/
polygon.jl
207 lines (185 loc) · 7.91 KB
/
polygon.jl
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"""
Polygon(args...)
Represent a Polygon with given arguments.
$(print_doc(POLYGON_DEFAULT))
"""
mutable struct Polygon <: SGMarks
opts
function Polygon(;opts...)
optsd = val_opts(opts)
cp_POLYGON_DEFAULT = update_default_opts!(deepcopy(POLYGON_DEFAULT), optsd)
if cp_POLYGON_DEFAULT[:x] === nothing || cp_POLYGON_DEFAULT[:y] === nothing || cp_POLYGON_DEFAULT[:id] === nothing
throw(ArgumentError("Polygon needs the x, y, and id keyword arguments"))
end
new(cp_POLYGON_DEFAULT)
end
end
# Polygon produces a separate polygon for each id
# It requires x, y, and id keyword arguments
# no preprocessing
function _push_plots!(vspec, plt::Polygon, all_args; idx=1)
# check if the required arguments are passed / create a new ds and push it to out_ds
_check_and_normalize!(plt, all_args)
_add_legends!(plt, all_args, idx)
opts = plt.opts
s_spec = Dict{Symbol,Any}()
s_spec[:type] = "group"
s_spec[:clip] = something(opts[:clip], all_args.opts[:clip])
s_spec_marks = Dict{Symbol,Any}()
s_spec_marks[:type] = "line"
s_spec_marks[:from] = Dict(:data => "source_0_$idx")
s_spec[:from] = Dict{Symbol,Any}()
s_spec[:from][:facet] = Dict{Symbol,Any}()
s_spec[:from][:facet][:name] = "group_facet_source"
s_spec[:from][:facet][:data] = "source_0_$idx"
s_spec[:from][:facet][:groupby] = opts[:id]
s_spec_marks[:from][:data] = "group_facet_source"
s_spec_marks[:encode] = Dict{Symbol,Any}()
s_spec_marks[:encode][:enter] = Dict{Symbol,Any}()
s_spec_marks[:encode][:enter][:interpolate] = Dict{Symbol,Any}(:value => string(opts[:interpolate], "-closed"))
s_spec_marks[:encode][:enter][:opacity] = Dict(:value => opts[:outlineopacity])
# s_spec_marks[:encode][:enter][:fillOpacity] = Dict(:value => opts[:fillopacity])
#fill opacity can be controlled by a column
if opts[:opacityresponse] === nothing
s_spec_marks[:encode][:enter][:fillOpacity] = Dict(:value => opts[:opacity])
else
s_spec_marks[:encode][:enter][:fillOpacity] = Dict(:field => opts[:opacityresponse], :scale => "opacity_scale_$idx")
addto_identity_scale!(vspec, "source_0", "opacity_scale_$idx", opts[:opacityresponse])
end
s_spec_marks[:encode][:enter][:strokeWidth] = Dict(:value => opts[:outlinethickness])
s_spec_marks[:encode][:enter][:strokeDash] = Dict(:value => opts[:outlinedash])
if opts[:outline]
s_spec_marks[:encode][:enter][:stroke] = Dict{Symbol,Any}()
# group in all plots uses the same scale
if opts[:group] === nothing
s_spec_marks[:encode][:enter][:stroke][:value] = opts[:outlinecolor]
else
s_spec_marks[:encode][:enter][:stroke][:scale] = "group_scale"
s_spec_marks[:encode][:enter][:stroke][:field] = opts[:group]
# group is the 5th element of scales
addto_group_scale!(vspec[:scales][5], "source_0_$idx", opts[:group], all_args)
end
end
s_spec_marks[:encode][:enter][:fill] = Dict{Symbol, Any}()
if opts[:colorresponse] === nothing
s_spec_marks[:encode][:enter][:fill][:value] = opts[:color]
else
s_spec_marks[:encode][:enter][:fill][:scale] = "color_scale_$idx"
s_spec_marks[:encode][:enter][:fill][:field] = opts[:colorresponse]
addto_color_scale!(vspec, "source_0", "color_scale_$idx", opts[:colorresponse], opts[:colorresponse] in all_args.nominal, color_model=opts[:colormodel])
end
s_spec_marks[:encode][:enter][:x] = Dict{Symbol,Any}()
if opts[:x2axis]
s_spec_marks[:encode][:enter][:x][:scale] = "x2"
addto_scale!(all_args, 2, all_args.ds, opts[:x])
addto_axis!(vspec[:axes][2], all_args.axes[2], opts[:x])
else
s_spec_marks[:encode][:enter][:x][:scale] = "x1"
