578 lines
21 KiB
Python
578 lines
21 KiB
Python
import base64
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import math
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import pathlib
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from collections import namedtuple
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from flask import Flask, render_template, request, Response
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from html import escape
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from fontTools.ttLib import TTFont
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from fontTools.pens.svgPathPen import SVGPathPen
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app = Flask(__name__)
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VERSION = "0.87"
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_LOGO_PATH = pathlib.Path(__file__).parent / 'static' / 'logo.png'
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_LOGO_B64 = base64.b64encode(_LOGO_PATH.read_bytes()).decode()
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_FontData = namedtuple('_FontData', ['key', 'label', 'b64', 'glyph_set', 'cmap', 'hmtx', 'upm', 'glyf'])
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_FONT_LABELS = {
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'GOST_2.30481_type_A': 'GOST Type A',
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'GOST_2.30481_type_A_Bold': 'GOST Type A Bold',
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'Gost2.30481TypeB': 'GOST Type B',
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'ISOCPEUR': 'ISOCPEUR',
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'SIEMENS_GOST_Type_A': 'Siemens GOST Type A',
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'TGL_31034-1': 'TGL 31 034',
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'alte-din-1451-mittelschrift.regular': 'Alte DIN 1451 Mittelschrift',
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'alte-din-1451-mittelschrift.gepraegt': 'Alte DIN 1451 Mittelschrift (Gepraegt)',
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}
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def _load_fonts():
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font_dir = pathlib.Path(__file__).parent / 'fonts'
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if not font_dir.exists():
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font_dir = pathlib.Path(__file__).parent.parent / 'fonts'
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fonts = {}
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for path in sorted(font_dir.glob('*.ttf')):
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key = path.stem
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obj = TTFont(str(path))
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fonts[key] = _FontData(
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key=key,
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label=_FONT_LABELS.get(key, key.replace('_', ' ')),
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b64=base64.b64encode(path.read_bytes()).decode(),
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glyph_set=obj.getGlyphSet(),
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cmap=obj.getBestCmap(),
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hmtx=obj['hmtx'].metrics,
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upm=obj['head'].unitsPerEm,
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glyf=obj['glyf'],
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)
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return fonts
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_FONTS = _load_fonts()
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_DEFAULT_FONT = 'alte-din-1451-mittelschrift.regular'
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# SVG absolute coordinate constants (1 user unit = 1 mm), pre-layer-translate
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# local frame — the <g> wrapper applies translate(-60.717741,-107.14126).
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PIVOT_X, PIVOT_Y = 107.42845, 162.62819
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R0 = 43.842751 # rim / inner-tick radius
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ANGLE_MIN, ANGLE_MAX = -45.667193, 45.667193 # degrees from vertical, clockwise-positive
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MAJOR_LEN, MAJOR_W = 4.7839203, 0.79658329
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MEDIUM_LEN, MEDIUM_W = 3.1215858, 0.37985462
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SMALL_LEN, SMALL_W = 1.8121802, 0.27478597
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LABEL_RADIUS = 49.862
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UNIT_X, UNIT_Y = 107.03512, 136.64594
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LEFT_X, LEFT_Y0 = 73.432251, 145.16051
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RIGHT_X, RIGHT_Y0 = 142.4485, 145.32773
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CORNER_LINE_SPACING = 4.4586
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CORNER_FONT_SIZE = 3.56685
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PIVOT_CIRCLE_R = 1.7287594
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BODY_D = (
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"m 62.162097,107.14126 c -0.800087,0 -1.444356,0.64428 -1.444356,1.44436 v 45.44839 "
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"c 0,0.80008 0.644269,1.44436 1.444356,1.44436 h 7.345288 c 0.902634,0 1.233517,1.12706 "
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"1.233517,1.12706 l 0.09043,3.03909 21.903573,-0.0904 2.226221,-5.98775 c 8.352594,-2.8884 "
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"16.624974,-2.8884 24.817094,0 l 2.22674,5.98775 21.90357,0.0904 0.0904,-3.03909 c 0,0 "
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"0.33088,-1.12706 1.23352,-1.12706 h 7.86567 c 0.80009,0 1.44384,-0.64428 1.44384,-1.44436 "
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"v -45.44839 c 0,-0.80008 -0.64375,-1.44436 -1.44384,-1.44436 z m 29.619898,45.85354 "
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"a 1.3990685,1.3990685 0 0 1 1.398881,1.39939 1.3990685,1.3990685 0 0 1 -1.398881,1.39888 "
