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We've given you a few XML .mycelia files to play with. They are located in two folders within the samples folder that our installer will create on your hard-disk when you download the program. One folder is called mushroom and the other discomycete. Both contain a selection of XML files that were saved at various stages during the development of two classic Neighbour-Sensing tissue structures. The XML files allow you to load the intermediate stages in development of the structures.
To load an XML file run the Neighbour-Sensing program and start from the file menu of Neighbour-Sensing's main screen. Go to Open mycelia file and then use the file dialogue to browse to the location of the mycelia file(s). For example, to use one of ours, browse to samples\mushroom\ and choose one of the XML files. The file will load as a paused simulation. You can un-pause it to see what happens next, or leave it in the paused state while you inspect it by cutting slices, or rotating, etc. And if you make a mess, you just load the XML again.
From the \mushroom\ collection you can load stages in development of one of our mushrooms:
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The \discomycete\ collection includes a range of stages in development of a cup-like fruit body, the final stage of which looks like this:
This cup shape requires much less control than other forms. It is enough to have the fixed parameter set: Pbranch = 40%, Nbranch = 0.06 (density field hypothesis used), field generated by all components of mycelia, λc=20, k (persistence factor) = 0.1, λg = 0.0020 with tolerance = ±5°. λg is the impact of the diagravitropic component; it is shown as 'sensitivity to gravitropism by angle' on the Tropisms tab of the details dialogue box in the modelling workspace. Long range autotropic interaction was switched off. The angle of plagiogravitropic reaction (b) was chosen to be equal to 45o in this example.
You may like to experiment with this. If you reduce the impact of (= sensitivity to) the gravitropic field (λg), it is possible to get cup shapes that might be more similar to real fungal fruit bodies. For example, using the same parameter set as above but with λg(sensitivity to diagravitropic component) reduced from 20 x 10-4 to 5 x 10-4 generates the following structure:
which a slice shows still has a cavity in the upper central region:
this sort of thing can get really interesting! Try it. Remember that each time you try it you are 'growing' a new structure; you are not just replaying a video you have already seen. Each new tral is an independent experiment showing you how cyberfungal hyphae respond to the growth conditions and restraints you set as 'parameters' in the dialogue boxes of the modelling space.
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