Script27_ColorMeshWithAnalysisResults.lua

-- Lua example for Autodesk Netfabb 2021.0

-- Performs wall thickness test and feature detection on mesh parts and generates duplicates colored based on results.

system:setloggingtooglwindow(true)

local insertMeshesIntoTable
insertMeshesIntoTable = function(meshgroup, Outtable)
    for mesh_index = 0, meshgroup.meshcount - 1 do
        local traymesh = meshgroup:getmesh(mesh_index)
        table.insert(Outtable, traymesh)
    end
    for group_index = 0, meshgroup.groupcount - 1 do
        subgroup = meshgroup:getsubgroup(group_index)
        insertMeshesIntoTable(subgroup, Outtable)
    end
end

function colorMeshBasedOnArray(mesh, array, threshold, colortype)
    for j = 0, array.length - 1 do
        if tonumber(array:get(j)) < threshold then
            if colortype == "red" then
                mesh:colortriangle(j, 0, 0, 255, 255) -- index, B, G, R, A
            end

            if colortype == "blue" then
                mesh:colortriangle(j, 255, 0, 0, 255)
            end
        end
    end
end

-- Get root meshgroup from tray
root = tray.root

-- Collect meshes in the tray
meshes = {}
insertMeshesIntoTable(root, meshes)

-- Iterate over meshes in tray
for i, traymesh in pairs(meshes) do
    local luamesh = traymesh.mesh
    newMesh:applymatrix(traymesh.matrix)
    local array = system:createarray()
        -- required array type for wall thickness test; a plain Lua from array = {} is not enough

    -- Prepare mesh with semi-transparent gray for all its triangles
    newMesh:colortriangles(128, 128, 128, 128) -- B, G, R, A

    newMesh:wallthicknesstestwithoutput(0.51, 10, false, true, array)
        -- distance, surface fraction threshold for pass/fail, use coloring, use multicore, array to write to

    colorMeshBasedOnArray(newMesh, array, 0.51, "red")

    newMesh:featuredetection(0.51, 10, false, true, array)
        -- distance, surface fraction threshold for pass/fail, use coloring, use multicore, array to write to

    colorMeshBasedOnArray(newMesh, array, 0.51, "blue")
    newtraymesh = root:addmesh(newMesh, "0.51 mm threshold")
end