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"1.3990685,1.3990685 0 0 1 -1.399398,-1.39888 1.3990685,1.3990685 0 0 1 1.399398,-1.39939 "
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"z m 31.220835,0 a 1.3990685,1.3990685 0 0 1 1.39888,1.39939 1.3990685,1.3990685 0 0 1 "
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"-1.39888,1.39888 1.3990685,1.3990685 0 0 1 -1.3994,-1.39888 1.3990685,1.3990685 0 0 1 "
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"1.3994,-1.39939 z"
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)
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# --- Inline markup for the unit label -------------------------------------
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_SUP_SCALE = 0.62
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_SUP_RISE = 0.36
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_SUB_DROP = 0.14
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_FRAC_SCALE = 0.62
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_FRAC_AXIS = 0.32
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_FRAC_GAP = 0.14
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_FRAC_SIDE = 0.12
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_UNIT_BOX_X0, _UNIT_BOX_X1 = UNIT_X - 15.0, UNIT_X + 15.0
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_UNIT_BOX_Y0, _UNIT_BOX_Y1 = UNIT_Y - 6.0, UNIT_Y + 6.0
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_UNIT_MAX_FS = 9.46938021
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_UNIT_SCALE_X = 1.0
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def _point_at(radius: float, angle_deg: float):
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th = math.radians(angle_deg)
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return PIVOT_X + radius * math.sin(th), PIVOT_Y - radius * math.cos(th)
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def _glyph_svg(ch: str, x: float, y: float, fs: float, fill: str, fd: _FontData):
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gn = fd.cmap.get(ord(ch))
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if gn is None:
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return None, 0.0
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s = fs / fd.upm
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adv = fd.hmtx.get(gn, (0, 0))[0] * s
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pen = SVGPathPen(fd.glyph_set)
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fd.glyph_set[gn].draw(pen)
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d = pen.getCommands()
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if not d:
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return None, adv
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t = f'translate({x:.5f},{y:.5f}) scale({s:.8f},{-s:.8f})'
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return f'<path style="fill:{fill}" transform="{t}" d="{d}"/>', adv
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def _glyph_ybounds(ch: str, fd: _FontData):
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gn = fd.cmap.get(ord(ch))
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if gn is None:
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return 0.0, 0.0
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g = fd.glyf[gn]
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if g.numberOfContours == 0:
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return 0.0, 0.0
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g.recalcBounds(fd.glyf)
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return g.yMin / fd.upm, g.yMax / fd.upm
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def _extract_braced(s: str, i: int):
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depth, j = 1, i + 1
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while j < len(s) and depth:
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if s[j] == '{':
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depth += 1
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elif s[j] == '}':
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depth -= 1
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if depth == 0:
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break
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j += 1
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return s[i + 1:j], j + 1
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def _parse_braced(inner: str):
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depth = 0
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for k, ch in enumerate(inner):
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if ch == '{':
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depth += 1
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elif ch == '}':
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depth -= 1
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elif ch == '/' and depth == 0:
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return ('frac', _parse_markup(inner[:k]), _parse_markup(inner[k + 1:]))
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return ('group', _parse_markup(inner))
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def _parse_atom(s: str, i: int):
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if i >= len(s):
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return [], i
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if s[i] == '{':
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inner, j = _extract_braced(s, i)
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return [_parse_braced(inner)], j
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return [('lit', s[i])], i + 1
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def _parse_markup(s: str):
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nodes, i = [], 0
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while i < len(s):
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c = s[i]
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if c in '^_':
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atom, i = _parse_atom(s, i + 1)
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nodes.append(('sup' if c == '^' else 'sub', atom))
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elif c == '{':
