diff --git a/.gitignore b/.gitignore
index df1f9e2..b29a758 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,135 +1,135 @@
-# Byte-compiled / optimized / DLL files
-__pycache__/
-*.py[cod]
-*$py.class
-
-# C extensions
-*.so
-
-# Distribution / packaging
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-pip-wheel-metadata/
-share/python-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
-
-# PyInstaller
-# Usually these files are written by a python script from a template
-# before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
-# Installer logs
-pip-log.txt
-pip-delete-this-directory.txt
-
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.nox/
-.coverage
-.coverage.*
-.cache
-nosetests.xml
-coverage.xml
-*.cover
-*.py,cover
-.hypothesis/
-.pytest_cache/
-
-# Translations
-*.mo
-*.pot
-
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-db.sqlite3-journal
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
-# IPython
-profile_default/
-ipython_config.py
-
-# pyenv
-.python-version
-
-# pipenv
-# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
-# However, in case of collaboration, if having platform-specific dependencies or dependencies
-# having no cross-platform support, pipenv may install dependencies that don't work, or not
-# install all needed dependencies.
-#Pipfile.lock
-
-# PEP 582; used by e.g. github.com/David-OConnor/pyflow
-__pypackages__/
-
-# Celery stuff
-celerybeat-schedule
-celerybeat.pid
-
-# SageMath parsed files
-*.sage.py
-
-# Environments
-.env
-.venv
-env/
-venv/
-ENV/
-env.bak/
-venv.bak/
-
-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
-# mypy
-.mypy_cache/
-.dmypy.json
-dmypy.json
-
-# Pyre type checker
-.pyre/
-
-# Bundle Script
-*.bat
-
-# Pycharm
-.idea/
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+# Usually these files are written by a python script from a template
+# before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+# However, in case of collaboration, if having platform-specific dependencies or dependencies
+# having no cross-platform support, pipenv may install dependencies that don't work, or not
+# install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# Bundle Script
+*.bat
+
+# Pycharm
+.idea/
diff --git a/LICENSE b/LICENSE
index f288702..3877ae0 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,674 +1,674 @@
- GNU GENERAL PUBLIC LICENSE
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+ (at your option) any later version.
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+Also add information on how to contact you by electronic and paper mail.
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+.
diff --git a/main.py b/main.py
index 3f574bb..eeba431 100644
--- a/main.py
+++ b/main.py
@@ -1,553 +1,561 @@
-import os
-import sys
-from copy import copy, deepcopy
-from math import sqrt, ceil, floor
-import numpy as np
-import tkinter as tk
-from tkinter import filedialog, LEFT, X
-from rectpack import newPacker, float2dec, PackingMode, PackingBin, SORT_NONE
-from ctypes import windll
-
-GWL_EXSTYLE = -20
-WS_EX_APPWINDOW = 0x00040000
-WS_EX_TOOLWINDOW = 0x00000080
-
-import trimesh
-from trimesh.path.entities import Text
-from trimesh.path.exchange.export import export_path
-from trimesh.path.creation import rectangle
-from trimesh.transformations import scale_matrix
-
-# declare "globals" for use across functions
-mesh = None
-unit = None
-sections = None
-pdfSections = None
-combined = None
-bins = None
-blocked = False
-saveBinsButton = None
-showKeyButton = None
-exportHeightEntry = None
-exportWidthEntry = None
-exportKerfEntry = None
-lastW = None
-lastH = None
-lastK = None
-resultWinHeight = None
-resultWinWidth = None
-
-
-# shows dimensions and layer count in main gui window
-# updates live when model has been selected
-def calcDim(args=None):
- scale = 1
-
- # if scale is number set scale, else reset text entry
- try:
- scale = float(scaleFactorEntry.get())
- except ValueError:
- scaleFactorEntry.config(text="1")
-
- # get and display scaled bounds
- dimensions = mesh.bounds
-
- dimensionsAfterLabel.config(text="Scaled Dimensions (" + unit + ")")
- xAfterlabel.config(text="x: " + str(round((dimensions[1][0] - dimensions[0][0]) * scale, 2)))
- yAfterlabel.config(text="y: " + str(round((dimensions[1][1] - dimensions[0][1]) * scale, 2)))
- zAfterlabel.config(text="z: " + str(round((dimensions[1][2] - dimensions[0][2]) * scale, 2)))
-
- # get and display number of layers
- try:
- thickness = float(layerThicknessEntry.get())
