How do you check collision ?

**DirectuX** · 19-12-2019, 16:50

Hi,

regarding this old 2009 post #5 and subsequent #6. Today, how would you check for collision between a 3d triangle (poly) and other geometry (triangle, quad or box) ?
( 20 ~ 100+ entity, 60fps)

**Petr Schreiber** · 23-12-2019, 13:15

Hi Sebastian,

I remember those times, I started working on collision library, but then I decided it was not good idea to bloat TBGL further.

As of today, I think it would be the best to create dedicated collision module - or #compiled booster at least.

Petr

**DirectuX** · 23-12-2019, 20:42

Originally Posted by Petr Schreiber

As of today, I think it would be the best to create dedicated collision module - or #compiled booster at least.

can't this be done by the gpu ?

**primo** · 24-12-2019, 08:37

Hi DirectuX
there is a collision engine posted here some time ago, the 2 examples are for cubes, but the *.inc file contains a sphere and other shapes, i haven't checked it more
https://www.thinbasic.com/community/...rcial-license)
here is a one week link
http://wikisend.com/download/996384/TB_TrueAxis.zip

edit: i checked the package with virusTotal and it is fully clean.
edit2: don't know if you know about xord3d (abandonware) , since i have posted here http://www.thinbasic.com/community/s...l-with-physics in a mediafire link a full package containing a spiral and a knot and when you press 'W' you see the meshes in wire mode and there is a sphere rolling inside the tubes. a collision between the sphere and inside the tubes.

**Petr Schreiber** · 26-12-2019, 21:03

can't this be done by the gpu ?

Sure, what I wrote does not contradict that

Both module and #compiled can use for example OpenCL or Vulkan. But I would suggest to make it optional - the presence of support for both technologies is not guaranteed on non-gaming rigs.

Petr