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inner, j = _extract_braced(s, i)
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nodes.append(_parse_braced(inner))
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i = j
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else:
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nodes.append(('lit', c))
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i += 1
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return nodes
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def _measure(nodes, fs: float, fd: _FontData) -> float:
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w = 0.0
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for n in nodes:
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if n[0] == 'lit':
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gn = fd.cmap.get(ord(n[1]))
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if gn:
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w += fd.hmtx.get(gn, (0, 0))[0] / fd.upm * fs
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elif n[0] == 'group':
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w += _measure(n[1], fs, fd)
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elif n[0] in ('sup', 'sub'):
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w += _measure(n[1], fs * _SUP_SCALE, fd)
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elif n[0] == 'frac':
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fs2 = fs * _FRAC_SCALE
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w += max(_measure(n[1], fs2, fd), _measure(n[2], fs2, fd)) + 2 * _FRAC_SIDE * fs2
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return w
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def _frac_layout(n, fs: float, fd: _FontData):
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fs2 = fs * _FRAC_SCALE
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axis = -_FRAC_AXIS * fs
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_, num_bot = _vbounds(n[1], fs2, fd)
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num_base = axis - _FRAC_GAP * fs2 - num_bot
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den_top, _ = _vbounds(n[2], fs2, fd)
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den_base = axis + _FRAC_GAP * fs2 - den_top
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return fs2, axis, num_base, den_base
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def _vbounds(nodes, fs: float, fd: _FontData):
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lo, hi = math.inf, -math.inf
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for n in nodes:
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if n[0] == 'lit':
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ymin, ymax = _glyph_ybounds(n[1], fd)
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a, b = -ymax * fs, -ymin * fs
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elif n[0] == 'group':
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a, b = _vbounds(n[1], fs, fd)
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elif n[0] == 'sup':
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a, b = _vbounds(n[1], fs * _SUP_SCALE, fd)
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a, b = a - _SUP_RISE * fs, b - _SUP_RISE * fs
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elif n[0] == 'sub':
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a, b = _vbounds(n[1], fs * _SUP_SCALE, fd)
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a, b = a + _SUB_DROP * fs, b + _SUB_DROP * fs
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elif n[0] == 'frac':
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fs2, axis, num_base, den_base = _frac_layout(n, fs, fd)
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nt, nb = _vbounds(n[1], fs2, fd)
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dt, db = _vbounds(n[2], fs2, fd)
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a = min(nt + num_base, axis)
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b = max(db + den_base, axis)
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else:
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continue
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lo, hi = min(lo, a), max(hi, b)
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return (0.0, 0.0) if lo > hi else (lo, hi)
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def _draw_nodes(nodes, x: float, y: float, fs: float, fill: str, fd: _FontData):
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parts, cx = [], x
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for n in nodes:
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if n[0] == 'lit':
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p, adv = _glyph_svg(n[1], cx, y, fs, fill, fd)
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if p:
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parts.append(p)
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cx += adv
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elif n[0] == 'group':
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p, adv = _draw_nodes(n[1], cx, y, fs, fill, fd)
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parts += p
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cx += adv
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elif n[0] in ('sup', 'sub'):
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fs2 = fs * _SUP_SCALE
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y2 = y - _SUP_RISE * fs if n[0] == 'sup' else y + _SUB_DROP * fs
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p, adv = _draw_nodes(n[1], cx, y2, fs2, fill, fd)
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parts += p
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cx += adv
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elif n[0] == 'frac':
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fs2, axis, num_base, den_base = _frac_layout(n, fs, fd)
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wn, wd = _measure(n[1], fs2, fd), _measure(n[2], fs2, fd)
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bar_w = max(wn, wd) + 2 * _FRAC_SIDE * fs2
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pn, _ = _draw_nodes(n[1], cx + (bar_w - wn) / 2, y + num_base, fs2, fill, fd)
