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Diffuse2d

Documentation Set for Swarm 2.2
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Diffuse2d

Name

Diffuse2d -- 2d difussion with evaporation.

Description

Discrete 2nd order approximation to 2d diffusion with evaporation. Math is done in integers on the range [0,0x7fff].

Protocols adopted by Diffuse2d

Methods

Phase: Creating

- initializeLattice
Initialize world to 0.
+ create: (id <Zone>)aZone setSizeX: (unsigned)x Y: (unsigned)y setDiffusionConstant: (double)d setEvaporationRate: (double)e
Convenience constructor for Diffuse2d

Phase: Setting

- setEvaporationRate: (double)e
Set the evaporation rate. Values over 1.0 don't make much sense
- setDiffusionConstant: (double)d
Set the diffusion constant. Values over 1.0 might not be valid.

Phase: Using

- stepRule
Run discrete approximation to diffusion. Roughly, it's newHeat = evapRate * (self + diffuseConstant*(nbdavg - self)) where nbdavg is the weighted average of the 8 neighbours.

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