- if thickness == 0:
- numLayersLabel.config(text="Layers: N/A")
- else:
- numLayersLabel.config(
- text="Layers: " + str(ceil(((dimensions[1][2] - dimensions[0][2]) * scale) / thickness)))
- except ValueError:
- numLayersLabel.config(text="Layers: N/A")
-
-
-# opens 3D model and fills gui elements with appropriate info (base unit, model name, model dimensions, etc)
-def getFile():
- # maps base unit result to abbreviation
- unitDict = {
- "millimeters": "mm",
- "inches": "in"
- }
-
- # ask for file
- filename = tk.filedialog.askopenfilename(initialdir="/",
- title="Select a File",
- filetypes=((".stl files", "*.stl"), ("all files", ".*")))
-
- # add model file path to gui
- modelEntry.config(text=filename)
-
- # load the mesh from filename
- global mesh, unit
- mesh = trimesh.load_mesh(filename)
-
- # get base unit, add to gui
- unit = trimesh.units.units_from_metadata(mesh, guess=True)
- try:
- unit = unitDict[unit]
- except KeyError:
- pass
-
- layerThicknessLabel.config(text="Layer Thickness (" + unit + "): ")
-
- # add model dimensions to gui
- calcDim()
-
- # now that model is open, listen for changes in relevant text entries to update dimensions shown in gui
- scaleFactorEntry.bind('', calcDim)
- layerThicknessEntry.bind('', calcDim)
-
-
-def focus_results():
- # bring results window forward
- if results is not None and 'normal' == results.state():
- results.focus_set()
- results.geometry("")
-
- return
-
-
-# run slices, show export window
-def go():
- global combined, sections, results, saveBinsButton, showKeyButton, showKey, exportHeightEntry, exportWidthEntry, exportKerfEntry, resultWinWidth, resultWinHeight
-
- focus_results()
-
- # scale model according to text entry in main window
- mesh.apply_transform(scale_matrix(float(scaleFactorEntry.get()), [0, 0, 0]))
-
- # slice the mesh into evenly spaced chunks along z
- # this takes the (2,3) bounding box and slices it into [minz, maxz]
- z_extents = mesh.bounds[:, 2]
- # slice every x (text entry) model units (eg, inches)
- z_levels = np.arange(*z_extents, step=float(layerThicknessEntry.get()))
-
- # create cross section outlines
- sections = mesh.section_multiplane(plane_origin=mesh.bounds[0],
- plane_normal=[0, 0, 1],
- heights=z_levels)
-
- # in the case that slice did not intersect with model, remove section
- sections = list(filter(lambda element: element is not None, sections))
-
- combined = np.sum(sections)
-
- # GUI stuff
- results = tk.Toplevel(root)
- results.title("Results")
- results.protocol("WM_DELETE_WINDOW", clearResults)
- results.resizable(0, 0)
-
- buttonFrame = tk.Frame(results)
- viewFrame = tk.Frame(buttonFrame)
- sectionsButton = tk.Button(viewFrame, text="View Layers", command=plot)
- modelButton = tk.Button(viewFrame, text="View Model", command=model)
- exportButton = tk.Button(buttonFrame, text="Export Layers to SVG", command=export)
-
- heightFrame = tk.Frame(results)
- exportHeight = tk.Label(heightFrame, text="Height (" + unit + "): ")
- exportHeightEntry = tk.Entry(heightFrame, width=10)
-
- widthFrame = tk.Frame(results)
- exportWidth = tk.Label(widthFrame, text="Width (" + unit + "): ")
- exportWidthEntry = tk.Entry(widthFrame, width=10)
-
- kerfFrame = tk.Frame(results)
- exportKerf = tk.Label(kerfFrame, text="Kerf (" + unit + "): ")
- exportKerfEntry = tk.Entry(kerfFrame, width=10)
-
- exportFileButton = tk.Button(results, text="Prepare Cuts", command=(
- lambda *args: exportFile(float(exportHeightEntry.get()), float(exportWidthEntry.get()),
- float(exportKerfEntry.get()))))
-
- exportFrame = tk.Frame(results)
- saveBinsButton = tk.Button(exportFrame, text="Export Cut Files", command=saveFiles)
- showKeyButton = tk.Checkbutton(exportFrame, text='Key?', variable=showKey, onvalue=True, offvalue=False)
-
- buttonFrame.pack(pady=10, padx=5)
- viewFrame.pack(pady=5)
- sectionsButton.pack(side=LEFT, padx=1)
- modelButton.pack(side=LEFT, padx=1)
- exportButton.pack()
-
- heightFrame.pack()
- exportHeight.pack(side=LEFT)
- exportHeightEntry.pack(side=LEFT)
- widthFrame.pack()
- exportWidth.pack(side=LEFT)
- exportWidthEntry.pack(side=LEFT)
- kerfFrame.pack()
- exportKerf.pack(side=LEFT)
- exportKerfEntry.pack(side=LEFT)
-
- exportFileButton.pack(padx=1)
- exportFrame.pack(pady=5, padx=5)
-
- results.update()
- results.geometry(f'+{root.winfo_rootx()+int((root.winfo_width()-results.winfo_width())/2)}+{root.winfo_rooty()+int((root.winfo_height()-results.winfo_height())/2)}')
-
- resultWinWidth = results.winfo_width()