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pd, _ = _draw_nodes(n[2], cx + (bar_w - wd) / 2, y + den_base, fs2, fill, fd)
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parts += pn + pd
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ay = y + axis
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parts.append(
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f'<line x1="{cx:.5f}" y1="{ay:.5f}" x2="{cx + bar_w:.5f}" y2="{ay:.5f}"'
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f' style="stroke:{fill};stroke-width:{fs * 0.055:.5f};stroke-linecap:butt" />'
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)
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cx += bar_w
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return parts, cx - x
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def _has_markup(s: str) -> bool:
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return any(c in s for c in '^_') or ('{' in s and '}' in s)
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def _markup_unit_svg(unit: str, fd: _FontData, fill='#1a1a1a') -> str:
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nodes = _parse_markup(unit)
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x0, x1 = _UNIT_BOX_X0, _UNIT_BOX_X1
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y0, y1 = _UNIT_BOX_Y0, _UNIT_BOX_Y1
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xc, yc = (x0 + x1) / 2, (y0 + y1) / 2
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w1 = _measure(nodes, 1.0, fd)
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top1, bot1 = _vbounds(nodes, 1.0, fd)
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fs = _UNIT_MAX_FS
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if w1 > 0:
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fs = min(fs, (x1 - x0) / (w1 * _UNIT_SCALE_X))
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if bot1 - top1 > 0:
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fs = min(fs, (y1 - y0) / (bot1 - top1))
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w = _measure(nodes, fs, fd)
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top, bot = _vbounds(nodes, fs, fd)
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y_base = yc - (top + bot) / 2
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parts, _ = _draw_nodes(nodes, xc - w / 2, y_base, fs, fill, fd)
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cond = f'translate({xc:.5f},0) scale({_UNIT_SCALE_X},1) translate({-xc:.5f},0)'
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return f'<g transform="{cond}">\n{chr(10).join(parts)}\n</g>'
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def _text_to_paths(text, x, y, font_size, fd: _FontData, anchor='start', fill='#1a1a1a', wrap_transform=None):
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s = font_size / fd.upm
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if anchor in ('middle', 'end'):
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total_w = sum(
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fd.hmtx.get(fd.cmap.get(ord(ch)), (0, 0))[0] * s
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for ch in text if fd.cmap.get(ord(ch))
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)
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x -= total_w / 2 if anchor == 'middle' else total_w
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parts = []
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cx = x
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for ch in text:
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gn = fd.cmap.get(ord(ch))
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if gn is None:
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continue
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pen = SVGPathPen(fd.glyph_set)
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fd.glyph_set[gn].draw(pen)
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d = pen.getCommands()
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if d:
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t = f'translate({cx:.5f},{y:.5f}) scale({s:.8f},{-s:.8f})'
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parts.append(f'<path style="fill:{fill}" transform="{t}" d="{d}"/>')
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cx += fd.hmtx.get(gn, (0, 0))[0] * s
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inner = '\n'.join(parts)
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if wrap_transform:
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return f'<g transform="{wrap_transform}">{inner}</g>'
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return inner
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def _fmt(v: float) -> str:
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if math.isinf(v):
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return '∞'
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r = round(v)
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if abs(v - r) < 1e-9 * max(1.0, abs(v)):
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return str(int(r))
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exp = math.floor(math.log10(abs(v)))
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decimals = max(0, 4 - 1 - exp)
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s = f"{v:.{decimals}f}"
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return s.rstrip('0').rstrip('.') if '.' in s else s
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def generate_svg(unit, min_val, max_val, left_label, right_label, big_ticks, small_ticks,
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label_count, use_paths=True, scale_type='linear', custom_labels=None,
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label_size=5.1126, font_key=None):
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fd = _FONTS.get(font_key) or _FONTS.get(_DEFAULT_FONT) or next(iter(_FONTS.values()))
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if scale_type == 'log':
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if min_val <= 0 or max_val <= 0:
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raise ValueError("Logarithmic scale requires min and max values greater than 0.")
