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* Disambiguate python use #1250 Changed all calls to /usr/bin/python to /usr/bin/env python3. Removed execute permissions on a lot of files that are not executable. closes #1250
SIM_contact
SIM_contact simulates the motion, and the collisions of any arbitrary numbers of moving balls.
Each ball is defined by a position, velocity, radius, and mass.
Collisions are purely elastic. In addition to conserving momentum, they also conserve kinetic energy.
A graphics client allows you to see the balls in motion:
Examples
The configuration for the above display is:
dyn.contact.nballs = 2
dyn.contact.balls = trick.TMM_declare_var_1d("Ball*", dyn.contact.nballs)
dyn.contact.balls[0] = trick.make_Ball(0.0, 0.0, 0.5, 0.0, 0.5, 1.0)
dyn.contact.balls[1] = trick.make_Ball(3.0, 0.0, -0.5, 0.0, 0.5, 1.0)
The initial state of the first ball is pos=<0.0, 0.0>, vel=<0.5,0.0>, radius=0.5, and mass=1.0.
The initial state of the second ball is pos=<3.0, 0.0>, vel=<-0.5,0.0>, radius=0.5, and mass=1.0.