gcodeTransformer.py

import argparse
import sys
import re
import io
########################################################


arg = argparse.ArgumentParser(add_help=False) 
arg.add_argument ('-f', '--file', required=True, help='input file name (required)')
arg.add_argument ('-o', '--output_file', default='', help='output_file = output file name (if not specified, it will return the code generated)')
arg.add_argument ('-x', '--move_x', default=0, help='move_x = X offset in mm')
arg.add_argument ('-y', '--move_y', default=0, help='move_y = B offset in mm')
arg.add_argument ('-r', '--rotate', default=0, help='rotate = rotate angle (times 90)')
arg.add_argument ('-k', '--keep_space', nargs='?', help='to keep empty space around gcode (page size) on rotate if not will gcode will fit to the axe')
arg.add_argument ('-w', '--width', default=0, help='page width require if --keep_space used')
arg.add_argument ('-h', '--height', default=0, help='page height require if --keep_space used')
arg.add_argument ('-m', '--mirror', default=0, help='mirror = axis mirroring (axis name)')
arg.add_argument ('-s', '--scale', default=0, help='scale = percentage scale, negative is supported')
arg.add_argument ('-c', '--combine', default=0, help='combine = combine code (example 2x3x10 or 1x2x8 ... where the first number on X is the second number on Y is the third indent) ')
arg.add_argument ('-rd', '--round', default=-1, help='round X and Y value, can be combined with another operation or used alone')
arg.parse_args()


input_file = arg.parse_args().file
output_file = arg.parse_args().output_file
move_x = int(arg.parse_args().move_x)
move_y = int(arg.parse_args().move_y)
rotate = int(arg.parse_args().rotate)
width = int(float(arg.parse_args().width))  # to prevent error on flot value
height = int(float(arg.parse_args().height))
mirror = arg.parse_args().mirror
scale = int(arg.parse_args().scale)
combine = arg.parse_args().combine
roundIt = int(arg.parse_args().round)

keepSpace = False
if '-k' in sys.argv or '--keep_space' in sys.argv:
    if width <= 0 or height <= 0:
        raise ValueError('width and height required!')
    keepSpace = True

# ==============================================================================


with open(input_file) as file:
    comma = ';'
    data = file.read()
    if comma in data:
        data = data.replace(';','')
    else:
        comma = ''

# ==============================================================================


def roundUp(x):
    if roundIt > -1:
        return round(x,roundIt)
    return x

def sizes(i_data):
    max_x = max_y = min_x = min_y = 0

    for row in data.split('\n'):
        for b in row.split():
            if b.find('X') != -1:
                x = float(b.replace('X', ''))
                if x > max_x:
                    max_x = x
                if x < min_x:
                    min_x = x
            if b.find('Y') != -1:
                y = float(b.replace('Y', ''))
                if y > max_y:
                    max_y = y
                if y < min_y:
                    min_y = y
    size_x = max_x - min_x
    size_y = max_y - min_y
    return [max_x, max_y, min_x, min_y, size_x, size_y]


# ==============================================================================



def rotate_90(i_data):
    n_data = ''
    for row in i_data.split('\n'):
        n_row = []
        for b in row.split():
            if b.find('X') != -1:
                n_val = roundUp(-float(b.replace('X', ''))+g_size[4])
                n_b = '{axis}{val}'.format(axis='Y', val=n_val)
            elif b.find('Y') != -1:
                val = b.replace('Y', '')
                n_b = '{axis}{val}'.format(axis='X', val=roundUp(float(val)))
            else:
                n_b = b
            n_row.append(n_b)
        n_data += "{n_r}\n".format(n_r=' '.join(n_row))

    return n_data

def rotate_270(i_data):
    n_data = ''
    for row in i_data.split('\n'):
        X = re.findall(r'X([0-9\.e\-]+)', row, re.IGNORECASE)
        Y = re.findall(r'Y([0-9\.e\-]+)', row, re.IGNORECASE)
        if len(X)>0 and len(Y)>0:
            x = roundUp(-float(Y[0])+g_size[5])
            y = roundUp(float(X[0]))
            row = re.sub(r"X[0-9\.e\-]+", f"X{x}", row)
            row = re.sub(r"Y[0-9\.e\-]+", f"Y{y}", row)
        n_data += f"{row}\n"
    return n_data

def rotate_180(i_data):
    n_data = ''
    for row in i_data.split('\n'):
        X = re.findall(r'X([0-9\.e\-]+)', row, re.IGNORECASE)
        Y = re.findall(r'Y([0-9\.e\-]+)', row, re.IGNORECASE)
        if len(X)>0 and len(Y)>0:
            x = roundUp(-float(X[0])+g_size[4])
            y = roundUp(-float(Y[0])+g_size[5])
            row = re.sub(r"X[0-9\.e\-]+", f"X{x}", row)
            row = re.sub(r"Y[0-9\.e\-]+", f"Y{y}", row)
        n_data += f"{row}\n"
    return n_data


