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Gridlines and inverted mode #4

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Gridlines and inverted mode #4

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33 changes: 29 additions & 4 deletions src/plot.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -44,16 +44,41 @@ end
function plot(data::PlotInputs, start::Real=-10, stop::Real=10;
border::Bool=true, labels::Bool=true, title::Bool=true,
cols::Int=60, rows::Int=16, margin::Int=9,
scalefunc::Function=identity)
grid = fill(char(0x2800), cols, rows)
invert::Bool=false, gridlines::Bool=false)

if gridlines
if invert
fill_char=char(0x283F)
else
fill_char=char(0x2812)
end
else
if invert
fill_char=char(0x28FF)
else
fill_char=char(0x2800)
end
end
grid = fill(fill_char, cols, rows)
if invert
base_char=10495
else
base_char=10240
end
left, right = sides = ((0, 1, 2, 6), (3, 4, 5, 7))
function showdot(x, y) # Assumes x & y are already scaled to the grid.
invy = (rows - y)*0.9999
col, col2 = int(floor(x)), int(floor(x*2))
row, row4 = int(floor(invy)), int(floor(invy*4))
grid[col + 1, row + 1] |= 1 << sides[1 + (col2 & 1)][1 + (row4 & 3)]
offset=1 << sides[1 + (col2 & 1)][1 + (row4 & 3)]
if invert
grid[col + 1, row + 1] = convert(Char, base_char-offset)
else
grid[col + 1, row + 1] = convert(Char, base_char+offset)
end
end


continuous = isa(data, Vector{Function})
if continuous
xframes, yframes = cols, rows
Expand Down Expand Up @@ -159,4 +184,4 @@ function plot(rng::Range, etc...; args...)
end
function logplot(etc...; args...)
plot(etc...; scalefunc=log10, args...)
end
end