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Allow animation frame saving frequency to be a variable.

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This commit is contained in:
Graham A Smith 2018-01-31 13:12:32 -06:00
parent 1ed7899296
commit 11a856fbb3
1 changed files with 3 additions and 1 deletions
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4
src/animation.jl
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@ -115,6 +115,7 @@ function _animate(forloop::Expr, args...; callgif = false)
# add the call to frame to the end of each iteration
animsym = gensym("anim")
countersym = gensym("counter")
freqassert = :()
block = forloop.args[2]
# create filter
@ -127,7 +128,7 @@ function _animate(forloop::Expr, args...; callgif = false)
# filter every `freq` frames (starting with the first frame)
@assert n == 2
freq = args[2]
@assert isa(freq, Integer) && freq > 0
freqassert = :(@assert isa($freq, Integer) && $freq > 0)
:(mod1($countersym, $freq) == 1)
elseif args[1] == :when
@ -147,6 +148,7 @@ function _animate(forloop::Expr, args...; callgif = false)
# full expression:
esc(quote
$freqassert # if filtering, check frequency is an Integer > 0
$animsym = Animation() # init animation object
$countersym = 1 # init iteration counter
$forloop # for loop, saving a frame after each iteration