- resultWinHeight = results.winfo_height()
- results.mainloop()
-
-
-# empty results, hide window so process can be run again
-def clearResults():
- global results
-
- results.destroy()
- results = None
-
-
-# show top-down view of stacked layers
-def plot():
- global blocked
-
- if not blocked:
- blocked = True
- # summing the array of Path2D objects will put all of the curves
- # into one Path2D object, which can be plotted easily
- combined.show()
-
- blocked = False
-
-
-# shows unsliced model
-def model():
- global blocked
-
- if not blocked:
- blocked = True
-
- scene = mesh.scene()
- camera = scene.camera
- camera.resolution = (640, 520)
- scene.base_frame = "Model"
- scene.camera = camera
- scene.show()
-
- blocked = False
-
-
-# save layer svg's to selected directory
-def export():
- global blocked
-
- if not blocked:
- blocked = True
-
- # ask for directory
- directory = filedialog.askdirectory()
-
- for i in range(len(sections)):
- export_path(sections[i], file_type="svg", file_obj=directory + "/layer" + str(i) + ".svg")
-
- focus_results()
-
- blocked = False
-
-
-def checkPrepared(args=None):
- shouldRemove = False
- try:
- shouldRemove = float(exportWidthEntry.get()) != lastW or float(exportHeightEntry.get()) != lastH or float(exportKerfEntry.get()) != lastK
- except ValueError:
- shouldRemove = True
- finally:
- if shouldRemove:
- saveBinsButton.pack_forget()
- showKeyButton.pack_forget()
-
- results.geometry(f"{resultWinHeight}x{resultWinHeight}")
- else:
- if not saveBinsButton.winfo_ismapped():
- results.geometry("")
- saveBinsButton.pack(side=LEFT, padx=1)
- showKeyButton.pack(side=LEFT)
-
-# prepares bins for export, performs bin packing
-# arguments: bin height, bin width, kerf
-def exportFile(h, w, k):
- global blocked, bins, pdfSections, exportWidthEntry, exportHeightEntry, exportKerfEntry, lastW, lastH, lastK
-
- # if other window is not open
- if not blocked:
- blocked = True
-
- lastW = w
- lastH = h
- lastK = k
-
- # prepare packers, one with rotation enabled, one disabled, results will be compared later
- packer = newPacker(mode=PackingMode.Offline, bin_algo=PackingBin.Global, sort_algo=SORT_NONE, rotation=False)
- rotPacker = newPacker(mode=PackingMode.Offline, bin_algo=PackingBin.Global, sort_algo=SORT_NONE, rotation=True)
-
- # add rectangles to packers
- for i in range(len(sections)):
- dimensions = sections[i].bounds
-
- sect = deepcopy(sections[i])
- sect.apply_translation((-dimensions[0][0], -dimensions[0][1]))
-
- dimensions = sect.bounds
-
- # set dimensions to bounds plus kerf
- r = (float2dec((dimensions[1][0]) + k, 5), float2dec((dimensions[1][1]) + k, 5))
- packer.add_rect(*r, i)
- rotPacker.add_rect(*r, i)
-
- # add bins to packers
- packer.add_bin(float2dec(w, 5), float2dec(h, 5), count=float("inf"))
- rotPacker.add_bin(float2dec(w, 5), float2dec(h, 5), count=float("inf"))
-
- # run pack
- packer.pack()
- rotPacker.pack()
-
- # init var to largest bin area of packers, will be overridden to find minimum area used, minimizing material wastage
- leastBinSum = w * h * max(len(packer), len(rotPacker))
- leastPacker = packer
- # loop through packers
- for pack in (packer, rotPacker):
- binSum = 0
- # loop through packed bins
- for i in range(len(pack)):
- leastX = w
- leastY = h
- greatestX = 0
- greatestY = 0
- # loop through packed rectangles
- for rect in pack.rect_list():
- # if rectangles is in bin
- if rect[0] == i:
- # check to see if rectangle is closer to the top corner than the previous closest
- if rect[1] < leastX:
- leastX = rect[1]
- if rect[2] < leastY:
- leastY = rect[2]
- # check to see if rectangle is closer to the bottom corner than the previous closest
- if rect[3] + rect[1] > greatestX:
- greatestX = rect[3] + rect[1]
- if rect[4] + rect[2] > greatestY:
- greatestY = rect[4] + rect[2]
- # add used area of bin to total
- binSum += ((greatestX - leastX) * (greatestY - leastY))
- # override packer least used area if needed
- if binSum < leastBinSum:
- leastBinSum = binSum
- leastPacker = pack
-
- # use algo that resulted in the least wastage
- packer = leastPacker
- bins = list()
- displaySections = list()
- pdfSections = list()
- # create visual representation of bins for display
- for i in range(len(packer)):
- bins.append(list())
-
- rowColLen = ceil(sqrt(len(packer)))
- row = floor(i / rowColLen)
- col = i % rowColLen
-
- displayBin = rectangle(((0, 0), (w, h)))
- displayBin.apply_translation(
- ((packer[i].width * 11 / 10) * col, -((packer[i].height * 11 / 10) * row + packer[i].height)))
