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The plugin settings can be accessed from the Project Settings window.
Octree
Setting |
Description |
---|---|
Duplicate Handling |
Determines how to handle duplicate points (distance < 0.0001). Ignore: Keeps any duplicates found. Select First: Keeps the first point and skips any further duplicates. Select Brighter: Selects the brightest of the duplicates |
Max Bucket Size |
Maximum number of unallocated points to keep inside the node before they need to be converted into a full child node. Lower values will provide finer LOD control at the expense of system RAM and CPU time. |
Node Grid Resolution |
Virtual grid resolution to divide the node into. Lower values will provide finer LOD control at the expense of system RAM and CPU time. |
Performance
Setting |
Description |
---|---|
Use Multithreading |
Enable to allow usage of multiple threads during import and processing. |
Multithreading Insertion Batch Size |
Determines the maximum number of points to process in a single batch when using multi-threading. |
Use Async Import |
Enable to allow the editor to import the point clouds in the background, without blocking the main thread. |
Max Import Buffer Size |
Determines the maximum size of the buffer to use during importing. |
Export Batch Size |
Determines the maximum size of the buffer to use during exporting. |
Collision
Setting |
Description |
---|---|
Meshing Batch Size |
Determines the size of per-thread data for the meshing algorithm. |
Import
Setting |
Description |
---|---|
Auto Center On Import |
Automatically centers the cloud on import..Caution: Preserving original coordinates may cause noticeable precision loss, if the values are too large. Should you experience point 'banding' effect, please re-import your cloud with centering enabled. |
Enable 8-Bit LAS Detection |
Determines the maximum size of the buffer to use during importing. |
Max Number Of Points To Scan (LAS) |
Determines the maximum number of points to scan when analyzing the LAS data. |
Max Number Of Points To Scan (ASCII) |
Determines the maximum number of points to scan when analyzing the ASCII data. |
Debug
Setting |
Description |
---|---|
Use IO Caching |
Enabling this will store pre-processed version of the import data as a *.tmp file, and will attempt to use it upon re-import. This is useful for faster debug iteration on large and slow to import (especially ASCII based) cloud assets. |
Details Panel
The appearance of Point Clouds is defined by the Actor and modified from the Details Panel.
Setting |
Description |
---|---|
Point Cloud |
Point Clouds Actors refer to Point Cloud Assets, in a similar way as Static Mesh Actors and Static Mesh Assets. |
Lighting |
Point Clouds can cast or receive shadows, useful for sun studies |
Appearance |
You can grow or shrink the size of the points, display them as circles or squares etc. |
Color Adjustment |
Color correction, similar to the post process volume that lets you adjust the appearance of the points further. |
Lidar Point Cloud Console Variables
Command |
Default Value |
Description |
---|---|---|
r.LidarBaseLODImportance |
0.1 |
Defines the importance of tiles in the rendering budget depending on the distance from camera. |
r.LidarPointBudget |
1000000 |
Defines the global point rendering budget of the viewports. This value represents the total number of points displayed on screen at the same time. |
r.LidarScreenCenterImportance |
0 |
Defines the importance of tiles in the rendering budget based on where the camera is looking. A higher value will force lower LODs on the sides of the camera frustrum. |
stat lidarpointcloud |
Shows the statistics of the currently rendered Point Cloud data. |
Supported FIle Formats
Commonly used file formats to store point cloud data are supported by the Unreal Engine.
Extension |
Description |
---|---|
.XYZ, .PTS, *.TXT |
Those formats can be considered as part of a more general type of file formats: ASCII point cloud , containing points coordinates, (X Y Z for each point - as meters) or coordinates plus colors, (X Y Z R G B for each point). Notation can be float (0.00892855) or scientific (8.92855E-03) |
.LAS |
The LAS file format is a public file format for the interchange of 3-dimensional point cloud data data between data users. Although developed primarily for exchange of lidar point cloud data, this format supports the exchange of any 3-dimensional x,y,z tuplet. This binary file format is an alternative to proprietary systems or a generic ASCII file interchange system used by many companies. |