First commit

README.md

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 # RepRapFirmware-Image-Tools
-Tools to generate and test RepRapFirmware LCD images
+Python tools to generate and test RepRapFirmware LCD images from any common image format. Preserves the pixel dimensions, reduces to single-colour.
+
+## Requirements
+Python3
+math, sys, and PIL libraries installed
+
+## RRF-Gen.py
+Generates images for use with the [RepRapFirmware 128x64 LCD implementation](https://duet3d.dozuki.com/Wiki/Duet_2_Maestro_12864_display_menu_system)
+Usage: `./RRF-Gen.py [inputfile] [outputfile]`
+eg: `./RRF-Gen.py nozzle.gif nozzle.img`
+
+## RRF-View.py
+Displays a preview of the images
+
+## In use
+I used this to generate some images for [my menu setup](https://github.com/jameswood/Duet-Maestro-Menu)

RRF-Gen.py

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+#!/usr/bin/python3
+import math
+import sys
+from PIL import Image
+
+image = Image.open(sys.argv[1]).convert('L')
+
+bitsPerRow = math.ceil(image.width/8) * 8
+paddingBits = bitsPerRow - image.width
+outputFile = open(sys.argv[2], "wb")
+
+outputFile.write(bytes((image.width,)))
+outputFile.write(bytes((image.height,)))
+
+for row in range(image.height):
+	outputByte = ""
+	bitCounter = 0
+	for column in range(image.width):
+		pixel = image.getpixel((column,row))
+		if bitCounter > 7:
+			outputFile.write(bytes((int(outputByte,2),)))
+			outputByte = ""
+			bitCounter = 0
+		if pixel > 128:
+			outputByte += "0"
+		else:
+			outputByte += "1"
+		bitCounter += 1
+	for i in range(0, paddingBits):
+		outputByte += "0"
+	outputFile.write(bytes((int(outputByte,2),)))
+
+outputFile.close()

RRF-View.py

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+#!/usr/bin/python3
+import math
+import sys
+
+inputFile = open(sys.argv[1], "rb")
+print("opening ", sys.argv[1])
+contents = inputFile.read()
+byteCount = 0
+imageBytes = ''
+
+for char in contents:
+	if byteCount == 0: width=char
+	elif byteCount == 1: height = char
+	else:
+		imageBytes += "{:08b}".format(char)
+	byteCount += 1
+
+bitsPerRow = math.ceil(width/8) * 8
+
+print(" width: ", width)
+print("height: ", height)
+print("padded bits per row: ", bitsPerRow)
+
+bitNumber = 1
+row = 0
+for bit in imageBytes:
+	if bit == '0': bit = '◻︎'
+	if bit == '1': bit = '◼︎'
+	if bitNumber - (bitsPerRow * row) <= width:
+		print(bit, end='')
+	if bitNumber % bitsPerRow == 0:
+		print()
+		row += 1
+	bitNumber += 1

nozzle.img

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+øÀøÀøÀððÀÀ
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