if rotate != 0:
    if keepSpace:
        frame = f"\nG1 F1000 X{width} Y0 TEST\nG1 X{width} Y{height} TEST\nG1 X0 Y{height} TEST\nG1 X0 Y0 TEST"
        data = f"{data}{frame}"
    g_size = sizes(data)
    if rotate == -90 or rotate == 270:
        data = rotate_270(data)
    elif abs(rotate) == 180:
        data = rotate_180(data)
    elif rotate == 90 or rotate == -270:
        data = rotate_90(data)
    if keepSpace:
        # clean up
        data = re.sub(r"G1.+?(?=TEST)TEST\n?", "", data)
    if rotate%90 != 0 or abs(rotate) > 360:
        raise ValueError('angle should be a multiple of 90!')



# ==============================================================================


def mirror_xy(i_data, xy):
    n_data = ''
    for row in i_data.split('\n'):
        n_row = []
        for b in row.split():
            if b.find('X') != -1:
                if xy == 'X':
                    n_val = roundUp(-float(b.replace('X', ''))+g_size[4])
                    n_b = 'X{val}'.format(val=n_val)
            elif b.find('Y') != -1:
                if xy == 'Y':
                    n_val = roundUp(-float(b.replace('Y', ''))+g_size[5])
                    n_b = 'Y{val}'.format(val=n_val)
            else:
                n_b = b
            n_row.append(n_b)
        n_data += "{n_r}\n".format(n_r=' '.join(n_row))

    return n_data


if mirror != 0:
    g_size = sizes(data)
    data = mirror_xy(data, mirror)

# ==============================================================================


def scale_code(i_data, rate):
    rate = float(rate / 100)
    n_data = ''
    for row in i_data.split('\n'):
        n_row = []
        for b in row.split():
            if b.find('X') != -1:
                x = float(b.replace('X', ''))
                n_b = 'X{n_x}'.format(n_x=roundUp((x - g_size[2]) * rate + x))
            elif b.find('Y') != -1:
                y = float(b.replace('Y', ''))
                n_b = 'Y{n_y}'.format(n_y=roundUp((y - g_size[3]) * rate + y))
            else:
                n_b = b
            n_row.append(n_b)
        n_data += "{n_r}\n".format(n_r=' '.join(n_row))
    return n_data


if scale != 0:
    g_size = sizes(data)
    data = scale_code(data, scale)

# ==============================================================================


def move_xy(i_data, x, y):
    n_data = ''
    for row in i_data.split('\n'):
        n_row = []
        for b in row.split():
            if b.find('X') != -1:
                n_b = 'X{v}'.format(v=roundUp(float(b.replace('X', ''))+x))
            elif b.find('Y') != -1:
                n_b = 'Y{v}'.format(v=roundUp(float(b.replace('Y', ''))+y))
            else:
                n_b = b
            n_row.append(n_b)
        n_data += "{n_r}\n".format(n_r=' '.join(n_row))
    return n_data

if move_x != 0 or move_y != 0:
    data = move_xy(data, move_x, move_y)

# ==============================================================================


def combine_gcode(i_data, x, y, offset):
    out_data = ""
    g_size = sizes(data)
    for i in range(int(x)):
        for j in range(int(y)):
            m_x = int((g_size[4] + int(offset)) * i)
            m_y = int((g_size[5] + int(offset)) * j)
            out_data += move_xy(i_data, m_x, m_y)
    if move_x != 0 or move_y != 0:
        out_data = move_xy(data, move_x, move_y)
    return out_data


if combine != 0:
    params=combine.split('x')
    data = combine_gcode(data, params[0], params[1], params[2])


# ==============================================================================

def roundUpOnly(i_data):
    n_data = ''
    for row in i_data.split('\n'):
        n_row = []
        for b in row.split():
            if b.find('X') != -1:
                x = float(b.replace('X', ''))
                n_b = 'X{n_x}'.format(n_x=round(x, roundIt))
            elif b.find('Y') != -1:
                y = float(b.replace('Y', ''))
                n_b = 'Y{n_y}'.format(n_y=round(y, roundIt))
            else:
                n_b = b
            n_row.append(n_b)
        n_data += "{n_r}\n".format(n_r=' '.join(n_row))
    return n_data


if roundIt > -1 and not any(i != 0 for i in [move_x, move_y, rotate, mirror, scale, combine]):
    data = roundUpOnly(data)

# ==============================================================================


if comma:
    data = data.replace('\n', f"{comma}\n").replace('\n;','').replace('\n\n','\n')
    data = re.sub(r";\n$", ";", data)
if not output_file:
    print(data)
else:
    f = io.open(output_file, 'w', newline='\n')
    f.write(data)