<td>Parallel to (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=paralleldirselector#cadfile.cadutils.cadquery.ParallelDirSelector">ParallelDirSelector</a>). Can return multiple objects.</td>
<td>Perpendicular to (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=perpendiculardirselector#cadfile.cadutils.cadquery.PerpendicularDirSelector">PerpendicularDirSelector</a>)</td>
<td>Positive direction (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=directionselector#cadfile.cadutils.cadquery.DirectionSelector">DirectionSelector</a>)</td>
<td>Negative direction (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=directionselector#cadfile.cadutils.cadquery.DirectionSelector">DirectionSelector</a>)</td>
<td>Maximize (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=directionminmaxselector#cadfile.cadutils.cadquery.DirectionMinMaxSelector">DirectionMinMaxSelector</a> with directionMax=True)</td>
</tr>
<tr>
<td><</td>
<td>Minimize (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=directionminmaxselector#cadfile.cadutils.cadquery.DirectionMinMaxSelector">DirectionMinMaxSelector</a> with directionMax=False)</td>
</tr>
<tr>
<td>%</td>
<td>Curve/surface type (same as <ahref="http://parametricparts.com/docs/classreference.html?highlight=typeselector#cadfile.cadutils.cadquery.TypeSelector">TypeSelector</a>)</td>
</tr>
</table>
</div>
<divclass="section">
<h2>Examples of Filtering Faces</h2><br/>
All types of filters work on faces. In most cases, the selector refers to the direction of the normal vector of the face.
If a face is not planar, selectors are evaluated at the center of mass of the face. This can lead to results that are quite unexpected.
<tablestyle="width:100%;">
<tr>
<thstyle="width:10%;">Selector</th>
<thstyle="width:40%;">Selector Class</th>
<thstyle="width:40%;">Selects</th>
<thstyle="width:10%;"># Objects Returned</th>
</tr>
<tr>
<td>+Z</td>
<td>DirectionSelector</td>
<td>Faces with normal in +z direction</td>
<td>0 or 1</td>
</tr>
<tr>
<td>|Z</td>
<td>ParallelDirSelector</td>
<td>Faces parallel to xy plane</td>
<td>0..many</td>
</tr>
<tr>
<td>-X</td>
<td>DirectionSelector</td>
<td>Faces with normal in neg x direction</td>
<td>0..many</td>
</tr>
<tr>
<td>#Z</td>
<td>PerpendicularDirSelector</td>
<td>Faces perpendicular to z direction</td>
<td>0..many</td>
</tr>
<tr>
<td>%Plane</td>
<td>TypeSelector</td>
<td>Faces of type plane</td>
<td>0..many</td>
</tr>
<tr>
<td>>Y</td>
<td>DirectionMinMaxSelector</td>
<td>Face farthest in the positive y dir</td>
<td>0 or 1</td>
</tr>
<tr>
<td><Y</td>
<td>DirectionMinMaxSelector</td>
<td>Face farthest in the negative y dir</td>
<td>0 or 1</td>
</tr>
</table>
</div>
<divclass="section">
<h2>Examples of Filtering Edges</h2><br/>
Some filter types are not supported for edges. The selector usually refers to the direction of the edge.
Non-linear edges are not selected for any selectors except type (%). Non-linear edges are never returned when these filters are applied.
<tablestyle="width:100%;">
<tr>
<thstyle="width:10%;">Selector</th>
<thstyle="width:40%;">Selector Class</th>
<thstyle="width:40%;">Selects</th>
<thstyle="width:10%;"># Objects Returned</th>
</tr>
<tr>
<td>+Z</td>
<td>DirectionSelector</td>
<td>Edges aligned in the Z direction</td>
<td>0..many</td>
</tr>
<tr>
<td>|Z</td>
<td>ParallelDirSelector</td>
<td>Edges parallel to z direction</td>
<td>0..many</td>
</tr>
<tr>
<td>-X</td>
<td>DirectionSelector</td>
<td>Edges aligned in neg x direction</td>
<td>0..many</td>
</tr>
<tr>
<td>#Z</td>
<td>PerpendicularDirSelector</td>
<td>Edges perpendicular to z direction</td>
<td>0..many</td>
</tr>
<tr>
<td>%Plane</td>
<td>TypeSelector</td>
<td>Edges type line</td>
<td>0..many</td>
</tr>
<tr>
<td>>Y</td>
<td>DirectionMinMaxSelector</td>
<td>Edges farthest in the positive y dir</td>
<td>0 or 1</td>
</tr>
<tr>
<td><Y</td>
<td>DirectionMinMaxSelector</td>
<td>Edges farthest in the negative y dir</td>
<td>0 or 1</td>
</tr>
</table>
</div>
<divclass="section">
<h2>Examples of Filtering Vertices</h2><br/>
Only a few of the filter types apply to vertices. The location of the vertex is the subject of the filter.
