| Comments on CHRONO example collision_funnell.r3d |
| Collision between mechanisms (from tutorial on user manual) |
| What to do: load the file, press the play button on the animation timeline and watch the spheres falling into the funnell, then running against the mill. The mill, hit by the spheres, will start rotating. (watch at least 5 seconds of simulation, i.e. set at least 200 as number of frames). |
This simulation demonstrates the collision detection between spheres and
other geometries. Chrono is optimized for fast collision detection when
using primitives of sphere or cylinder type, therefore on recent CPU
this simulation should display in real time.
Note 1: colliding shapes can be made of whatever geometries, but
remeber that booleans between CSG analytic shapes is not supported.
Also, note that moving objects should be preferably made of spheres,
cylinders and cubes in sake of best performance and precision (on the
other side, static shapes can be made of whatever geometry type).
Note 2: in the 'mill' rigid body you can see that there's a geometry
called 'spindle': it's a cylinder analytical primitive representing the
long horizontal shaft of the mill. We meant to deactivate collision
detection for that cylinder only (otherwise, at its ends, it would collide also
wiht the two vertical supports, belonging to the ground). To do this,
we selected 'spindle', we opened its property windows, 'Tags' tab, then
we entered the integer tag 'noc=1', meaning that the primitive
performs NO Collision.
(c) DeltaKnowledge 2007