calculation of insolation of buildings, solar radiation of buildings

Development Programming & Scripting Blueprint
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Cool project. What’s the grand scope here? Are we doing a handful of buildings? Or are we doing an entire city? Any specific questions?

Things to look into when figuring out the approach:

  • ISM - Instanced Static Mesh components to represent a facade
  • Per Instance Custom Data to colour them and keep performance high (if you’re doing a city block, you may want to opt for the hierarchical variant of ISMs)
  • actor Construction Script + 2D Grid Execution Macro will allow you to rapidly build the ISM facades; automate the process by sampling the underlying building’s transform
  • raycasts are called Line Traces in UE
  • SkyLight could be used to represent the sun
  • prototype the thing in blueprints
  • optionally, move the line tracing loop and math to C++
  • the math itself you already have, surely; doing it in BP can be a royal pain the neck due to the nature of wires and how much screen space it takes. There’s a bunch of helper nodes and the Math Expression, though.

General help you might be interested in:

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