-
- displaySections.append(displayBin)
- pdfSections.append(displayBin)
-
- # add rectangles to their designated bins
- for rect in packer.rect_list():
- section = deepcopy(sections[rect[5]])
- bin = rect[0]
-
- # find position of bin for display purposes (bins displayed in grid, find row & col)
- rowColLen = ceil(sqrt(len(packer)))
- row = floor((bin) / rowColLen)
- col = bin % rowColLen
-
- # check if rectangle has rotated, if so, rotate
- dimensions = section.bounds
- if rect[3] != float2dec((dimensions[1][0]) + k, 5) and rect[4] != float2dec((dimensions[1][1]) + k, 5):
- section.apply_transform(((0, -1, 0), (1, 0, 0), (0, 0, 1)))
- dimensions = section.bounds
- section.apply_translation((-dimensions[0][0], -dimensions[0][1]))
-
- # find x, y translation to move rectangle to designated spot in bin
- section.apply_translation((rect[1] + float2dec(k / 2, 5), rect[2] + float2dec(k / 2, 5)))
- bins[bin].append(section)
-
- # find x, y translation to offset display rectangle to the proper bin in the bin grid
- displaySection = copy(section)
- displaySection.apply_translation(
- ((packer[bin].width * 11 / 10) * col, -((packer[bin].height * 11 / 10) * row + packer[bin].height)))
- displaySections.append(displaySection)
-
- # for display only, add rectangle bounding box, for visualization of packing performance
- displayRect = rectangle(((displaySection.bounds[0][0], displaySection.bounds[0][1]),
- (displaySection.bounds[1][0], displaySection.bounds[1][1])))
- displaySections.append(displayRect)
-
- # also add bounding box to key display, real shape outline not added for readability
- pdfRect = copy(displayRect)
- pdfRect.entities = np.append(pdfRect.entities, Text(0, str(rect[5] + 1), align=('left', 'bottom')))
- pdfSections.append(pdfRect)
-
- # show packed rectangles and bins in human understandable format
- displayCombine = np.sum(displaySections)
- displayCombine.show()
-
- # now that export has been prepared, show save buttons
- saveBinsButton.pack(side=LEFT, padx=1)
- showKeyButton.pack(side=LEFT)
-
- exportWidthEntry.bind('', checkPrepared)
- exportHeightEntry.bind('', checkPrepared)
- exportKerfEntry.bind('', checkPrepared)
-
- focus_results()
-
- blocked = False
-
-
-# save bins and show key
-def saveFiles():
- global blocked
-
- if not blocked:
- blocked = True
-
- # ask for directory selection
- directory = filedialog.askdirectory()
-
- # export bins
- for i in range(len(bins)):
- exportCombine = np.sum(bins[i])
- export_path(exportCombine, file_type="svg", file_obj=directory + "/bin" + str(i) + ".svg")
-
- focus_results()
-
- # show key
- if (showKey.get()):
- pdfCombine = np.sum(pdfSections)
- pdfCombine.show()
-
- blocked = False
-
-
-# forces window to appear in taskbar, windows specific
-def set_appwindow(root):
- hwnd = windll.user32.GetParent(root.winfo_id())
- style = windll.user32.GetWindowLongW(hwnd, GWL_EXSTYLE)
- style = style & ~WS_EX_TOOLWINDOW
- style = style | WS_EX_APPWINDOW
- res = windll.user32.SetWindowLongW(hwnd, GWL_EXSTYLE, style)
- # re-assert the new window style
- root.wm_withdraw()
- root.after(10, lambda: root.wm_deiconify())
-
-
-# for newer versions of pyinstaller, needed to retrieve icon image
-def resource_path(relative_path):
- """ Get absolute path to resource, works for dev and for PyInstaller """
- try:
- # PyInstaller creates a temp folder and stores path in _MEIPASS
- base_path = sys._MEIPASS
- except Exception:
- base_path = os.path.abspath(".")
-
- return os.path.join(base_path, relative_path)
-
-
-results = None
-
-# create base window
-root = tk.Tk()
-root.title("3DSlicer")
-root.option_add('*Font', '19')
-root.attributes("-toolwindow", 1)
-p1 = tk.PhotoImage(file=resource_path('icon.png'))
-# Icon set for program window
-root.iconphoto(True, p1)
-root.resizable(0, 0)
-
-# clear children of base window
-clearList = root.winfo_children()
-
-for child in clearList:
- child.destroy()
-
-# set default state of key checkbox
-showKey = tk.BooleanVar()
-
-# generate window
-menubar = tk.Menu(root)
-filemenu = tk.Menu(menubar, tearoff=0)
-
-# TODO: filemenu.add_command(label="About", command=about)
-filemenu.add_command(label="Exit", command=root.destroy)
-menubar.add_cascade(label="File", menu=filemenu)
-
-modelFrame = tk.Frame(root)
-topModelFrame = tk.Frame(modelFrame)
-modelLabel = tk.Label(topModelFrame, text="Model: ")
-modelEntry = tk.Label(topModelFrame, text="N/A")
-modelBrowse = tk.Button(modelFrame, text="Browse", command=getFile)
-
