fix cairomakie reversed heatmap +clean up tests

CairoMakie/src/primitives.jl

@@ -483,23 +483,21 @@ function draw_atomic(scene::Scene, screen::CairoScreen, primitive::Union{Heatmap
     image = primitive[3][]
     xs, ys = primitive[1][], primitive[2][]
 
-    if !(xs isa Vector)
+    if !(xs isa AbstractVector)
         l, r = extrema(xs)
         N = size(image, 1)
         xs = range(l, r, length = N+1)
     else
         xs = regularly_spaced_array_to_range(xs)
     end
-    if !(ys isa Vector)
+    if !(ys isa AbstractVector)
         l, r = extrema(ys)
         N = size(image, 2)
         ys = range(l, r, length = N+1)
     else
         ys = regularly_spaced_array_to_range(ys)
     end
     model = primitive[:model][]
-    imsize = (extrema_nan(xs), extrema_nan(ys))
-
     interp = to_value(get(primitive, :interpolate, true))
     weird_cairo_limit = (2^15) - 23
 
@@ -508,7 +506,11 @@ function draw_atomic(scene::Scene, screen::CairoScreen, primitive::Union{Heatmap
     fast_path = to_value(get(primitive, :fast_path, true))
     # Vector backends don't support FILTER_NEAREST for interp == false, so in that case we also need to draw rects
     is_vector = is_vector_backend(ctx)
-    if fast_path && xs isa AbstractRange && ys isa AbstractRange && !(is_vector && !interp)
+    t = Makie.transform_func_obs(primitive)[]
+    identity_transform = t === identity || t isa Tuple && all(x-> x === identity, t)
+    if fast_path && xs isa AbstractRange && ys isa AbstractRange && !(is_vector && !interp) && identity_transform
+        imsize = ((first(xs), last(xs)), (first(ys), last(ys)))
+
         # find projected image corners
         # this already takes care of flipping the image to correct cairo orientation
         xy = project_position(scene, Point2f0(first.(imsize)), model)
@@ -522,6 +524,7 @@ function draw_atomic(scene::Scene, screen::CairoScreen, primitive::Union{Heatmap
         if s.width > weird_cairo_limit || s.height > weird_cairo_limit
             error("Cairo stops rendering images bigger than $(weird_cairo_limit), which is likely a bug in Cairo. Please resample your image/heatmap with e.g. `ImageTransformations.imresize`")
         end
+
         Cairo.rectangle(ctx, xy..., w, h)
         Cairo.save(ctx)
         Cairo.translate(ctx, xy...)

ReferenceTests/src/ReferenceTests.jl

@@ -15,6 +15,7 @@ using Tar
 using Downloads
 using Pkg.TOML
 using Statistics
+using ImageShow
 
 basedir(files...) = normpath(joinpath(@__DIR__, "..", files...))
 loadasset(files...) = FileIO.load(assetpath(files...))

ReferenceTests/src/html_rendering.jl

@@ -32,21 +32,17 @@ function get_medias(path, result=[])
     return result
 end
 
-using ImageShow
-
 function generate_test_summary(path, recorded_root, refimages_root, scores)
     open(path, "w") do io
         scores_sorted = sort!(collect(scores), by=last, rev=true)
         for (filename, score) in scores_sorted
             media_ref = get_medias(joinpath(refimages_root, filename))
             media_recorded = get_medias(joinpath(recorded_root, filename))
-            println(io, "<h1> $filename : $(round(score, digits=4)) </h1>")
+            println(io, "<h1> $filename [overlay, reference, recorded] : $(round(score, digits=4)) </h1>")
             for (ref, rec) in zip(media_ref, media_recorded)
-                diff = (ref .- rec) ./ 2.0
-
-                diff2 = (ref .* 0.5) .+ (rec .* 0.5)
+                diff = (ref .* 0.5) .+ (rec .* 0.5)
                 ctx = IOContext(io, :thumbnailsize=> size(diff), :thumbnail => false)
-                show(ctx, "text/html", [diff, diff2])
+                show(ctx, "text/html", [diff, ref, rec])
             end
         end
     end

