3DSlicer

Slices geometry along a specified plane.

Typical Uses

Slicing solids, surfaces, and other 3D geometry with a plane.

How does it work?

The 3DSlicer accepts features with any geometry type and splits them along a specified 3D plane.

Both 3D and 2D geometries are accepted, including points clouds and aggregates. 2D features are handled as 3D with a Z coordinate of zero (0). Aggregates are treated as single objects.

Output features are identified as being on the front or back side of the slicing plane, and are flagged as having been sliced or not. Front and back are relative to the plane, with front being in the direction of the plane's normal vector and back being the inverse. Features that are entirely coincident with the plane are considered to be on the front side.

The slicing plane is defined by:

Fixed X, Fixed Y, or Fixed Z: Specifying a single axis point in ground units. The normal vector of the plane (determining front and back) is in the positive direction along the fixed axis.
Point and Normal: Specifying a single 3D point on the slicing plane and another point defining the direction of the normal vector from that point.

Plane Type	Orientation
Fixed X
Fixed Y
Fixed Z
Point and Normal Variable orientation

Usage Notes

Only 3D plane geometry may be used to slice.

Configuration

Input Ports

Output Ports

Parameters

General

Plane Type

Select a plane definition mode:

Fixed X: Supply an X coordinate only.
Fixed Y: Supply a Y coordinate only.
Fixed Z (default): Supply a Z coordinate only.
Point and Normal: Describe a plane with a 3D point and normal vector coordinate pair.

Fixed Value

When Plane Type is Fixed X, Fixed Y, or Fixed Z, specify the plane position along the selected axis in ground units.

Custom Plane

When Plane Type is Point and Normal, specify the following coordinates:

Point on Plane	Supply X, Y, and Z coordinates of a point on the plane.
Normal Vector of Plane	Supply X, Y, and Z coordinates of a point on the normal vector, relative to the Point on Plane.

Output Attribute Names

Plane Side Indicator

Name the attribute to contain the sidedness of the output geometry relative to the slicing plane.

Possible values are:

front
back

Sliced Indicator

Name the attribute to contain the slicing status of output geometry.

Possible values are:

yes: The geometry was sliced by the plane.
no: The geometry was not sliced by the plane.

Editing Transformer Parameters

Transformer parameters can be set by directly entering values, using expressions, or referencing other elements in the workspace such as attribute values or user parameters. Various editors and context menus are available to assist. To see what is available, click beside the applicable parameter.

How to Set Parameter Values

Defining Values

There are several ways to define a value for use in a Transformer. The simplest is to simply type in a value or string, which can include functions of various types such as attribute references, math and string functions, and workspace parameters.

Using the Text Editor

The Text Editor provides a convenient way to construct text strings (including regular expressions) from various data sources, such as attributes, parameters, and constants, where the result is used directly inside a parameter.

Text Editor

Using the Arithmetic Editor

The Arithmetic Editor provides a convenient way to construct math expressions from various data sources, such as attributes, parameters, and feature functions, where the result is used directly inside a parameter.

Arithmetic Editor

Conditional Values

Set values depending on one or more test conditions that either pass or fail.

Parameter Condition Definition Dialog

Content

Expressions and strings can include a number of functions, characters, parameters, and more.

When setting values - whether entered directly in a parameter or constructed using one of the editors - strings and expressions containing String, Math, Date/Time or FME Feature Functions will have those functions evaluated. Therefore, the names of these functions (in the form @<function_name>) should not be used as literal string values.

Content Types

String Functions	These functions manipulate and format strings.
Special Characters	A set of control characters is available in the Text Editor.
Math Functions	Math functions are available in both editors.
Date/Time Functions	Date and time functions are available in the Text Editor.
Math Operators	These operators are available in the Arithmetic Editor.
FME Feature Functions	These return primarily feature-specific values.
FME Parameters	FME and workspace-specific parameters may be used.
Creating and Modifying User Parameters	Create your own editable parameters.

Dialog Options - Tables

Table Tools

Transformers with table-style parameters have additional tools for populating and manipulating values.

Row Reordering

Enabled once you have clicked on a row item. Choices include:

Add a row
Remove a row
Move current row up one
Move current row down one
Move current row to top
Move current row to bottom

Cut, Copy, and Paste

Enabled once you have clicked on a row item. Choices include:

Cut a row - delete and copy to clipboard
Copy a row to the clipboard
Paste a row from the clipboard

Cut, copy, and paste may be used within a transformer, or between transformers.

Filter

Start typing a string, and the matrix will only display rows matching those characters. Searches all columns. This only affects the display of attributes within the transformer - it does not alter which attributes are output.

Import

Import populates the table with a set of new attributes read from a dataset. Specific application varies between transformers.

Reset/Refresh

Generally resets the table to its initial state, and may provide additional options to remove invalid entries. Behavior varies between transformers.

Note: Not all tools are available in all transformers.

For more information, see Transformer Parameter Menu Options.

Reference

Processing Behavior	Feature-Based
Feature Holding	No
Dependencies	None
Aliases
History

FME Community

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Examples may contain information licensed under the Open Government Licence – Vancouver, Open Government Licence - British Columbia, and/or Open Government Licence – Canada.