-entriesFrame = tk.Frame(root)
-layerEntryFrame = tk.Frame(entriesFrame)
-layerThicknessLabel = tk.Label(layerEntryFrame, text="Layer Thickness (N/A): ")
-layerThicknessEntry = tk.Entry(layerEntryFrame, width=5)
-
-scaleEntryFrame = tk.Frame(entriesFrame)
-scaleFactorLabel = tk.Label(scaleEntryFrame, text="Model Scale Factor: ")
-scaleFactorEntry = tk.Entry(scaleEntryFrame, width=5)
-scaleFactorEntry.insert(0, "1")
-
-numbersFrame = tk.Frame(root)
-dimensionsAfterLabel = tk.Label(numbersFrame, text="Scaled Dimensions (N/A)")
-xAfterlabel = tk.Label(numbersFrame, text="x: N/A")
-yAfterlabel = tk.Label(numbersFrame, text="y: N/A")
-zAfterlabel = tk.Label(numbersFrame, text="z: N/A")
-
-numLayersLabel = tk.Label(root, text="Layers: N/A")
-
-goButton = tk.Button(root, text="Go", command=go)
-
-root.config(menu=menubar)
-
-modelFrame.pack(pady=10)
-topModelFrame.pack()
-modelLabel.pack(side=LEFT)
-modelEntry.pack(side=LEFT)
-modelBrowse.pack()
-
-entriesFrame.pack()
-numbersFrame.pack(pady=10)
-layerEntryFrame.pack()
-scaleEntryFrame.pack(fill=X)
-scaleFactorLabel.pack(side=LEFT)
-scaleFactorEntry.pack(side=LEFT)
-layerThicknessLabel.pack(side=LEFT)
-layerThicknessEntry.pack(side=LEFT)
-
-dimensionsAfterLabel.pack()
-xAfterlabel.pack()
-yAfterlabel.pack()
-zAfterlabel.pack()
-
-numLayersLabel.pack()
-
-goButton.pack(ipadx=10, pady=5)
-
-root.after(10, lambda: set_appwindow(root))
-root.mainloop()
+import os
+import sys
+from copy import copy, deepcopy
+from math import sqrt, ceil, floor
+import numpy as np
+import tkinter as tk
+from tkinter import filedialog, LEFT, X
+from rectpack import newPacker, float2dec, PackingMode, PackingBin, SORT_NONE
+from ctypes import windll
+
+GWL_EXSTYLE = -20
+WS_EX_APPWINDOW = 0x00040000
+WS_EX_TOOLWINDOW = 0x00000080
+
+import trimesh
+from trimesh.path.entities import Text
+from trimesh.path.exchange.export import export_path
+from trimesh.path.creation import rectangle
+from trimesh.transformations import scale_matrix
+
+# declare "globals" for use across functions
+mesh = None
+unit = None
+sections = None
+pdfSections = None
+combined = None
+bins = None
+blocked = False
+exportFrame = None
+saveBinsButton = None
+showKeyButton = None
+exportHeightEntry = None
+exportWidthEntry = None
+exportKerfEntry = None
+lastW = None
+lastH = None
+lastK = None
+resultWinHeight = None
+resultWinWidth = None
+
+
+# shows dimensions and layer count in main gui window
+# updates live when model has been selected
+def calcDim(args=None):
+ scale = 1
+
+ # if scale is number set scale, else reset text entry
+ try:
+ scale = float(scaleFactorEntry.get())
+ except ValueError:
+ scaleFactorEntry.config(text="1")
+
+ # get and display scaled bounds
+ dimensions = mesh.bounds
+
+ dimensionsAfterLabel.config(text="Scaled Dimensions (" + unit + ")")
+ xAfterlabel.config(text="x: " + str(round((dimensions[1][0] - dimensions[0][0]) * scale, 2)))
+ yAfterlabel.config(text="y: " + str(round((dimensions[1][1] - dimensions[0][1]) * scale, 2)))
+ zAfterlabel.config(text="z: " + str(round((dimensions[1][2] - dimensions[0][2]) * scale, 2)))
+
+ # get and display number of layers
+ try:
+ thickness = float(layerThicknessEntry.get())
+ if thickness == 0:
+ numLayersLabel.config(text="Layers: N/A")
+ else:
+ numLayersLabel.config(
+ text="Layers: " + str(ceil(((dimensions[1][2] - dimensions[0][2]) * scale) / thickness)))
+ except ValueError:
+ numLayersLabel.config(text="Layers: N/A")
+
+
+# opens 3D model and fills gui elements with appropriate info (base unit, model name, model dimensions, etc)
+def getFile():
+ # maps base unit result to abbreviation
+ unitDict = {
+ "millimeters": "mm",
+ "inches": "in"
+ }
+
+ # ask for file
+ filename = tk.filedialog.askopenfilename(initialdir="/",
+ title="Select a File",
+ filetypes=((".stl files", "*.stl"), ("all files", ".*")))
+
+ # add model file path to gui
+ modelEntry.config(text=filename)
+
+ # load the mesh from filename
+ global mesh, unit
+ mesh = trimesh.load_mesh(filename)
+
+ # get base unit, add to gui
+ unit = trimesh.units.units_from_metadata(mesh, guess=True)
+ try:
+ unit = unitDict[unit]
+ except KeyError:
+ pass
+
+ layerThicknessLabel.config(text="Layer Thickness (" + unit + "): ")
+
+ # add model dimensions to gui
+ calcDim()
+
+ # now that model is open, listen for changes in relevant text entries to update dimensions shown in gui
+ scaleFactorEntry.bind('', calcDim)
+ layerThicknessEntry.bind('', calcDim)
+
+
+def focus_results():
+ # bring results window forward
