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improve nonuniform heatmap performance on GR

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This commit is contained in:
Daniel Schwabeneder 2020-06-05 18:23:48 +02:00
parent 9c465b58db
commit 87d40cd34d
1 changed files with 7 additions and 2 deletions
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9
src/backends/gr.jl
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@ -943,6 +943,12 @@ function is_equally_spaced(v)
all(d .≈ d[1])
end
remap(x, lo, hi) = (x - lo) / (hi - lo)
function get_z_normalized(z, clims...)
isnan(z) && return 256 / 255
return remap(clamp(z, clims...), clims...)
end
function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
_update_min_padding!(sp)
@ -1712,8 +1718,7 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
if something(series[:fillalpha],1) < 1
@warn "GR: transparency not supported in non-uniform heatmaps. Alpha values ignored."
end
colors = get(fillgrad, z, clims)
z_normalized = map(c -> c == invisible() ? 256/255 : PlotUtils.getinverse(fillgrad, c), colors)
z_normalized = get_z_normalized.(z, zmin, zmax)
rgba = Int32[round(Int32, 1000 + _i * 255) for _i in z_normalized]
GR.nonuniformcellarray(x, y, w, h, rgba)
end