File syntax¶
The Lpy file format is based on the python language which is extended with L-system particular constructs.
Canvas of L-Py file¶
# pure python code
def func():
# python code
nproduce lstring # it is possible to use the nproduce statement
# in this part of the file
module A,B # declaration of module name
Axiom: lstring # declaration of axiom
derivation length: int # default = 1
# number of derivation step to perform
production: # beginning of production rules
pattern : # a production rule. Start with successor given as a pattern of module to replace
python code # rule core are pure python code with production statement
produce lstring # production statement giving the new string pattern to produce
# simple rules can be expressed this way
pattern --> new_pattern
homomorphism: # beginning of homomorphism rules.
# They are called before plotting the string or
# application of rule with query modules (?[PHUR])
maximum depth: int # default = 1
# number of homomorphism recursive step to perform.
# should be defined only once
decomposition: # beginning of decomposition rules.
# These rules are applied recursively after each production step
# usefull to decompose a module into a structure
maximum depth: int # default = 1
# number of decomposition recursive step to perform.
# should be defined only once
group: int # all following rules will be assign to this group
# to activate a group of rule see command useGroup
# by default group 0 is active
production: # again all types of rule can be defined
homomorphism:
decomposition:
endgroup # following rules will be assign to default 0 group
production: # again all types of rule can be defined
homomorphism:
decomposition:
endlsystem # end of rules definition
# pure python code is again possible