addto_scale!(all_args, 1, all_args.ds, opts[:x])
addto_axis!(vspec[:axes][1], all_args.axes[1], opts[:x])
end
s_spec_marks[:encode][:enter][:x][:field] = opts[:x]
s_spec_marks[:encode][:enter][:y] = Dict{Symbol,Any}()
if opts[:y2axis]
s_spec_marks[:encode][:enter][:y][:scale] = "y2"
addto_scale!(all_args, 4, all_args.ds, opts[:y])
addto_axis!(vspec[:axes][4], all_args.axes[4], opts[:y])
else
s_spec_marks[:encode][:enter][:y][:scale] = "y1"
addto_scale!(all_args, 3, all_args.ds, opts[:y])
addto_axis!(vspec[:axes][3], all_args.axes[3], opts[:y])
end
s_spec_marks[:encode][:enter][:y][:field] = opts[:y]
filter_data = Dict{Symbol,Any}()
filter_data[:name] = "source_0_$idx"
filter_data[:source] = "source_0"
filter_data[:transform] = [Dict{Symbol,Any}(:type => :filter, :expr => "isValid(datum['$(opts[:x])']) && isValid(datum['$(opts[:y])'])")]
s_spec_marks[:encode][:enter][:defined] = Dict{Symbol,Any}(:signal => "isValid(datum['$(opts[:x])']) && isValid(datum['$(opts[:y])'])")
filter_data[:transform][1][:expr] = "1==1"
push!(vspec[:data], filter_data)
s_spec[:marks] = [s_spec_marks]
push!(vspec[:marks], s_spec)
end
function _check_and_normalize!(plt::Polygon, all_args)
opts = plt.opts
ds = all_args.ds
cols = all_args.referred_cols
if length(IMD.index(ds)[opts[:x]]) == 1
append!(cols, IMD.index(ds)[opts[:x]])
opts[:x] = _colname_as_string(ds, opts[:x])
else
@goto argerr
end
if length(IMD.index(ds)[opts[:y]]) == 1
append!(cols, IMD.index(ds)[opts[:y]])
opts[:y] = _colname_as_string(ds, opts[:y])
else
@goto argerr
end
if length(IMD.index(ds)[opts[:id]]) == 1
append!(cols, IMD.index(ds)[opts[:id]])
opts[:id] = _colname_as_string(ds, opts[:id])
else
@goto argerr
end
if opts[:group] !== nothing
if length(IMD.index(ds)[opts[:group]]) == 1
append!(cols, IMD.index(ds)[opts[:group]])
opts[:group] = _colname_as_string(ds, opts[:group])
else
@goto argerr
end
end
if opts[:colorresponse] !== nothing
if length(IMD.index(ds)[opts[:colorresponse]]) == 1
append!(cols, IMD.index(ds)[opts[:colorresponse]])
opts[:colorresponse] = _colname_as_string(ds, opts[:colorresponse])
else
@goto argerr
end
end
if opts[:opacityresponse] !== nothing
if length(IMD.index(ds)[opts[:opacityresponse]]) == 1
append!(cols, IMD.index(ds)[opts[:opacityresponse]])
opts[:opacityresponse] = _colname_as_string(ds, opts[:opacityresponse])
else
@goto argerr
end
end
return plt
@label argerr
throw(ArgumentError("only a single column must be selected"))
end
function _add_legends!(plt::Polygon, all_args, idx)
opts = plt.opts
# find the suitable scales for the legend
# group, color, symbol, angle, ...
which_scale = [opts[:group], opts[:colorresponse]]
if opts[:legend] === nothing
legend_id = "__internal__name__for__legend__$idx"
else
legend_id = opts[:legend]
end
if all_args.legends isa Vector
loc_of_leg = findfirst(x -> x.opts[:name] == legend_id, all_args.legends)
else
loc_of_leg = nothing
end
if loc_of_leg !== nothing # user provided some customisation
leg_spec = all_args.legends[loc_of_leg]
else
leg_spec = Legend(name=legend_id)
end
leg_spec_cp = Dict{Symbol,Any}()
if which_scale[1] !== nothing
_title = which_scale[1]
leg_spec_cp[:stroke] = "group_scale"
_build_legen!(leg_spec_cp, leg_spec.opts, "stroke", _title, "$(legend_id)_group_scale_legend_$idx", all_args; symbolDash=plt.opts[:outlinedash])
push!(all_args.out_legends, leg_spec_cp)
end
if which_scale[2] !== nothing
leg_spec_cp[:fill] = "color_scale_$idx"
_build_legen!(leg_spec_cp, leg_spec.opts, nothing, which_scale[2], "$(legend_id)_color_scale_legend_$idx", all_args)
push!(all_args.out_legends, leg_spec_cp)
end
end