Script23_SliceCompare.lua
-- Lua example for Autodesk Netfabb 2020.2
-- Uses graph and histogram object to evaluate the similarity of two slice stacks
dialog_input = nil
temp_dir_input = nil
width_input = nil
height_input = nil
result_image = nil
diff_1_image = nil
diff_2_image = nil
histogram = nil
img_process = nil
current_slice_input = nil
current_equal_input = nil
function SelectZ()
-- select bar in graph and update image
histogram:selectatpixel(result_image.width, result_image.height, result_image.mousex, result_image.mousey)
local histogram_image = histogram:drawgraph(result_image.width, result_image.height)
result_image:setimage(histogram_image)
-- load slice diff
if histogram.selection >= 0 then
local selection = histogram.selection + 1
local temp = temp_dir_input.text
local diff = img_process:loadimage(temp .. "slice_diff_1_" .. selection .. ".png")
diff_1_image:setimage(diff)
diff = img_process:loadimage(temp .. "slice_diff_2_" .. selection .. ".png")
diff_2_image:setimage(diff)
dialog_input:rebuild()
current_slice_input.text = selection .. " #"
current_equal_input.text = string.format("%02.2f", histogram:getvalue(selection)) .. " %"
end
end
function DoCompare()
system:log("start slice compare")
-- get parameter
local temp = temp_dir_input.text
local slice_1 = slicelist:getslice(0)
local slice_2 = slicelist:getslice(1)
count = math.max(slice_1.layercount, slice_2.layercount)
local left = slice_1.minx
if slice_2.minx < left then
left = slice_2.minx
end
local right = slice_1.maxx
if slice_2.maxx > right then
right = slice_2.maxx
end
local top = slice_1.miny
if slice_2.miny < top then
top = slice_2.miny
end
local bottom = slice_1.maxy
if slice_2.maxy > bottom then
bottom = slice_2.maxy
end
local slice_width = right - left
local slice_height = bottom - top
local renderer_1 = slice_1:createimagerenderer(count, slice_1.layersize)
renderer_1.width = tonumber(width_input.text)
renderer_1.dpix = 25 * (renderer_1.width / slice_width)
renderer_1.height = tonumber(height_input.text)
renderer_1.dpiy = 25 * renderer_1.height / slice_height
renderer_1.left = -left * renderer_1.width / slice_width
renderer_1.top = -top * renderer_1.height / slice_height
renderer_1.writeclosedcontours = true
renderer_1.writeopencontours = true
renderer_1.fillclosedcontours = false
renderer_1.writehatches = true
local renderer_2 = slice_2:createimagerenderer(count, slice_2.layersize)
renderer_2.width = renderer_1.width
renderer_2.dpix = renderer_1.dpix
renderer_2.height = renderer_1.height
renderer_2.dpiy = renderer_1.dpiy
renderer_2.left = renderer_1.left
renderer_2.top = renderer_1.top
renderer_2.writeclosedcontours = renderer_1.writeclosedcontours
renderer_2.writeopencontours = renderer_1.fillclosedcontours
renderer_2.fillclosedcontours = renderer_1.fillclosedcontours
renderer_2.writehatches = renderer_1.writehatches
-- render into zip archive
system:log("render slices")
renderer_1:exportpng(temp .. "slice_1.zip")
renderer_2:exportpng(temp .. "slice_2.zip")
-- extract archives
local archive_1 = system:openzip(temp .. "slice_1.zip")
local archive_2 = system:openzip(temp .. "slice_2.zip")
-- do compare
system:log("compare images " .. math.min(slice_1.layercount - 1, slice_2.layercount - 1))
img_process = system:createimageprocessing()
histogram = system:createhistogram()
histogram.caption_x = "Slice Z value →"
histogram.caption_y = "Equal percentage →"
histogram.bar_count = 25
histogram.unit = "%"
histogram:setcustomminmax(0, 100)
system:showprogressdlg(true)
for i = 0, count - 1 do
-- axtract slice images from archive
archive_1:extractfile(archive_1:getfilename(i), temp .. "slice_1_" .. i .. ".png")
archive_2:extractfile(archive_2:getfilename(i), temp .. "slice_2_" .. i .. ".png")
-- load and prepare images
local image_1 = img_process:loadimage(temp .. "slice_1_" .. i .. ".png")
local image_2 = img_process:loadimage(temp .. "slice_2_" .. i .. ".png")
local equal_amount = image_1:comparebyfiltercolor(image_2, 0x000000)
histogram:addvalue(equal_amount)
local delta = image_1:clone()
delta:deltato(image_2)
delta:invert()
delta:colormask(delta, 0x000000, 0x0000FF)
--delta:colortotransparent(0xFFFFFF);
--delta:setcolor(0x0000FF);
image_1:imagemask(delta, 0xFFFFFF)
