A weird
name for a weird parameter.
The Energy treshold is the minimun amount of energy that an
object needs to "have"
in order to start its movement.
Ummm... yeah,really cool definition!.. Now could you please explain it in English?
Hehe, ok, lets see, as a picture is worth a 1000 words, let's
take a look to that scene!!
The
energy tresholds of the spheres are as follows
Big |
Medium |
Small |
| 0,0005 |
0,0005 |
0,0005 |
And
the mass of each one
Big |
Medium |
Small |
| 30
kg |
1kg |
0,0003kg |
When pressing Action, you will notice that the small ball doesn´t
move.
That's because the energy it receives from gravity is not enough
to start its movement.
Changing
the energy threshold...
Big |
Medium |
Small |
| 0,0005 |
0,0005 |
0 |
Now, knowing that, imagine a fractured object. It´s quite
usual to have big pieces of geometry combined with small ones.
If the mass of the small ones is not enough (as with the
small sphere) it wont move. Just change the Energy threshold back to what it was
before to make it work.
Objects with an energy threshold set to 0 always moves.
Another interesting feature of the energy threshold is the capability
to optimize the performance of your simulation.
Here's an example (the video can be found in our gallery):
The energy threshold is set to start the movement of the pieces
only when it's hit by another and stops when it lays on the ground.
An object gains energy by forces (like gravity) or by collisions
with particles or with another object.