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lmin, lmax = math.log(min_val), math.log(max_val)
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lspan = lmax - lmin
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if lspan == 0:
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raise ValueError("Logarithmic scale requires min and max values to differ.")
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def value_to_angle(v):
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return ANGLE_MIN + (ANGLE_MAX - ANGLE_MIN) * (math.log(v) - lmin) / lspan
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def major_value(i):
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return min_val * (max_val / min_val) ** (i / big_ticks)
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elif scale_type == 'sqrt':
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if min_val < 0:
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raise ValueError("Square-root scale requires min value ≥ 0.")
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span = max_val - min_val
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if span <= 0:
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raise ValueError("Square-root scale requires max value greater than min.")
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def value_to_angle(v):
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return ANGLE_MIN + (ANGLE_MAX - ANGLE_MIN) * math.sqrt((v - min_val) / span)
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def major_value(i):
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return min_val + span * (i / big_ticks) ** 2
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elif scale_type == 'reciprocal':
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if min_val <= 0:
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raise ValueError("Reciprocal scale requires min and max values greater than 0.")
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if not math.isinf(max_val) and max_val <= min_val:
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raise ValueError("Reciprocal scale requires max value greater than min.")
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if math.isinf(max_val):
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def value_to_angle(v):
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if math.isinf(v):
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return ANGLE_MIN
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return ANGLE_MIN + (ANGLE_MAX - ANGLE_MIN) * min_val / v
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def major_value(i):
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if i == 0:
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return math.inf
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return min_val * big_ticks / i
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else:
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if max_val <= 0:
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raise ValueError("Reciprocal scale requires min and max values greater than 0.")
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k = 1.0 / min_val - 1.0 / max_val
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def value_to_angle(v):
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return ANGLE_MIN + (ANGLE_MAX - ANGLE_MIN) * (1.0 / v - 1.0 / max_val) / k
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def major_value(i):
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return 1.0 / (1.0 / max_val + i / big_ticks * k)