+ if results is not None and 'normal' == results.state():
+ results.focus_set()
+
+ return
+
+
+# run slices, show export window
+def go():
+ global combined, sections, results, exportFrame, showKeyButton, saveBinsButton, exportHeightEntry, exportWidthEntry, exportKerfEntry, resultWinWidth, resultWinHeight
+
+ focus_results()
+
+ # scale model according to text entry in main window
+ mesh.apply_transform(scale_matrix(float(scaleFactorEntry.get()), [0, 0, 0]))
+
+ # slice the mesh into evenly spaced chunks along z
+ # this takes the (2,3) bounding box and slices it into [minz, maxz]
+ z_extents = mesh.bounds[:, 2]
+ # slice every x (text entry) model units (eg, inches)
+ z_levels = np.arange(*z_extents, step=float(layerThicknessEntry.get()))
+
+ # create cross section outlines
+ sections = mesh.section_multiplane(plane_origin=mesh.bounds[0],
+ plane_normal=[0, 0, 1],
+ heights=z_levels)
+
+ # in the case that slice did not intersect with model, remove section
+ sections = list(filter(lambda element: element is not None, sections))
+
+ combined = np.sum(sections)
+
+ # GUI stuff
+ results = tk.Toplevel(root)
+ results.title("Results")
+ results.protocol("WM_DELETE_WINDOW", clearResults)
+ results.resizable(0, 0)
+
+ buttonFrame = tk.Frame(results)
+ viewFrame = tk.Frame(buttonFrame)
+ sectionsButton = tk.Button(viewFrame, text="View Layers", command=plot)
+ modelButton = tk.Button(viewFrame, text="View Model", command=model)
+ exportButton = tk.Button(buttonFrame, text="Export Layers to SVG", command=export)
+
+ heightFrame = tk.Frame(results)
+ exportHeight = tk.Label(heightFrame, text="Height (" + unit + "): ")
+ exportHeightEntry = tk.Entry(heightFrame, width=10)
+
+ widthFrame = tk.Frame(results)
+ exportWidth = tk.Label(widthFrame, text="Width (" + unit + "): ")
+ exportWidthEntry = tk.Entry(widthFrame, width=10)
+
+ kerfFrame = tk.Frame(results)
+ exportKerf = tk.Label(kerfFrame, text="Kerf (" + unit + "): ")
+ exportKerfEntry = tk.Entry(kerfFrame, width=10)
+
+ exportFileButton = tk.Button(results, text="Prepare Cuts", command=(
+ lambda *args: exportFile(float(exportHeightEntry.get()), float(exportWidthEntry.get()),
+ float(exportKerfEntry.get()))))
+
+ exportFrame = tk.Frame(results)
+ saveBinsButton = tk.Button(exportFrame, text="Export Cut Files", command=saveFiles)
+ showKeyButton = tk.Button(exportFrame, text='View Key', command=showKey)
+
+ buttonFrame.pack(pady=10, padx=5)
+ viewFrame.pack(pady=5)
+ sectionsButton.pack(side=LEFT, padx=1)
+ modelButton.pack(side=LEFT, padx=1)
+ exportButton.pack()
+
+ heightFrame.pack()
+ exportHeight.pack(side=LEFT)
+ exportHeightEntry.pack(side=LEFT)
+ widthFrame.pack()
+ exportWidth.pack(side=LEFT)
+ exportWidthEntry.pack(side=LEFT)
+ kerfFrame.pack()
+ exportKerf.pack(side=LEFT)
+ exportKerfEntry.pack(side=LEFT)
+
+ exportFileButton.pack(pady=(0, 5), padx=1)
+
+ saveBinsButton.pack(side=LEFT, padx=1)
+ showKeyButton.pack(side=LEFT, padx=1)
+
+ results.update()
+ results.geometry(
+ f'+{root.winfo_rootx() + int((root.winfo_width() - results.winfo_width()) / 2)}+{root.winfo_rooty() + int((root.winfo_height() - results.winfo_height()) / 2)}')
+
+ resultWinWidth = results.winfo_width()
+ resultWinHeight = results.winfo_height()
+ results.mainloop()
+
+
+# empty results, hide window so process can be run again
+def clearResults():
+ global results
+
+ results.destroy()
+ results = None
+
+
+# show top-down view of stacked layers
+def plot():
+ global blocked
+
+ if not blocked:
+ blocked = True
+ # summing the array of Path2D objects will put all of the curves
+ # into one Path2D object, which can be plotted easily
+ combined.show()
+
+ blocked = False
+
+
+# shows unsliced model
+def model():
+ global blocked
+
+ if not blocked:
+ blocked = True
+
+ scene = mesh.scene()
+ camera = scene.camera
+ camera.resolution = (640, 520)
+ scene.base_frame = "Model"
+ scene.camera = camera
+ scene.show()
+
+ blocked = False
+
+
+# save layer svg's to selected directory
+def export():
+ global blocked
+
+ if not blocked:
+ blocked = True
+
+ # ask for directory
+ directory = filedialog.askdirectory()
+
+ for i in range(len(sections)):
+ export_path(sections[i], file_type="svg", file_obj=directory + "/layer" + str(i) + ".svg")
+
+ focus_results()
+
+ blocked = False
+
+
+def checkPrepared(args=None):
+ shouldRemove = False
+ try:
+ shouldRemove = float(exportWidthEntry.get()) != lastW or float(exportHeightEntry.get()) != lastH or float(
+ exportKerfEntry.get()) != lastK
