80 lines
2.8 KiB
Python
80 lines
2.8 KiB
Python
"""Generate rgblight_breathe_table.h
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"""
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import math
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from argparse import ArgumentTypeError
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from milc import cli
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import qmk.path
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def breathing_center(value):
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value = float(value)
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if value >= 1 and value <= 2.7:
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return value
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else:
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raise ArgumentTypeError('Breathing center must be between 1 and 2.7')
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def breathing_max(value):
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value = int(value)
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if value in range(0, 256):
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return value
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else:
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raise ArgumentTypeError('Breathing max must be between 0 and 255')
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@cli.argument('-c', '--center', arg_only=True, type=breathing_center, default=1.85, help='The breathing center value, from 1 to 2.7. Default: 1.85')
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@cli.argument('-m', '--max', arg_only=True, type=breathing_max, default=255, help='The breathing maximum value, from 0 to 255. Default: 255')
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@cli.argument('-o', '--output', arg_only=True, type=qmk.path.normpath, help='File to write to')
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@cli.argument('-q', '--quiet', arg_only=True, action='store_true', help='Quiet mode, only output error messages')
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@cli.subcommand('Generates an RGB Light breathing table header.')
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def generate_rgb_breathe_table(cli):
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"""Generate a rgblight_breathe_table.h file containing a breathing LUT for RGB Lighting (Underglow) feature.
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"""
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breathe_values = [0] * 256
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for pos in range(0, 256):
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breathe_values[pos] = (int)((math.exp(math.sin((pos/255) * math.pi)) - cli.args.center / math.e) * (cli.args.max / (math.e - 1 / math.e))) # noqa: yapf insists there be no whitespace around /
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values_template = ''
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for s in range(0, 3):
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step = 1 << s
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values_template += '#if RGBLIGHT_BREATHE_TABLE_SIZE == {}\n'.format(256 >> s)
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for pos in range(0, 256, step):
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values_template += ' ' if pos % 8 == 0 else ''
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values_template += '0x{:02X}'.format(breathe_values[pos])
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values_template += ',' if (pos + step) < 256 else ''
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values_template += '\n' if (pos+step) % 8 == 0 else ' ' # noqa: yapf insists there be no whitespace around +
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values_template += '#endif'
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values_template += '\n\n' if s < 2 else ''
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table_template = '''#pragma once
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#define RGBLIGHT_EFFECT_BREATHE_TABLE
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// clang-format off
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// Breathing center: {0:.2f}
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// Breathing max: {1:d}
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const uint8_t PROGMEM rgblight_effect_breathe_table[] = {{
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{2}
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}};
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static const int table_scale = 256 / sizeof(rgblight_effect_breathe_table);
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'''.format(cli.args.center, cli.args.max, values_template)
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if cli.args.output:
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cli.args.output.parent.mkdir(parents=True, exist_ok=True)
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if cli.args.output.exists():
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cli.args.output.replace(cli.args.output.name + '.bak')
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cli.args.output.write_text(table_template)
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if not cli.args.quiet:
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cli.log.info('Wrote header to %s.', cli.args.output)
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else:
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print(table_template)
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