determine parametrically. That is, a point is inside if it satisfies parametric limits. This can cause problems for cells of topological dimension 2 or less, since a point in 3D can project onto the cell within parametric limits but be "far" from the cell. Thus the value dist2 may be checked to determine true in/out. Implements vtkCell. |
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Determine global coordinate (x[3]) from subId and parametric coordinates. Also returns interpolation weights. (The number of weights is equal to the number of points in the cell.) Implements vtkCell. |
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Intersect with a ray. Return parametric coordinates (both line and cell) and global intersection coordinates, given ray definition and tolerance. The method returns non-zero value if intersection occurs. Implements vtkCell. |
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Generate simplices of proper dimension. If cell is 3D, tetrahedron are generated; if 2D triangles; if 1D lines; if 0D points. The form of the output is a sequence of points, each n+1 points (where n is topological cell dimension) defining a simplex. The index is a parameter that controls which triangulation to use (if more than one is possible). If numerical degeneracy encountered, 0 is returned, otherwise 1 is returned. Implements vtkCell. |
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Compute derivatives given cell subId and parametric coordinates. The values array is a series of data value(s) at the cell points. There is a one-to-one correspondence between cell point and data value(s). Dim is the number of data values per cell point. Derivs are derivatives in the x-y-z coordinate directions for each data value. Thus, if computing derivatives for a scalar function in a hexahedron, dim=1, 8 values are supplied, and 3 deriv values are returned (i.e., derivatives in x-y-z directions). On the other hand, if computing derivatives of velocity (vx,vy,vz) dim=3, 24 values are supplied ((vx,vy,vz)1, (vx,vy,vz)2, ....()8), and 9 deriv values are returned ((d(vx)/dx),(d(vx)/dy),(d(vx)/dz), (d(vy)/dx),(d(vy)/dy), (d(vy)/dz), (d(vz)/dx),(d(vz)/dy),(d(vz)/dz)). Implements vtkCell. |
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Hexahedron specific |
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Hexahedron specific |
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Hexahedron specific |
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Hexahedron specific |
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Given parametric coordinates compute inverse Jacobian transformation matrix. Returns 9 elements of 3x3 inverse Jacobian plus interpolation function derivatives. |
Member Data Documentation
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Definition at line 114 of file vtkHexahedron.h. |
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Definition at line 115 of file vtkHexahedron.h. |
The documentation for this class was generated from the following file:
- Common/vtkHexahedron.h