Reduces the number of triangles in a mesh.
Storing and processing large meshes can be expensive. In some cases a simpler representation of the mesh can be just as useful, and more efficient.
Meshes that are output will be smaller to store and easier to process.
The simplification process used by this transformer avoids merging triangles whose appearances differ (for example, by differing textures or colors).
Configuration
Input Ports
Input
Features that contain meshes. The meshes are not required to be triangular.
Output Ports
Simplified
Features that contain simplified meshes. The output meshes will have been triangulated.
<Rejected>
Features with invalid geometries will be rejected and output via this port.
Rejected Feature Handling: can be set to either terminate the translation or continue running when it encounters a rejected feature. This setting is available both as a default FME option and as a workspace parameter.
Parameters
Parameters
| Mode |
The simplification process will continue until it cannot simplify further, or until the requirements for the mode have been met. The mode can be Absolute, and continue until finished, or until the number of triangles is below an absolute value (specified by Max Triangles). Alternatively, the mode can be Relative, and continue until finished, or the ratio of triangles after simplification to triangles before simplification is below a set value (specified by Simplification Amount). |
| Max Triangles |
Only used in Absolute mode, this specifies the threshold of triangles remaining that will stop the simplification process. This value must be at least 1. |
| Simplification Amount |
Only used in Relative mode, this specifies a ratio of triangles remaining to original number of triangles that will stop the simplification process. This value must be between 0 and 1, exclusive. For example, a value of 0.25 will try to output a mesh with one quarter of the number of triangles. |
Editing Transformer Parameters
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click 
beside the applicable parameter. For more information, see Transformer Parameter Menu Options.
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. There are a number of tools and shortcuts that can assist in constructing values, generally available from the drop-down context menu adjacent to the value field.
How to Set Parameter Values
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.
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.
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 - whether entered directly in a parameter or constructed using one of the editors.
Content Types
| These functions manipulate and format strings. | |
| A set of control characters is available in the Text Editor. | |
| Math functions are available in both editors. | |
| These operators are available in the Arithmetic Editor. | |
| These return primarily feature-specific values. | |
| FME and workspace-specific parameters may be used. | |
| Working with User Parameters | Create your own editable parameters. |
Reference
|
Processing Behavior |
|
|
Feature Holding |
No |
| Dependencies | Not supported on 32-bit Windows |
| FME Licensing Level | FME Professional Edition and above |
| Aliases | |
| History | Released in FME 2018.0 |
| Categories |
FME Knowledge Center
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Examples may contain information licensed under the Open Government Licence – Vancouver