Algodoo

Nice work. high resolution and good performance.

Camera: Exists
Spinning object: I'm about the end this man's entire career

Ken3344

Its fun to play around with but i noticed it also distorts objects that aren't moving when you add a new object with the collision layer. May i ask why that is?

I use three collision layers to detect each blade individually from both sides
Lasers are pointed from sides like this ---> <--- to find where exactly the blade is, if I used only one collision layer, I couldn't see the gap between blades
---> one blade____space____second blade <----
So if you want to make something hollow, for example donut, make a two "C" shaped object (one will be mirrored of course) and set them to different collision layyers, so laser can also see inside, like this:

empty space____________donut______inner hole_____donut_________empty space
blue laser ------------>donut<-----------------------------------blue laser
red laser -------------------------------------->donut<-----------red laser

I hope you understand my crude explanation