diff options
Diffstat (limited to 'gerber/utils.py')
| -rw-r--r-- | gerber/utils.py | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/gerber/utils.py b/gerber/utils.py index 02a8a14..35b4fd0 100644 --- a/gerber/utils.py +++ b/gerber/utils.py @@ -10,7 +10,7 @@ files. """ # Author: Hamilton Kibbe <ham@hamiltonkib.be> -# License: MIT +# License: def parse_gerber_value(value, format=(2, 5), zero_suppression='trailing'): """ Convert gerber/excellon formatted string to floating-point number @@ -54,6 +54,7 @@ def parse_gerber_value(value, format=(2, 5), zero_suppression='trailing'): raise ValueError('Parser only supports precision up to 6:7 format') # Remove extraneous information + value = value.strip() value = value.strip(' +') negative = '-' in value if negative: @@ -67,7 +68,8 @@ def parse_gerber_value(value, format=(2, 5), zero_suppression='trailing'): offset = 0 if zero_suppression == 'trailing' else (MAX_DIGITS - len(value)) for i, digit in enumerate(value): digits[i + offset] = digit - + + result = float(''.join(digits[:integer_digits] + ['.'] + digits[integer_digits:])) return -1.0 * result if negative else result @@ -128,3 +130,37 @@ def write_gerber_value(value, format=(2, 5), zero_suppression='trailing'): return ''.join(digits) if not negative else ''.join(['-'] + digits) + + +def decimal_string(value, precision=6): + """ Convert float to string with limited precision + + Parameters + ---------- + value : float + A floating point value. + + precision : + Maximum number of decimal places to print + + Returns + ------- + value : string + The specified value as a string. + + """ + floatstr = '%0.20g' % value + integer = None + decimal = None + if '.' in floatstr: + integer, decimal = floatstr.split('.') + elif ',' in floatstr: + integer, decimal = floatstr.split(',') + if len(decimal) > precision: + decimal = decimal[:precision] + if integer or decimal: + return ''.join([integer, '.', decimal]) + else: + return int(floatstr) + + |