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else:
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span = max_val - min_val
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def value_to_angle(v):
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if span == 0:
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return ANGLE_MIN
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return ANGLE_MIN + (ANGLE_MAX - ANGLE_MIN) * (v - min_val) / span
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def major_value(i):
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return min_val + span * i / big_ticks
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big_interval_angle = (ANGLE_MAX - ANGLE_MIN) / big_ticks
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big_angles = [ANGLE_MIN + i * big_interval_angle for i in range(big_ticks + 1)]
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big_vals = [major_value(i) for i in range(big_ticks + 1)]
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if custom_labels:
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label_count = max(1, min(len(custom_labels), big_ticks + 1))
|
|
custom_labels = custom_labels[:label_count]
|
|
else:
|
|
label_count = max(2, min(label_count, big_ticks + 1))
|
|
|
|
if label_count == 1:
|
|
label_indices = [0]
|
|
else:
|
|
label_indices = [round(k * big_ticks / (label_count - 1)) for k in range(label_count)]
|
|
|
|
def _tick_line(angle_deg, length, width):
|
|
x = PIVOT_X
|
|
y1 = PIVOT_Y - R0
|
|
y2 = PIVOT_Y - R0 - length
|
|
return (
|
|
f' <line x1="{x:.5f}" y1="{y1:.5f}" x2="{x:.5f}" y2="{y2:.5f}"'
|
|
f' style="stroke:#1a1a1a;stroke-width:{width:.5f};stroke-linecap:butt"'
|
|
f' transform="rotate({angle_deg:.5f},{PIVOT_X:.5f},{PIVOT_Y:.5f})" />'
|
|
)
|
|
|
|
font_face = (
|
|
'<defs><style>'
|
|
f'@font-face {{font-family:"{fd.label}";'
|
|
f'src:url("data:font/truetype;base64,{fd.b64}") format("truetype");}}'
|
|
'</style></defs>'
|
|
)
|
|
|
|
parts = [
|
|
'<?xml version="1.0" encoding="UTF-8" standalone="no"?>',
|
|
'<svg width="93.824249mm" height="57.215687mm"'
|
|
' viewBox="0 0 93.824249 57.215687" version="1.1"'
|
|
' xmlns="http://www.w3.org/2000/svg">',
|
|
]
|
|
|
|
if use_paths:
|
|
parts.append(' <g transform="translate(-60.717741,-107.14126)">')
|
|
else:
|
|
parts += [font_face, ' <g transform="translate(-60.717741,-107.14126)">']
|
|
|
|
parts.append(
|
|
f' <path style="fill:#f9f9f9;stroke:#1a1a1a;stroke-width:0.184;'
|
|
f'stroke-linecap:round;stroke-miterlimit:10" d="{BODY_D}" />'
|
|
)
|
|
|
|
p0 = _point_at(R0, ANGLE_MIN)
|
|
pmid = _point_at(R0, 0.0)
|
|
p1 = _point_at(R0, ANGLE_MAX)
|
|
parts.append(
|
|
f' <path style="fill:none;stroke:#000000;stroke-width:0.484;'
|
|
f'stroke-linecap:round;stroke-miterlimit:10"'
|
|
f' d="M {p0[0]:.5f},{p0[1]:.5f} A {R0},{R0} 0 0 1 {pmid[0]:.5f},{pmid[1]:.5f}'
|
|
f' A {R0},{R0} 0 0 1 {p1[0]:.5f},{p1[1]:.5f}" />'
|
|
)
|
|
|
|
parts.append(
|
|
f' <circle style="fill:none;stroke:#b3b3b3;stroke-width:0.184;'
|
|
f'stroke-linecap:round;stroke-miterlimit:10"'
|
|
f' cx="{PIVOT_X:.5f}" cy="{PIVOT_Y:.5f}" r="{PIVOT_CIRCLE_R}" />'
|
|
)
|
|
|
|
for angle in big_angles:
|
|
parts.append(_tick_line(angle, MAJOR_LEN, MAJOR_W))
|
|
|
|
if small_ticks > 0:
|
|
sub = small_ticks + 1
|
|
medium_j = sub // 2 if small_ticks % 2 == 1 else None
|
|
for i in range(big_ticks):
|
|
for j in range(1, small_ticks + 1):
|
|
if scale_type == 'sqrt':
|
|
angle = big_angles[i] + (j / sub) ** 2 * (big_angles[i + 1] - big_angles[i])
|
|
elif scale_type == 'reciprocal' or math.isinf(big_vals[i]):
