procedural coding help with viewport/character distance needed

Development Programming & Scripting C++
1

Working with some procedural code:


return FMath::Clamp(FMath::CeilToInt(FMath::Log2(Size / float(CHUNK_SIZE))), 1, MAX_WORLD_DEPTH - 1);

returns an int based on Size. I don’t want to calculate based on Size only, want to generate based on 2 additional things:

  1. If character is within certain range return

FMath::Log2(Size / float(CHUNK_SIZE))
  1. The more complicated part:

If character is outside of a certain range and the the object is within character viewport return an int


FMath::Log2(Size / float(CHUNK_SIZE))

If the object is not within the character viewport and is also not in range I want it to be


FMath::Log10(Size / float(CHUNK_SIZE))

instead.

In essence returning a smaller exponential increase in lod on the front of a sphere with a rapid lod increase on the non-visible backside of a sphere.

Any help/tips would be appreciated.

2

There’s a static function FVector:: Dist() to get you the distance between two vectors;

Actor->GetLastRenderTime() will tell you if that Actor has been rendered on screen recently.

3

If the class in question runs procedural algorithms external to the player character how would you get the location of the player character camera to use the Dist() function?

Followup: How would you get the camera look direction?