image_2:imagemask(delta, 0xFFFFFF)
image_1:saveto(temp .. "slice_diff_1_" .. i .. ".png")
image_2:saveto(temp .. "slice_diff_2_" .. i .. ".png")
system:setprogress(100 * i / count)
end
archive_1:closearchive()
archive_2:closearchive()
system:hideprogressdlg()
result_image.height = 350
local histogram_image = histogram:drawgraph(result_image.width, result_image.height)
histogram_image:saveto(temp .. "histogram.png")
-- show result
result_image:setimage(histogram_image)
result_image.onclick = "SelectZ"
dialog_input:rebuild()
end
function DoCancel()
system:log("slice compare canceled by user")
dialog_input:close(false)
end
function CompareSlices(slice_1, slice_2)
system:log("show slice compare options")
dialog_input = application:createdialog()
dialog_input.caption = "Slice Compare"
dialog_input.width = 1000
dialog_input.translatecaption = false
local groupbox = dialog_input:addgroupbox()
groupbox.caption = ""
groupbox.translate = false
local splitter = groupbox:addsplitter()
splitter:settoleft()
local groupbox_setting = splitter:addgroupbox()
groupbox_setting.caption = "Slice Compare Settings"
groupbox_setting.borderstyle = 1
groupbox_setting.horizontalpadding = 10
groupbox_setting.verticalpadding = 10
groupbox_setting.translate = false
local edit_width = 150
local edit = groupbox_setting:addedit()
edit.caption = "Input Slice 1"
edit.captionwidth = edit_width
edit.text = slice_1.name
edit.translate = false
edit.enabled = false
local edit = groupbox_setting:addedit()
edit.caption = "Input Slice 2"
edit.captionwidth = edit_width
edit.text = slice_2.name
edit.translate = false
edit.enabled = false
width_input = groupbox_setting:addedit()
width_input.caption = "Image width"
width_input.captionwidth = edit_width
width_input.text = "200"
width_input.translate = false
width_input.enabled = true
height_input = groupbox_setting:addedit()
height_input.caption = "Image height"
height_input.captionwidth = edit_width
height_input.text = "200"
height_input.translate = false
height_input.enabled = true
temp_dir_input = groupbox_setting:addedit()
temp_dir_input.caption = "Temporary Folder"
temp_dir_input.captionwidth = edit_width
local temp_file = system:gettempfilename(".tmp")
local temp_dir = system:extractfilepath(temp_file, true)
temp_dir_input.text = temp_dir
temp_dir_input.translate = false
temp_dir_input.enabled = true
current_slice_input = groupbox_setting:addedit()
current_slice_input.caption = "Current slice index"
current_slice_input.captionwidth = edit_width
current_slice_input.text = "--"
current_slice_input.translate = false
current_slice_input.enabled = false
current_equal_input = groupbox_setting:addedit()
current_equal_input.caption = "Current slice equality"
current_equal_input.captionwidth = edit_width
current_equal_input.text = "--"
current_equal_input.translate = false
current_equal_input.enabled = false
splitter:settoright()
result_image = splitter:addimage()
result_image.width = dialog_input.width / 2
result_image.height = 50
local groupbox_diff = dialog_input:addgroupbox()
groupbox_diff.caption = "Difference for Slice 1 and Slice 2"
groupbox_diff.translate = false
local splitter = groupbox_diff:addsplitter()
splitter:settoleft()
diff_1_image = splitter:addimage()
diff_1_image.width = dialog_input.width / 2
diff_1_image.height = 50
splitter:settoright()
diff_2_image = splitter:addimage()
diff_2_image.width = dialog_input.width / 2
diff_2_image.height = 50
local spacer = dialog_input:addspacer()
spacer.height = 20
local splitter = dialog_input:addsplitter()
splitter:settoleft()
local button = splitter:addbutton()
button.caption = "Compare"
button.translate = false
button.onclick = "DoCompare"
splitter:settoright()
button = splitter:addbutton()
button.caption = "Cancel"
button.translate = false
button.onclick = "DoCancel"
if dialog_input:show() then
return true
end
return false
end
system:setloggingtooglwindow(true)
system:log("Slice list has " .. slicelist.count .. " entries")
if slicelist.count > 1 then
CompareSlices(slicelist:getslice(0), slicelist:getslice(1))
else
system:log("slice compare failed, because slice list has not enough entries.")
system:messagedlg("Please select two slice stacks for comparison.")
end