|
|
angle = big_angles[i] + (j / sub) * (big_angles[i + 1] - big_angles[i])
|
|
else:
|
|
v = big_vals[i] + j * (big_vals[i + 1] - big_vals[i]) / sub
|
|
angle = value_to_angle(v)
|
|
length, width = (MEDIUM_LEN, MEDIUM_W) if j == medium_j else (SMALL_LEN, SMALL_W)
|
|
parts.append(_tick_line(angle, length, width))
|
|
|
|
lx, ly = PIVOT_X, PIVOT_Y - LABEL_RADIUS
|
|
for k, idx in enumerate(label_indices):
|
|
angle = big_angles[idx]
|
|
label = custom_labels[k] if custom_labels else _fmt(big_vals[idx])
|
|
wrap = f'rotate({angle:.5f},{PIVOT_X:.5f},{PIVOT_Y:.5f})'
|
|
if use_paths:
|
|
parts.append(' ' + _text_to_paths(label, lx, ly, label_size, fd,
|
|
anchor='middle', wrap_transform=wrap))
|
|
else:
|
|
parts.append(
|
|
f' <text style="font-size:{label_size:.5f}px;font-family:\'{fd.label}\',monospace;fill:#1a1a1a"'
|
|
f' text-anchor="middle" x="{lx:.5f}" y="{ly:.5f}" transform="{wrap}">{escape(label)}</text>'
|
|
)
|
|
|
|
parts.append(' ' + _markup_unit_svg(unit, fd))
|
|
|
|
left_lines = left_label.split('\n')[:2]
|
|
right_lines = right_label.split('\n')[:2]
|
|
|
|
for i, line in enumerate(left_lines):
|
|
if not line:
|
|
continue
|
|
y = LEFT_Y0 + i * CORNER_LINE_SPACING
|
|
if use_paths:
|
|
parts.append(' ' + _text_to_paths(line, LEFT_X, y, CORNER_FONT_SIZE, fd, anchor='start'))
|
|
else:
|
|
parts.append(
|
|
f' <text style="font-size:{CORNER_FONT_SIZE:.5f}px;font-family:\'{fd.label}\',monospace;fill:#1a1a1a"'
|
|
f' x="{LEFT_X:.5f}" y="{y:.5f}">{escape(line)}</text>'
|
|
)
|
|
|
|
for i, line in enumerate(right_lines):
|
|
if not line:
|
|
continue
|
|
y = RIGHT_Y0 + i * CORNER_LINE_SPACING
|
|
if use_paths:
|
|
parts.append(' ' + _text_to_paths(line, RIGHT_X, y, CORNER_FONT_SIZE, fd, anchor='end'))
|
|
else:
|
|
parts.append(
|
|
f' <text style="font-size:{CORNER_FONT_SIZE:.5f}px;font-family:\'{fd.label}\',monospace;fill:#1a1a1a"'
|
|
f' text-anchor="end" x="{RIGHT_X:.5f}" y="{y:.5f}">{escape(line)}</text>'
|
|
)
|
|
|
|
parts += [' </g>', '</svg>']
|
|
return '\n'.join(parts)
|
|
|
|
|
|
@app.route('/')
|
|
def index():
|
|
fonts = list(_FONTS.values())
|
|
return render_template('index.html', logo_b64=_LOGO_B64, version=VERSION,
|
|
fonts=fonts, default_font=_DEFAULT_FONT)
|
|
|
|
|
|
@app.route('/generate', methods=['POST'])
|
|
def generate():
|
|
unit = request.form.get('unit', '%')
|
|
min_val = float(request.form.get('min', 0))
|
|
max_val = float(request.form.get('max', 100))
|
|
left_label = request.form.get('left_label', '')
|
|
right_label = request.form.get('right_label', '')
|
|
big_ticks = max(1, min(50, int(request.form.get('big_ticks', 10))))
|
|
small_ticks = max(0, min(20, int(request.form.get('small_ticks', 4))))
|
|
label_count = max(2, int(request.form.get('label_count', 6)))
|
|
use_paths = request.form.get('output_mode', 'paths') == 'paths'
|
|
scale_type = request.form.get('scale_type', 'linear')
|
|
font_key = request.form.get('font', _DEFAULT_FONT)
|
|
if request.form.get('max_is_inf') == '1':
|
|
max_val = math.inf
|
|
|
|
custom_labels = [s.strip() for s in request.form.get('labels', '').split(',') if s.strip()] or None
|
|
label_size = max(0.5, min(25.0, float(request.form.get('label_size', 5.1126))))
|
|
|
|
try:
|
|
svg = generate_svg(unit, min_val, max_val, left_label, right_label, big_ticks,
|
|
small_ticks, label_count, use_paths, scale_type, custom_labels,
|
|
label_size, font_key)
|
|
except ValueError as err:
|
|
return Response(str(err), status=400, mimetype='text/plain')
|
|
return Response(svg, mimetype='image/svg+xml')
|
|
|
|
|
|
if __name__ == '__main__':
|
|
app.run(debug=True)
|