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

All Methods Static Methods Concrete Methods
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 Detail
  - 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