ReferenceTests/src/tests/examples3d.jl

@@ -99,21 +99,6 @@ end
     wireframe(r, r, z)
 end
 
-@cell "Surface" begin
-    N = 30
-    function xy_data(x, y)
-        r = sqrt(x^2 + y^2)
-        r == 0.0 ? 1f0 : (sin(r) / r)
-    end
-    lspace = range(-10, stop=10, length=N)
-    z = Float32[xy_data(x, y) for x in lspace, y in lspace]
-    r = range(0, stop=3, length=N)
-    surface(
-        r, r, z,
-        colormap=:Spectral
-    )
-end
-
 @cell "Surface with image" begin
     N = 30
     function xy_data(x, y)
@@ -189,7 +174,6 @@ end
     contour3d(r, r, (x, y) -> xy_data(10x, 10y), levels=20, linewidth=3)
 end
 
-
 @cell "Arrows 3D" begin
     function SphericalToCartesian(r::T, θ::T, ϕ::T) where T <: AbstractArray
         x = @.r * sin(θ) * cos(ϕ)

ReferenceTests/src/tests/short_tests.jl

@@ -64,11 +64,9 @@ end
     fig
 end
 
-
 @cell meshscatter(RNG.rand(10), RNG.rand(10), RNG.rand(10), color=RNG.rand(10))
 @cell meshscatter(RNG.rand(10), RNG.rand(10), RNG.rand(10), color=RNG.rand(RGBAf0, 10))
 
-
 @cell begin
     s1 = uv_mesh(Sphere(Point3f0(0), 1f0))
     mesh(uv_mesh(Sphere(Point3f0(0), 1f0)), color=RNG.rand(50, 50))
@@ -81,7 +79,7 @@ end
 
 @cell "Unequal x and y sizes in surface" begin
     #
-    NL = 30
+    NL = 15
     NR = 31
     function xy_data(x, y)
         r = sqrt(x^2 + y^2)
@@ -154,5 +152,11 @@ end
 end
 
 @cell "log10 heatmap" begin
-    heatmap(rand(10, 5), axis = (yscale = log10, xscale=log10))
+    heatmap(RNG.rand(10, 5), axis = (yscale = log10, xscale=log10))
+end
+
+@cell "reverse range heatmap" begin
+    x = [1 0
+         2 3]
+    heatmap(1:2, 1:-1:0, x)
 end

WGLMakie/src/imagelike.jl

@@ -30,17 +30,22 @@ function draw_mesh(mscene::Scene, mesh, plot; uniforms...)
     return Program(WebGL(), lasset("mesh.vert"), lasset("mesh.frag"), mesh; uniforms...)
 end
 
-_length(x::Makie.IntervalSets.AbstractInterval) = 2
-_length(x) = length(x)
+xy_convert(x::AbstractArray{Float32}, n) = copy(x)
+xy_convert(x::AbstractArray, n) = el32convert(x)
+xy_convert(x, n) = Float32[LinRange(extrema(x)..., n + 1);]
 
 function limits_to_uvmesh(plot)
     px, py, pz = plot[1], plot[2], plot[3]
+    px = map((x, z)-> xy_convert(x, size(z, 1)), px, pz)
+    py = map((y, z)-> xy_convert(y, size(z, 2)), py, pz)
     # Special path for ranges of length 2 wich
     # can be displayed as a rectangle
-    if _length(px[]) == 2 && _length(py[]) == 2
+    t = Makie.transform_func_obs(plot)[]
+    identity_transform = t === identity || t isa Tuple && all(x-> x === identity, t)
+    if length(px[]) == 2 && length(py[]) == 2 && identity_transform
         rect = lift(px, py) do x, y
-            xmin, xmax = extrema(x)
-            ymin, ymax = extrema(y)
+            xmin, xmax = x
+            ymin, ymax = y
             return Rect2D(xmin, ymin, xmax - xmin, ymax - ymin)
         end
         positions = Buffer(lift(rect-> decompose(Point2f0, rect), rect))
@@ -55,7 +60,7 @@ function limits_to_uvmesh(plot)
             return vec(g)
         end
         rect = lift(z -> Tesselation(Rect2D(0f0, 0f0, 1f0, 1f0), size(z) .+ 1), pz)
-        positions = Buffer(lift(grid, px, py, pz, transform_func_obs(plot)))
+        positions = Buffer(lift(grid, px, py, pz, t))
         faces = Buffer(lift(r -> decompose(GLTriangleFace, r), rect))
         uv = Buffer(lift(decompose_uv, rect))
     end