Example project that utilises the xsite_ue plugin for Caves or multi monitor setups. xsite_ue is included as a git submodule, make shure to clone with "--recursive" or init the submodule later.
Built for Unreal Engine 4.25.3 (4.25.0-4.25.2 or newer versions may or may not work...)
git clone --recursive git@github.com:bnlrnz/xsite_ue_example.git
cd xsite_ue_example
git lfs install
git lfs pullOpen .uproject file with Unreal Editor
There are 3 example configuration files (and our full configuration) available in the content folder (the json files). They do not contain any warping or blending stuff and work on a single machine.
Hierarchy is as follows:
Coordinate system in config: left hand (x, left-right; y, top-bottom), -z is front; usually meters if not stated otherwise
root
|
|----system // this is only used to label this file, it will not be used inside unreal
|----date // as system
|----eye // the position of the camera in meters
|----walls // an array that contains the definitions of planar surfaces on which we will project our screens/windows
|
|----name // to identify the wall
|----size // in meters, width and height, you can simply measure or just choose a size with the correct aspect ratio
|----normal // in which direction does the wall face
|----bounds
| |----top_left
| |----bottom_right // the extents of the wall in real world coordinates (meters), this should corresponde with the size
|
|----camera
| |----F // camera intrisics, you can leave these empty if you dont need/want to warp
| |----Fi // camera intrisics, you can leave these empty if you dont need/want to warp
|
|----clients // an array that contains all computers which will participate in rendering the scene
|----name // this is important, place hostname here, it will identify which extra window to spawn! * is a wildcard here, every computer will spawn the following screens/projectors
|----id // not used for now, ignore this
|----ip // not used for now, ignore this
|----projectors // array of windows that will be spawned
|----name // just an identifier
|----id // not used for now, ignore this
|----display // not used for now, ignore this
|----screen // not used for now, ignore this
|----resolution // the windows resolution
|----offset // the windows offset (top left corner position),e.g. you can use this in an extended FullHD dual monitor setup to shift one window 1920px to the right/left
|----alphamask // name of the png file that includes the alpha mask, this is used for blending, if you leave this blank no blending shader will be applied
|----corners // this contains the definition of some corners/extents for several coordinate systems (not all are used/usefull for us)
| |----projector_space // not used for now, ignore this
| |----camera_space // not used for now, ignore this; the extents of this screen/projector in camera space coordinates
| |----display_space // this is important; the relativ extents of this screen/projector corresponding to its wall
|
|----view_volume // not used for now, ignore this; the coordinates defining the view frustum; this is calculated by the other values in unreal coordinates
|----H_x,H_y,Hi_x,Hi_y // warping parameters, you can leave these empty if you dont need/want to warp