Package com.openinventor.meshvizxlm.extractors.cell

Class MxQuadrangleCellExtract

java.lang.Object

com.openinventor.meshvizxlm.extractors.cell.MxGenericCellExtract

com.openinventor.meshvizxlm.extractors.cell.MxCellExtract

com.openinventor.meshvizxlm.extractors.cell.MxQuadrangleCellExtract

public class MxQuadrangleCellExtract
extends MxCellExtract

Utility class for quadrangle cells.

Utility class that provides a static implementation of MiSurfaceCell 's methods for a quadrangle cell. This class is provided to make easier the creation of a class that implements the MiSurfaceCell interface for a quadrangle cell.

Localization test
See isPointInsideCell(MiGeometryI, MiSurfaceCell, double[], double[])

The following image shows the node numbering and the face numbering used by this class.

Nodes and faces numbering

Method Summary

Modifier and Type	Method	Description
static double	getLongestEdgeLength(MiGeometryI meshGeometry, MiSurfaceCell cell)	Gets the longest edge of a quadrangle cell.
static boolean	isPointInsideCell(MiGeometryI meshGeometry, MiSurfaceCell cell, double[] point, double[] weights)	Checks if a point is inside or outside a quadrangle cell.

Methods inherited from class com.openinventor.meshvizxlm.extractors.cell.MxCellExtract

getCenter

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getLongestEdgeLength

public static double getLongestEdgeLength(MiGeometryI meshGeometry,
 MiSurfaceCell cell)

Gets the longest edge of a quadrangle cell.

Parameters:

meshGeometry - the geometry of the mesh

cell - the input cell

Returns:

the longest edge of the specified cell

isPointInsideCell

public static boolean isPointInsideCell(MiGeometryI meshGeometry,
 MiSurfaceCell cell,
 double[] point,
 double[] weights)

Checks if a point is inside or outside a quadrangle cell.

This static method helps to implement the method MiCell.isPointInsideCell(MiGeometryI, double[], double[]) for a quadrangle cell.

Parameters:

meshGeometry - the geometry of the mesh

cell - the input cell.

point - the input point given in the same space coordinate as meshGeometry

weights - the array into which the weight values are to be stored. This method computes the 4 values weights[0-3] if the point is inside the cell. It assumes the weights array has been already allocated. Its size must be set to 4 (at least) before calling this method

Returns:

true if the point is inside the cell