+ except ValueError:
+ shouldRemove = True
+ finally:
+ if shouldRemove:
+ exportFrame.pack_forget()
+ else:
+ if not exportFrame.winfo_ismapped():
+ exportFrame.pack(pady=(0, 5), padx=5)
+
+
+# prepares bins for export, performs bin packing
+# arguments: bin height, bin width, kerf
+def exportFile(h, w, k):
+ global blocked, bins, pdfSections, exportWidthEntry, exportHeightEntry, exportKerfEntry, lastW, lastH, lastK
+
+ # if other window is not open
+ if not blocked:
+ blocked = True
+
+ lastW = w
+ lastH = h
+ lastK = k
+
+ # prepare packers, one with rotation enabled, one disabled, results will be compared later
+ packer = newPacker(mode=PackingMode.Offline, bin_algo=PackingBin.Global, sort_algo=SORT_NONE, rotation=False)
+ rotPacker = newPacker(mode=PackingMode.Offline, bin_algo=PackingBin.Global, sort_algo=SORT_NONE, rotation=True)
+
+ # add rectangles to packers
+ for i in range(len(sections)):
+ dimensions = sections[i].bounds
+
+ sect = deepcopy(sections[i])
+ sect.apply_translation((-dimensions[0][0], -dimensions[0][1]))
+
+ dimensions = sect.bounds
+
+ # set dimensions to bounds plus kerf
+ r = (float2dec((dimensions[1][0]) + k, 5), float2dec((dimensions[1][1]) + k, 5))
+ packer.add_rect(*r, i)
+ rotPacker.add_rect(*r, i)
+
+ # add bins to packers
+ packer.add_bin(float2dec(w, 5), float2dec(h, 5), count=float("inf"))
+ rotPacker.add_bin(float2dec(w, 5), float2dec(h, 5), count=float("inf"))
+
+ # run pack
+ packer.pack()
+ rotPacker.pack()
+
+ # init var to largest bin area of packers, will be overridden to find minimum area used, minimizing material wastage
+ leastBinSum = w * h * max(len(packer), len(rotPacker))
+ leastPacker = packer
+ # loop through packers
+ for pack in (packer, rotPacker):
+ binSum = 0
+ # loop through packed bins
+ for i in range(len(pack)):
+ leastX = w
+ leastY = h
+ greatestX = 0
+ greatestY = 0
+ # loop through packed rectangles
+ for rect in pack.rect_list():
+ # if rectangles is in bin
+ if rect[0] == i:
+ # check to see if rectangle is closer to the top corner than the previous closest
+ if rect[1] < leastX:
+ leastX = rect[1]
+ if rect[2] < leastY:
+ leastY = rect[2]
+ # check to see if rectangle is closer to the bottom corner than the previous closest
+ if rect[3] + rect[1] > greatestX:
+ greatestX = rect[3] + rect[1]
+ if rect[4] + rect[2] > greatestY:
+ greatestY = rect[4] + rect[2]
+ # add used area of bin to total
+ binSum += ((greatestX - leastX) * (greatestY - leastY))
+ # override packer least used area if needed
+ if binSum < leastBinSum:
+ leastBinSum = binSum
+ leastPacker = pack
+
+ # use algo that resulted in the least wastage
+ packer = leastPacker
+ bins = list()
+ displaySections = list()
+ pdfSections = list()
+ # create visual representation of bins for display
+ for i in range(len(packer)):
+ bins.append(list())
+
+ rowColLen = ceil(sqrt(len(packer)))
+ row = floor(i / rowColLen)
+ col = i % rowColLen
+
+ displayBin = rectangle(((0, 0), (w, h)))
+ displayBin.apply_translation(
+ ((packer[i].width * 11 / 10) * col, -((packer[i].height * 11 / 10) * row + packer[i].height)))
+
+ displaySections.append(displayBin)
+ pdfSections.append(displayBin)
+
+ # add rectangles to their designated bins
+ for rect in packer.rect_list():
+ section = deepcopy(sections[rect[5]])
+ bin = rect[0]
+
+ # find position of bin for display purposes (bins displayed in grid, find row & col)
+ rowColLen = ceil(sqrt(len(packer)))
+ row = floor((bin) / rowColLen)
+ col = bin % rowColLen
+
+ # check if rectangle has rotated, if so, rotate
+ dimensions = section.bounds
+ if rect[3] != float2dec((dimensions[1][0]) + k, 5) and rect[4] != float2dec((dimensions[1][1]) + k, 5):
+ section.apply_transform(((0, -1, 0), (1, 0, 0), (0, 0, 1)))
+ dimensions = section.bounds
+ section.apply_translation((-dimensions[0][0], -dimensions[0][1]))
+
+ # find x, y translation to move rectangle to designated spot in bin
+ section.apply_translation((rect[1] + float2dec(k / 2, 5), rect[2] + float2dec(k / 2, 5)))
+ bins[bin].append(section)
+
+ # find x, y translation to offset display rectangle to the proper bin in the bin grid
+ displaySection = copy(section)
+ displaySection.apply_translation(
+ ((packer[bin].width * 11 / 10) * col, -((packer[bin].height * 11 / 10) * row + packer[bin].height)))
+ displaySections.append(displaySection)
+
+ # for display only, add rectangle bounding box, for visualization of packing performance
+ displayRect = rectangle(((displaySection.bounds[0][0], displaySection.bounds[0][1]),
