From 1fe9e0d0947995df4d9c54259fde47f078ff1dee Mon Sep 17 00:00:00 2001
From: Rainer Rodrigues <rainerrodrigues16@gmail.com>
Date: Mon, 13 Apr 2026 11:40:17 +0100
Subject: [PATCH] Support arbitrary kwargs for materials (fixes #75)

---
 src/lowering.jl | 3 +++
 src/objects.jl  | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/src/lowering.jl b/src/lowering.jl
index fc5eea0..a061697 100644
--- a/src/lowering.jl
+++ b/src/lowering.jl
@@ -239,6 +239,7 @@ function lower(material::GenericMaterial)
     if material.map !== nothing
         data["map"] = lower(material.map)
     end
+    merge!(data, material.kwargs)
     data
 end
 
@@ -363,6 +364,7 @@ function lower(cloud::FatLineGeometry)
     if !isempty(cloud.color)
         data["color"] = lower(convert(Vector{RGB{Float32}}, cloud.color))
     end
+    merge!(data, cloud.kwargs)
     data
 end
 
@@ -384,5 +386,6 @@ function lower(material::FatLineMaterial)
         data["dashSize"] = material.dashSize
         data["gapSize"] = material.gapSize
     end
+    merge!(data, material.kwargs)
     data
 end
diff --git a/src/objects.jl b/src/objects.jl
index bc76429..c038d8b 100644
--- a/src/objects.jl
+++ b/src/objects.jl
@@ -45,6 +45,7 @@ PngImage(fname::AbstractString) = PngImage(open(read, fname))
     image::PngImage
     wrap::Tuple{Int, Int} = (1001, 1001)  # TODO: replace with enum
     repeat::Tuple{Int, Int} = (1, 1)      # TODO: what does this mean?
+    kwargs::Dict{String, Any} = Dict{String, Any}()
 end
 
 @with_kw mutable struct GenericMaterial <: AbstractMaterial
@@ -59,6 +60,7 @@ end
     side::Int = 2            # TODO: make an enum https://github.com/mrdoob/three.js/blob/d55897b8e9b2632896d8ac146a05b3b4be3668f8/src/constants.js#L14
     wireframe::Bool = false
     wireframeLinewidth::Float64 = 1
+    kwargs::Dict{String, Any} = Dict{String, Any}()
 end
 
 threejs_type(m::GenericMaterial) = m._type
@@ -72,6 +74,7 @@ LineBasicMaterial(;kw...) = GenericMaterial(_type="LineBasicMaterial"; kw...)
     color::RGBA{Float32}=RGB(1., 1., 1.)
     size::Float32 = 0.002
     vertexColors::Int = 2
+    kwargs::Dict{String, Any} = Dict{String, Any}()
 end
 
 """
@@ -116,6 +119,7 @@ See also: [`FatLineGeometry`](@ref), [`FatLine`](@ref)
     dashSize::Float64 = 1.0
     gapSize::Float64 = 1.0
     worldUnits::Bool = false
+    kwargs::Dict{String, Any} = Dict{String, Any}()
 end
 
 """