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-
- Vibra.doc
-
- Fred Mitchell Version 1.00 6-01-89
- (215)228-7490
-
- Simulation of vibrating lines and planes
-
- NOTE: (c) 1989 Mitchell/Ware Systems. All rights reserved.
- This program may be freely distributed INTACT,
- UNALTERED in any way. The Three files must be present:
- Vibra
- Vibra.info
- Vibra.doc
- Anyone wishing to place this program on a Public Domain Disk
- should call and let me know about it first.
-
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-
- Well, this is a really strange program! One day, while walking along
- in the park next to this lovely river, I wondered about the rising and
- falling of the waves in the water. Mainly, if there were a simple way
- to simulate them in a manner which would allow me to see them in in real
- time. Well, Vibra is a far cry from real water, but it allows you to
- see the dynamics involved.
-
- Vibra sets up a number of what I call 'knots', linked by elastic
- elements that I shall refer to as 'rubber bands'. I know this is an
- extremely non-technical way to describe this, but just as well- the
- metaphor fits nicely.
-
- Each knot is given a certain mass, and rubber bands are given a certain
- 'springiness' factor. The knots are restricted to vertical motion, and
- are spaced at even intervals. Rubber bands join adjacent knots. Zero
- gravity is assumed. You may move any knot along its path of motion
- using the mouse. In the case of the Line simulation, the rightmost knot
- is anchored by a spring. In the case of the Plane Simulation, the knots
- at the edges are anchored, as though it were a trampoline. This
- anchoring can be turned off from the menu (Bound) so that the Line or
- Plane is totally unanchored.
-
- When you begin a simulation, all knots are at their 'rest' positions,
- at zero velocity. Simply pick up a knot with the mouse and deposit it
- elsewhere. Then the fun begins!
-
- The Plane simulation is notoriously slow for even modest dimensions.
- For tolerably fast Plane simulations, keep the dimensions under 10.
- (By dimensions, I mean how many knots on an edge. The Plane, then, will
- have 100 knots for a dimension of 10.)
-
- If you have any questions about this program, simply give me a call at
- (215)228-7490.
-
- -Fred Mitchell of Mitchell/Ware Systems
-
- (Have Fun!)
-