Collision Detect allows you to control the collision operation surface by surface. If you check the box of Collision Detect, the collision operation will work. If you leave the box unchecked, the collision operation will not work on that surface. Remember that the greater number of surfaces for which the collision operation is performed, the longer the calculation time. Removing Collision Detect from those surfaces that do not need that feature will minimize the calculation time.
Self Collision allows you to control the self collision operation surface by surface. If you check the box of Self Collision, the collision operation will work between the selected surface and the target object itself. If you leave the box unchecked, the self collision operation does not work on the surface. Remember that the greater number of surfaces for which the self collision operation is performed, the longer the calculation time. Removing Self Collision and Collision Detect from those surfaces that do not call for that feature will minimize the calculation time.
The
animation on the left is a model depicting a purple ball pushing
a blue cloth upward. Since Skin Thickness is set to 0, the polygons
of the ball penetrate those of the cloth. This is due to the fact
that the collision is determined in reference to points on the cloth.
(Notice that the points on the cloth do not penetrate the ball.)
Setting
Skin Thickness to 0.1 (m) ensures a margin of
0.1 (m) during collision and prevents the ball from penetrating
the cloth.
bind force=0, bind force=1
It creates an effect that attracts other objects to the surface of the collision object.
bound=1, bound=2
A rebound effect (speed change) at the moment of collision. It does not change speed with Bound=0. The object is the same speed as as the collision object with a setting of Bound=1. It rebounds at the same speed as before the collision with a setting of Bound=2.
friction=0, friction=3 (bind force>0)
friction=0, friction=3 (bind force=0)
This function simulates the effect of friction between the surfaces of two objects.
fix force=0, fix force=1 (bind force>0)
fix force=0, fix force=20 (bind force=0)
This function simulates the "static friction" effect on the surface of a collision object. It is fixed on the surface of a collision object by designating fixation power, although there is not the case it is fixed completely in normal friction.