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134 lines
5.5 KiB
Python
134 lines
5.5 KiB
Python
#!/usr/bin/env python3
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#
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# Prusa Slicer as of v2.7 remove headers before jpg and convert PNG to JPG.
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#
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# This script has been developed for E3S1PROFORKBYTT by Thomas Toka.
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#
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# ------------------------------------------------------------------------------
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import sys
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import base64
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import math
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from PIL import Image
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from io import BytesIO
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def main(source_file):
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# Read the entire G-code file into memory
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with open(source_file, "r") as f:
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lines = f.readlines()
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# Remove any empty lines and lines that are just a semicolon
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lines = [line for line in lines if line.strip() and not line == ';\n']
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# Extract additional information
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filament_used_m, filament_used_g, filament_diameter, filament_density, layer_height = "0", "0", "0", "0", "0"
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layers = 0
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for line in lines:
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if line.startswith("; filament used [mm] ="):
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filament_used_mm = float(line.split("=")[1].strip())
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filament_used_m = round(filament_used_mm / 1000, 2)
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if filament_used_m > 0:
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filament_used_m = math.ceil(filament_used_m)
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else:
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filament_used_m = 0
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elif line.startswith("; filament used [g] ="):
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filament_used_g = float(line.split("=")[1].strip())
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filament_used_g = round(filament_used_g, 2)
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if filament_used_g > 0:
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filament_used_g = math.ceil(filament_used_g)
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else:
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filament_used_g = 0
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elif line.startswith("; filament_diameter ="):
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filament_diameter = float(line.split("=")[1].strip())
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elif line.startswith("; filament_density ="):
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filament_density = float(line.split("=")[1].strip())
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elif line.startswith("; layer_height ="):
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layer_height = line.split("=")[1].strip()
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layer_height = round(float(layer_height), 2)
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layer_height = "{:.2f}".format(layer_height)
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elif line.startswith(";AFTER_LAYER_CHANGE"):
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layers += 1
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filament_used_m_per_layer = filament_used_m / max(layers, 1) # Avoid division by zero
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remaining_filament_m = filament_used_m
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filament_used_g_per_layer = filament_used_g / max(layers, 1) # Avoid division by zero
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remaining_filament_g = filament_used_g
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m117_added = 0 # Counter for added M117 commands
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# Counting AFTER_LAYER_CHANGE occurrences
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after_layer_change_count = sum(';AFTER_LAYER_CHANGE' in line for line in lines) - 1
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# Find the thumbnail start and end lines
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thumbnail_start, thumbnail_end = None, None
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for i, line in enumerate(lines):
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if '; thumbnail begin' in line:
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thumbnail_start = i
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elif '; thumbnail end' in line:
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thumbnail_end = i
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break
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if thumbnail_start is not None and thumbnail_end is not None:
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# Extract and decode the PNG data
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original_png_data = "".join(lines[thumbnail_start + 1:thumbnail_end]).replace("; ", "")
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png_data_bytes = base64.b64decode(original_png_data)
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image = Image.open(BytesIO(png_data_bytes))
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image = image.convert("RGB")
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# Encode the image as JPEG
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buffer = BytesIO()
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image.save(buffer, format="JPEG")
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image_jpg_data = buffer.getvalue()
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# Base64 encode the JPEG data
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image_jpg_base64 = base64.b64encode(image_jpg_data).decode('utf-8')
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# Split the base64 string into formatted lines
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max_line_length = 79 - len("; ")
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injected_jpg_data = ["; " + image_jpg_base64[i:i + max_line_length] for i in range(0, len(image_jpg_base64), max_line_length)]
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# Replace the old PNG lines with the new JPEG lines
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lines[thumbnail_start + 1:thumbnail_end] = [line + "\n" for line in injected_jpg_data]
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# Update the '; thumbnail_JPG begin' line using 'after_layer_change_count'
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start_line_number = 1
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end_line_number = start_line_number + len(injected_jpg_data) + 1
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lines[thumbnail_start] = f'; thumbnail_JPG begin 250x250 {len(image_jpg_data)} {start_line_number} {end_line_number} {filament_used_m} {filament_used_g} {layer_height} {filament_diameter} {filament_density} {after_layer_change_count}\n'
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# Insert 'M117 Pxxx Qxxx' before each ';AFTER_LAYER_CHANGE'
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layer_number = 0
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i = 0
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while i < len(lines):
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if lines[i].startswith(';AFTER_LAYER_CHANGE'):
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if layer_number == 0:
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m117_line = "M117 L1 M{} G{} Z{} Q{}".format(math.ceil(remaining_filament_m), math.ceil(remaining_filament_g), layers, layer_height)
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else:
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m117_line = "M117 L{} M{} G{}".format(layer_number + 1, math.ceil(remaining_filament_m), math.ceil(remaining_filament_g))
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lines.insert(i, m117_line + '\n')
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remaining_filament_m -= filament_used_m_per_layer
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remaining_filament_g -= filament_used_g_per_layer
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m117_added += 1 # Increment counter
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layer_number += 1
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i += 1
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i += 1
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if m117_added > 0:
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print("Added {} M117 commands.".format(m117_added))
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else:
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print("No M117 commands were added. Check the G-code for ';AFTER_LAYER_CHANGE' markers.")
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# Remove the '; generated by PrusaSlicer' line and any leading semicolons or empty lines
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lines = [line for line in lines if line.strip() and not line.startswith('; generated by PrusaSlicer')]
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# Write the modified content back to the original file
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with open(source_file, "w") as f:
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f.writelines(lines)
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if __name__ == "__main__":
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if len(sys.argv) < 2:
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print("Usage: python3 script.py <gcode-file>")
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sys.exit(1)
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main(sys.argv[1])
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