koobas.hobune.stream
renderer.is(Completely)Visible?
I'm trying to make a camera that follows two players which zooms in and out. It zooms in when both characters are visible and zooms out when one or more aren't visible. I used renderer.isVisible to approach this and it works well; but it's not entirely what I want. A character that is completely off of the screen except for a single pixel will register as "visible." Is there a way that I can only call a character visible if they are entirely on the screen?
Please, no links to the documentary or previously asked questions. I don't even necessarily need code (although that would be nice!) but just an idea or a good way to approach this. Thanks in advance!
A potential way to do this would be to use Camera.WorldToScreenPoint on several vertices that bound your object (you can probably calculate these vertices using renderer.bounds). If all of the vertices are within the screen bounds then the object is entirely on the screen.
There is also GeometryUtility.TestPlanesAABB which may eliminate some of that work. You can pass Renderer.bounds along with the frustum planes calculated by GeometryUtility.CalculateFrustumPlanes. But the documentation isn't entirely clear if it returns true only if the bounds are entirely within/touching the planes, or if it would return true if it's partially within, so you'd need to test that.
I believe renderer.isVisible will give you exactly the same results as GeometryUtility.TestPlanesAABB with Renderer.bounds. The only big difference is that isVisible will check all active cameras, while GeometryUtility lets you pick.
Haven't tested it though, but I'd be supprised if that wasn't the case.
