Created isocontour.frag.glsl that renders points within the range of iso_tolerance from any iso_layers[i], where i is in the range of [0, iso_num_layers)
Added slider to adjust iso_tolerance
Added buttons to add and remove isocontour layers, as well as the ability to input up to 32 distinct layers
isocontour.frag.glslthat renders points within the range ofiso_tolerancefrom anyiso_layers[i], whereiis in the range of [0,iso_num_layers)iso_tolerance