Quickstart

First Steps

Import PointcloudViewer plugin into your Project (from Asset Store window, or from Package Manager in the more recent Unity versions)
From v2.50 forward, you need to enable "[x] Allow Unsafe", from Player Settings (Edit/Project settings/Player..)
Check the scenes in folder "Assets/PointCloudTools/Demos/PointCloudViewer/Scenes/"
For the V3 scenes, you can download sample materials from https://www.dropbox.com/s/em7s0lzum61d774/tilesample.zip?dl=1 (unzip under /Assets/StreamingAssets/.tilesample/ folder)

Open Unity Project
In the Project Window, create new folder like IMPORT/ (*or can be named anything else also, this will contain raw point cloud files, that you want to remove later)
Using Windows Explorer, Drag & Drop your point cloud files into this folder (you can do this inside Unity, or outside Unity by going into that folder)
Example: Import folder in Projects window, with point cloud file dropped in (In Unity)
Example: Import folder in Assets folder, with point cloud file dropped in (viewer in Explorer)
Tips: I'd recommend using some special folder naming, that is ignored from GIT/version control systems, so that your huge point cloud files are not saved to version control_

Select Window/PointCloudTools/Convert PointCloud to Binary (DX11)
Drag&Drop your point cloud file from Project window (for example from your Assets/IMPORT/ folder) into the "Point Cloud source file" field
Example: Drag & Dropping file from Project into converter window
Adjust Converter settings, at least select correct import format from the dropdown menu
*Recommended: Enable "[x] Use V2 .ucpc Format", it is faster to load than original v1 .bin format
More info about settings PointCloud2Binary settings
Click "Convert to Binary" button
Set output folder (Usually StreamingAssets/ so that its included in the build) and set filename (for example "test.ucpc"), wait for conversion to finish
Now open example scene "PointCloudTools/Demos/PointCloudViewer/Scenes/PointCloud-BinaryLoaderV2.scene"
Select "@BinaryViewer" gameobject from the Scene Hierarchy window
Inspector: Type your converted filename into BinarySourceFile field (if its inside StreamingAssets/ you don't need to enter full path like c:\projects\stuff\viewer\assets\StreamingAssets\myfile.ucpc, instead just put "myfile.ucpc" and the plugin will check if that file exists inside StreamingAssets/ folder)
Use the default "PointCloudColorSizeDX11v2.mat" material if you have RGB data, or "PointCloudColorsTintDX11" if you don't have RGB data
Hit Play to run the scene, cloud should appear in the view (use WASD keys+Mouse to fly)
You can now delete the original cloud file and IMPORT folder if you no longer want to convert them again

Window/PointCloudTools/Convert PointCloud to Unity Meshes
Drag&Drop your point cloud file from Project window into the "Point Cloud source file" field
Adjust settings. More info about PointCloud2Mesh settings
Assign material, for example "PointCloudColorsMesh" (if you have RGB data) or "PointCloudSingleColorMesh" if you don't have RGB data
Click "Convert to meshes" button
Select output folder, wait for conversion..done
Meshes are also added to the current open scene