glmakie_tests.jl

@block Contributors ["GLMakie backend tests"] begin

    # A test case for wide lines and mitering at joints
    @cell "Miter Joints for line rendering" [lines] begin
        scene = Scene()

        r = 4
        sep = 4*r
        scatter!(scene, (sep+2*r)*[-1,-1,1,1], (sep+2*r)*[-1,1,-1,1])

        for i=-1:1
            for j=-1:1
                angle = pi/2 + pi/4*i
                x = r*[-cos(angle/2),0,-cos(angle/2)]
                y = r*[-sin(angle/2),0,sin(angle/2)]

                linewidth = 40 * 2.0^j
                lines!(scene, x .+ sep*i, y .+ sep*j, color=RGBAf0(0,0,0,0.5), linewidth=linewidth)
                lines!(scene, x .+ sep*i, y .+ sep*j, color=:red)
            end
        end
        scene
    end

    # Test for resizing of TextureBuffer
    @cell "Dynamically adjusting number of particles in a meshscatter" [meshscatter] begin
        using FileIO, Colors

        catmesh = FileIO.load(MakieGallery.assetpath("cat.obj"))

        pos     = Node(rand(Point3f0, 2))
        rot     = Node(rand(Vec3f0, 2))
        color   = Node(rand(RGB, 2))
        size    = Node(1/2*rand(2))

        makenew = Node(1)
        on(makenew) do _
            i = rand(1:100)
            pos[]    = rand(Point3f0, i)
            rot[]    = rand(Vec3f0, i)
            color[]  = rand(RGB, i)
            size[]   = 1/2*rand(i)
        end

        scene = meshscatter(pos,
            marker=catmesh,
            rotations=rot,
            color=color,
            markersize=size,
            limits=FRect3D(Point3(0), Point3(1))
        )

        for _ in 1:5
            makenew[] = makenew[] + 1
        end
        scene
    end


end