+ (displaySection.bounds[1][0], displaySection.bounds[1][1])))
+ displaySections.append(displayRect)
+
+ # also add bounding box to key display, real shape outline not added for readability
+ pdfRect = copy(displayRect)
+ pdfRect.entities = np.append(pdfRect.entities, Text(0, str(rect[5] + 1), align=('left', 'bottom')))
+ pdfSections.append(pdfRect)
+
+ # show packed rectangles and bins in human understandable format
+ displayCombine = np.sum(displaySections)
+ displayCombine.show()
+
+ # now that export has been prepared, show save buttons
+ exportFrame.pack(pady=(0, 5), padx=5)
+
+ exportWidthEntry.bind('', checkPrepared)
+ exportHeightEntry.bind('', checkPrepared)
+ exportKerfEntry.bind('', checkPrepared)
+
+ focus_results()
+
+ blocked = False
+
+
+# show puzzle key
+def showKey():
+ print("hi")
+ global blocked
+
+ if not blocked:
+ blocked = True
+
+ pdfCombine = np.sum(pdfSections)
+ pdfCombine.show()
+
+ blocked = False
+
+
+# save bins
+def saveFiles():
+ global blocked
+
+ if not blocked:
+ blocked = True
+
+ # ask for directory selection
+ directory = filedialog.askdirectory()
+
+ # export bins
+ for i in range(len(bins)):
+ exportCombine = np.sum(bins[i])
+ export_path(exportCombine, file_type="svg", file_obj=directory + "/bin" + str(i) + ".svg")
+
+ focus_results()
+
+ blocked = False
+
+
+# forces window to appear in taskbar, windows specific
+def set_appwindow(root):
+ hwnd = windll.user32.GetParent(root.winfo_id())
+ style = windll.user32.GetWindowLongW(hwnd, GWL_EXSTYLE)
+ style = style & ~WS_EX_TOOLWINDOW
+ style = style | WS_EX_APPWINDOW
+ res = windll.user32.SetWindowLongW(hwnd, GWL_EXSTYLE, style)
+ # re-assert the new window style
+ root.wm_withdraw()
+ root.after(10, lambda: root.wm_deiconify())
+
+
+# for newer versions of pyinstaller, needed to retrieve icon image
+def resource_path(relative_path):
+ """ Get absolute path to resource, works for dev and for PyInstaller """
+ try:
+ # PyInstaller creates a temp folder and stores path in _MEIPASS
+ base_path = sys._MEIPASS
+ except Exception:
+ base_path = os.path.abspath(".")
+
+ return os.path.join(base_path, relative_path)
+
+
+results = None
+
+# create base window
+root = tk.Tk()
+root.title("Strato")
+root.option_add('*Font', '19')
+root.attributes("-toolwindow", 1)
+p1 = tk.PhotoImage(file=resource_path('icon.png'))
+# Icon set for program window
+root.iconphoto(True, p1)
+root.resizable(0, 0)
+
+# clear children of base window
+clearList = root.winfo_children()
+
+for child in clearList:
+ child.destroy()
+
+# set default state of key checkbox
+showKey = tk.BooleanVar()
+
+# generate window
+menubar = tk.Menu(root)
+filemenu = tk.Menu(menubar, tearoff=0)
+
+# TODO: filemenu.add_command(label="About", command=about)
+filemenu.add_command(label="Exit", command=root.destroy)
+menubar.add_cascade(label="File", menu=filemenu)
+
+modelFrame = tk.Frame(root)
+topModelFrame = tk.Frame(modelFrame)
+modelLabel = tk.Label(topModelFrame, text="Model: ")
+modelEntry = tk.Label(topModelFrame, text="N/A")
+modelBrowse = tk.Button(modelFrame, text="Browse", command=getFile)
+
+entriesFrame = tk.Frame(root)
+layerEntryFrame = tk.Frame(entriesFrame)
+layerThicknessLabel = tk.Label(layerEntryFrame, text="Layer Thickness (N/A): ")
+layerThicknessEntry = tk.Entry(layerEntryFrame, width=5)
+
+scaleEntryFrame = tk.Frame(entriesFrame)
+scaleFactorLabel = tk.Label(scaleEntryFrame, text="Model Scale Factor: ")
+scaleFactorEntry = tk.Entry(scaleEntryFrame, width=5)
+scaleFactorEntry.insert(0, "1")
+
+numbersFrame = tk.Frame(root)
+dimensionsAfterLabel = tk.Label(numbersFrame, text="Scaled Dimensions (N/A)")
+xAfterlabel = tk.Label(numbersFrame, text="x: N/A")
+yAfterlabel = tk.Label(numbersFrame, text="y: N/A")
+zAfterlabel = tk.Label(numbersFrame, text="z: N/A")
+
+numLayersLabel = tk.Label(root, text="Layers: N/A")
+
+goButton = tk.Button(root, text="Go", command=go)
+
+root.config(menu=menubar)
+
+modelFrame.pack(pady=10)
+topModelFrame.pack()
+modelLabel.pack(side=LEFT)
+modelEntry.pack(side=LEFT)
+modelBrowse.pack()
+
+entriesFrame.pack()
+numbersFrame.pack(pady=10)
+layerEntryFrame.pack()
+scaleEntryFrame.pack(fill=X)
+scaleFactorLabel.pack(side=LEFT)
+scaleFactorEntry.pack(side=LEFT)
+layerThicknessLabel.pack(side=LEFT)
+layerThicknessEntry.pack(side=LEFT)
+
+dimensionsAfterLabel.pack()
+xAfterlabel.pack()
+yAfterlabel.pack()
+zAfterlabel.pack()
+
+numLayersLabel.pack()
+
+goButton.pack(ipadx=10, pady=5)
+
+root.after(10, lambda: set_appwindow(root))
+root.mainloop()